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• Going from dev to sysadmin advice [on hold]

  - by dotnetdev

  I've seen the threads on here about transitions to/from sysadmin. My story is I am a dev (technology is irrelevant), but in learning that technology it required a lot of server infrastructure. In the last few years, I thus had to setup a lot of infrastructure (AD, DNS, SQL etc) to learn said technology. I've noticed that I've enjoyed doing sysadmin and got quite good at it, and find it even engrossing (e.g. I am amazed by how decievingly complicated AD is, under the hood). I'm now thinking of moving into IT infrastructure after about 4 years in various dev (.NET) roles. Any advice? My concern is that I don't have any experience with hardware load balancers and firewalls like F5 etc, which some jobs require. How could I compensate for that? Also, I'm rubbish with my hands, would this be a factor? (i.e. maintaining physical kit)? Thanks

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• Need some help with Apache .htaccess

  - by Legend

  I am trying to setup an application that was built using the Zend framework. Let's say my subdomain is: http://subdomain.domain.com and that it points to the following: http://www.domain.com/projectdir/ The structure of the project dir is the following: application/ ... ... library/ ... ... public/ ... ... .htaccess The contents of the htaccess are: SetEnv APPLICATION_ENV production RewriteEngine On # skip existing files and folders RewriteCond %{REQUEST_FILENAME} -s [OR] RewriteCond %{REQUEST_FILENAME} -l [OR] RewriteCond %{REQUEST_FILENAME} -d RewriteRule ^.*$ - [NC,L] # send everything to index RewriteRule ^.*$ index.php [NC,L] While this works, the child objects on the page are being directed to the domain i.e., the image URLs (and the CSS files etc.) are broken because they are being redirected to something like: http://www.domain.com/images/image.png Can someone please tell me how to fix this?

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• Oracle E-Business Suite Plug-in 4.0 Released for OEM 11g (11.1.0.1)

  - by Steven Chan

  [Feb. 25, 12:40 PM Update: Removed incorrect references to RHEL 3, SLES 9, HP-UX 11.11, Solaris 8]We're very pleased to announce the release of Oracle E-Business Suite Plug-in 4.0, an integral part of Application Management Suite for Oracle E-Business Suite.The management suite combines features in the standalone Application Management Pack (AMP) for Oracle E-Business Suite and Application Change Management Pack (ACMP) for Oracle E-Business Suite with Oracle's real user monitoring and configuration management capabilities.  The features that were available in the standalone Application Management Pack and Application Change Management Pack for Oracle E-Business Suite are now packaged into the Oracle E-Business Suite Plug-in 4.0.  The Oracle E-Business Suite Plug-in 4.0 is now fully certified with Oracle Enterprise Manager 11g Grid Control.  This latest plug-in extends Grid Control with E-Business Suite specific management capabilities and features enhanced change management support.  The Oracle E-Business Suite Plug-in is released via patch 8333939.  For the AMP and ACMP 4.0 installation guide, see:Getting Started with Oracle E-Business Suite Plug-in Release 4.0 (Note 1224313.1)General AMP & ACMP improvementsOracle Enterprise Manager 11g Grid Control SupportApplication Management Pack 4.0 and Application Change Management Pack 4.0 for Oracle E-Business Suite are certified with Oracle Enterprise Manager 11g Grid Control Release 1 (11.1.0.1.0).Built-in Diagnostic Ability Release 4.0 has numerous major enhancements that provide the necessary intelligence to determine if the product has been installed and configured correctly. There are diagnostics for Discovery, Cloning, and User Monitoring that will validate if the appropriate patches, privileges, setups, and profile options have been configured. This feature improves the setup and configuration process.

