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• rpm rollback ignoring rpms - no error output

  - by John H

  Issue rpm rollback is not working with a set of repackaged rpms created in the last couple days, but does work with more recent ones. [root@host1 repackage]# ls -l zsh-4.2.6-* -rw-r--r-- 1 root root 1788283 Apr 10 2011 zsh-4.2.6-3.el5.i386.rpm -rw-r--r-- 1 root root 1788691 Aug 18 04:38 zsh-4.2.6-5.el5.i386.rpm [root@host1 repackage]# rpm -q zsh zsh-4.2.6-6.el5 [root@host1 repackage]# rpm --test -Uvh --rollback 'Aug 18 01:00' [root@host1 repackage]# rpm -e zsh [root@host1 repackage]# [root@host1 repackage]# ls -l zsh* -rw-r--r-- 1 root root 1788283 Apr 10 2011 zsh-4.2.6-3.el5.i386.rpm -rw-r--r-- 1 root root 1788691 Aug 18 04:38 zsh-4.2.6-5.el5.i386.rpm -rw-r--r-- 1 root root 1789064 Aug 20 09:06 zsh-4.2.6-6.el5.i386.rpm [root@host1 repackage]# cp zsh-4.2.6-6.el5.i386.rpm /tmp [root@host1 repackage]# rpm --test -Uvh --rollback 'Aug 18 01:00' Rollback packages (+1/-0) to Mon Aug 20 09:02:16 2012 (0x50323558): Preparing... ########################################### [100%] Cleaning up repackaged packages: Removing /var/spool/repackage/zsh-4.2.6-6.el5.i386.rpm: [root@host1 repackage]# ls -l zsh-4.2.6-* -rw-r--r-- 1 root root 1788283 Apr 10 2011 zsh-4.2.6-3.el5.i386.rpm -rw-r--r-- 1 root root 1788691 Aug 18 04:38 zsh-4.2.6-5.el5.i386.rpm [root@host1 repackage]# cp /tmp/zsh-4.2.6-6.el5.i386.rpm . [root@host1 repackage]# rpm -Uvh --rollback 'Aug 18 01:00' Rollback packages (+1/-0) to Mon Aug 20 09:06:05 2012 (0x5032363d): Preparing... ########################################### [100%] 1:zsh ########################################### [ 50%] Cleaning up repackaged packages: Removing /var/spool/repackage/zsh-4.2.6-6.el5.i386.rpm: [root@host1 repackage]# rpm --test -Uvh --rollback 'April 9' [root@host1 repackage]# Now, if I run my test commands with -Uvvh I get debug messages to stderror which shows me that rpm reads each of the rpm files in /var/spool/repackage. The only interesting bit is the "expected size" but after searching, the expected size should be different, as it records the files as they are on the filesystem. D: opening db environment /var/lib/rpm/Packages joinenv D: opening db index /var/lib/rpm/Packages rdonly mode=0x0 D: locked db index /var/lib/rpm/Packages D: opening db index /var/lib/rpm/Installtid rdonly mode=0x0 D: opening db index /var/lib/rpm/Pubkeys rdonly mode=0x0 D: read h# 769 Header sanity check: OK D: ========== DSA pubkey id 53268101 37017186 (h#769) D: read h# 32 Header V3 DSA signature: OK, key ID 37017186 D: read h# 40 Header V3 DSA signature: OK, key ID 37017186 ... D: read h# 1753 Header V3 DSA signature: OK, key ID 37017186 D: Expected size: 3628918 = lead(96)+sigs(344)+pad(0)+data(3628478) D: Actual size: 3583695 D: /var/spool/repackage/Deployment_Guide-en-US-5.2-11.noarch.rpm: Header V3 DSA signature: OK, key ID 37017186 D: Expected size: 1100789 = lead(96)+sigs(344)+pad(0)+data(1100349) D: Actual size: 1109281 D: /var/spool/repackage/NetworkManager-0.7.0-10.el5_5.2.i386.rpm: Header V3 DSA signature: OK, key ID 37017186 D: Expected size: 1098167 = lead(96)+sigs(344)+pad(0)+data(1097727) D: Actual size: 1106179 D: /var/spool/repackage/NetworkManager-0.7.0-9.el5.i386.rpm: Header V3 DSA signature: OK, key ID 37017186 D: Expected size: 84351 = lead(96)+sigs(344)+pad(0)+data(83911) D: Actual size: 85378 ... D: Expected size: 1788276 = lead(96)+sigs(344)+pad(0)+data(1787836) D: Actual size: 1788691 D: /var/spool/repackage/zsh-4.2.6-5.el5.i386.rpm: Header V3 DSA signature: OK, key ID 37017186 D: --- erase h#1758 D: closed db index /var/lib/rpm/Pubkeys D: closed db index /var/lib/rpm/Installtid D: closed db index /var/lib/rpm/Packages D: closed db environment /var/lib/rpm/Packages D: May free Score board((nil)) I am able to copy these rpms out of the repackage directory and if I run them through cpio, extract the files. I also tried backing up and rebuilding the rpm database - no change. System Information: RHEL 5.8 rpm 4.4.2.3 /etc/yum.conf tsflags=repackage /etc/rpm/macros %_repackage_all_erasures 1

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• Setting up home DNS with Ubuntu Server

  - by Zeophlite

  I have a webserver (with static IP 192.168.1.5), and I want to have my machines on my local network to be able to access it without modifying /etc/hosts (or equivalent for Windows/OSX). My router has Primary DNS server 192.168.1.5 Secondary DNS server 8.8.8.8 (Google's public DNS). Nginx is set up to server websites externally as *.example.com Internally, I want *.example.local to point to the server. My webserver has BIND9 installed, but I'm unsure of the settings. I've been through various contradicting tutorials, and so most of my settings have been clobbered. I've stripped out the lines which I'm confused about. The tutorials I looked at are http://tech.surveypoint.com/blog/installing-a-local-dns-server-behind-a-hardware-router/ and http://ubuntuforums.org/showthread.php?t=236093 . They mostly differ on what should be put in /etc/bind/zones/db.example.local and /etc/bind/zones/db.192, so I've left the conflicting lines out below. Can someone suggest what the correct lines are to give my above behaviour (namely *.example.local pointing to 192.168.1.5)? /etc/network/interfaces auto lo iface lo inet loopback auto eth0 iface eth0 inet static address 192.168.1.5 netmask 255.255.255.0 broadcast 192.168.1.255 gateway 192.168.1.254 /etc/hostname avalon /etc/resolv.conf # Dynamic resolv.conf(5) file for glibc resolver(3) generated by resolvconf(8) # DO NOT EDIT THIS FILE BY HAND -- YOUR CHANGES WILL BE OVERWRITTEN /etc/bind/named.conf.options options { directory "/var/cache/bind"; forwarders { 8.8.8.8; 8.8.4.4; }; dnssec-validation auto; auth-nxdomain no; # conform to RFC1035 listen-on-v6 { any; }; }; /etc/bind/named.conf.local zone "example.local" { type master; file "/etc/bind/zones/db.example.local"; }; zone "1.168.192.in-addr.arpa" { type master; file "/etc/bind/zones/db.192"; }; /etc/bind/zones/db.example.local $TTL 604800 @ IN SOA avalon.example.local. webadmin.example.local. ( 5 ; Serial, increment each edit 604800 ; Refresh 86400 ; Retry 2419200 ; Expire 604800 ) ; Negative Cache TTL /etc/bind/zones/db.192 $TTL 604800 @ IN SOA avalon.example.local. webadmin.example.local. ( 4 ; Serial, increment each edit 604800 ; Refresh 86400 ; Retry 2419200 ; Expire 604800 ) ; Negative Cache TTL ; What do I need to add to the above files so that on a laptop on the internal network, I can type in webapp.example.local, and be served by my webserver? EDIT I made several changes to the above files on the webserver. /etc/network/interfaces (end of file) dns-nameservers 127.0.0.1 dns-search example.local /etc/bind/zones/db.example.local (end of file) @ IN NS avalon.example.local. @ IN A 192.168.1.5 avalon IN A 192.168.1.5 webapp IN A 192.168.1.5 www IN CNAME 192.168.1.5 /etc/bind/zones/db.192 (end of file) IN NS avalon.example.local. 73 IN PTR avalon.example.local. As a side note, my spare Win7 machine was able to connect directly to webapp.example.local, but for a Ubuntu 13.10 machine, I had to make the following changes as well (not on the webserver, but on a separate machine): /etc/nsswitch.conf before hosts: files mdns4_minimal [NOTFOUND=return] dns mdns4 after hosts: files dns /etc/NetworkManager/NetworkManager.conf before dns=dnsmasq after #dns=dnsmasq The issue remains that its not wildcard DNS, and so I have to add entries to /etc/bind/zones/db.example.local for webapp1, webapp2, ...

