Re: Help with Tomcat Automatic Application Deployment

[Mark Thomas]

On 17/05/18 17:03, sri devops wrote:
> Sure i will work in fixing the memory leak and i have another QQ.
> 
> Now that I set autoDeploy=false in order to have more control on my tomcat. I
> stopped Tomcat, deploy war file and started tomcat and tomcat is extracting
> the war just fine without having deployOnStartup attribute stated anywhere. As
> i grep for "deployOnStartup" value and couldn't find anywhere in my
> configuration, and deployments on start-up is working just fine.
> 
> 
>- Do i need to specifically set deployOnStartup=true,  For happening
>deployments on Tomcat startup ? Or is deployOnStartup=true (by default in
>tomcat) ?
>- Also if autoDeploy is set to false, are there any other unknown
>impacts that might happen which needs to be considered ?

The configuration docs for Host can answer those questions.

Mark

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Re: Help with Tomcat Automatic Application Deployment

[sri devops]

Sure i will work in fixing the memory leak and i have another QQ.

Now that I set autoDeploy=false in order to have more control on my tomcat. I
stopped Tomcat, deploy war file and started tomcat and tomcat is extracting
the war just fine without having deployOnStartup attribute stated anywhere. As
i grep for "deployOnStartup" value and couldn't find anywhere in my
configuration, and deployments on start-up is working just fine.


   - Do i need to specifically set deployOnStartup=true,  For happening
   deployments on Tomcat startup ? Or is deployOnStartup=true (by default in
   tomcat) ?
   - Also if autoDeploy is set to false, are there any other unknown
   impacts that might happen which needs to be considered ?



Thanks,
Srinath

On Thu, May 17, 2018 at 10:48 AM Mark Thomas  wrote:

> On 16 May 2018 23:01:14 BST, sri devops  wrote:
> >Thanks Mark, your answer is very helpful. I tried many scenarios using
> >your
> >inputs.
> >
> >I want Tomcat to NOT perform reload but it needs to perform a redeploy
> >when
> >context.xml is changed. So i set autoDeploy=true and commented out
> >below
> >section in context.xml to server my purpose.
> >
> >WEB-INF/web.xml
> >${catalina.base}/conf/web.xml
> >
> >Now what i noticed is, while tomcat and application are in running
> >state,
> >if i removed /opt/apache-tomcat-8.5.23/webapps/cp directory, Tomcat is
> >trying to redeploy which is good but it hung at below error
> >
> >*SEVERE: The web application [cp] created a ThreadLocal with key of
> >type
> >[java.lang.ThreadLocal] (value [java.lang.ThreadLocal@5640c1bb) and a
> >value
> >of type [foo.context.ServiceToken] (value [Unknow] ) but failed to
> >remove
> >it when the web application was stopped. Threads are going to be
> >renewed
> >over time to try and avoid a probable memory leak.*
> >
> >In order to get rid of this error, i manually need to stop / forcefully
> >kill PID for the tomcat and then start tomcat to perform a redeploy
> >---> So
> >here there's a human interaction of manually stopping tomcat and
> >starting
> >it (not serving the purpose of redeploy). Do you have any thoughts or
> >suggestions in this scenarios ?
>
> Fix the memory leak in your web application.
>
> Mark
>
>
> >
> >Thanks,
> >Srinath.
> >
> >
> >On Fri, May 11, 2018 at 11:44 AM Mark Thomas  wrote:
> >
> >> On 08/05/18 19:07, sri devops wrote:
> >> >  Hello Team,
> >> >
> >> > Currently I have apache-tomcat-8.5.23 installed and running on
> >> > RHEL7.x86_64. I have a war deployed and application is running
> >under
> >> > tomcat. While application is running, if i make any manual changes
> >to
> >> some
> >> > config files [ context.xml or server.xml or web.xml] and noticed
> >Tomcat
> >> is
> >> > restarting application even though I haven't called tomcat service
> >start
> >> > script.
> >>
> >> Changes to server.xml do not trigger web application reload or
> >redeploy.
> >> Neither does it trigger a Tomcat restart.
> >>
> >> Changes to web.xml trigger a web application reload because of the
> >> default watched resources (see CATALINA_BASE/conf/context.xml) and
> >> because autoDeploy is true by default.
> >>
> >> Changes to context.xml will trigger a web application redeploy
> >because
> >> autoDeploy is true by default.
> >>
> >>
> >> > My intention is,
> >> > 1) At first when there's initial war deployed and tomcat service
> >start
> >> > script is called, tomcat should extract war and app should work
> >> > 2) Second, While tomcat is in running state and application is
> >running
> >> and
> >> > if i make any manual changes to any tomcat config file, I do not
> >want
> >> > application to auto magically restart.
> >> >
> >> > *my server.xml looks as below*
> >> >
> >> >  >> >unpackWARs="true" autoDeploy="true">
> >> >
> >> >
> >> > I also looked at your docs and researched online, but unclear on
> >these
> >> > parameters what to use when. [ setting autoDeploy=false (or) having
> >> > deployIgnore attribute somewhere ?]
> >>
> >> Set autoDeploy to false.
> >>
> >> Mark
> >>
> >> -
> >> To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org
> >> For additional commands, e-mail: users-h...@tomcat.apache.org
> >>
> >>
>
>
> -
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>
>