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• Squid traffic tunneled through VPN

  - by NerdyNick

  So what I'm trying to do is have a Squid Proxy run on 1 machine along side a VPN connection. What I want to happen is all traffic running though the Squad Proxy would run though the VPN for its outbound. ie Desktop - (Squid Proxy - VPN) The goal is to allow my desktop selective tunneling through the VPN. So that Instant Messaging and the like that do not need to run through the VPN can go through my normal traffic. Typically I would go though a SSH Proxy but currently am forced to use VPN to gain entry into the office, and a Squid proxy seemed like it might work out the easiest for what I am needing. EDIT Realize I forgot to actually state what problem I'm running into. I have the Squid setup and verified it works, but once I connect to the VPN. All requests to Squid get accepted but Squid is unable to make the request over the VPN. So the client ends up just sitting there.

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• Allow VMWare client to connect only via VPN

  - by Frank Meulenaar

  I have a VMWare (currently using Workstation on Vista, but thinking about switching to ESX) client with Windows XP. I've installed OpenVPN in the client and it connects to the corporate VPN server. I want to make sure that all traffic from the Windows XP machine goes trough this VPN tunnel, but I can't change any settings on the corporate VPN server. Is it possible to restrict the internet connectivity of the Windows XP client in such a way that it can only send packets to the IP of the corporate VPN server? In that way it'd be impossible for packets to bypass the tunnel. I've looked at NAT configurations but couldn't see how I could make this setup.

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• How can I diff two Redhat Linux servers?

  - by Stuart Woodward

  I have two servers that have should have the same setup except for known differences. By running: find / \( -path /proc -o -path /sys -o -path /dev \) -prune -o -print | sort > allfiles.txt I can find a list of all the files on one server and compare it against the list of files on the the other server. This will show me the differences in the names of the files that reside on the servers. What I really want to do is run a checksum on all the files on both of the servers and compare them to also find where the contents are different. e.g find / \( -path /proc -o -path /sys -o -path /dev \) -prune -o -print | xargs /usr/bin/sha1sum Is this a sensible way to do this? I was thinking that rysnc already has most of this functionality but can it be used to provide the list of differences?

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• can't access SAMBA shares on UBUNTU-server from other computers

  - by larand

  Installed UBUNTU-server 12.04 and configured /etc/samba/smb.conf as: #======================= Global Settings ======================= [global] workgroup = HEMMA server string = %h server (Samba, Ubuntu) security = user wins support = yes dns proxy = no log file = /var/log/samba/log.%m max log size = 1000 syslog = 0 panic action = /usr/share/samba/panic-action %d encrypt passwords = no passdb backend = tdbsam obey pam restrictions = yes unix password sync = yes passwd program = /usr/bin/passwd %u passwd chat = *Enter\snew\s*\spassword:* %n\n *Retype\snew\s*\spassword:* %n\n *password\supdated\ssuccessfully* . pam password change = yes map to guest = bad user ############ Misc ############ usershare allow guests = yes #======================= Share Definitions ======================= [printers] comment = All Printers browseable = no path = /var/spool/samba printable = yes guest ok = no read only = yes create mask = 0700 # Windows clients look for this share name as a source of downloadable # printer drivers [print$] comment = Printer Drivers path = /var/lib/samba/printers browseable = yes read only = yes guest ok = no [Bilder original] comment = Original bilder path = /mnt/bilder/org browseable = yes read only = no guest ok = no create mask = 0755 [Bilder publika] comment = Bilder för allmän visning path = /mnt/bilder/public browseable = yes read only = yes guest ok = yes [Musik] comment = Musik path = /mnt/music/public browseable = yes read only = yes guest ok = yes I have a network setup around a 4G router "HUAWEI B593" where some computers are connected by WIFI and others by LAN. The server is connected by LAN. On one computer running windows XP I can see the server but are not allowed to acces them. On another computer on the WIFI-net running win7 I cannot see the server at all but I can ping the server and I can see the smb-protocoll is running when sniffing with wireshark. I don't primarily want to use passwords, computers on the lan and wifi should be able to connect without any login-procedure. I'm sure my config is not sufficient but have hard to understand how I should do. Theres a lot of descriptions on the net but most is old and none have been of any help. I'm also confused by the fact that I can not se the sever on my win7-machine even though it communicates with the samba-server. Would be very happy if anyone could spread some light over this mess.