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• ASP.NET MVC validation problem

  - by ile

  ArticleRepostitory.cs: using System; using System.Collections.Generic; using System.Linq; using System.Web; using CMS.Model; using System.Web.Mvc; namespace CMS.Models { public class ArticleDisplay { public ArticleDisplay() { } public int CategoryID { set; get; } public string CategoryTitle { set; get; } public int ArticleID { set; get; } public string ArticleTitle { set; get; } public DateTime ArticleDate; public string ArticleContent { set; get; } } public class ArticleRepository { private DB db = new DB(); // // Query Methods public IQueryable<ArticleDisplay> FindAllArticles() { var result = from category in db.ArticleCategories join article in db.Articles on category.CategoryID equals article.CategoryID select new ArticleDisplay { CategoryID = category.CategoryID, CategoryTitle = category.Title, ArticleID = article.ArticleID, ArticleTitle = article.Title, ArticleDate = article.Date, ArticleContent = article.Content }; return result; } public IQueryable<ArticleDisplay> FindTodayArticles() { var result = from category in db.ArticleCategories join article in db.Articles on category.CategoryID equals article.CategoryID where article.Date == DateTime.Today select new ArticleDisplay { CategoryID = category.CategoryID, CategoryTitle = category.Title, ArticleID = article.ArticleID, ArticleTitle = article.Title, ArticleDate = article.Date, ArticleContent = article.Content }; return result; } public Article GetArticle(int id) { return db.Articles.SingleOrDefault(d => d.ArticleID == id); } public IQueryable<ArticleDisplay> DetailsArticle(int id) { var result = from category in db.ArticleCategories join article in db.Articles on category.CategoryID equals article.CategoryID where id == article.ArticleID select new ArticleDisplay { CategoryID = category.CategoryID, CategoryTitle = category.Title, ArticleID = article.ArticleID, ArticleTitle = article.Title, ArticleDate = article.Date, ArticleContent = article.Content }; return result; } // // Insert/Delete Methods public void Add(Article article) { db.Articles.InsertOnSubmit(article); } public void Delete(Article article) { db.Articles.DeleteOnSubmit(article); } // // Persistence public void Save() { db.SubmitChanges(); } } } ArticleController.cs: using System; using System.Collections.Generic; using System.Linq; using System.Web; using System.Web.Mvc; using System.Web.Mvc.Ajax; using CMS.Models; using CMS.Model; namespace CMS.Controllers { public class ArticleController : Controller { ArticleRepository articleRepository = new ArticleRepository(); ArticleCategoryRepository articleCategoryRepository = new ArticleCategoryRepository(); // // GET: /Article/ public ActionResult Index() { var allArticles = articleRepository.FindAllArticles().ToList(); return View(allArticles); } // // GET: /Article/Details/5 public ActionResult Details(int id) { var article = articleRepository.DetailsArticle(id).Single(); if (article == null) return View("NotFound"); return View(article); } // // GET: /Article/Create public ActionResult Create() { ViewData["categories"] = new SelectList ( articleCategoryRepository.FindAllCategories().ToList(), "CategoryId", "Title" ); Article article = new Article() { Date = DateTime.Now, CategoryID = 1 }; return View(article); } // // POST: /Article/Create [AcceptVerbs(HttpVerbs.Post)] public ActionResult Create(Article article) { if (ModelState.IsValid) { try { // TODO: Add insert logic here articleRepository.Add(article); articleRepository.Save(); return RedirectToAction("Index"); } catch { return View(article); } } else { return View(article); } } // // GET: /Article/Edit/5 public ActionResult Edit(int id) { ViewData["categories"] = new SelectList ( articleCategoryRepository.FindAllCategories().ToList(), "CategoryId", "Title" ); var article = articleRepository.GetArticle(id); return View(article); } // // POST: /Article/Edit/5 [AcceptVerbs(HttpVerbs.Post)] public ActionResult Edit(int id, FormCollection collection) { Article article = articleRepository.GetArticle(id); try { // TODO: Add update logic here UpdateModel(article, collection.ToValueProvider()); articleRepository.Save(); return RedirectToAction("Details", new { id = article.ArticleID }); } catch { return View(article); } } // // HTTP GET: /Article/Delete/1 public ActionResult Delete(int id) { Article article = articleRepository.GetArticle(id); if (article == null) return View("NotFound"); else return View(article); } // // HTTP POST: /Article/Delete/1 [AcceptVerbs(HttpVerbs.Post)] public ActionResult Delete(int id, string confirmButton) { Article article = articleRepository.GetArticle(id); if (article == null) return View("NotFound"); articleRepository.Delete(article); articleRepository.Save(); return View("Deleted"); } } } View/Article/Create.aspx: <%@ Page Title="" Language="C#" MasterPageFile="~/Views/Shared/Site.Master" Inherits="System.Web.Mvc.ViewPage<CMS.Model.Article>" %> <asp:Content ID="Content1" ContentPlaceHolderID="TitleContent" runat="server"> Create </asp:Content> <asp:Content ID="Content2" ContentPlaceHolderID="MainContent" runat="server"> <h2>Create</h2> <%= Html.ValidationSummary("Create was unsuccessful. Please correct the errors and try again.") %> <% using (Html.BeginForm()) {%> <fieldset> <legend>Fields</legend> <p> <label for="Title">Title:</label> <%= Html.TextBox("Title") %> <%= Html.ValidationMessage("Title", "*") %> </p> <p> <label for="Content">Content:</label> <%= Html.TextArea("Content", new { id = "Content" })%> <%= Html.ValidationMessage("Content", "*")%> </p> <p> <label for="Date">Date:</label> <%= Html.TextBox("Date") %> <%= Html.ValidationMessage("Date", "*") %> </p> <p> <label for="CategoryID">Category:</label> <%= Html.DropDownList("CategoryId", (IEnumerable<SelectListItem>)ViewData["categories"])%> </p> <p> <input type="submit" value="Create" /> </p> </fieldset> <% } %> <div> <%=Html.ActionLink("Back to List", "Index") %> </div> </asp:Content> If I remove DropDownList from .aspx file then validation (on date only because no other validation exists) works, but of course I can't create new article because one value is missing. If I leave dropdownlist and try to insert wrong date I get following error: System.InvalidOperationException: The ViewData item with the key 'CategoryId' is of type 'System.Int32' but needs to be of type 'IEnumerable'. If I enter correct date than the article is properly inserted. There's one other thing that's confusing me... For example, if I try manually add the categoyID: [AcceptVerbs(HttpVerbs.Post)] public ActionResult Create(Article article) { if (ModelState.IsValid) { try { // TODO: Add insert logic here // Manually add category value article.CategoryID = 1; articleRepository.Add(article); articleRepository.Save(); return RedirectToAction("Index"); } catch { return View(article); } } else { return View(article); } } ..I also get the above error. There's one other thing I noticed. If I add partial class Article, when returning to articleRepository.cs I get error that 'Article' is an ambiguous reference between 'CMS.Models.Article' and 'CMS.Model.Article' Any thoughts on this one?

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• ODBC in SSIS 2012

  - by jamiet

  In August 2011 the SQL Server client team published a blog post entitled Microsoft is Aligning with ODBC for Native Relational Data Access in which they basically said "OLE DB is the past, ODBC is the future. Deal with it.". From that blog post:We encourage you to adopt ODBC in the development of your new and future versions of your application. You don’t need to change your existing applications using OLE DB, as they will continue to be supported on Denali throughout its lifecycle. While this gives you a large window of opportunity for changing your applications before the deprecation goes into effect, you may want to consider migrating those applications to ODBC as a part of your future roadmap.I recently undertook a project using SSIS2012 and heeded that advice by opting to use ODBC Connection Managers rather than OLE DB Connection Managers. Unfortunately my finding was that the ODBC Connection Manager is not yet ready for primetime use in SSIS 2012. The main issue I found was that you can't populate an Object variable with a recordset when using an Execute SQL Task connecting to an ODBC data source; any attempt to do so will result in an error:"Disconnected recordsets are not available from ODBC connections." I have filed a bug on Connect at ODBC Connection Manager does not have same funcitonality as OLE DB. For this reason I strongly recommend that you don't make the move to ODBC Connection Managers in SSIS just yet - best to wait for the next version of SSIS before doing that.I found another couple of issues with the ODBC Connection Manager that are worth keeping in mind:It doesn't recognise System Data Source Names (DSNs), only User DSNs (bug filed at ODBC System DSNs are not available in the ODBC Connection Manager)  UPDATE: According to a comment on that Connect item this may only be a problem on 64bit.In the OLE DB Connection Manager parameter ordinals are 0-based, in the ODBC Connection Manager they are 1-based (oh I just can't wait for the upgrade mess that ensues from this one!!!)You have been warned!@jamiet

