Re: Monitoring Tomcat availability in a load balanced capacity

2008-11-13 Thread Rainer Jung
Adam Gordon schrieb: > The 'wget' command allows the user to play with Cookies so our next step > is to see if we can specify a fake JSESSIONID in cookie form to see if > we can dictate to which server Apache will send us. As previously > mentioned, we cannot simply put this on the URL as a parame

Re: Monitoring Tomcat availability in a load balanced capacity

2008-11-13 Thread André Warnier
Not to interfere with Dave, but just as another halfway idea : You could define 2 other workers in the Jk config, which are not load-balanced, each going to one Tomcat. You would still not be testing the exact same path as the clients, but would be checking Apache, mod_jk itself and the Tomcats.

Re: Monitoring Tomcat availability in a load balanced capacity

2008-11-13 Thread David Rees
On Thu, Nov 13, 2008 at 2:35 PM, Adam Gordon <[EMAIL PROTECTED]> wrote: > As previously mentioned, we > cannot simply put this on the URL as a parameter because we are using sticky > sessions. Why not? It works just fine in my tests. -Dave

Re: Monitoring Tomcat availability in a load balanced capacity

2008-11-13 Thread Adam Gordon
We've discovered a problem with simply adding another (HTTP) Connector in that by allowing a different form of connection to our web app and using this connector for our monitoring, we aren't testing the path that a user would take, which is through the load balancer and mod JK. One of the iss

Re: Monitoring Tomcat availability in a load balanced capacity

2008-11-13 Thread Adam Gordon
André, I only think it's overkill because we're currently not even using mod-proxy so adding this module for the sole purpose of being able to monitor our tomcat servers is what I consider to be overkill. Additionally, with running a proxy comes tons of security enforcement as you need to pr

Re: Monitoring Tomcat availability in a load balanced capacity

2008-11-12 Thread Robert Koberg
Ooops, sorry. I meant this to go to someone else... On Nov 12, 2008, at 5:06 PM, Robert Koberg wrote: You mentioned you just upgraded your MS SQL. Is it possible that the default encoding changed? It should be using UTF-8. Can you check that? On Nov 12, 2008, at 4:48 PM, André Warnier wr

Re: Monitoring Tomcat availability in a load balanced capacity

2008-11-12 Thread David Rees
On Wed, Nov 12, 2008 at 1:15 PM, Adam Gordon <[EMAIL PROTECTED]> wrote: > See my reply to Hassan. I think setting up a proxy would be overkill, and > besides, when running Tomcat in a load-balanced capacity w/ sticky sessions > using mod JK, while you can connect directly to the port on which Tomc

Re: Monitoring Tomcat availability in a load balanced capacity

2008-11-12 Thread Robert Koberg
You mentioned you just upgraded your MS SQL. Is it possible that the default encoding changed? It should be using UTF-8. Can you check that? On Nov 12, 2008, at 4:48 PM, André Warnier wrote: Adam Gordon wrote: See my reply to Hassan. I think setting up a proxy would be overkill, and besid

Re: Monitoring Tomcat availability in a load balanced capacity

2008-11-12 Thread André Warnier
Adam Gordon wrote: See my reply to Hassan. I think setting up a proxy would be overkill, and besides, when running Tomcat in a load-balanced capacity w/ sticky sessions using mod JK, while you can connect directly to the port on which Tomcat is listening for mod JK requests, unless you speak m

Re: Monitoring Tomcat availability in a load balanced capacity

2008-11-12 Thread Adam Gordon
See my reply to Hassan. I think setting up a proxy would be overkill, and besides, when running Tomcat in a load-balanced capacity w/ sticky sessions using mod JK, while you can connect directly to the port on which Tomcat is listening for mod JK requests, unless you speak mod JK, it doesn't d

Re: Monitoring Tomcat availability in a load balanced capacity

2008-11-12 Thread Adam Gordon
Hassan- I apologize if I wasn't clear. We are already running Tomcat in a load-balanced capacity with sticky sessions which means the jvmRoute is already set and configured correctly. What we are looking to do is ensure that the actual Tomcat instance isn't a zombie, rather, that it can sti

Re: Monitoring Tomcat availability in a load balanced capacity

2008-11-12 Thread David Rees
On Wed, Nov 12, 2008 at 9:42 AM, Adam Gordon <[EMAIL PROTECTED]> wrote: > Since we're connecting to Tomcat via an Apache load-balancer, we don't know > of a way to force the load-balancer to go to a certain Tomcat instance. > Additionally, we don't know how to speak mod j/k so we can't fake a dire

Re: Monitoring Tomcat availability in a load balanced capacity

2008-11-12 Thread André Warnier
Adam Gordon wrote: We're running two Tomcat (5.5.16) instances in a load-balanced capacity behind an Apache server (2.0.55 w/ mod j/k 1.2.14). We'd like to set up some sort of monitoring that would allow us to not just check to see if the Tomcat Java processes are still running (that's easy)

Re: Monitoring Tomcat availability in a load balanced capacity

2008-11-12 Thread Hassan Schroeder
On Wed, Nov 12, 2008 at 9:42 AM, Adam Gordon <[EMAIL PROTECTED]> wrote: > We're running two Tomcat (5.5.16) instances in a load-balanced capacity > behind an Apache server (2.0.55 w/ mod j/k 1.2.14). > > We'd like to set up some sort of monitoring that would allow us to not just > check to see if t

Re: Monitoring Tomcat availability in a load balanced capacity

2008-11-12 Thread Adam Gordon
Can you please include a link? Google is not helping... Thanks. Alberto Jesus La Rosa Agramonte wrote: application manager, is not free, but with the trial licence you can work with all the functionalities. bye 2008/11/13 Adam Gordon <[EMAIL PROTECTED]>: We're running two Tomcat (5.5.16)

Re: Monitoring Tomcat availability in a load balanced capacity

2008-11-12 Thread Alberto Jesus La Rosa Agramonte
application manager, is not free, but with the trial licence you can work with all the functionalities. bye 2008/11/13 Adam Gordon <[EMAIL PROTECTED]>: > We're running two Tomcat (5.5.16) instances in a load-balanced capacity > behind an Apache server (2.0.55 w/ mod j/k 1.2.14). > > We'd like to

Monitoring Tomcat availability in a load balanced capacity

2008-11-12 Thread Adam Gordon
We're running two Tomcat (5.5.16) instances in a load-balanced capacity behind an Apache server (2.0.55 w/ mod j/k 1.2.14). We'd like to set up some sort of monitoring that would allow us to not just check to see if the Tomcat Java processes are still running (that's easy) but to actually conn