Existing connexion on Apache and mod_proxy_balancer don't fail over second JBoss node

Posted by Jean-Rémy Revy on Server Fault See other posts from Server Fault or by Jean-Rémy Revy
Published on 2012-09-24T12:00:53Z Indexed on 2012/11/01 11:03 UTC
Read the original article Hit count: 514

Filed under:

apache2

|

load-balancing

|

jboss

|

mod-proxy-ajp

|

mod-proxybalance

I have a Jboss farm, load balanced by Apache HTTP + mod_proxy_balancer and mod_proxy_ajp, with the following configuration :

<VirtualHost *:80>

    ServerName web-gui-acceptance.myorg.com
    ServerAlias web-gui-acceptance


    ProxyRequests Off
    ProxyPass /web-gui balancer://jbosscluster/web-gui stickysession=JSESSIONID nofailover=On
    ProxyPassReverse /web-gui http://srvlnx01.myorg.com:8080/web-gui
    ProxyPassReverse /web-gui http://srvlnx02.myorg.com:8080/web-gui

    <Proxy *>
      AuthType Kerberos
      [...]
    </Proxy>

    <Proxy balancer://jbosscluster>
        BalancerMember ajp://srvlnx01.myorg.com:8009 route=SRVLNX01_node1
        BalancerMember ajp://srvlnx01.myorg.com:8009 route=SRVLNX02_node1
        ProxySet lbmethod=byrequests
    </Proxy>

</VirtualHost>

When the first JBoss node fail (the hosting VM is down), my existing connexions don't fail over the second node ... the fist route is keeped (in table / .shm ?) and that provide me 503 errors.

Can someone tell me what I missed ?

© Server Fault or respective owner

Related posts about apache2

apache2: Could not open configuration file /etc/apache2/apache2.conf: Permission denied

as seen on Ask Ubuntu - Search for 'Ask Ubuntu'
I recently upgraded Ubuntu to the latest LTS edition on my work laptop, which I use as a LAMP development platform. The upgrade was from 12.4 to 14.4. Now I'm having trouble getting apache up and running again. Here is the output from an attempt: antonc@antonc-laptop:/etc/apache2$ sudo service apache2… >>> More
Apache segfault glibc segfault

as seen on Server Fault - Search for 'Server Fault'
I keep getting (about every 5-6 hours) this segfault in apache: [Tue Jun 26 12:43:10 2012] [notice] child pid 26810 exit signal Aborted (6) *** glibc detected *** /usr/sbin/apache2: free(): invalid pointer: 0xb68c2628 *** ======= Backtrace: ========= /lib/i386-linux-gnu/libc.so.6(+0x6ff22)[0xb75aef22] /lib/i386-linux-gnu/libc… >>> More
Localhost not working after installing PHP on Mountain Lion

as seen on Server Fault - Search for 'Server Fault'
I've installed php using brew install php54 --with-mysql, I've set up all the path correctly. which php will give me /usr/local/bin/php php -v will give me PHP 5.4.8 (cli) (built: Nov 20 2012 09:29:31) php --ini will give me: Configuration File (php.ini) Path: /usr/local/etc/php/5.4 Loaded Configuration… >>> More
Apache 2 Virtual Hosts no working on OSX 10.6

as seen on Server Fault - Search for 'Server Fault'
This is my first MacBook and I'm trying to get virtual hosts up and running so as it's going to be my dev machine. I've got apache/php/mysql running fine, the problem is that what ever address I go to I just get one of the virtual hosts I've setup. I can't even get to the root site anymore. I had… >>> More
apache2 error Could not open configuration file /etc/apache2/conf.d/: No such file or directory

as seen on Ask Ubuntu - Search for 'Ask Ubuntu'
I have just upgraded my Ubuntu 13.10 and apache2 is not working. When I try to start the apache2 server it is printing following errors: * Starting web server apache2 * The apache2 configtest failed. Output of config test was: apache2: Syntax error on line 263 of /etc/apache2/apache2.conf: Could… >>> More

Related posts about load-balancing

Failover or load balancing configuration on Apple Xserve and Mac OS X Server Snow Leopard (10.6)

as seen on Server Fault - Search for 'Server Fault'
I'm currently installing a number of Apple Xserve boxes running Mac OS X Server (10.6). After poking and prodding for a while I can't find any obvious way, or documentation telling me how, to set up the 2 ethernet ports in a failover or load-balancing configuration. There seems to be an obvious… >>> More
Conceptually how does load-balancing on the EJB tier work in Glassfish/any ejb container

as seen on Stack Overflow - Search for 'Stack Overflow'
I am wondering conceptually how load-balancing works on the EJB-level (not web session replication) with Java EE containers like Glassfish. From what I have gleaned your remote interface is a proxy that delegates your call to one of many servers you may have in an environment. If things fail are… >>> More
Do i need a dedicated server for load balancing?

as seen on Server Fault - Search for 'Server Fault'
I'm completely new to the concept of load balancing so i hope this question isn't a "stupid question" because i've been searching around and im having a hard time understanding this. So to my understanding, in order to load balance, i need a separate machine with an ip address i can direct all traffic… >>> More
Load balancing and sessions

as seen on Stack Overflow - Search for 'Stack Overflow'
Hi there, What is the better approach for load balancing on web servers? My services run in .NET and Mono, so they could be hosted on IIS or Apache2, and the will have to provide SSL connection. I've read two main approaches, store the state in a common server and use sticky sessions, there is any… >>> More
Loadbalancing outbound traffic while using openbgpd on freebsd

as seen on Server Fault - Search for 'Server Fault'
Hi, I am using openbgpd in freeBSD with 2 ISP connections. I have my own AS number and a /22 network. Currently I am advertising entire /22 to both networks. Inbound traffic comes in But my outbound traffic goes via a single link. I would like to either distribute my outbound traffic via both links… >>> More