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• SQL SERVER – Microsoft SQL Server Migration Assistant V6.0 Released

  - by Pinal Dave

  Every company makes a different decision about the database when they start, but as they move forward they mature and make the decision which is based on their experience and best interest of the organization. Similarly, quite a many organizations make different decisions on database, like Sybase, MySQL, Oracle or Access and as time passes by they learn that now they want to move to a different platform. Microsoft makes it easy for SQL Server professional by releasing various Migration Assistant tools. Last week, Microsoft released Microsoft SQL Server Migration Assistant v6.0. Here are different tools released earlier last week to migrate various product to SQL Server. Microsoft SQL Server Migration Assistant v6.0 for Sybase SQL Server Migration Assistant (SSMA) is a free supported tool from Microsoft that simplifies database migration process from Sybase Adaptive Server Enterprise (ASE) to SQL Server and Azure SQL DB. SSMA automates all aspects of migration including migration assessment analysis, schema and SQL statement conversion, data migration as well as migration testing. Microsoft SQL Server Migration Assistant v6.0 for MySQL SQL Server Migration Assistant (SSMA) is a free supported tool from Microsoft that simplifies database migration process from MySQL to SQL Server and Azure SQL DB. SSMA automates all aspects of migration including migration assessment analysis, schema and SQL statement conversion, data migration as well as migration testing. Microsoft SQL Server Migration Assistant v6.0 for Oracle SQL Server Migration Assistant (SSMA) is a free supported tool from Microsoft that simplifies database migration process from Oracle to SQL Server and Azure SQL DB. SSMA automates all aspects of migration including migration assessment analysis, schema and SQL statement conversion, data migration as well as migration testing. Microsoft SQL Server Migration Assistant v6.0 for Access SQL Server Migration Assistant (SSMA) is a free supported tool from Microsoft that simplifies database migration process from Access to SQL Server. SSMA for Access automates conversion of Microsoft Access database objects to SQL Server database objects, loads the objects into SQL Server and Azure SQL DB, and then migrates data from Microsoft Access to SQL Server and Azure SQL DB. Reference: Pinal Dave (http://blog.sqlauthority.com)Filed under: PostADay, SQL, SQL Authority, SQL Download, SQL Query, SQL Server, SQL Tips and Tricks, T SQL Tagged: SQL Migration

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• The entity type String is not part of the model for the current context error [migrated]

  - by Michael V

  I am getting the following error in my controller after the view submits the collection: The entity type String is not part of the model for the current context. Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code. Exception Details: System.InvalidOperationException: The entity type String is not part of the model for the current context. Source Error: Line 51: foreach (var survey in mysurveys) Line 52: { Line 53: db.Entry(survey).State = EntityState.Modified; Line 54: Line 55: // db.Entry(survey).State = EntityState.Modified; Here is the code ` [HttpPost] public ActionResult UpdateTest(FormCollection mysurveys) { System.Diagnostics.Debug.WriteLine("iam in test post" + mysurveys.Count); foreach (var survey in mysurveys) { db.Entry(survey).State = EntityState.Modified; } db.SaveChanges(); return View(mysurveys); } `Similar code with one record only (no foreach) works fine

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• Arduino IDE not connecting to microcontroller

  - by JDD

  I get this error when trying to connect to an Arduino through a USB serial connection. I'm using the Arduino IDE 1.0.1 and the 64bit version of Ubuntu 12.04. This has been a reoccurring problem since 10.04 and happens to a few other programs that use a serial connection too. I have no problem getting serial data from the Arduino using Python or Screen. The Arduino IDE seems to work just fine otherwise. processing.app.SerialException: Error opening serial port '/dev/ttyACM0'. at processing.app.Serial.<init>(Serial.java:178) at processing.app.Serial.<init>(Serial.java:92) at processing.app.SerialMonitor.openSerialPort(SerialMonitor.java:207) at processing.app.Editor.handleSerial(Editor.java:2447) at processing.app.EditorToolbar.mousePressed(EditorToolbar.java:353) at java.awt.Component.processMouseEvent(Component.java:6386) at javax.swing.JComponent.processMouseEvent(JComponent.java:3268) at java.awt.Component.processEvent(Component.java:6154) at java.awt.Container.processEvent(Container.java:2045) at java.awt.Component.dispatchEventImpl(Component.java:4750) at java.awt.Container.dispatchEventImpl(Container.java:2103) at java.awt.Component.dispatchEvent(Component.java:4576) at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4633) at java.awt.LightweightDispatcher.processMouseEvent(Container.java:4294) at java.awt.LightweightDispatcher.dispatchEvent(Container.java:4227) at java.awt.Container.dispatchEventImpl(Container.java:2089) at java.awt.Window.dispatchEventImpl(Window.java:2518) at java.awt.Component.dispatchEvent(Component.java:4576) at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:672) at java.awt.EventQueue.access$400(EventQueue.java:96) at java.awt.EventQueue$2.run(EventQueue.java:631) at java.awt.EventQueue$2.run(EventQueue.java:629) at java.security.AccessController.doPrivileged(Native Method) at java.security.AccessControlContext$1.doIntersectionPrivilege(AccessControlContext.java:105) at java.security.AccessControlContext$1.doIntersectionPrivilege(AccessControlContext.java:116) at java.awt.EventQueue$3.run(EventQueue.java:645) at java.awt.EventQueue$3.run(EventQueue.java:643) at java.security.AccessController.doPrivileged(Native Method) at java.security.AccessControlContext$1.doIntersectionPrivilege(AccessControlContext.java:105) at java.awt.EventQueue.dispatchEvent(EventQueue.java:642) at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:275) at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:200) at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:190) at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:185) at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:177) at java.awt.EventDispatchThread.run(EventDispatchThread.java:138) Caused by: gnu.io.UnsupportedCommOperationException: Invalid Parameter at gnu.io.RXTXPort.setSerialPortParams(RXTXPort.java:171) at processing.app.Serial.<init>(Serial.java:163) ... 35 more

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• How do I reduce the size of mlocate database?

  - by MountainX

  I'm out of space on /var 25G 25G 0 100% /var It looks like mlocate.db is the problem: # find . -printf '%s %p\n' | sort -nr | head 13140140032 ./lib/mlocate/mlocate.db.cgLMAM 12409839616 ./lib/mlocate/mlocate.db.MqGeqe cat /etc/updatedb.conf PRUNE_BIND_MOUNTS="yes" PRUNENAMES=".git .bzr .hg .svn" PRUNEPATHS="/tmp /var/spool /media" PRUNEFS="NFS nfs nfs4 rpc_pipefs afs binfmt_misc proc smbfs autofs iso9660 ncpfs coda devpts ftpfs devfs mfs shfs sysfs cifs lustre_lite tmpfs usbfs udf" I don't see anything else to prune. So how can I fix this? Thanks

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• Force.com presents Database.com SQL Azure/Amazon RDS unfazed

  - by Sarang

  At the DreamForce 2010 event in San Francisco Force.com unveiled their next big thing in the Fat SaaS portfolio "Database.com".  I am still wondering how would they would've shelled out for that domain name. Now why would a already established SaaS player foray into a key building block like Database? Potentially allowing enterprises to build apps that do not utilize the Force.com stack! One key reason is being seen as the Fat SaaS player with evey trick in the SaaS space under his belt. You want CRM come hither, want a custom development PaaS like solution welcome home (VMForce), want all your apps to talk to a cloud DB and minimize latency by having it reside closer to you cloud apps? You've come to the right place sire! Other is potentially killing foray of smaller DB players like Oracle (Not surprisingly, the Database.com offering is a highly customized and scalable Oracle database) from entering the lucrative SaaS db marketplace. The feature set promised looks great out of the box for someone who likes to visualize cool new architectures. The ground realities are certainly going to be a lot different considering the SOAP/REST style access patterns in lieu of the comfortable old shoe of SQL. Microsoft suffered heavily with SDS (SQL Data Services) offering in early 2009 and had to pull the plug on the product only to reintroduce as a simple SQL Server in the cloud, SQL Windows Azure. Though MSFT is playing cool by providing OData semantics to work with SQL Windows Azure satisfying atleast some needs of the Web-Style to a DB. The other features like Social data models including Profiles, Status updates, feeds seem interesting as well. (Although I beleive social is just one of the aspects of large scale collaborative computing). All these features start "Free" for devs its a good news but the good news stops here. The overall pricing model of $ per Users per Transactions / Month is highly disproportionate compared to Amazon RDS (Based on MySQL) or SQL Windows Azure (Based on MSSQL). Roger Jennigs of Oakleaf did an interesting comparo based on 3, 10, 100, 500 users and it turns out that Database.com going by current understanding is way too expensive for the services on offer. The offering may not impact the decision for DotNet shops mulling their cloud stategy or even some Java/MySQL shops thinking about Amazon RDS, however for enterprises having already invested in other force.com offerings this could be a very important piece in the cloud strategy jigsaw. One which would address a key cloud DB issue of "Latency" for them at least it will help having the DB in the neighborhood. The tooling and "SQL like" access provider drivers (Think ODBC/JDBC) will be available later this year. Progress Software has already announced their JDBC driver stack for Database.com. It remains to be seen how effective the overall solutions proves to be in the longer run but for starts its a important decision towards consolidating Force.com's already strong positioning in the SaaS space. As always contrasting views are welcome! :)

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• How to I fix software center after installing the Linux Mint MATE desktop?

