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Articles indexed Thursday August 30 2012

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• Apps Script Developer Chat: Andrew Stillman

  Apps Script Developer Chat: Andrew Stillman Join us for a chat with Andrew Stillman, the developer of several popular scripts in the Script Gallery, such as formMule, formMutant, autoCrat, doctopus, and more. We'll talk with Andrew about his experiences with Apps Script and how he applies it to his work at New Visions for Public Schools and with youpd.org. From: GoogleDevelopers Views: 0 0 ratings Time: 00:00 More in Science & Technology

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• App Scripts Office Hours - August 30, 2012

  App Scripts Office Hours - August 30, 2012 In this week's episode of Google Apps Script office hours, Eric and Ikai: - Highlight a blog post on Google Analytics in Apps Script (goo.gl - Answer questions about Charts Dashboards and other topics. - Discuss the upcoming Apps Script hackathon in Austin, Texas (goo.gl To find out when the next office hours will be held visit: developers.google.com From: GoogleDevelopers Views: 135 16 ratings Time: 33:51 More in Science & Technology

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• .NET development on a Retina MacBook Pro with Windows 8

  - by Jeff

  I remember sitting in Building 5 at Microsoft with some of my coworkers, when one of them came in with a shiny new 11” MacBook Air. It was nearly two years ago, and we found it pretty odd that the OEM’s building Windows machines sucked at industrial design in a way that defied logic. While Dell and HP were in a race to the bottom building commodity crap, Apple was staying out of the low-end market completely, and focusing on better design. In the process, they managed to build machines people actually wanted, and maintain an insanely high margin in the process. I stopped buying the commodity crap and custom builds in 2006, when Apple went Intel. As a .NET guy, I was still in it for Microsoft’s stack of development tools, which I found awesome, but had back to back crappy laptops from HP and Dell. After that original 15” MacBook Pro, I also had a Mac Pro tower (that I sold after three years for $1,500!), a 27” iMac, and my favorite, a 17” MacBook Pro (the unibody style) with an SSD added from OWC. The 17” was a little much to carry around because it was heavy, but it sure was nice getting as much as eight hours of battery life, and the screen was amazing. When the rumors started about a 15” model with a “retina” screen inspired by the Air, I made up my mind I wanted one, and ordered it the day it came out. I sold my 17”, after three years, for $750 to a friend who is really enjoying it. I got the base model with the upgrade to 16 gigs of RAM. It feels solid for being so thin, and if you’ve used the third generation iPad or the newer iPhone, you’ll be just as thrilled with the screen resolution. I’m typically getting just over six hours of battery life while running a VM, but Parallels 8 allegedly makes some power improvements, so we’ll see what happens. (It was just released today.) The nice thing about VM’s are that you can run more than one at a time. Primarily I run the Windows 8 VM with four cores (the laptop is quad-core, but has 8 logical cores due to hyperthreading or whatever Intel calls it) and 8 gigs of RAM. I also have a Windows Server 2008 R2 VM I spin up when I need to test stuff in a “real” server environment, and I give it two cores and 4 gigs of RAM. The Windows 8 VM spins up in about 8 seconds. Visual Studio 2012 takes a few more seconds, but count part of that as the “ReSharper tax” as it does its startup magic. The real beauty, the thing I looked most forward to, is that beautifully crisp C# text. Consolas has never looked as good as it does at 10pt. as it does on this display. You know how it looks great at 80pt. when conference speakers demo stuff on a projector? Think that sharpness, only tiny. It’s just gorgeous. Beyond that, everything is just so responsive and fast. Builds of large projects happen in seconds, hundreds of unit tests run in seconds… you just don’t spend a lot of time waiting for stuff. It’s kind of painful to go back to my 27” iMac (which would be better if I put an SSD in it before its third birthday). Are there negatives? A few minor issues, yes. As is the case with OS X, not everything scales right. You’ll see some weirdness at times with splash screens and icons and such. Chrome’s text rendering (in Windows) is apparently not aware of how to deal with higher DPI’s, so text is fuzzy (the OS X version is super sharp, however). You’ll also have to do some fiddling with keyboard settings to use the Windows 8 keyboard shortcuts. Overall, it’s as close to a no-compromise development experience as I’ve ever had. I’m not even going to bother with Boot Camp because the VM route already exceeds my expectations. You definitely get what you pay for. If this one also lasts three years and I can turn around and sell it, it’s worth it for something I use every day.

