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• Webcast: Applications Integration Architecture

  - by LuciaC

  Webcast: Applications Integration Architecture - Overview and Best Practices Date:  November 12, 2013.Join us for an Overview and Best Practices live webcast on Applications Integration Architecture (AIA). We are covering following topics in this Webcast : AIA Overview AIA - Where it Stands Pre-Install, Pre-Upgrade Concerns Understanding Dependency Certification Matrix Documentation Information Center Demonstration - How to evaluate certified combination Software Download/Installable Demonstration - edelivery Download Overview Reference Information Q & A (15 Minutes)  We will be holding 2 separate sessions to accommodate different timezones: EMEA / APAC - timezone Session : Tuesday, 12-NOV-2013 at 09:00 UK / 10:00 CET / 14:30 India / 18:00 Japan / 20:00 AEDT Details & Registration : Doc ID 1590146.1 Direct registration link USA - timezone Session : Wednesday, 13-NOV-2013 at 18:00 UK / 19:00 CET / 10:00 PST / 11:00 MST / 13:00 EST Details & Registration : Doc ID 1590147.1 Direct registration link If you have any question about the schedules or if you have a suggestion for an Advisor Webcast to be planned in future, please send an E-Mail to Ruediger Ziegler. Remember that you can access a full listing of all future webcasts as well as replays from Doc ID 740966.1.

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• Passing PATH through sudo

  - by whitequark

  In short: how to make sudo not to flush PATH everytime? I have some websites deployed on my server (Debian testing) written with Ruby on Rails. I use Mongrel+Nginx to host them, but there is one problem that comes when I need to restart Mongrel (e.g. after making some changes). All sites are checked in VCS (git, but it is not important) and have owner and group set to my user, whereas Mongrel runs under the, huh, mongrel user that is severely restricted in it's rights. So Mongrel must be started under root (it can automatically change UID) or mongrel. To manage mongrel I use mongrel_cluster gem because it allows starting or stopping any amount of Mongrel servers with just one command. But it needs the directory /var/lib/gems/1.8/bin to be in PATH: this is not enough to start it with absolute path. Modifying PATH in root .bashrc changed nothing, tweaking sudo's env_reset and keepenv didn't either. So the question: how to add a directory to PATH or keep user's PATH in sudo?

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• Issues while installing no machine setup (NX )

  - by TopCoder

  I am trying to connect to NX server from windows client but it reports following exception NX 203 NXSSH running with pid: 5404 NX 285 Enabling check on switch command NX 285 Enabling skip of SSH config files NX 285 Setting the preferred NX options NX 200 Connected to address: 10.43.51.77 on port: 22 NX 202 Authenticating user: nx NX 208 Using auth method: publickey NX 204 Authentication failed. I have regenearted the default_dsa.key on server and imported the same for client but still not working. Any solutions?

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• Change Gnome popup menus / combo boxes mouse click behaviour

  - by pingw33n

  Whe right clicking in windows that have popup menus you can hold mouse button, wait until popup appears and release above the desired item to click it. This is different from Windows that have popup appear only on mouse release. And it leads to accident menu item clicking sometimes. Looks like the issue is there: https://bugs.launchpad.net/ubuntu/+bug/320259, https://bugzilla.gnome.org/show_bug.cgi?id=575071. Is there's any way to change popup appearance time at least?

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• how to `tail` the latest file in a directory

  - by Itay Moav

  In shell, how can I tail the latest file created in a directory?

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• network latency, TCP and UDP packets

  - by user115848

  Hello recently my network has started to cause me lots of problems. I have a cable modem, connected to a tp-link router (with some port forwarding). Everything was working fine then i started to get lots of udp (port 53) "UNREPLIED" logs in the router. Now there are tcp UNREPLIED logs too. This is causing lots of latency and failed connections when trying to connect to different internet sites. Also, we run an openfire server for spark connections, and I believe its causing connectivity issues for some users who are trying to connect using Spark (some people connect fine, others don't). Please see screen shot below for packet logs. It has to be something internally, as I connected straight to the comcast modem and i was able to connect to the internet and various sites as normal. I tried to swap out the router with a different and got the same issue. I scanned both my internal dns servers for viruses or malware and it came up empty. Another anomaly is that when i try to connect to www.cnn.com, i get redirected to the different site. I scanned my own machine for hijacks. Not sure if this is related to the networking issue. Please let me know if you have any ideas for troubleshooting.

