The question of automatic restart Tomcat
Good afternoon. I apologise if this theme described in documentation Tomcat, I badly understand English language. Whether you could not answer me is in tomcat 6.0.X Service which automatically would start Tomcat, at end of its work as a result of an error or failure in software work. If such service I will is it is very grateful if you send me the reference to the documentation on adjustment of this service, or simply tell as it is called. Copy Good afternoon. I apologize if this topic is described in the documentation Tomcat, I do not understand English. Could you answer me is there in tomcat 6.0.X service that would automatically starts Tomcat, at the conclusion of his work as a result of errors or malfunction of the software. If this service is going to be very grateful if you send me a link to the documentation on configuring this service, or just tell it s called. -- С уважением, Mirgorodskiy mailto:eugene.mirgorods...@extreme-idea.com - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: The question of automatic restart Tomcat
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Eugene,
On 4/13/2010 7:18 AM, Mirgorodskiy Eugene wrote:
I apologise if this theme described in documentation Tomcat, I badly
understand English language.
Whether you could not answer me is in tomcat 6.0.X Service which
automatically would start Tomcat, at end of its work as a result of
an error or failure in software work.
Tomcat does not provide this service. There may be such services
available elsewhere, but I am unaware of them.
You may be able to create your own, something like this:
#!/bin/sh
CATALINA_HOME=/opt/tomcat6
CHECK_INTERVAL=30s
RESTART_INTERVAL=10s
while true ; do
# Start TC in background
${CATALINA_HOME}/bin/catalina.sh start
# Repeatedly check stdout for errors
while true ; do
sleep ${CHECK_INTERVAL}
grep OutOfMemoryError ${CATALINA_HOME}/logs/catalina.out
result = $?
if [ 0 == ${result} ] ; then
break
fi
done
# Stop TC
${CATALINA_HOME}/bin/catalina.sh stop
sleep ${RESTART_INTERVAL}
done
This will run Tomcat forever and restart it if any OutOfMemoryError
messages are emitted to logs/catalina.out.
You can certainly customize this to meet whatever other needs you may
have. You can even have your webapp dump something into stdout (or some
other file) and check that, too.
Hope that helps,
- -chris
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Re: The question of automatic restart Tomcat
On 4/13/2010 7:18 AM, Mirgorodskiy Eugene wrote: Good afternoon. I apologise if this theme described in documentation Tomcat, I badly understand English language. Whether you could not answer me is in tomcat 6.0.X Service which automatically would start Tomcat, at end of its work as a result of an error or failure in software work. If such service I will is it is very grateful if you send me the reference to the documentation on adjustment of this service, or simply tell as it is called. Copy Good afternoon. I apologize if this topic is described in the documentation Tomcat, I do not understand English. Could you answer me is there in tomcat 6.0.X service that would automatically starts Tomcat, at the conclusion of his work as a result of errors or malfunction of the software. If this service is going to be very grateful if you send me a link to the documentation on configuring this service, or just tell it s called. In windows, you can set services to automatically restart if they fail. That is done from the services manager in Administrative Tools. - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: The question of automatic restart Tomcat
We use automatic restarts on OutOfMemory errors and it works fantastically. I
don't do it the way described here, though. I use the JVM's
-XX:OnOutOfMemoryError option. I add the following to CATALINA_OPTS:
-XX:OnOutOfMemoryError=/usr/sbin/restart_tcserver
...which restarts tcServer whenever an OOME occurs. Unfortunately, it doesn't
produce a stacktrace (it calls your script instead). But that's okay in my
case. I just want to make sure the server gets restarted.
We had one of these a while back, so I know it works fine (the restart script
also sends me an email--including top output--letting me know what happened).
Thanks!
Jon Brisbin
Portal Webmaster
NPC International, Inc.
On Apr 13, 2010, at 11:37 AM, Christopher Schultz wrote:
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Hash: SHA1
Eugene,
On 4/13/2010 7:18 AM, Mirgorodskiy Eugene wrote:
I apologise if this theme described in documentation Tomcat, I badly
understand English language.
Whether you could not answer me is in tomcat 6.0.X Service which
automatically would start Tomcat, at end of its work as a result of
an error or failure in software work.
Tomcat does not provide this service. There may be such services
available elsewhere, but I am unaware of them.