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• Fixing Chrome&rsquo;s AJAX Request Caching Bug

  - by Steve Wilkes

  I recently had to make a set of web pages restore their state when the user arrived on them after clicking the browser’s back button. The pages in question had various content loaded in response to user actions, which meant I had to manually get them back into a valid state after the page loaded. I got hold of the page’s data in a JavaScript ViewModel using a JQuery ajax call, then iterated over the properties, filling in the fields as I went. I built in the ability to describe dependencies between inputs to make sure fields were filled in in the correct order and at the correct time, and that all worked nicely. To make sure the browser didn’t cache the AJAX call results I used the JQuery’s cache: false option, and ASP.NET MVC’s OutputCache attribute for good measure. That all worked perfectly… except in Chrome. Chrome insisted on retrieving the data from its cache. cache: false adds a random query string parameter to make the browser think it’s a unique request – it made no difference. I made the AJAX call a POST – it made no difference. Eventually what I had to do was add a random token to the URL (not the query string) and use MVC routing to deliver the request to the correct action. The project had a single Controller for all AJAX requests, so this route: routes.MapRoute( name: "NonCachedAjaxActions", url: "AjaxCalls/{cacheDisablingToken}/{action}", defaults: new { controller = "AjaxCalls" }, constraints: new { cacheDisablingToken = "[0-9]+" }); …and this amendment to the ajax call: function loadPageData(url) { // Insert a timestamp before the URL's action segment: var indexOfFinalUrlSeparator = url.lastIndexOf("/"); var uniqueUrl = url.substring(0, indexOfFinalUrlSeparator) + new Date().getTime() + "/" + url.substring(indexOfFinalUrlSeparator); // Call the now-unique action URL: $.ajax(uniqueUrl, { cache: false, success: completePageDataLoad }); } …did the trick.

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• MVC 4 Authentication

  - by Aligned

  First: After searching for awhile to figure out what’s new/different with MVC 4 and forms authentication, this is the best article I've found on the subject: http://weblogs.asp.net/jgalloway/archive/2012/08/29/simplemembership-membership-providers-universal-providers-and-the-new-asp-net-4-5-web-forms-and-asp-net-mvc-4-templates.aspx Some quotes from the article: “The ASP.NET Web Pages team designed SimpleMembership to (wait for it) simplify the task of dealing with membership” "WSAT is built to work with ASP.NET Membership, and is not compatible with Simple Membership. There are two main options there: Use the WebSecurity and OAuthWebSecurity API to manage the users and roles Create a web admin using the above APIs Since SimpleMembership runs on top of your database, you can update your users as you would any other data - via EF or even in direct database edits (in development, of course)" “If you want to use an existing ASP.NET Membership Provider in ASP.NET MVC 4, you can't use the new AccountController. You can do a few things:” “Universal Providers do not work with Simple Membership.” ~ this post (look for Bob.at.SBS’s answer) says Universal Providers is not needed for MVC 4 to work in Azure)   I've been trying to figure out the Forms Authentication in MVC4. It's different than the past approach (aspnet_regsql). If you do file new project -> MVC 4 -> internet application, you get a really nice template with the controller and model setup for you. However, the tables are different than using aspnet_regsql and the ASP.Net Configuration tool (WSAT) wasn’t connecting to the data I had (it was creating an App_Data/aspnet.mdf file, which I didn’t see right away). Points of Note The database tables are created in the SimpleMembershipInitializer class, when you first run your app using Entity Framework 5 migration functionality. The tables created are webpages_Membership, webpages_OAuthMembership, webpages_Roles, webpages_UsersInRoles, UserProfile. Web.config settings don’t seem to be needed.   Scott Hanselman on Universal Providers was also useful if not somewhat out dated. Universal Providers and SimpleMembership are not compatible. http://www.asp.net/web-pages/tutorials/security/16-adding-security-and-membership – walk-through

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• New Items in ReSharper 7!