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• OpenWRT based gateway with dnsmasq and internal server with bind

  - by Peter

  I have router based on OpenWRT which has dnsmasq 2.59. Inside my local area network I have a NS server bind. This server has internal and external views for a couple of my domains. My router forwards port 53 TCP and UDP from outside IP (router WAN) to this server. For the external clients everything works fine. In order to organize the internal view, I decided to add the exception to /etc/dnsmasq.conf server=/mydomain1.com/192.168.1.1 server=/mydomain2.com/192.168.1.1 server=/mydomain3.com/192.168.1.1 (192.168.1.1 - IP address of the NS server) According to dnsmasq manstrong text: More specific domains take precendence over less specific domains, so: --server=/google.com/1.2.3.4 --server=/www.google.com/2.3.4.5 will send queries for *.google.com to 1.2.3.4, except *www.google.com, which will go to 2.3.4.5 this domain name with all the sub-domains is supposed to be forward to my NS server. Everything works (SOA, NS, MX, CNAME, TXT, SRV etc.) except for A-record: # nslookup -type=a mydomain1.com Server: 192.168.1.100 Address: 192.168.1.100#53 *** Can't find mydomain1.com: No answer 192.168.1.100 - IP address of my router (dnsmasq) However, I can get the answer for the TXT-record query: # nslookup -type=txt mydomain1.com Server: 192.168.1.100 Address: 192.168.1.100#53 mydomain1.com text = "v=spf1 include:mydomain1.com -all" When I just specify the local IP of my NS server (direct access to the server without using dnsmasq) then the results are: # nslookup -type=a mydomain1.com 192.168.1.1 Server: 192.168.1.1 Address: 192.168.1.1#53 Name: mydomain1.com Address: 192.168.1.1 There is a similar situation with the MX-record: C:\>nslookup -type=mx mydomain1.com Server: router.lan Address: 192.168.1.100 mydomain1.com MX preference = 10, mail exchanger = mail.mydomain1.com mydomain1.com nameserver = ns.mydomain1.com mail.mydomain1.com internet address = 192.168.1.1 ns.mydomain1.com internet address = 192.168.1.1 C:\>nslookup -type=a mail.mydomain1.com Server: router.lan Address: 192.168.1.100 *** No address (A) records available for mail.mydomain1.com This is a dig result: # dig +nocmd mydomain1.com any +multiline +noall +answer mydomain1.com. 86400 IN SOA ns.mydomain1.com. hostmaster.mydomain1.com. ( 121204007 ; serial 28800 ; refresh (8 hours) 7200 ; retry (2 hours) 604800 ; expire (1 week) 3600 ; minimum (1 hour) ) mydomain1.com. 86400 IN NS ns.mydomain1.com. mydomain1.com. 86400 IN A 192.168.1.1 mydomain1.com. 604800 IN MX 10 mail.mydomain1.com. mydomain1.com. 3600 IN TXT "v=spf1 include:mydomain1.com -all" When I try to ping: # ping mydomain1.com ping: cannot resolve mydomain1.com: Unknown host Is it a bug of dnsmasq 2.59? How to manage this problem?

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• Configuration Help for Sendmail Required

  - by Vinayak Mahadevan

  Hi I need some help with respect to sendmail configuration. The basic problem is that I have some employees working from other places and they need access to their mail. So what I have done right now is whatever mails which are meant for them which are generated from within the company and collected by my internal mail server is bounced to an external mail server from where the employees access it. This is done through a email id on a different domain. This was working fine till I restricted the external mailing access for certain users using rulesets in sendmail.cf. Once I had put that in place only people who had external mailing rights could send mails to people outside the office. What I would like to know is that is there anyway where I can expose sendmail on two different ips and thereby configure everybody's email id to point to the same internal mail server using 2 different ips. one ip when inside the company and one ip outside the company. Is it possible that I have one static ip configured for both internal access and external access or is there any otherway it can be done with sendmail. Can anybody help me Sorry for the long post Regards Vinayak

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• Apache2 BufferedLogs On - anybody using it ?