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• Cannot install Windows 8 Transformation Pack on Windows 7

  - by Mehper C. Palavuzlar

  I am trying to install Windows 8 Transformation Pack v4.0 on my Sony Vaio laptop with the following options: When I run (as administrator) the setup file, it starts to install but gives the following error at some point: The file 'C:\Windows\Fonts\segoui.ttf' could not be opened. Please check that your disk is not full and that you have access to the destination directory. Since I run the installer as administrator, this error message seems strange to me. Segoe UI font is also installed on my PC. When I try to install with default system fonts (without Segoe UI), it gives the same error again: What should I do to solve this problem?

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• Second DocumentRoot for certain URLS

  - by scrr

  Hello, I have the following setup in my apache-config: <VirtualHost 1.2.3.4:80> ServerName example.com:80 ServerAlias www.example.com DocumentRoot /var/www/page <Location "/blog"> DocumentRoot /var/www/blog </Location> RailsBaseURI / RailsEnv development </VirtualHost> However, Apache tells me, I am not allowed to have a second DocumentRoot. How can I make "www.example.com/blog" point to "/var/www/blog"? I'm sure this is basic, but I just can't find the proper documentation online.

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• Ubuntu server - Problem of routing

  - by Max

  Hi, I have setup a Ubuntu server with Ubuntu Enterprise Cloud. The server is connected to a private LAN with DHCP and Internet access (via a gateway). At first, the server was working fine. It can ping the internet. It can also ping other machine inside LAN. The problem happened after i let the machine idle for more than 1 hour. When I want to use the machine again, I can't ping the internet anymore. I can only ping the machine inside LAN. I try to ping the server from another machine and it's working. Then, i ssh into that server from another machine, and I found that I can ping the internet from that server. It seems that there are some problems in the routing table of this server. Can anyone help me on this? Thank you. Max

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• What is the simplest, open-source webmail frontend available?

  - by josePhoenix

  I am working on a project to create a few extremely stripped down interfaces for common Web/Internet tasks in order to make computers accessible to my visually impaired grandmother. Currently she uses Mac OS X Mail.app, but I had the idea that I could re-skin a webmail interface running on my own server to make it easier for her to use. The ideal webmail interface to use as a starting point would be without frames or AJAX and written in Python, Perl, or PHP5+, though any setup could work as long as the template and stylesheet files were separate from the application itself. This frontend must also connect to a remote IMAP server, since her email account is with her ISP and not on my server. Can anyone recommend a bare-bones, no-nonsense webmail interface that would work for this?

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• How can I diagnose a "502 Bad Gateway" response from an Apache/Tomcat configuration?

  - by Structure

  I just finished up configuring a fairly default configuration of Tomcat. My Apache configuration was pre-existing and post-tomcat it still has no issues. I am using mod_jk to (if I am saying this correctly) interface between Apache and Tomcat and have my conf files setup for my workers, etc. I put my test file (Simply: http://tomcat.apache.org/tomcat-4.1-doc/appdev/sample/web/hello.jsp) into my tomcat/webapps/ directory and then call it via http://localhost/test/hello.jsp. From here Apache returns a "502 Bad Gateway" response. I confirmed this via the Apache logs, but beyond that I have no idea how to diagnose the issue. I assume the 502 is because Tomcat did not respond. I'd like to confirm if Tomcat received the request, but cannot locate the log file. At this point I had thought my installation was complete, so not sure where to go from here. Any input would be appreciated.

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• VPS DNS Resolution problem

  - by fatnic

  Hi. I've recently moved from a shared hosting to a VPS at vps.net but I think I might have broken it already! I have domain.com and domain.net. I have setup DNS records for both to point to my server. However, only domain.com pings to the correct IP address. domain.net is pointing to a different IP address. Possibly the old server it was pointing to. This has now been deleted. Is there possibly any way to correct this without having to submit a ticket to VPS.net?

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• how to disable local logins to a mac snow leopard machine?