  - by TATWORTH

  At http://tv.jetbrains.net/videocontent/webinar-whats-new-in-resharper-7 there is an excellent video on a selection of the new items in ReSharper 7.As I have said before, if you develop in C# or VB.NET, you should use ReSharper. Now it has been extended to allow unit testing of JavaScript. The above video mentions a possible extension to ReSharper for F#.There are more videos on ReSharper at http://tv.jetbrains.net/channel/resharper

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• Leadership Tip&ndash;Vent Up!

  - by D'Arcy Lussier

  Leadership is difficult, for many reasons. One of those reasons is that we not only need to keep ourselves motivated when difficult or challenging times come, but we also need to motivate our teams and keep them focussed on the tasks at hand regardless of the mortars being rained down around them. Inexperienced (and experienced) leaders can fall into the “me-too” mentality – that is, the leader sees themselves as part of the team member instead of the leader of the team. Once a leader changes the teams view that he/she is a peer and not the leader, dynamics can change on the team. One of the biggest dangers is that the leader starts sharing frustrations, fears, concerns, etc. with the team that they’re supposed to be leading on to victory. This can destroy a team’s morale and productivity. One simple thing you can do to counter this is remember this rule when it comes to venting: Vent Up! Don’t vent sideways or down, vent up. Vent to the people above you – they’re the ones that tend to have the power to actually change things anyway. You as a leader stay healthy by getting your frustrations and concerns off your chest, your team is still insulated from it, and your superiors are aware of issues that need to be addressed or can coach you through the obstacles. D

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• Using 1and1.com Servers, SMTP Mail is Limited - Local XAMPP Server Works As Expected

  - by nicorellius

  I'm starting to not like 1and1.com that much. I've used them for years, but mainly for simple sites without much need for configuration. I know there are better hosting companies out and I may go seeking them. The problem here is that on my Local XAMPP server (sitting on a network with Comcast ISP), I have a PHP script that uses PEAR::Mail to send mail using MIME. The script works find locally with either smtp.1and1.com and corresponding credentials and smtp.gmail.com with corresponding credentials, using appropriate ports, etc. 1and1 tells me that I have to change the MX record on the domain where this script runs in order to make this work. This doesn't make sense to me. Now I'm pretty new to all this, but how is it that this is the case? Why can my local server work just fine, out of the box, but their servers not? I have asked them these questions, but they are very vague and I cannot get any good answers from them. Versions: PEAR Version: 1.5.0 PHP Version: 4.4.9 Zend Engine Version: 1.3.0 My apologies in advance for my ignorance. Thanks for the help in advance.

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• Why can't I copy .zip files from a server to a server in a different domain?

  - by Kyralessa

  At work, we're using a Windows Server 2008 R2 VM as our build server. At the end of the build process for any of our projects, we copy the packaged deployment files to a folder on the server where they'll be deployed. (This is done in a batch command by a service account.) For most of our projects, which deploy to a Windows Server 2008 R2 VM, this step goes swimmingly. But for one project, which deploys to a Windows Server 2003 R2 VM which resides in a different domain on our network, the .zip files return "Access is denied" and don't copy, though all of the other files copy correctly. Our sysadmins say they haven't prevented this in group policy or by other means. If I'm logged in the build server as myself and run the copy in the command window, I can't copy the .zip files over either, so it's not just a matter of the service account's permissions. If I log into the 2003 server and then copy from the build server to the 2003 server, using the command window, it works, whether I run as myself or as our service account. Only .zip files cause the "Access is denied" problem. Even a (fake) .exe file copies correctly. All of our other projects have .zip files, and they copy to their 2008 R2 server correctly. Is there a way I can get the Windows Server 2003 R2 VM to accept .zip files copied from our build server?