  - by Qiqi

  Greetings, I am wondering, whether anybody is using BufferedLogs On with Apache2 and found any issues ? Feature is marked as experimental, but for many years now, so I guess it's rather pretty stable. I am running some servers with constrained disk IO capacity at the moment, so I turned it on hoping that even a small benefit could help in the long run ;-) I do have several to several hundreds requests per seconds so by my thoughts there is really no need to write to log after each request, cause honestly I don't think that my filesystem is the best handler for many unnecessary writes. (OCFS2 shared among several DomUs in the Xen)

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• Bash command substitution not working as expected

  - by Joe Fruchey

  I'd like to view the last few lines of a file, but I want the columns aligned. Basically, I want to disable wordwrap. This is straightforward with: tail $FILE | cut -c -80 But I'm trying to generalize my script for other users, and I'd like to cut to the actual terminal width, which I can get with: stty size | cut -d" " -f2 So I would imagine that I could just tail $FILE | cut -c -`stty size | cut -d" " -f2` but it doesn't work: stty: standard input: Invalid argument cut: invalid range with no endpoint: - Try `cut --help' for more information. (Same results with the 'new' $() expansion.) Now, if I echo it, it seems fine: echo cut -c -`stty size | cut -d" " -f2` cut -c -103 Am I just missing an escape char? Or is this somehow just not possible? Thanks.

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• Regenerating /usr/share/locale/

  - by jbjuly

  Is there a way to regenerate deleted locale on /usr/share/locale without downloading the application again?

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• Where to find Ubuntu One logs

  - by Stéphane

  Ubuntu one does not synchronize files since I upgraded from 9.10 to 10.04. The preferences panel keeps showing "Synchronization in progress...", but files are not downloaded from the repository. It does not show any error message. Where do I find the programm logs, where I can investigate my problem?

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• sudoer scheme for another web developer that retains my future control of a virtual server?

  - by Tchalvak

  Background: Virtual Private Server I have a virtual private server that I'm looking to host multiple websites on, and provide access to another web developer. I don't care about putting too many constraints on him, though I wouldn't mind isolating the site that he'll be developing from other sites on the server that I will develop. The problem: retain control Mainly what I want is to make sure that I retain control over the server in the future. I want to reserve the ability to create/promote/demote and other administrative functions that don't deal with web software. If I make him an admin, he can sudo su - and become root and remove root control from me, for example. I need him not to be able to: take away other admin permissions change the root password have control over other security/administrative functions I would like him to still be able to: install software (through apt-get) restart apache access mysql configure mysql/apache reboot edit web development configuration type files in /etc/ Other Standard Setups would be happily considered I've never really set up a good sudoers file, so simple example setups would be very useful, even if they're only somewhat similar to the settings that I'm hoping for above. Edit: I have not yet finalized permissions, standard, useful sudo setups are certainly an option, the lists above are more what I'm hoping I can do, I don't know that that setup can be done.

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• Error when starting qpidd as a service

  - by Sparks

  I have recently swapped from CENTOS 5 to FEDORA 17. Previously I have created my own init.d scripts successfully (albeit not for qpidd) however, in FEDORA I cannot get it to work. I have created the following script (called qpidd) in the init.d directory: #!/bin/bash # # /etc/rc.d/init.d/qpidd # # QPID/AMQP Broker scripts # # # chkconfig: 2345 20 80 # description: QPID/AMQP Broker service # processname: qpidd # pidfile: /var/lock/subsys/qpidd # Source function library. . /etc/init.d/functions SERVICENAME=qpidd start() { echo -n "Starting $SERVICENAME: " daemon qpidd -d & retval=$? touch /var/lock/subsys/$SERVICENAME return $retval } stop() { echo -n "Shutting down $SERVICENAME: " qpidd -q & retval=$? rm -f /var/lock/subsys/$SERVICENAME return $retval } case "$1" in start) start ;; stop) stop ;; status) status qpidd ;; restart) stop start ;; condrestart) [ -f /var/lock/subsys/<service> ] && restart || : ;; *) echo "Usage: $SERVICENAME {start|stop|status|restart" exit 1 ;; esac exit $? After this, I ran chkconfig --add qpidd, however, now when I run sudo service qpidd start I get the following message: Starting qpidd (via systemctl): Job failed. See system journal and 'systemctl status' for details. If I then run systemctl status qpidd I get the following message: Failed to issue method call: Unit name qpidd is not valid. I am now lost, I have search the web and Stack Overflow but cannot find anybody with similar problem, any help or direction to a website that can help would be much appreciated Sparks :)