  - by Wang

  I have a maintenance script that needs to run uninterrupted, so I'd like some way to disable local user logins. Right now, the solution is to send SIGSTP to the loginwindow process, which is suboptimal for several reasons. The most important of them is that the observed behavior is a login prompt that appears to accept the user's credentials but then hangs on a blank desktop before the menu bar or dock or desktop icons appear. This has led to users "fixing" the problem by rebooting the machine. Is there a better way to disable local logins? We currently use iHook, so if there's any way to abort a login from within the login hook, that would integrate nicely with our current setup. Unfortunately, Apple doesn't seem to have documented exactly what would cause Mac OS to abort the login.

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• Providing a public Web-Hosting service on MS Windows - advice and resources

  - by crgnz

  Are there any resources offering advice on how to setup a microsoft based web-hosting service? I currently offer LAMP hosting with cPanel, but there is some demand for IIS & SQL Server. As far as I can tell MS Windows Web Server 2008 R2 edition allows unlimited IIS connections. And a per-processor license for MS SQL Server Web Edition 2008 also permits unlimited connections. Where I am falling down is that I can't figure out how to get "unlimited" Active Directory users. I can't use 2008R2 Web Server edition for AD, so I will need the 2008R2 standard edition, I think. Does Microsoft have a provision for using AD in an ISP scenario? I am looking at using the cPanel Enkompas system to manage the Windows software, and Enkompas requires AD for user authentication. Any advice would be greatly appreciated!

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• MaaS minimum requirements with juju-jitsu?

  - by Christopher Shen Mu Long

  I've browsed through so many different sites and found so much contradictory information. As I am getting tired of this and do belive this question affects many other users, so I would like to collect the "once and for all times" answer. Unfortunately, the documentation on MaaS and Juju is ... well, not the best, sorry to say that. What are the minimum system requirements for setting up a MaaS cluster, which is going to be orchestrated with juju-jitsu? Do they need to have the exact system specifications or can I just combine different hardware? What are the minimum requirements for the master machine? E.g. "You need at least 8GB of RAM, a dual core CPU with at least 3.0 GHz." How many machines to I need to deploy MaaS on? I've read six machines, nine machines, and so on. I clearly want to know: "You need one for the Master and e.g. five nodes." Do I need to attach as many NICs (network interface cards) to my master machine as there are nodes, or can I simply attach two NICs and a switch? One NIC for connecting to the internet, one for handling the MaaS tasks, connected to a switch, which connects my nodes to the master? Is Juju now ready for local deployment? The last time I experimented with juju and had to reboot my machine, the services orchestrated by juju were gone. This was an issue I also found on the official juju site. Unfortunately, as mentioned above, the documentation is not the best, so I could not find the necessary info on that again. So: Can I use juju on a local environment or will a reboot break my setup?

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• Disk / system configuration for log collection / syslog server

  - by Konrads

  I am looking into building a syslog / logging infrastructure and am pondering about some architecture best practices. Essentially, I see that a syslog system needs to support two conflicting workloads: log collection. Potentially massive streams of data need to be written quickly to disks and indexed. log querying. logs will be queried by both fixed fields such as date and source as well as text search. What is the best disk/system setup assuming I'd like to keep it to a single server for now? Should I use SSDs or ramdisk to off-load some processing? some disks in stripe and some in raid5? I am particularly eyeing Graylog2 with ElasticSearch/MongoDB

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• Set up SSL/HTTPS in zend application via .htaccess

  - by davykiash

  I have been battling with .htaccess rules to get my SSL setup working right for the past few days.I get a requested URL not found error whenever I try access any requests that does not do through the index controller. For example this URL would work fine if I enter the it manually https://www.example.com/index.php/auth/register However my application has been built in such a way that the url should be this https://www.example.com/auth/register and that gives the requested URL not found error My other URLs such as https://www.example.com/index/faq https://www.example.com/index/blog https://www.example.com/index/terms work just fine. What rule do I need to write in my htaccess to get the URL https://www.example.com/auth/register working? My htaccess file looks like this RewriteEngine On RewriteCond %{HTTPS} off RewriteRule (.*) https://%{HTTP_HOST}%{REQUEST_URI} [L] RewriteCond %{REQUEST_FILENAME} -s [OR] RewriteCond %{REQUEST_FILENAME} -l [OR] RewriteCond %{REQUEST_FILENAME} -d RewriteRule ^.*$ - [NC,L] RewriteRule ^.*$ index.php [NC,L] I posted an almost similar question in stackoverflow