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• rsync - failed to set permission - operation not permitted

  - by Jerome Ansia

  I got the following command with this error rsync -avz --links -O /home/jansiatest/.jenkins/workspace/svn_to_demo/trunk/CPS/ [email protected]:/home/tasklite/temp sending incremental file list ./ rsync: failed to set permissions on "/home/tasklite/temp/.": Operation not permitted (1) But the thing is that i don't want to change permission of "/home/tasklite/temp/". How can i set that?

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• rsync server, uploaded files permissions incorrect

  - by fred basset

  I'm trying to setup an rsync server on my Ubuntu machine. Transfer from a local PC to the server via rsync does work, but the resultant uploaded files have no r,w or x bits set, e.g. ---------- 1 fredb fredb 0 Aug 30 20:50 sk_upgrade_20120830_033450.txt ---------- 1 fredb fredb 0 Aug 30 20:50 sk_user_20120827_184534.txt ---------- 1 fredb fredb 0 Aug 30 20:50 sk_user_20120830_033450.txt My rsyncd.conf file is: motd file = /etc/rsyncd.motd [workspace] path = /tmp comment = rsync server uid = nobody gid = nobody read only = false auth users = fredb secrets file = /etc/rsyncd.scrt How can I get the target files permissions correct? Also once I've solved this problem how can I transfer without a password? TY, Fred

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• Active Directoy GPO

  - by Phillip R.

  I am looking into some weird issues with active directory and group policy. This domain has been upgraded from windows NT and has a few different administrators over the years. I am looking through the Default Domain group policy and Default Domain Controller group policy. In the security areas and I will use the log on locally area as an example, it shows SIDes that begin with asterisks and are quite long they look sort of like the following *S-1-5-21-787626... Normally, when I see something like this I would think that the User account was no longer there and this was never cleaned up. Am I wrong in my assumption? Thanks in advance

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• Cannot WMI Query root\MSCluster namespace as Local Admin

  - by Matt Zuberko

  I'm trying to use WMI Explorer to query the root\MSCluster namespace on various hosts to obtain cluster resource group and resource object data. I can access the namespace with no issue on Win2K3 cluster nodes but am getting an access denied error attempting to connect to Win2K8 and Win2K8R2 nodes. I can access the root\cimv2 namespace with no issue, just the MSCluster namespace even though I am a local Admin. Is there a feature setting, local security policy or server role I have to be a member of to access the namespace? Thank you!

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• Maximum execution time of 300 seconds exceeded error while importing large MySQL database

  - by Spacedust

  I'm trying to import 641 MB MySQL database with a command: mysql -u root -p ddamiane_fakty < domenyin_damian_fakty.sql but I got an error: ERROR 1064 (42000) at line 2351406: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '<br /> <b>Fatal error</b>: Maximum execution time of 300 seconds exceeded in <b' at line 253 However limits are set much higher: mysql> show global variables like "interactive_timeout"; +---------------------+-------+ | Variable_name | Value | +---------------------+-------+ | interactive_timeout | 28800 | +---------------------+-------+ 1 row in set (0.00 sec) and mysql> show global variables like "wait_timeout"; +---------------+-------+ | Variable_name | Value | +---------------+-------+ | wait_timeout | 28800 | +---------------+-------+ 1 row in set (0.00 sec)

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• Recently used contacts getting corrupted Outlook 2010

  - by advis12

  We are using Microsoft's Identity Integration Feature Pack to sync contacts between two separate domains at two separate branches of our company. Recently we have run into an issue with a few of the contacts being pulled/synced from this remote location. When people in our organizaion are sending emails to certain contacts that are being synced from the remote location, the message delivery fails. After looking into the issue we are seeing that this failure is the result of the email being sent to some obscure email address rather than the correct email address. For example, the email address is getting changed to IMCEAEX_O=NT5_ou=44C5AE1BBEE0ED499F607407769311BB_cn=2F31FA0CA187314FA8D6A99BEFC52C36@domain.com rather than [email protected] Clearing the recently used contact list seems to solve the issue, but it does not solve the underlying problem. Because this issue is starting to happen to several different people I would like to solve the underlying cause. Does anyone have any input on how to start troubleshooting this issue? Also, we are using Exchange 2010. Thank you for taking the time to look at this.