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• bash code in rc.local not excuting after bootup

  - by mrTomahawk

  Does anyone know why a system would not execute the script code within rc.local on bootup? I have a post configuration bash script that I want to run after the initial install of VMware ESX (Red Hat), and for some reason it doesn't seem to execute. I have the setup to log its start of execution and even its progress so that I can see how far it gets in case it fails at some point, but even when I look at that log, I am finding that didn't even started the execution of the script code. I already checked to see that script has execution permissions (755), what else should I be looking at? Here is the first few lines of my code: #!/bin/sh echo >> /tmp/configLog "" echo >> /tmp/configLog "Entering maintenance mode"

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• How can I register a custom protocol with xdg ?

  - by julien

  I've been struggling this morning trying to associate an application with a custom protocol, namely emacsclient and org-protocol. I'm calling this protocol from a webbrowser bookmarklet, and I get the following behaviour : In chromium, the "Launch Application" dialog comes up, and calls xdg-open org-protocol://... which ends up firing a new chromium frame. In firefox, I've tried setting network.protocol-handler.app.org-protocol to an empty string or my emacsclient path, anyhow I get the following error message : "Firefox doesn't know how to open this address, because the protocol (org-protocol) isn't associated with any program" without even showing any external application selection dialog. I'm not using any desktop environment, so I need to make this work strictly with xdg, however, despite reading the shared mime info spec etc, I still can't fathom a working configuration.

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• Use AssignUserId as variable in Apache MPM ITK

  - by Robert Hanson

  I heard that the MPM-ITK module for Apache can change Apache server's behaviour to access some folder / file using the UID or GID from the default UID (www-data) into a given UID on the configuration. For example: <IfModule mpm_itk_module> AssignUserId user group </IfModule> Is it possible to make the username and group a variable? I want to make Apache access the /home folder as its owner. For example /home/me can only be accessed by the user me, while /home/you can only be accessed you.

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• Setting the Timezone with an automated script

  - by Tom

  I'm writing scripts to automate setting up new slicehost installations. In a perfect world, after I started the script, it would just run, with no attention from me. I have succeeded, with one exception. How do I set the timezone, in a permanent (survive reboot) and sane (adjust for standard and daylight savings time, so no just forcing the date) ... manner that doesn't require input from me? Currently, I'm using dpkg-reconfigure tzdata This doesn't seem to have any way to force parameters into it. It demands user input. EDIT: I'm editing here, rather than commenting, since comments don't seem to allow code blocks. Here's the actual code I ended up with, based on Rudedog's comment below. I also noticed that this doesn't update /etc/timezone. I'm not certain who uses that, but in case anybody does, I'm setting that too. TIMEZONE="America/Los_Angeles" echo $TIMEZONE > /etc/timezone cp /usr/share/zoneinfo/${TIMEZONE} /etc/localtime # This sets the time

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• Can TP-Link router make phone calls?

  - by Umair Ashraf

  I have a TP-Link router with DSL service provided by a local company which serves it over the landline phone. My landline cord is plugged into an ethernet router which is then plugged into TP-Link wireless router. I can access internet with this wireless router all over my home with all computers. Landline Cord [into] Ethernet Router [into] TP-Link Wireless Router [air] Computers I would add that landline cord is also into a phone device which I use to make calls and that's not cordless. Now I am accessing internet via WiFi on my laptop and want to ask if is this possible to make landline calls via this same computer I am surfing internet through? What I am asking it to a dial-up via TP-Link router that goes through landline. You see the landline cord is the actual data gateway and is also used to make calls. So it can simultaneously send Data and Voice over the same wire.

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• Force logout a user

  - by Mithun

  I When I logged into the machine as root and typed who to see which users are logged in, I found somebody else too logged in as root devuser pts/0 2011-11-18 09:55 (xxx.xxx.xxx.xxx) root pts/1 2011-11-18 09:56 (xxx.xxx.xxx.xxx) testuser pts/2 2011-11-18 14:54 (xxx.xxx.xxx.xxx) root pts/3 2011-11-18 14:55 (xxx.xxx.xxx.xxx) How can I force a root user at pts/3 to logout?