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• Slow performance over network (Ubuntu)

  - by Filipe Santos

  i did setup this NodeJs TCP Server and tested it with a message flooder. Just to see how the performance of the server is. While the message throughput is great if i run the server and the message flooder on the same computer (ubuntu), the throughput dramaticaly decreases if i start the server on computer1(ubuntu1) and the message flooder on computer2(also ubuntu). Both PC are on the same network. In fact, they are directly connected to each other. I started searching the internet for reasons and i suppose i need to tune TCP on both Ubuntu-pcs but until now i haven't been successfull at all. Has anyone experienced such problems, or could someone help me out? Thanks Here the flooding code: var net=require('net') var client = net.createConnection(5000, "10.0.0.2") client.addListener("connect", function(){ for(var i = 0; i < 1000; i++) { client.write("message "); } })

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• Will BIOS boot mode Ubuntu install be able to boot when firmware "Fast Boot" is "Ultra Fast"?

  - by Pro Backup

  I have an AsRock mainboard with UEFI BIOS P1.50 02/14/2014. The firmware "Fast Boot" option is set to "Fast", Boot Option #1 is set to "AHCI P4: OCZ-VERT...": this is BIOS not UEFI boot. This boot disk has an MBR partitioning scheme (# parted -l | grep Partition\ Table:). Therefore Ubuntu 14.04 is installed in BIOS/CMS (Grub-PC) mode. The Ubuntu boot process ends in a text console (no GUI). There is no external graphics card in use. The stock Ubuntu kernel is replaced with Ubuntu supplied mainline 3.16.0-031600rc6-generic. dmesg outputs lines containing BIOS, like: SMBIOS 2.7 present Calgary: detecting Calgary via BIOS EBDA area Calgary: Unable to locate Rio Grande table in EBDA - bailing! [Firmware Bug]: ACPI: BIOS _OSI(Linux) query ignored BIOS EDD facility v0.16 2004-Jun-25, 0 devices found The ASRock BIOS it selves display this help text for "Ultra Fast - Fast Boot": Ultra Fast mode is only supported by Windows 8 and the VBIOS must support UEFI GOP if you are using an external graphics card. Please notice that Ultra Fast mode will boot so fast that the only way to enter this UEFI Setup Utility is to Clear CMOS or run the Restart to UEFI utility in Windows. Assumptions: I suspect after changing UEFI setting "Fast Boot" to "Ultra Fast" that the machine will no longer boot into Ubuntu's console. I expect when first exchanging "Grub-pc" with "Grub-efi", that the machine will still be able to boot to a grub menu (thus allowing to change the "Fast Boot" setting back to "Fast" without clearing CMOS). Are these two "Fast Boot" assumptions correct, and/or, may I expect Ubuntu 14.04 running mainline kernel 3.16rc6 and Grub-efi to still boot to console after enabling UEFI Ultra Fast Boot?

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• Replicating EFS encrypted files

  - by floyd

  Recently I attempted to configure Microsoft's DFSR on Windows 2008 R2 to replicate a folder which was encrypted with EFS. The setup gave no errors or warnings, but later I read that DFSR does not support EFS in any way. There were also event logs in the DFSR event log indicating an encrypted file was found and wont be replicated. http://technet.microsoft.com/en-us/library/cc773238(v=ws.10).aspx#BKMK_052 My question is, are there any tools that would allow this to occur? Software based preferably.This would be replicating over LAN to destination node for two servers on the same domain.