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• PowerShell Remoting: No credentials are available in the security package

  - by TheSciz

  I'm trying to use the following script: $password = ConvertTo-SecureString "xxxx" -AsPlainText -Force $cred = New-Object System.Management.Automation.PSCredential("domain\Administrator", $password) $session = New-PSSession 192.168.xxx.xxx -Credential $cred Invoke-Command -Session $session -ScriptBlock { New-Cluster -Name "ClusterTest" -Node HOSTNAME } To remotely create a cluster (it's for testing purposes) on a Windows Server 2012 VM. I'm getting the following error: An error occurred while performing the operation. An error occurred while creating the cluster 'ClusterTest'. An error occurred creating cluster 'ClusterTest'. No credentials are available in the security package + CategoryInfo : NotSpecified: (:) [New-Cluster], ClusterCmdletException + FullyQualifiedErrorId : New-Cluster,Microsoft.FailoverClusters.PowerShell.NewClusterCommand All of my other remote commands (installing/making changes to DNS, DHCP, NPAS, GP, etc) work without an issue. Why is this one any different? The only difference is in the -ScriptBlock tag. Help!

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• ADFS v.2.0 transitive trust in a federation scenario

  - by masi

  Currently i'm working with ADFS to establish a federated trust between two separated domains. My question is simple: does ADFS v. 2.0 support transitive trust across federated identity providers? I know that ADFS v 1.0 does not, as stated in this document on page 9. But when looking on the claims rules that come with ADFS 2.0 it seems to be possible, as a Microsoft partner confirmed. However: the documentation on this topic is a mess! Simply no ADFS v. 2.0 related statements on this topic that i was able to find (IF you got any documentation on this PLEASE help me out guys!). To be more clear, lets assume this scenario: Federation provider (A) trust federation provider (B) which trusts identity provider (C). So, does (A) trust identities comming from (C) across (B)? Also, if it is possible there are some things that i'm specially interested in: Is it possible to restrict the transitive trust in ADFS in any way? If so, how? How does the transitive trust affect the Issuer and OriginalIssuer properties of the claims? If transitive trust is used together with claims transformations and provider (B) would transform incomming claims from (C) in a way that they are transformed into (new) claims of same type an value, how would this affect the Issuer and OriginalIssuer properties?

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• Set up homeserver with single IP to host multiple sites on Ubuntu [closed]

  - by Ortix92

  I am trying to set up my homeserver so it can function as a regular server one would rent. I am running Ubuntu 12.04 LTS with openpanel. I have a single static IP address. I am used to having two addresses and pointing them to NS1.domain.tld and NS2.domain.tld and setting up the propper DNS records. I would also like to mention I am somewhat new to DNS zones. Either way, how would I go about setting this up correctly (in openpanel) with just a single IP address if possible at all? I have also read about free solutions online, but I would like to keep everything secure and private so other people can't peer into my data somehow. Thanks!

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• What ways are there to set permissions on an Exchange 2003 mailbox?

