On Thu, 2007-06-14 at 14:12 -0600, Serge Dubrouski wrote: > On 6/14/07, Tom Haddon <tom@xxxxxxxxxxxxxxxxx> wrote: > > On Thu, 2007-06-14 at 13:02 -0600, Serge Dubrouski wrote: > > > I wouldn't rely on balancer_manager for a such monitoring because I've > > > seen situations when it reported "Ok" status for workers that were > > > down. > > > > Is that a known bug? > > I haven't seen any bugs reported for this in Bugzilla. I've been able to replicate myself and have reported it as: http://issues.apache.org/bugzilla/show_bug.cgi?id=42667 It's not quite the same issue but amounts to the same thing - in my case I can see that the worker says it's been disabled, but I can verify that traffic is being passed to my application server... Thanks, Tom > > > > > > > > > As alternative method you can use sniffing Apache error_log file for > > > the messages about disabled workers. You can OSSEC for that for > > > example. > > > > Is there any way of getting the current status (which workers are in and > > out) reliably, as this would surely rely on a good known state and then > > playing things forward from there? I've been seeing some messages in the > > error logs about workers being disabled, but when I test them they are > > plainly working fine, and there's no message about the workers being > > brought back into the loop. > > Not that I know about. I monitor all downstream servers that I have > configured in load balancer and load balancer itself using Nagios. It > would be good to be able to make sure that Apache uses all those > downstream server but I don't a simple way to do that. One way could > be monitoring for incoming traffic/growing log files on those servers. > > > > > Thanks, Tom > > > > > > > > On 6/14/07, Tom Haddon <tom@xxxxxxxxxxxxxxxxx> wrote: > > > > Hi Folks, > > > > > > > > We've recently set up mod_proxy_balancer as a replacement for Pound, and > > > > I'm trying to work out the best way to monitor the load balancer to > > > > determine which servers are "in the loop" and which servers are "out of > > > > the loop". I'd ideally like to tie this in to Nagios so that I can get > > > > alerts if any of my servers gets taken out of the loop. > > > > > > > > At the moment I have the balancer-manager admin interface enabled for > > > > local connections only (i.e. from 127.0.0.1 on my apache server) and > > > > password protected, and have implemented something like the following > > > > for my Nagios check: > > > > > > > > command[check_beta_lb_1]=/usr/lib/nagios/plugins/check_http -H localhost > > > > -u /balancer-manager -a betaload:--password-- -s > > > > 'http://--dest-ip--:--dest-port--</a></td><td></td><td></td><td>1</td><td>Ok' > > > > > > > > This seems like a terrible hack, and I'm wondering if there's a better > > > > way to do this. > > > > > > > > Thanks, Tom > > > > -- > > > > Tom Haddon <tom@xxxxxxxxxxxxxxxxx> > > > > > > > > > > > > --------------------------------------------------------------------- > > > > The official User-To-User support forum of the Apache HTTP Server Project. > > > > See <URL:http://httpd.apache.org/userslist.html> for more info. > > > > To unsubscribe, e-mail: users-unsubscribe@xxxxxxxxxxxxxxxx > > > > " from the digest: users-digest-unsubscribe@xxxxxxxxxxxxxxxx > > > > For additional commands, e-mail: users-help@xxxxxxxxxxxxxxxx > > > > > > > > > > > > > > --------------------------------------------------------------------- > > > The official User-To-User support forum of the Apache HTTP Server Project. > > > See <URL:http://httpd.apache.org/userslist.html> for more info. > > > To unsubscribe, e-mail: users-unsubscribe@xxxxxxxxxxxxxxxx > > > " from the digest: users-digest-unsubscribe@xxxxxxxxxxxxxxxx > > > For additional commands, e-mail: users-help@xxxxxxxxxxxxxxxx > > > > -- > > > > > > ---------------------------------- > > Tom Haddon > > mailto:tom@xxxxxxxxxxxxxxxxx > > m +1.415.871.4180 > > www.greenleaftech.net > > > > > > --------------------------------------------------------------------- > > The official User-To-User support forum of the Apache HTTP Server Project. > > See <URL:http://httpd.apache.org/userslist.html> for more info. > > To unsubscribe, e-mail: users-unsubscribe@xxxxxxxxxxxxxxxx > > " from the digest: users-digest-unsubscribe@xxxxxxxxxxxxxxxx > > For additional commands, e-mail: users-help@xxxxxxxxxxxxxxxx > > > > > > --------------------------------------------------------------------- > The official User-To-User support forum of the Apache HTTP Server Project. > See <URL:http://httpd.apache.org/userslist.html> for more info. > To unsubscribe, e-mail: users-unsubscribe@xxxxxxxxxxxxxxxx > " from the digest: users-digest-unsubscribe@xxxxxxxxxxxxxxxx > For additional commands, e-mail: users-help@xxxxxxxxxxxxxxxx -- ---------------------------------- Tom Haddon mailto:tom@xxxxxxxxxxxxxxxxx m +1.415.871.4180 www.greenleaftech.net --------------------------------------------------------------------- The official User-To-User support forum of the Apache HTTP Server Project. See <URL:http://httpd.apache.org/userslist.html> for more info. To unsubscribe, e-mail: users-unsubscribe@xxxxxxxxxxxxxxxx " from the digest: users-digest-unsubscribe@xxxxxxxxxxxxxxxx For additional commands, e-mail: users-help@xxxxxxxxxxxxxxxx
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