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• Apache configuration to access directory

  - by Felipe Hummel

  I'm on Ubuntu 9.10. My web application is in a directory on my /home/me/app . I want to configure Apache in such a way that I can access my app through a directory. For example: People can access my machine through domain.com. What I would like to do is access my web application (located at /home/me/app) through a directory, using something like: domain.com/myapp. How can I set up the apache configuration for this kind of behavior? Of course, I do not want to move all my application to /var/www/myapp. Thanks

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• Httpd restart "Address already in use" error

  - by mtndesign

  I have an .rpm, which I created. In its %post part, I do some stuff, and in the end of this script, i call service httpd restart. It gives the following error: + service httpd restart Stopping httpd: [FAILED] Starting httpd: (98)Address already in use: make_sock: could not bind to address [::]:81 (98)Address already in use: make_sock: could not bind to address 0.0.0.0:81 no listening sockets available, shutting down Unable to open logs [FAILED] I got this from the rpm verbose installing (-vv). So I know its about httpd restart itself, nothing else. The according to netstat only one process (httpd) is listening on port 81. $ sudo netstat -nlp | grep 81 tcp 0 0 :::81 :::* LISTEN 29670/httpd I don't understand, why running http FAILS at stop, and FAILS again in start. Any ideas how to solve this?

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• Creating a tar file with checksums included

  - by wazoox

  Here's my problem : I need to archive to tar files a lot ( up to 60 TB) of big files (usually 30 to 40 GB each). I would like to make checksums ( md5, sha1, whatever) of these files before archiving; however not reading every file twice (once for checksumming, twice for tar'ing) is more or less a necessity to achieve a very high archiving performance (LTO-4 wants 120 MB/s sustained, and the backup window is limited). So I'd need some way to read a file, feeding a checksumming tool on one side, and building a tar to tape on the other side, something along : tar cf - files | tee tarfile.tar | md5sum - Except that I don't want the checksum of the whole archive (this sample shell code does just this) but a checksum for each individual file in the archive. I've studied GNU tar, Pax, Star options. I've looked at the source from Archive::Tar. I see no obvious way to achieve this. It looks like I'll have to hand-build something in C or similar to achieve what I need. Perl/Python/etc simply won't cut it performance-wise, and the various tar programs miss the necessary "plugin architecture". Does anyone know of any existing solution to this before I start code-churning ?

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• Proxying from nginx to Jetty

  - by newbie

  I'm proxying request from nginx to Jetty, but I have problem with request that Jetty receives. Jetty requests shows that request IP address is 127.0.0.1. But I want real server IP and my site has multiple domains, so when request is coming from some domain name to my server, it must available in Jetty request too. nginx config: server { listen 80; ## listen for ipv4 listen [::]:80 default ipv6only=on; ## listen for ipv6 server_name localhost; access_log /var/log/nginx/localhost.access.log; location / { proxy_pass http://127.0.0.1:8080; proxy_set_header X-Real-IP $remote_addr; } } Servlet request: Dump Servlet getMethod: GET getContentLength: -1 getContentType: null getRequestURI: /dump/info getRequestURL: http://127.0.0.1:8080/dump/info getContextPath: getServletPath: /dump getPathInfo: /info getPathTranslated: /tmp/jetty-0.0.0.0-8080-test.war-_-any-/webapp/info getQueryString: null getProtocol: HTTP/1.0 getScheme: http getServerName: 127.0.0.1 getServerPort: 8080 getLocalName: 127.0.0.1 getLocalAddr: 127.0.0.1 getLocalPort: 8080 getRemoteUser: null getUserPrincipal: null getRemoteAddr: 127.0.0.1 getRemoteHost: 127.0.0.1 getRemotePort: 50905 getRequestedSessionId: 6ubs42zhm5q61k5hm84ni3ib isSecure(): false isUserInRole(admin): false getLocale: en_US getLocales: en_US getLocales: en

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• Connect to SVN through Eclipse on Ubuntu

  - by Gene R

  We have a Subversion server running on an internal server. I'm trying to connect to it through SubClipse (Eclipse) on Ubuntu. When I enter the URL: svn://servername/site/trunk as I do from Windows. I get the following error: Error validating location: "org.tigris.subversion.javahl.ClientException: svn: Malformed network data" Anybody got any ideas?

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