  - by HopelessN00b

  I'm having a difficult/impossible time tracing down a permissions issue on an Exchange 2003 mailbox, and I was wondering if I'm missing any technical possibilities here. The basic question is what ways are there to set a user's permissions to access a mailbox in Exchange 2003? I know of two. Permissions on the mailbox itself (Mailbox Rights) and having delegated rights. And then, if it's possible, how would one view all the permissions (including delegated permissions) on the mailbox? The situation is that a new user who's been set up "exactly like all the others" in his department (pretty sure he was copied via the right click option in ADUC, in fact) can't access a specific shared mailbox, which I've been assured about a dozen other people do have access to and access on a regular basis. As to how they got permissions to the mailbox, no one knows, so it must have been granted by a white wizard whose spell has since worn off, so now IT has to handle it instead. Anyway... This mailbox is a normal AD user, created as a service account, for which no one knows the password (of course), so it's probably not the case that this service account was being used to delegate permissions. Upon taking examining the Mailbox Rights directly... Here are the permissions I see: This leads me to believe that one of two things are happening - the managers have been delegating full mailbox permissions to the rest of the department, or everyone's logging in using... not their own account. But, before I get too excited about the prospect of busting out the LART and strolling over to that department, I want to make sure I'm not missing another possible explanation. Like most of the rest of the world, I ditched Exchange 2003 at the earliest possible opportunity, and had been looking forward to never seeing it again, so I'm a bit rusty on the intricacies of how it [mostly, sort of] works. Anyone see any or possibilities, or things I may have missed, or does the LART get to come out and play?

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• How to redirect a name-based VirtualHost to a different port?

  - by Andra

  I have a virtuoso sparql endpoint installed, which I want to make available through a hostname (e.g. www.virtuosoexample.com). The thing with virtuoso is that the is no Document root. The endpoint is initiated by the daemon and made available through a source port (e.g. localhost:1234/) I know how to set a virtual host pointing to a document root, but i don't know how to do this for a server with a port number. Any advice would be appreciated. Below is the code, how I would do it with a document root. I tried to change that (naively) into localhost:1234/sparql, but that didn't work <VirtualHost * ServerName www.virtuosoexample.com <www.virtuosoexample.com> ServerAlias www.virtuosoexample.com <www.virtuosoexample.com> ErrorLog /var/log/apache2/error.wp-sparql.log # Possible values include: debug, info, notice, warn, error, crit, # alert, emerg. LogLevel warn CustomLog /var/log/apache2/access.wp-sparql.log combined DocumentRoot /var/www/endpoint/sparql/ <Directory /var/www/endpoint/sparql> Options Indexes FollowSymLinks MultiViews AllowOverride All Order allow,deny allow from all </Directory> </VirtualHost

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• MySQL slow query log logging all queries

  - by Blanka

  We have a MySQL 5.1.52 Percona Server 11.6 instance that suddenly started logging every single query to the slow query log. The long_query_time configuration is set to 1, yet, suddenly we're seeing every single query (e.g. just saw one that took 0.000563s!). As a result, our log files are growing at an insane pace. We just had to truncate a 180G slow query log file. I tried setting the long_query_time variable to a really large number to see if it stopped altogether (1000000), but same result. show global variables like 'general_log%'; +------------------+--------------------------+ | Variable_name | Value | +------------------+--------------------------+ | general_log | OFF | | general_log_file | /usr2/mysql/data/db4.log | +------------------+--------------------------+ 2 rows in set (0.00 sec) show global variables like 'slow_query_log%'; +---------------------------------------+-------------------------------+ | Variable_name | Value | +---------------------------------------+-------------------------------+ | slow_query_log | ON | | slow_query_log_file | /usr2/mysql/data/db4-slow.log | | slow_query_log_microseconds_timestamp | OFF | +---------------------------------------+-------------------------------+ 3 rows in set (0.00 sec) show global variables like 'long%'; +-----------------+----------+ | Variable_name | Value | +-----------------+----------+ | long_query_time | 1.000000 | +-----------------+----------+ 1 row in set (0.00 sec)

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• TCP Keepalive and firewall killing idle sessions

