Re: BalancerMember returns 500 internal server error before failover

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I did see the ping parameter for the Balancemember element could be used to test the connection - should we be using this? I'm worried about more load on the tomcat instances though using this.

On Wed, Apr 20, 2016 at 3:07 PM, Wayne W <waynemailinglists@xxxxxxxxx> wrote:
Hi Jim,

I did't know that - is there any documentation around this? what should I search for?

So are you saying what I'm experiencing is normal?

On Wed, Apr 20, 2016 at 2:05 PM, Jim Jagielski <jim@xxxxxxxxxxx> wrote:
Upgrading to 2.4.20 allow you to disable the one node dynamically
on the httpd side and then bring down the node.
> On Apr 20, 2016, at 8:10 AM, Wayne W <waynemailinglists@xxxxxxxxx> wrote:
>
> Hi,
>
> I'm seeing that with Apache 2.4.12 on Solaris when setup with mod_proxy to 2 tomcat instances when we bring down 1 node for maintenance the first client to try and access that node gets a Internal Server Error. Any requests after that (and for other sessions) are balanced correctly onto the other node.
>
> Is this normal?
> Is there a way for it to just balance over to the other node without returning the error?
>
> My conf:
> <VirtualHost *:80>
>  ServerName
> somedomain.com
>
>  ProxyPass /share
> http://127.0.0.1:8181/share
>
>
>  ProxyPass / balancer://cluster/ stickysession=JSESSIONID nofailover=Off
>
>  # define the balancer, with http and/or ajp connections
>  <Proxy balancer://cluster/>
>       Order allow,deny
>       Allow from all
>       BalancerMember ajp://
> 127.0.0.1:8010
>  route=g1
>       BalancerMember ajp://
> 127.0.0.1:8011
>  route=g2
>  </Proxy>
> </VirtualHost>
>
>
> I see in the apache logs the following:
>
> Wed Apr 20 11:04:11.739700 2016] [proxy_ajp:error] [pid 58313] [client 10.12.32.251:56869] AH00992: ajp_read_header: ajp_ilink_receive failed, referer: https://example.com
> [Wed Apr 20 11:04:11.739713 2016] [proxy_ajp:error] [pid 58313] (120006)APR does not understand this error code: [client 10.12.32.251:56869] AH00878: read response failed from 127.0.0.1:8010 (127.0.0.1), referer: http://example.com
> [


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