  - by tinuz

  I installed the MATE desktop using this manual but now i can't open my Ubuntu Software Center and can't open the settings from the update manager. I removed mate desktop but it doesn't fix the problem, i also reinstalled the software center, software-properties-gtk and software-properties-common using: sudo apt-get update; sudo apt-get --purge --reinstall install software-center software-properties-common software-properties-gtk. But when using this line i get the following error: Reading package lists... Done Reading package lists... Done Building dependency tree Reading state information... Done 0 upgraded, 0 newly installed, 3 reinstalled, 0 to remove and 0 not upgraded. Need to get 0 B/735 kB of archives. After this operation, 0 B of additional disk space will be used. (Reading database ... 304824 files and directories currently installed.) Preparing to replace software-center 5.0.2 (using .../software-center_5.0.2_all.deb) ... Unpacking replacement software-center ... Preparing to replace software-properties-common 0.81.13.1 (using .../software-properties-common_0.81.13.1_all.deb) ... Unpacking replacement software-properties-common ... Preparing to replace software-properties-gtk 0.81.13.1 (using .../software-properties-gtk_0.81.13.1_all.deb) ... Unpacking replacement software-properties-gtk ... Processing triggers for desktop-file-utils ... Processing triggers for gnome-menus ... Processing triggers for bamfdaemon ... Rebuilding /usr/share/applications/bamf.index... Processing triggers for hicolor-icon-theme ... Processing triggers for man-db ... Processing triggers for shared-mime-info ... Unknown media type in type 'all/all' Unknown media type in type 'all/allfiles' Unknown media type in type 'uri/mms' Unknown media type in type 'uri/mmst' Unknown media type in type 'uri/mmsu' Unknown media type in type 'uri/pnm' Unknown media type in type 'uri/rtspt' Unknown media type in type 'uri/rtspu' Unknown media type in type 'interface/x-winamp-skin' Setting up software-center (5.0.2) ... Traceback (most recent call last): File "/usr/sbin/update-software-center", line 38, in <module> from softwarecenter.db.update import rebuild_database File "/usr/share/software-center/softwarecenter/db/update.py", line 59, in <module> from softwarecenter.db.database import parse_axi_values_file File "/usr/share/software-center/softwarecenter/db/database.py", line 26, in <module> from softwarecenter.db.application import Application File "/usr/share/software-center/softwarecenter/db/application.py", line 25, in <module> from softwarecenter.backend.channel import is_channel_available File "/usr/share/software-center/softwarecenter/backend/channel.py", line 25, in <module> from softwarecenter.distro import get_distro File "/usr/share/software-center/softwarecenter/distro/__init__.py", line 165, in <module> distro_instance=_get_distro() File "/usr/share/software-center/softwarecenter/distro/__init__.py", line 148, in _get_distro module = __import__(distro_id, globals(), locals(), [], -1) ImportError: No module named LinuxMint Setting up software-properties-common (0.81.13.1) ... Setting up software-properties-gtk (0.81.13.1) ... $ Is there a way to fix this problem without having to reinstall Ubuntu 11.10?? thanks in advance tinuz

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• TOTD #166: Using NoSQL database in your Java EE 6 Applications on GlassFish - MongoDB for now!

  - by arungupta

  The Java EE 6 platform includes Java Persistence API to work with RDBMS. The JPA specification defines a comprehensive API that includes, but not restricted to, how a database table can be mapped to a POJO and vice versa, provides mechanisms how a PersistenceContext can be injected in a @Stateless bean and then be used for performing different operations on the database table and write typesafe queries. There are several well known advantages of RDBMS but the NoSQL movement has gained traction over past couple of years. The NoSQL databases are not intended to be a replacement for the mainstream RDBMS. As Philosophy of NoSQL explains, NoSQL database was designed for casual use where all the features typically provided by an RDBMS are not required. The name "NoSQL" is more of a category of databases that is more known for what it is not rather than what it is. The basic principles of NoSQL database are: No need to have a pre-defined schema and that makes them a schema-less database. Addition of new properties to existing objects is easy and does not require ALTER TABLE. The unstructured data gives flexibility to change the format of data any time without downtime or reduced service levels. Also there are no joins happening on the server because there is no structure and thus no relation between them. Scalability and performance is more important than the entire set of functionality typically provided by an RDBMS. This set of databases provide eventual consistency and/or transactions restricted to single items but more focus on CRUD. Not be restricted to SQL to access the information stored in the backing database. Designed to scale-out (horizontal) instead of scale-up (vertical). This is important knowing that databases, and everything else as well, is moving into the cloud. RBDMS can scale-out using sharding but requires complex management and not for the faint of heart. Unlike RBDMS which require a separate caching tier, most of the NoSQL databases comes with integrated caching. Designed for less management and simpler data models lead to lower administration as well. There are primarily three types of NoSQL databases: Key-Value stores (e.g. Cassandra and Riak) Document databases (MongoDB or CouchDB) Graph databases (Neo4J) You may think NoSQL is panacea but as I mentioned above they are not meant to replace the mainstream databases and here is why: RDBMS have been around for many years, very stable, and functionally rich. This is something CIOs and CTOs can bet their money on without much worry. There is a reason 98% of Fortune 100 companies run Oracle :-) NoSQL is cutting edge, brings excitement to developers, but enterprises are cautious about them. Commercial databases like Oracle are well supported by the backing enterprises in terms of providing support resources on a global scale. There is a full ecosystem built around these commercial databases providing training, performance tuning, architecture guidance, and everything else. NoSQL is fairly new and typically backed by a single company not able to meet the scale of these big enterprises. NoSQL databases are good for CRUDing operations but business intelligence is extremely important for enterprises to stay competitive. RDBMS provide extensive tooling to generate this data but that was not the original intention of NoSQL databases and is lacking in that area. Generating any meaningful information other than CRUDing require extensive programming. Not suited for complex transactions such as banking systems or other highly transactional applications requiring 2-phase commit. SQL cannot be used with NoSQL databases and writing simple queries can be involving. Enough talking, lets take a look at some code. This blog has published multiple blogs on how to access a RDBMS using JPA in a Java EE 6 application. This Tip Of The Day (TOTD) will show you can use MongoDB (a document-oriented database) with a typical 3-tier Java EE 6 application. Lets get started! The complete source code of this project can be downloaded here. Download MongoDB for your platform from here (1.8.2 as of this writing) and start the server as: arun@ArunUbuntu:~/tools/mongodb-linux-x86_64-1.8.2/bin$./mongod./mongod --help for help and startup optionsSun Jun 26 20:41:11 [initandlisten] MongoDB starting : pid=11210port=27017 dbpath=/data/db/ 64-bit Sun Jun 26 20:41:11 [initandlisten] db version v1.8.2, pdfile version4.5Sun Jun 26 20:41:11 [initandlisten] git version:433bbaa14aaba6860da15bd4de8edf600f56501bSun Jun 26 20:41:11 [initandlisten] build sys info: Linuxbs-linux64.10gen.cc 2.6.21.7-2.ec2.v1.2.fc8xen #1 SMP Fri Nov 2017:48:28 EST 2009 x86_64 BOOST_LIB_VERSION=1_41Sun Jun 26 20:41:11 [initandlisten] waiting for connections on port 27017Sun Jun 26 20:41:11 [websvr] web admin interface listening on port 28017 The default directory for the database is /data/db and needs to be created as: sudo mkdir -p /data/db/sudo chown `id -u` /data/db You can specify a different directory using "--dbpath" option. Refer to Quickstart for your specific platform. Using NetBeans, create a Java EE 6 project and make sure to enable CDI and add JavaServer Faces framework. Download MongoDB Java Driver (2.6.3 of this writing) and add it to the project library by selecting "Properties", "LIbraries", "Add Library...", creating a new library by specifying the location of the JAR file, and adding the library to the created project. Edit the generated "index.xhtml" such that it looks like: <h1>Add a new movie</h1><h:form> Name: <h:inputText value="#{movie.name}" size="20"/><br/> Year: <h:inputText value="#{movie.year}" size="6"/><br/> Language: <h:inputText value="#{movie.language}" size="20"/><br/> <h:commandButton actionListener="#{movieSessionBean.createMovie}" action="show" title="Add" value="submit"/></h:form> This page has a simple HTML form with three text boxes and a submit button. The text boxes take name, year, and language of a movie and the submit button invokes the "createMovie" method of "movieSessionBean" and then render "show.xhtml". Create "show.xhtml" ("New" -> "Other..." -> "Other" -> "XHTML File") such that it looks like: <head> <title><h1>List of movies</h1></title> </head> <body> <h:form> <h:dataTable value="#{movieSessionBean.movies}" var="m" > <h:column><f:facet name="header">Name</f:facet>#{m.name}</h:column> <h:column><f:facet name="header">Year</f:facet>#{m.year}</h:column> <h:column><f:facet name="header">Language</f:facet>#{m.language}</h:column> </h:dataTable> </h:form> This page shows the name, year, and language of all movies stored in the database so far. The list of movies is returned by "movieSessionBean.movies" property. Now create the "Movie" class such that it looks like: import com.mongodb.BasicDBObject;import com.mongodb.BasicDBObject;import com.mongodb.DBObject;import javax.enterprise.inject.Model;import javax.validation.constraints.Size;/** * @author arun */@Modelpublic class Movie { @Size(min=1, max=20) private String name; @Size(min=1, max=20) private String language; private int year; // getters and setters for "name", "year", "language" public BasicDBObject toDBObject() { BasicDBObject doc = new BasicDBObject(); doc.put("name", name); doc.put("year", year); doc.put("language", language); return doc; } public static Movie fromDBObject(DBObject doc) { Movie m = new Movie(); m.name = (String)doc.get("name"); m.year = (int)doc.get("year"); m.language = (String)doc.get("language"); return m; } @Override public String toString() { return name + ", " + year + ", " + language; }} Other than the usual boilerplate code, the key methods here are "toDBObject" and "fromDBObject". These methods provide a conversion from "Movie" -> "DBObject" and vice versa. The "DBObject" is a MongoDB class that comes as part of the mongo-2.6.3.jar file and which we added to our project earlier.  The complete javadoc for 2.6.3 can be seen here. Notice, this class also uses Bean Validation constraints and will be honored by the JSF layer. Finally, create "MovieSessionBean" stateless EJB with all the business logic such that it looks like: package org.glassfish.samples;import com.mongodb.BasicDBObject;import com.mongodb.DB;import com.mongodb.DBCollection;import com.mongodb.DBCursor;import com.mongodb.DBObject;import com.mongodb.Mongo;import java.net.UnknownHostException;import java.util.ArrayList;import java.util.List;import javax.annotation.PostConstruct;import javax.ejb.Stateless;import javax.inject.Inject;import javax.inject.Named;/** * @author arun */@Stateless@Namedpublic class MovieSessionBean { @Inject Movie movie; DBCollection movieColl; @PostConstruct private void initDB() throws UnknownHostException { Mongo m = new Mongo(); DB db = m.getDB("movieDB"); movieColl = db.getCollection("movies"); if (movieColl == null) { movieColl = db.createCollection("movies", null); } } public void createMovie() { BasicDBObject doc = movie.toDBObject(); movieColl.insert(doc); } public List<Movie> getMovies() { List<Movie> movies = new ArrayList(); DBCursor cur = movieColl.find(); System.out.println("getMovies: Found " + cur.size() + " movie(s)"); for (DBObject dbo : cur.toArray()) { movies.add(Movie.fromDBObject(dbo)); } return movies; }} The database is initialized in @PostConstruct. Instead of a working with a database table, NoSQL databases work with a schema-less document. The "Movie" class is the document in our case and stored in the collection "movies". The collection allows us to perform query functions on all movies. The "getMovies" method invokes "find" method on the collection which is equivalent to the SQL query "select * from movies" and then returns a List<Movie>. Also notice that there is no "persistence.xml" in the project. Right-click and run the project to see the output as: Enter some values in the text box and click on enter to see the result as: If you reached here then you've successfully used MongoDB in your Java EE 6 application, congratulations! Some food for thought and further play ... SQL to MongoDB mapping shows mapping between traditional SQL -> Mongo query language. Tutorial shows fun things you can do with MongoDB. Try the interactive online shell  The cookbook provides common ways of using MongoDB In terms of this project, here are some tasks that can be tried: Encapsulate database management in a JPA persistence provider. Is it even worth it because the capabilities are going to be very different ? MongoDB uses "BSonObject" class for JSON representation, add @XmlRootElement on a POJO and how a compatible JSON representation can be generated. This will make the fromXXX and toXXX methods redundant.