  - by Carlos A. Ibarra

  In a customer site, the network team added a firewall between the client and the server. This is causing idle connections to get disconnected after about 40 minutes of idle time. The network people say that the firewall doesn't have any idle connection timeout, but the fact is that the idle connections get broken. In order to get around this, we first configured the server (a Linux machine) with TCP keepalives turned on with tcp_keepalive_time=300, tcp_keepalive_intvl=300, and tcp_keepalive_probes=30000. This works, and the connections stay viable for days or more. However, we would also like the server to detect dead clients and kill the connection, so we changed the settings to time=300,intvl=180,probes=10, thinking that if the client was indeed alive, the server would probe every 300s (5 minutes) and the client would respond with an ACK and that would keep the firewall from seeing this as an idle connection and killing it. If the client was dead, after 10 probes, the server would abort the connection. To our surprise, the idle but alive connections get killed after about 40 minutes as before. Wireshark running on the client side shows no keepalives at all between the server and client, even when keepalives are enabled on the server. What could be happening here? If the keepalive settings on the server are time=300,intvl=180,probes=10, I would expect that if the client is alive but idle, the server would send keepalive probes every 300 seconds and leave the connection alone, and if the client is dead, it would send one after 300 seconds, then 9 more probes every 180 seconds before killing the connection. Am I right? One possibility is that the firewall is somehow intercepting the keepalive probes from the server and failing to pass them on to the client, and the fact that it got a probe makes it think that the connection is active. Is this common behavior for a firewall? We don't know what kind of firewall is involved. The server is a Teradata node and the connection is from a Teradata client utility to the database server, port 1025 on the server side, but we have seen the same problem with an SSH connection so we think it affects all TCP connections.

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• Known Hosts ECDSA Host Key Multiple Domains on One IP

  - by Jonah

  Hello, world!, I have a VPS set up with multiple domain names pointing to it. Arbitrarily, I like to access it via SSH through the domain name I'm dealing with. So for example, if I'm doing something with example1.com, I'll log in with ssh [email protected], and if I'm working with example2.com, I'll log in with ssh [email protected]. They both point to the same user on the same machine. However, because SSH keeps track of the server's fingerprint, it tells me that there is an offending host key, and makes me confirm access. $ ssh [email protected] Warning: the ECDSA host key for 'example2.com' differs from the key for the IP address '123.123.123.123' Offending key for IP in /home/me/.ssh/known_hosts:33 Matching host key in /home/me/.ssh/known_hosts:38 Are you sure you want to continue connecting (yes/no)? Is there a way to ignore this warning? Thanks!

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• How to whitelist a domain while blocking forgeries using that domain?

  - by QuantumMechanic

  How do you deal with the case of: wanting to whitelist a domain so that emails from it won't get eaten, but not having emails forged to appear to be from that domain get bogusly whitelisted whitelist_from_recvd looks promising, but then you have to know at least the TLD of every host that could send you mail from that domain. Often RandomBigCompany.com will outsource email to one or more sending companies (like Constant Contact and the like) in addition to using servers that reverse-resolve to something in its own domain. But it looks like whitelist_from_recvd can only map to one sending server pattern so that would be problematic. Is there a way to say something like "if email is from domain X, subtract N points from the spam score"? The idea would be that if the mail is legit, that -N will all but guarantee it isn't considered spam. But if it is spam, hopefully all the other failed tests will render it spam even with the -N being included.

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• Implications of Multiple JobTracker nodes in a Hadoop cluster?

  - by Jim Dennis

  I get the impression that one can, potentially, have multiple JobTracker nodes configured to share the same set of MR (TaskTracker) nodes. I know that, conventionally, all the nodes in a Hadoop cluster should have the same set of configuration files (conventionally under /etc/hadoop/conf/ --- at least for the Cloudera Distribution of Hadoop (CDH). Can we define multiple Job Trackers in mapred-site.xml? Something like: <configuration> <property> <name>mapred.job.tracker</name> <value>jt01.mydomain.not:8021</value> </property> <property> <name>mapred.job.tracker</name> <value>jt02.mydomain.not:8021</value> </property> ... </configuration> Or is there some other allowed syntax for this? What are the implications of doing this. Does each JobTracker get information about the load on each TaskTracker node. In other words can the two JobTracker co-ordinated their scheduling across the TT nodes only based on the gossip information from the TTs or would they need to talk to one another? Is this documented anywhere?

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