You may be able to create your own, something like this:
#!/bin/sh
CATALINA_HOME=/opt/tomcat6
CHECK_INTERVAL=30s
RESTART_INTERVAL=10s
while true ; do
# Start TC in background
${CATALINA_HOME}/bin/catalina.sh start
# Repeatedly check stdout for errors
while true ; do
sleep ${CHECK_INTERVAL}
grep OutOfMemoryError ${CATALINA_HOME}/logs/catalina.out
result = $?
if [ 0 == ${result} ] ; then
break
fi
done
# Stop TC
${CATALINA_HOME}/bin/catalina.sh stop
sleep ${RESTART_INTERVAL}
done
This will run Tomcat forever and restart it if any OutOfMemoryError
messages are emitted to logs/catalina.out.
You can certainly customize this to meet whatever other needs you may
have. You can even have your webapp dump something into stdout (or some
other file) and check that, too.
Hope that helps,
- -chris
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=/1/r
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Re: The question of automatic restart Tomcat
On Tue, Apr 13, 2010 at 7:46 PM, Jon Brisbin jon.bris...@npcinternational.com wrote: We use automatic restarts on OutOfMemory errors and it works fantastically. I don't do it the way described here, though. I use the JVM's -XX:OnOutOfMemoryError option. I add the following to CATALINA_OPTS: -XX:OnOutOfMemoryError=/usr/sbin/restart_tcserver I'm not aware of that option within my standard sun jdk 1.6.x - what Java-version are you running offering this really useful feature? Cheers Gregor -- just because you're paranoid, don't mean they're not after you... gpgp-fp: 79A84FA526807026795E4209D3B3FE028B3170B2 gpgp-key available @ http://pgpkeys.pca.dfn.de:11371 @ http://pgp.mit.edu:11371/ skype:rc46fi - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: The question of automatic restart Tomcat
Gregor, --- On Tue, 4/13/10 at 1:19 PM, Gregor Schneider rc4...@googlemail.com wrote: -XX:OnOutOfMemoryError=/usr/sbin/restart_tcserver I'm not aware of that option within my standard sun jdk 1.6.x - what Java-version are you running offering this really useful feature? I wasn't aware of it either. From http://java.sun.com/javase/technologies/hotspot/vmoptions.jsp -XX:OnOutOfMemoryError=cmd args;cmd args Run user-defined commands when an OutOfMemoryError is first thrown. (Introduced in 1.4.2 update 12, 6) - Bob - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: The question of automatic restart Tomcat
This looks to be a feature of Java HotSpot, and available since v1.4: http://java.sun.com/javase/technologies/hotspot/vmoptions.jsp On Tue, Apr 13, 2010 at 4:19 PM, Gregor Schneider rc4...@googlemail.comwrote: On Tue, Apr 13, 2010 at 7:46 PM, Jon Brisbin jon.bris...@npcinternational.com wrote: We use automatic restarts on OutOfMemory errors and it works fantastically. I don't do it the way described here, though. I use the JVM's -XX:OnOutOfMemoryError option. I add the following to CATALINA_OPTS: -XX:OnOutOfMemoryError=/usr/sbin/restart_tcserver I'm not aware of that option within my standard sun jdk 1.6.x - what Java-version are you running offering this really useful feature? Cheers Gregor -- Hell hath no limits, nor is circumscrib'd In one self-place; but where we are is hell, And where hell is, there must we ever be --Christopher Marlowe, 'Doctor Faustus' (v, 121-24)
Re: The question of automatic restart Tomcat
comments below... On Apr 13, 2010, at 3:40 PM, Bob Hall wrote: Gregor, --- On Tue, 4/13/10 at 1:19 PM, Gregor Schneider rc4...@googlemail.com wrote: -XX:OnOutOfMemoryError=/usr/sbin/restart_tcserver I'm not aware of that option within my standard sun jdk 1.6.x - what Java-version are you running offering this really useful feature? I wasn't aware of it either. From http://java.sun.com/javase/technologies/hotspot/vmoptions.jsp -XX:OnOutOfMemoryError=cmd args;cmd args Run user-defined commands when an OutOfMemoryError is first thrown. (Introduced in 1.4.2 update 12, 6) There's also: -XX:OnError=cmd args;cmd args Run user-defined commands on fatal error. (Introduced in 1.4.2 update 9.) Jon Brisbin Portal Webmaster NPC International, Inc. - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