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• TOTD #166: Using NoSQL database in your Java EE 6 Applications on GlassFish - MongoDB for now!

  - by arungupta

  The Java EE 6 platform includes Java Persistence API to work with RDBMS. The JPA specification defines a comprehensive API that includes, but not restricted to, how a database table can be mapped to a POJO and vice versa, provides mechanisms how a PersistenceContext can be injected in a @Stateless bean and then be used for performing different operations on the database table and write typesafe queries. There are several well known advantages of RDBMS but the NoSQL movement has gained traction over past couple of years. The NoSQL databases are not intended to be a replacement for the mainstream RDBMS. As Philosophy of NoSQL explains, NoSQL database was designed for casual use where all the features typically provided by an RDBMS are not required. The name "NoSQL" is more of a category of databases that is more known for what it is not rather than what it is. The basic principles of NoSQL database are: No need to have a pre-defined schema and that makes them a schema-less database. Addition of new properties to existing objects is easy and does not require ALTER TABLE. The unstructured data gives flexibility to change the format of data any time without downtime or reduced service levels. Also there are no joins happening on the server because there is no structure and thus no relation between them. Scalability and performance is more important than the entire set of functionality typically provided by an RDBMS. This set of databases provide eventual consistency and/or transactions restricted to single items but more focus on CRUD. Not be restricted to SQL to access the information stored in the backing database. Designed to scale-out (horizontal) instead of scale-up (vertical). This is important knowing that databases, and everything else as well, is moving into the cloud. RBDMS can scale-out using sharding but requires complex management and not for the faint of heart. Unlike RBDMS which require a separate caching tier, most of the NoSQL databases comes with integrated caching. Designed for less management and simpler data models lead to lower administration as well. There are primarily three types of NoSQL databases: Key-Value stores (e.g. Cassandra and Riak) Document databases (MongoDB or CouchDB) Graph databases (Neo4J) You may think NoSQL is panacea but as I mentioned above they are not meant to replace the mainstream databases and here is why: RDBMS have been around for many years, very stable, and functionally rich. This is something CIOs and CTOs can bet their money on without much worry. There is a reason 98% of Fortune 100 companies run Oracle :-) NoSQL is cutting edge, brings excitement to developers, but enterprises are cautious about them. Commercial databases like Oracle are well supported by the backing enterprises in terms of providing support resources on a global scale. There is a full ecosystem built around these commercial databases providing training, performance tuning, architecture guidance, and everything else. NoSQL is fairly new and typically backed by a single company not able to meet the scale of these big enterprises. NoSQL databases are good for CRUDing operations but business intelligence is extremely important for enterprises to stay competitive. RDBMS provide extensive tooling to generate this data but that was not the original intention of NoSQL databases and is lacking in that area. Generating any meaningful information other than CRUDing require extensive programming. Not suited for complex transactions such as banking systems or other highly transactional applications requiring 2-phase commit. SQL cannot be used with NoSQL databases and writing simple queries can be involving. Enough talking, lets take a look at some code. This blog has published multiple blogs on how to access a RDBMS using JPA in a Java EE 6 application. This Tip Of The Day (TOTD) will show you can use MongoDB (a document-oriented database) with a typical 3-tier Java EE 6 application. Lets get started! The complete source code of this project can be downloaded here. Download MongoDB for your platform from here (1.8.2 as of this writing) and start the server as: arun@ArunUbuntu:~/tools/mongodb-linux-x86_64-1.8.2/bin$./mongod./mongod --help for help and startup optionsSun Jun 26 20:41:11 [initandlisten] MongoDB starting : pid=11210port=27017 dbpath=/data/db/ 64-bit Sun Jun 26 20:41:11 [initandlisten] db version v1.8.2, pdfile version4.5Sun Jun 26 20:41:11 [initandlisten] git version:433bbaa14aaba6860da15bd4de8edf600f56501bSun Jun 26 20:41:11 [initandlisten] build sys info: Linuxbs-linux64.10gen.cc 2.6.21.7-2.ec2.v1.2.fc8xen #1 SMP Fri Nov 2017:48:28 EST 2009 x86_64 BOOST_LIB_VERSION=1_41Sun Jun 26 20:41:11 [initandlisten] waiting for connections on port 27017Sun Jun 26 20:41:11 [websvr] web admin interface listening on port 28017 The default directory for the database is /data/db and needs to be created as: sudo mkdir -p /data/db/sudo chown `id -u` /data/db You can specify a different directory using "--dbpath" option. Refer to Quickstart for your specific platform. Using NetBeans, create a Java EE 6 project and make sure to enable CDI and add JavaServer Faces framework. Download MongoDB Java Driver (2.6.3 of this writing) and add it to the project library by selecting "Properties", "LIbraries", "Add Library...", creating a new library by specifying the location of the JAR file, and adding the library to the created project. Edit the generated "index.xhtml" such that it looks like: <h1>Add a new movie</h1><h:form> Name: <h:inputText value="#{movie.name}" size="20"/><br/> Year: <h:inputText value="#{movie.year}" size="6"/><br/> Language: <h:inputText value="#{movie.language}" size="20"/><br/> <h:commandButton actionListener="#{movieSessionBean.createMovie}" action="show" title="Add" value="submit"/></h:form> This page has a simple HTML form with three text boxes and a submit button. The text boxes take name, year, and language of a movie and the submit button invokes the "createMovie" method of "movieSessionBean" and then render "show.xhtml". Create "show.xhtml" ("New" -> "Other..." -> "Other" -> "XHTML File") such that it looks like: <head> <title><h1>List of movies</h1></title> </head> <body> <h:form> <h:dataTable value="#{movieSessionBean.movies}" var="m" > <h:column><f:facet name="header">Name</f:facet>#{m.name}</h:column> <h:column><f:facet name="header">Year</f:facet>#{m.year}</h:column> <h:column><f:facet name="header">Language</f:facet>#{m.language}</h:column> </h:dataTable> </h:form> This page shows the name, year, and language of all movies stored in the database so far. The list of movies is returned by "movieSessionBean.movies" property. Now create the "Movie" class such that it looks like: import com.mongodb.BasicDBObject;import com.mongodb.BasicDBObject;import com.mongodb.DBObject;import javax.enterprise.inject.Model;import javax.validation.constraints.Size;/** * @author arun */@Modelpublic class Movie { @Size(min=1, max=20) private String name; @Size(min=1, max=20) private String language; private int year; // getters and setters for "name", "year", "language" public BasicDBObject toDBObject() { BasicDBObject doc = new BasicDBObject(); doc.put("name", name); doc.put("year", year); doc.put("language", language); return doc; } public static Movie fromDBObject(DBObject doc) { Movie m = new Movie(); m.name = (String)doc.get("name"); m.year = (int)doc.get("year"); m.language = (String)doc.get("language"); return m; } @Override public String toString() { return name + ", " + year + ", " + language; }} Other than the usual boilerplate code, the key methods here are "toDBObject" and "fromDBObject". These methods provide a conversion from "Movie" -> "DBObject" and vice versa. The "DBObject" is a MongoDB class that comes as part of the mongo-2.6.3.jar file and which we added to our project earlier.  