[Building Sakai] Loadbalancing problem, ajp connector, all workers are in error state

[Earle Nietzel]

Hi Jehan,

Depending on your network configuration (i.e. apache http in DMZ, and
tomcat in protected network).

You will need to turn keep alive on so the ajp connections don't go
stale. Many firewalls will drop connections after a certain time
limit.

If this doesn't work, you could try turning CPING on as that will
first validate the connection before sending any data.

Earle

On Thu, May 17, 2012 at 2:23 AM, Jehan Badshah <jehan.badshah at nu.edu.pk> wrote:
> Dear All
>
> We have done loadbalancing using ajp connector with one apache2 (access
> sever) and 3 tomcats. some time users/clients are getting error message
> "Server temporally un-available". In apache access log I am getting message
> "all workers are in error state"
>
>  what is problem in my following configuration?
> please suggest.
>
>
> //httpd.conf
>
> ProxyPass / balancer://myCluster/ stickysession=JSESSIONID|jsessionid
> nofailover=On timeout=60
> <Proxy balancer://myCluster>
>     BalancerMember ajp://192.168.1.2:8009 route=sys02
>     BalancerMember ajp://192.168.1.3:8009 route=sys03
>     BalancerMember ajp://192.168.1.4:8009 route=sys04
> </Proxy>
>
> Some one can  past their configuration?
>
>
> Regards
> ----------------------------------------------------
> Jehan Badshah | Sr. Software Engineer & Team Lead
> Department of Research & Development
> National University of Computer and Emerging Sciences
> A.K. Brohi Road, H-11/4, Islamabad
> UAN: +92 (0)51 - 111 128 128 ext 344
>
>
>
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