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• Reverse proxy 502 bad gateway

  - by Brian Graham

  I have setup a subdomain to proxy my plesk panel, but when saving pages I am getting 502 Bad Gateway error instead of a completion message. I am running CentOS 6. Here is my vhost.conf configuration for http://plesk.domain.tld/: RewriteEngine On RewriteCond %{SERVER_PORT} ^80$ RewriteRule $ https://plesk.domain.tld/ [R,L] Here is my vhost_ssl.conf configuration for https://plesk.domain.tld/: SSLProxyEngine On <Location /> ProxyPass https://localhost:8443/ ProxyPassReverse https://localhost:8443/ </Location> I have more than enough (and I have even checked) RAM, CPU and HDD. There are no spikes. As well, the posted information does save, it just errors when trying to show me a "This information has been saved." green/red block. Here is the relevent error from /var/log/nginx/error.log (IP/Host Filtered): 2014/05/29 02:42:41 [error] 8046#0: *402 upstream prematurely closed connection while reading response header from upstream, client: 173.238.XX.XX, server: plesk.domain.tld, request: "POST /smb/web/edit HTTP/1.1", upstream: "https://198.100.XX.XX:7081/smb/web/edit", host: "plesk.domain.tld", referrer: "https://plesk.domain.tld/smb/web/edit"

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• How do I install kivy?

  - by aspasia

  I was trying to install Kivy (by following the instructions here). I downloaded and installed all packages where the installation process went through without giving me any errors. However, when later I enter below command; sudo easy_install kivy It looked like it was going to work but it ends with an error by displaying following lines, which I don't comprehend: Detected compiler is unix /tmp/easy_install-BtOA_u/Kivy-1.8.0/kivy/graphics/texture.c:8:22: fatal error: pyconfig.h: No such file or directory #include "pyconfig.h" ^ compilation terminated. error: Setup script exited with error: command 'x86_64-linux-gnu-gcc' failed with exit status 1 I saw a similar question asked as; Problem with kivy installation. However, this didn't work for me though the question suggests installing libgles-mesa-dev-lts-raring which I did as below; sudo apt-get install libgles-mesa-dev-lts-raring which then gave below; E: Unable to locate package libgles-mesa-dev-lts-raring (sorry for being so specific and perhaps obvious, but I'm in the early stage of learning my way around linux). This user was running Ubuntu 12.04, and most other questions related to this I've seen came from people with a different release from mine, which has led me to believe that that is the reason why the suggestions to those didn't solve my problem. I'm using Ubuntu 13.10

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• Photo Management Software for OS X That Supports Multiple Library Locations

  - by Lance Rushing

  I'm looking at the possibility of changing our photo management software. Thinking about Aperture or Lightroom. And want to know if either supports: Having folders/libraries on separate harddrives/Volumes. Tolerates having network folders occasionally connected Snappy interface A solid enough piece of software as not to crash or behave weirdly. [ so the wife doesn't get stuck and have to call me ;) ] Background The wife is photographer and I'm the computer programmer. Our current setup is Picasa, with a "Recent/Working" folder on the local iMac harddrive, and "Archive" folders on NFS mounted Linux Server, Raid 5, for redundant and extra storage capacity. (the Linux server also syncs with Amazon's EC2) Picasa is doing OK, but I get annoyed when it doesn't do behave properly. Usually around issues when the Linux disk isn't mounted. And overall, I wish Picasa seemed a little more polished and snappier. Thanks, Lance

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• Connection to mysql server in SYN_SENT

  - by Sunil

  We are facing a strange problem from last few days between our application server and database server(Mysql): connection to database server from application server hangs in SYN_SENT state and after that we are not able to make any connection to database server on mysql port(3306). When we checked the netstat output on database server its in SYN_RECV state. What I can figure out is mysql server is receiving the SYN request and responding also and its not reaching to the client hence SYN_RECV at server side and SYN_SENT at client side. I think SYN_SENT state should go after some time and because of this other db connection attempts to same server should not hang. Does anybody have any idea how can we resolve this issue? Out setup details : Application server: RHEL 5.4, kernel-release = 2.6.18-164.el5, x86_64 Database server: Mysql Version : 5.1.49 RHEL 5.4, kernel-release = 2.6.18-164.el5, x86_64

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