The complete javadoc for 2.6.3 can be seen here. Notice, this class also uses Bean Validation constraints and will be honored by the JSF layer. Finally, create "MovieSessionBean" stateless EJB with all the business logic such that it looks like: package org.glassfish.samples;import com.mongodb.BasicDBObject;import com.mongodb.DB;import com.mongodb.DBCollection;import com.mongodb.DBCursor;import com.mongodb.DBObject;import com.mongodb.Mongo;import java.net.UnknownHostException;import java.util.ArrayList;import java.util.List;import javax.annotation.PostConstruct;import javax.ejb.Stateless;import javax.inject.Inject;import javax.inject.Named;/** * @author arun */@Stateless@Namedpublic class MovieSessionBean { @Inject Movie movie; DBCollection movieColl; @PostConstruct private void initDB() throws UnknownHostException { Mongo m = new Mongo(); DB db = m.getDB("movieDB"); movieColl = db.getCollection("movies"); if (movieColl == null) { movieColl = db.createCollection("movies", null); } } public void createMovie() { BasicDBObject doc = movie.toDBObject(); movieColl.insert(doc); } public List<Movie> getMovies() { List<Movie> movies = new ArrayList(); DBCursor cur = movieColl.find(); System.out.println("getMovies: Found " + cur.size() + " movie(s)"); for (DBObject dbo : cur.toArray()) { movies.add(Movie.fromDBObject(dbo)); } return movies; }} The database is initialized in @PostConstruct. Instead of a working with a database table, NoSQL databases work with a schema-less document. The "Movie" class is the document in our case and stored in the collection "movies". The collection allows us to perform query functions on all movies. The "getMovies" method invokes "find" method on the collection which is equivalent to the SQL query "select * from movies" and then returns a List<Movie>. Also notice that there is no "persistence.xml" in the project. Right-click and run the project to see the output as: Enter some values in the text box and click on enter to see the result as: If you reached here then you've successfully used MongoDB in your Java EE 6 application, congratulations! Some food for thought and further play ... SQL to MongoDB mapping shows mapping between traditional SQL -> Mongo query language. Tutorial shows fun things you can do with MongoDB. Try the interactive online shell  The cookbook provides common ways of using MongoDB In terms of this project, here are some tasks that can be tried: Encapsulate database management in a JPA persistence provider. Is it even worth it because the capabilities are going to be very different ? MongoDB uses "BSonObject" class for JSON representation, add @XmlRootElement on a POJO and how a compatible JSON representation can be generated. This will make the fromXXX and toXXX methods redundant.

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• juju bootstrap fails with a local environment, why?

  - by Braiam

  Each time I try to bootstrap juju using a local enviroment it fails starting the juju-db-braiam-local script as follows: $ sudo juju --debug --verbose bootstrap 2013-10-20 02:28:53 INFO juju.provider.local environprovider.go:32 opening environment "local" 2013-10-20 02:28:53 DEBUG juju.provider.local environ.go:210 found "10.0.3.1" as address for "lxcbr0" 2013-10-20 02:28:53 DEBUG juju.provider.local environ.go:234 checking 10.0.3.1:8040 to see if machine agent running storage listener 2013-10-20 02:28:53 DEBUG juju.provider.local environ.go:237 nope, start some 2013-10-20 02:28:53 DEBUG juju.environs.tools storage.go:87 Uploading tools for [raring precise] 2013-10-20 02:28:53 DEBUG juju.environs.tools build.go:109 looking for: juju 2013-10-20 02:28:53 DEBUG juju.environs.tools build.go:150 checking: /usr/bin/jujud 2013-10-20 02:28:53 INFO juju.environs.tools build.go:156 found existing jujud 2013-10-20 02:28:53 INFO juju.environs.tools build.go:166 target: /tmp/juju-tools243949228/jujud 2013-10-20 02:28:53 DEBUG juju.environs.tools build.go:217 forcing version to 1.14.1.1 2013-10-20 02:28:53 DEBUG juju.environs.tools build.go:37 adding entry: &tar.Header{Name:"FORCE-VERSION", Mode:420, Uid:0, Gid:0, Size:8, ModTime:time.Time{sec:63517832933, nsec:278894120, loc:(*time.Location)(0x108fda0)}, Typeflag:0x30, Linkname:"", Uname:"ubuntu", Gname:"ubuntu", Devmajor:0, Devminor:0, AccessTime:time.Time{sec:63517832933, nsec:278894120, loc:(*time.Location)(0x108fda0)}, ChangeTime:time.Time{sec:63517832933, nsec:278894120, loc:(*time.Location)(0x108fda0)}} 2013-10-20 02:28:53 DEBUG juju.environs.tools build.go:37 adding entry: &tar.Header{Name:"jujud", Mode:493, Uid:0, Gid:0, Size:19179512, ModTime:time.Time{sec:63517832933, nsec:274894120, loc:(*time.Location)(0x108fda0)}, Typeflag:0x30, Linkname:"", Uname:"ubuntu", Gname:"ubuntu", Devmajor:0, Devminor:0, AccessTime:time.Time{sec:63517832933, nsec:274894120, loc:(*time.Location)(0x108fda0)}, ChangeTime:time.Time{sec:63517832933, nsec:274894120, loc:(*time.Location)(0x108fda0)}} 2013-10-20 02:28:55 INFO juju.environs.tools storage.go:106 built 1.14.1.1-raring-amd64 (4196kB) 2013-10-20 02:28:55 INFO juju.environs.tools storage.go:112 uploading 1.14.1.1-precise-amd64 2013-10-20 02:28:55 INFO juju.environs.tools storage.go:112 uploading 1.14.1.1-raring-amd64 2013-10-20 02:28:55 INFO juju.environs.tools tools.go:29 reading tools with major version 1 2013-10-20 02:28:55 INFO juju.environs.tools tools.go:34 filtering tools by version: 1.14.1.1 2013-10-20 02:28:55 INFO juju.environs.tools tools.go:37 filtering tools by series: precise 2013-10-20 02:28:55 DEBUG juju.environs.tools storage.go:41 reading v1.* tools 2013-10-20 02:28:55 DEBUG juju.environs.tools storage.go:61 found 1.14.1.1-precise-amd64 2013-10-20 02:28:55 DEBUG juju.environs.tools storage.go:61 found 1.14.1.1-raring-amd64 2013-10-20 02:28:55 INFO juju.environs.boostrap bootstrap.go:57 bootstrapping environment "local" 2013-10-20 02:28:55 INFO juju.environs.tools tools.go:29 reading tools with major version 1 2013-10-20 02:28:55 INFO juju.environs.tools tools.go:34 filtering tools by version: 1.14.1.1 2013-10-20 02:28:55 INFO juju.environs.tools tools.go:37 filtering tools by series: precise 2013-10-20 02:28:55 DEBUG juju.environs.tools storage.go:41 reading v1.* tools 2013-10-20 02:28:55 DEBUG juju.environs.tools storage.go:61 found 1.14.1.1-precise-amd64 2013-10-20 02:28:55 DEBUG juju.environs.tools storage.go:61 found 1.14.1.1-raring-amd64 2013-10-20 02:28:55 DEBUG juju.provider.local environ.go:395 create mongo journal dir: /home/braiam/.juju/local/db/journal 2013-10-20 02:28:55 DEBUG juju.provider.local environ.go:401 generate server cert 2013-10-20 02:28:55 INFO juju.provider.local environ.go:421 installing service juju-db-braiam-local to /etc/init 2013-10-20 02:28:56 ERROR juju.provider.local environ.go:423 could not install mongo service: exec ["start" "juju-db-braiam-local"]: exit status 1 (start: Job failed to start) 2013-10-20 02:28:56 ERROR juju supercommand.go:282 command failed: exec ["start" "juju-db-braiam-local"]: exit status 1 (start: Job failed to start) error: exec ["start" "juju-db-braiam-local"]: exit status 1 (start: Job failed to start) What is the reason for this error and how to solve it?

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• How to remove the Mint stuff from my system after installing MATE desktop using MINT repository

  - by tinuz

  I installed the MATE desktop using this manual http://www.unixmen.com/linux-tutorials/linux-distributions/linux-distributions4-ubuntu/1975-install-linuxmint12-extensions-mate-a-mgse-in-ubuntu-1110- but now i can't open my Ubuntu Software Center and can't open the settings from the update manager. I removed mate desktop but it doesn't fix the problem, i also reinstalled the software center, software-properties-gtk and software-properties-common using: sudo apt-get update; sudo apt-get --purge --reinstall install software-center software-properties-common software-properties-gtk. But when using this line i get the following error: Reading package lists... Done Reading package lists... Done Building dependency tree Reading state information... Done 0 upgraded, 0 newly installed, 3 reinstalled, 0 to remove and 0 not upgraded. Need to get 0 B/735 kB of archives. After this operation, 0 B of additional disk space will be used. (Reading database ... 304824 files and directories currently installed.) Preparing to replace software-center 5.0.2 (using .../software-center_5.0.2_all.deb) ... Unpacking replacement software-center ... Preparing to replace software-properties-common 0.81.13.1 (using .../software-properties-common_0.81.13.1_all.deb) ... Unpacking replacement software-properties-common ... Preparing to replace software-properties-gtk 0.81.13.1 (using .../software-properties-gtk_0.81.13.1_all.deb) ... Unpacking replacement software-properties-gtk ... Processing triggers for desktop-file-utils ... Processing triggers for gnome-menus ... Processing triggers for bamfdaemon ... Rebuilding /usr/share/applications/bamf.index... Processing triggers for hicolor-icon-theme ... Processing triggers for man-db ... Processing triggers for shared-mime-info ... Unknown media type in type 'all/all' Unknown media type in type 'all/allfiles' Unknown media type in type 'uri/mms' Unknown media type in type 'uri/mmst' Unknown media type in type 'uri/mmsu' Unknown media type in type 'uri/pnm' Unknown media type in type 'uri/rtspt' Unknown media type in type 'uri/rtspu' Unknown media type in type 'interface/x-winamp-skin' Setting up software-center (5.0.2) ... Traceback (most recent call last): File "/usr/sbin/update-software-center", line 38, in <module> from softwarecenter.db.update import rebuild_database File "/usr/share/software-center/softwarecenter/db/update.py", line 59, in <module> from softwarecenter.db.database import parse_axi_values_file File "/usr/share/software-center/softwarecenter/db/database.py", line 26, in <module> from softwarecenter.db.application import Application File "/usr/share/software-center/softwarecenter/db/application.py", line 25, in <module> from softwarecenter.backend.channel import is_channel_available File "/usr/share/software-center/softwarecenter/backend/channel.py", line 25, in <module> from softwarecenter.distro import get_distro File "/usr/share/software-center/softwarecenter/distro/__init__.py", line 165, in <module> distro_instance=_get_distro() File "/usr/share/software-center/softwarecenter/distro/__init__.py", line 148, in _get_distro module = __import__(distro_id, globals(), locals(), [], -1) ImportError: No module named LinuxMint Setting up software-properties-common (0.81.13.1) ... Setting up software-properties-gtk (0.81.13.1) ... $ Is there a way to fix this problem without having to reinstall Ubuntu 11.10?? thanks in advance tinuz

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• Software Center not opening after installing Ice from Peppermint

  - by darkapex

  Software Center is not opening since I installed "Ice" software (used in Peppermint OS) from ppa:kendalltweaver/peppermint and i keep getting this error - $ software-center ERROR:root:DebFileApplication import Traceback (most recent call last): File "/usr/share/software-center/softwarecenter/db/__init__.py", line 3, in <module> from debfile import DebFileApplication File "/usr/share/software-center/softwarecenter/db/debfile.py", line 25, in <module> from softwarecenter.db.application import Application, AppDetails File "/usr/share/software-center/softwarecenter/db/application.py", line 28, in <module> from softwarecenter.backend.channel import is_channel_available File "/usr/share/software-center/softwarecenter/backend/channel.py", line 25, in <module> from softwarecenter.distro import get_distro File "/usr/share/software-center/softwarecenter/distro/__init__.py", line 194, in <module> distro_instance = _get_distro() File "/usr/share/software-center/softwarecenter/distro/__init__.py", line 169, in _get_distro module = __import__(distro_id, globals(), locals(), [], -1) ImportError: No module named Peppermint

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• Can’t start MySQL on Ubuntu 12.04 after restored from innobackupex

  - by RAH

  I can’t start MySQL on Ubuntu 12.04 after restored backup from innobackupex. Before I tried to restore the db from backup I moved the datadir and got the same problem. With help from google I fixed the problem and got MySQL started. Ready to set up my new slave, I restored the backup via innobackupex –-copy-path /db/mysql, and now I can’t start MySQL. I am sure of the following: In my.cnf the datadir = /db/mysql The new datadir is chown mysql:mysql. The /etc/apparmor.d/usr.sbin.mysqld contains: #/var/lib/mysql/ r, #/var/lib/mysql/** rwk, /db/mysql r, /db/mysql** rwk, AND /var/run/mysqld/mysqld.pid w, /var/run/mysqld/mysqld.sock w, /run/mysqld/mysqld.pid w, /run/mysqld/mysqld.sock w, /var/log/syslog gives me the following info: http://pastebin.com/1TQGsaBH What am I missing? Thanks.

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• SSO in Weblogic server

  - by Tridib Samanta

  Configuring Single Sign-On in Oracle Fusion Middleware ReferenceOracle Fusion Middleware Security OverviewOracle Fusion Middleware Security GuideOracle Fusion Middleware Securing Oracle WebLogic Server

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• The Debut of Oracle Database Firewall at RSA 2011

  - by Troy Kitch

  We're very proud of the coverage and headlines Oracle Database Firewall made this past week during RSA Conference 2011 in San Francisco. In case you missed our previous post, we announced the availability of this latest addition to the Oracle Defense-in-Depth database security solutions. The announcement was picked up many publications including eWeek, CRN, InformationWeek and more. Here is just some of the press on this very important security solution: "It's rare to find a new product category these days, but I think a new product from Oracle fills the bill. In the crowded enterprise security field, that's saying something." Enterprise System Journal: A New Approach to Database Security By James E. Powell "Databases and the content they store are among the most valuable IT assets - and the most targeted by hackers. In an effort to help secure databases, Oracle today is launching the new Oracle Database Firewall as an approach to defend databases against SQL injection and other database attacks." Database Journal: Oracle Debuts Database Firewall (also appeared in InternetNews.com) By Sean Michael Kerner "Oracle Database Firewall understands SQL-statement formats, and can be configured to blacklist and whitelist traffic based on source. When it detects suspicious statements within SQL traffic -- ones that might indicate SQL injection attacks, for example -- it can replace them with neutral statements that will keep the session running without allowing potentially harmful traffic through." Network World: Oracle Database Firewall defuses SQL injection attacks By Tim Green "The firewall uses "SQL grammar analysis" to prevent SQL injection attacks and other attempts to grab information. The Oracle Database Firewall features white and black lists policies, exceptions and rules that mark the time of day, IP address, application and user." ZDNet: RSA Roundup: Oracle Database Firewall By Larry Dignan "The database giant announced Oracle Database Firewall on Feb. 14 at the RSA Conference in San Francisco. The firewall application establishes a "defensive perimeter" around databases by monitoring and enforcing normal application behavior in real-time, the company said." eWEEK: Oracle Database Firewall Delivers Vendor-Agnostic Security By Fahmida Y. Rashid

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• Raw Materials - Derek on Alert

  Arthur's security blanket lulls him to sleep.

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• Ask the Readers: Share Your Tips for Defeating Viruses and Malware

  - by Mysticgeek

  We’ve shared some of our best tips for dealing with malware over the years, and now it’s your turn! Share your favorite tips for protecting against, or getting rid of viruses and other types of malicious software. Unfortunately, if you’re a PC user it’s a given that you have to play defense against various forms of Malware. We’ve written several articles showing how to get rid of viruses and other forms of malware over the years using various strategies. We have some excellent articles explaining how to get rid of Advanced Virus Remover, Antivirus Live, Internet Security 2010, and Security Tool – all of which disguise themselves as legit antivirus apps. Now we turn it over to you to share your favorite tips and tricks for defending against malicious infections. If your computer has been infected, what steps did you take to get rid of it and clean up your machine? Leave a comment below and join in the discussion! Similar Articles Productive Geek Tips How To Remove Security Tool and other Rogue/Fake Antivirus MalwareNorton Antivirus 2010 [Review]How To Remove Internet Security 2010 and other Rogue/Fake Antivirus MalwareHow To Remove Antivirus Live and Other Rogue/Fake Antivirus MalwareHow-To Geek Comment Policy TouchFreeze Alternative in AutoHotkey The Icy Undertow Desktop Windows Home Server – Backup to LAN The Clear & Clean Desktop Use This Bookmarklet to Easily Get Albums Use AutoHotkey to Assign a Hotkey to a Specific Window Latest Software Reviews Tinyhacker Random Tips Revo Uninstaller Pro Registry Mechanic 9 for Windows PC Tools Internet Security Suite 2010 PCmover Professional Make your Joomla & Drupal Sites Mobile with OSMOBI Integrate Twitter and Delicious and Make Life Easier Design Your Web Pages Using the Golden Ratio Worldwide Growth of the Internet How to Find Your Mac Address Use My TextTools to Edit and Organize Text

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• links for 2010-04-27

  - by Bob Rhubart

  @oracletechnet: Oracle Technology Network Newsletters Revisited "You may find this hard to believe, but some analysts contend that email newsletters are still among the most preferred methods of "information awareness" by developers today. And in our experience, the numbers back it up: subscriptions to Oracle Technology Network newsletters grow organically by 15% every year, even after you take continual list cleanup into account. " -- Justin Kestelyn (tags: oracle otn newsletters developers architects) Sylvain Duloutre: Directory Services as a Web Service Sylvain Duloutre shares a WSDL file he created to deal with issues involved in XML binding generation. (tags: oracle sun wsdl webservices DSEE netbeans jdeveloper) Nick Wooler: Iron-Clad Cloud: Secure Cloud Computing "One solution to the security problem with cloud services can be overcome using Service Oriented Security. The Oracle approach to using Service Oriented Security allows developers to pull from a centralized, authoritative source of identity services. This allows developers to build security into every application from the inside-out. This is critical to ensuring this is done in a standardized manner and most importantly it allows developers to develop without being security experts." -- Nick Wooler (tags: oracle sun security cloud saas) Andy Mulholland: A week of visits; Cisco, HP, Oracle, SAP and VMware (in alphabetical order!) "I now am considering that we should be thinking about ‘clouds’ in virtual way, by which I mean that a succession of virtual ‘clouds’ will need to exist, each possessing specific characteristics that suit certain types of services. Really it’s no different to what we see with servers today. Adding a hypervisor to a server adds new flexibility, but creating a virtualised environment means much more. What I suspect will happen is that we will start to use vendor specific approaches to building what I will term a physical cloud solution using their technology and approach to supporting a specific objective, but with time we will find these physical clouds will interoperate as a fully virtualised cloud environment." -- Andy Mulholland (tags: entarch enterprisearchitecture cloudcomputing virtualization) @fteter: Highlights From The Bright Lights - Tuesday #c10 Oracle Ace Director Floyd Teter of JPL with one last wrap-up of Collaborate 10. (tags: oracle otn collaborate2010 las vegas) Rittman Mead India – Call for very good Oracle BI Developers/Architects "Now that we have an office in India and if you are interested in joining us, do drop us a line at [email protected], and we will be glad to have technical discussions with you. If you are also an Oracle BI, DW or EPM customer looking for help on projects in the Asia-Pacific region, again we’ll be pleased to hear from you and to let you know how we can help." -- Venkatakrishnan J (tags: otn oracle jobs india developers architects software)

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• Apache Bug Prompts Update Advice

  IT security firm Sense of Security has demonstrated how a vulnerability in older versions of the Web server could giver hackers control over databases.

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• Creating an email notification system based on polling database rows

  - by Ashish Sharma

  I have to design an email notification system based on the following requirements: The email notifications would be created based on polling rows in a Mysql 5.5 DB table when they are in a particular 'Completed' state. The email notification should be sent out in no more than 5 minutes from the time the row was created in the DB table (At the time of DB table row creation the state of the row might not be 'Completed'). Once 5 minutes for the DB table row expire in reaching the 'Completed' state, separate email notification need to be sent (basically telling the user that the original email notification would be delayed) and then sending the email notification as and when the row state reaches to being 'Completed'. The rest of the system requirements are : Adding relevant checks to monitor the whole system via MBeans interface. The system should be scalable so that if the rate of DB table rows creation increases so does the Email notification system be able to ramp up. So I request suggestions on following lines: What approach should I take in solving the problem described from a programming/Design pattern point of view? Suggestion for any third party plugin/software that can be used to solve the problem described? Points to take care regarding scalability and monitoring the health of the system? Java is the language of preference but I am open to using off the shelf components that can be interfaced with Java language or provide standard ports for communication. Currently I do have an in house grown system (written in Java) that is catering to the specified requirements, but it's now crumbling under increased load and now I want to give the problem a fresh look. thanks in advance Ashish

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• TFS 2010 Server Name Change

  - by PearlFactory

  So I thought I would  change the name of my machine so that the other devs can find the TFS server easily. TFS 2005 would use the cool cmd line util tfsadminutil.....alas he is now gone HERE Are the steps to complete Edit the web.config and is usually located on default install C:\Program Files\Microsoft Team Foundation Server 2010\Application Tier\Web Services\web.config <add key="applicationDatabase" value="Data Source=JUSTIN\SQLI01;Initial Catalog=Tfs_Configuration;Integrated Security=True;" /> Next step is to edit previous Solutions/Projects 1) Open the Solution file i.e ProductApp.sln 2) Edit the SccTeamFoundationServer URL under Global section i.e Change this to new name   If you have DB server on same machine ...you will need to go in and remove existing db user account assigned to the tfs DB Remove old [%machine_name%] value i.e Tuned_Dev_PC_12\Justin user from the above DBs No add the new Justin\Justin user account associated with the new machine name to the TFS & Reporing dbs ... dbo or the TFSADMIN & TFSEXEC roles either will do in this case. (or add both ) Now either ReApply user or add New account (remove old account i.e Tuned_Dev_PC_12\justin) If DB permisions are setup correctyly you will get a screen that looks like this   If it pauses or gets stuck you need to look back at the adding correct DB Perms to the i.e JUSTIN\Justin user account Also if your project is still complaining about old TFS name 1) Team\Connect new Team Foundation Server 2) Add\Remove TFS 3) Add New TFS Name  Once you have connected to the new TFS server Reload your project from TFS..this way it removes a lot of the bugs that hang around in the local project\solution This is similar to a VSS2005 and older fix Cheers ( eta about 60-90 mins so weigh up the the need vs payoff. ) Shutdown restart

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• Raw Materials - Derek on Alert

  Arthur's security blanket lulls him to sleep.

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