Re: Help with Tomcat Automatic Application Deployment

[Mark Thomas]

On 16 May 2018 23:01:14 BST, sri devops  wrote:
>Thanks Mark, your answer is very helpful. I tried many scenarios using
>your
>inputs.
>
>I want Tomcat to NOT perform reload but it needs to perform a redeploy
>when
>context.xml is changed. So i set autoDeploy=true and commented out
>below
>section in context.xml to server my purpose.
>
>WEB-INF/web.xml
>${catalina.base}/conf/web.xml
>
>Now what i noticed is, while tomcat and application are in running
>state,
>if i removed /opt/apache-tomcat-8.5.23/webapps/cp directory, Tomcat is
>trying to redeploy which is good but it hung at below error
>
>*SEVERE: The web application [cp] created a ThreadLocal with key of
>type
>[java.lang.ThreadLocal] (value [java.lang.ThreadLocal@5640c1bb) and a
>value
>of type [foo.context.ServiceToken] (value [Unknow] ) but failed to
>remove
>it when the web application was stopped. Threads are going to be
>renewed
>over time to try and avoid a probable memory leak.*
>
>In order to get rid of this error, i manually need to stop / forcefully
>kill PID for the tomcat and then start tomcat to perform a redeploy
>---> So
>here there's a human interaction of manually stopping tomcat and
>starting
>it (not serving the purpose of redeploy). Do you have any thoughts or
>suggestions in this scenarios ?

Fix the memory leak in your web application.

Mark


>
>Thanks,
>Srinath.
>
>
>On Fri, May 11, 2018 at 11:44 AM Mark Thomas  wrote:
>
>> On 08/05/18 19:07, sri devops wrote:
>> >  Hello Team,
>> >
>> > Currently I have apache-tomcat-8.5.23 installed and running on
>> > RHEL7.x86_64. I have a war deployed and application is running
>under
>> > tomcat. While application is running, if i make any manual changes
>to
>> some
>> > config files [ context.xml or server.xml or web.xml] and noticed
>Tomcat
>> is
>> > restarting application even though I haven't called tomcat service
>start
>> > script.
>>
>> Changes to server.xml do not trigger web application reload or
>redeploy.
>> Neither does it trigger a Tomcat restart.
>>
>> Changes to web.xml trigger a web application reload because of the
>> default watched resources (see CATALINA_BASE/conf/context.xml) and
>> because autoDeploy is true by default.
>>
>> Changes to context.xml will trigger a web application redeploy
>because
>> autoDeploy is true by default.
>>
>>
>> > My intention is,
>> > 1) At first when there's initial war deployed and tomcat service
>start
>> > script is called, tomcat should extract war and app should work
>> > 2) Second, While tomcat is in running state and application is
>running
>> and
>> > if i make any manual changes to any tomcat config file, I do not
>want
>> > application to auto magically restart.
>> >
>> > *my server.xml looks as below*
>> >
>> > > >unpackWARs="true" autoDeploy="true">
>> >
>> >
>> > I also looked at your docs and researched online, but unclear on
>these
>> > parameters what to use when. [ setting autoDeploy=false (or) having
>> > deployIgnore attribute somewhere ?]
>>
>> Set autoDeploy to false.
>>
>> Mark
>>
>> -
>> To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org
>> For additional commands, e-mail: users-h...@tomcat.apache.org
>>
>>


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Re: Help with Tomcat Automatic Application Deployment

[sri devops]

Thanks Mark, your answer is very helpful. I tried many scenarios using your
inputs.

I want Tomcat to NOT perform reload but it needs to perform a redeploy when
context.xml is changed. So i set autoDeploy=true and commented out below
section in context.xml to server my purpose.

WEB-INF/web.xml
${catalina.base}/conf/web.xml

Now what i noticed is, while tomcat and application are in running state,
if i removed /opt/apache-tomcat-8.5.23/webapps/cp directory, Tomcat is
trying to redeploy which is good but it hung at below error

*SEVERE: The web application [cp] created a ThreadLocal with key of type
[java.lang.ThreadLocal] (value [java.lang.ThreadLocal@5640c1bb) and a value
of type [foo.context.ServiceToken] (value [Unknow] ) but failed to remove
it when the web application was stopped. Threads are going to be renewed
over time to try and avoid a probable memory leak.*

In order to get rid of this error, i manually need to stop / forcefully
kill PID for the tomcat and then start tomcat to perform a redeploy ---> So
here there's a human interaction of manually stopping tomcat and starting
it (not serving the purpose of redeploy). Do you have any thoughts or
suggestions in this scenarios ?

Thanks,
Srinath.


On Fri, May 11, 2018 at 11:44 AM Mark Thomas  wrote:

> On 08/05/18 19:07, sri devops wrote:
> >  Hello Team,
> >
> > Currently I have apache-tomcat-8.5.23 installed and running on
> > RHEL7.x86_64. I have a war deployed and application is running under
> > tomcat. While application is running, if i make any manual changes to
> some
> > config files [ context.xml or server.xml or web.xml] and noticed Tomcat
> is
> > restarting application even though I haven't called tomcat service start
> > script.
>
> Changes to server.xml do not trigger web application reload or redeploy.
> Neither does it trigger a Tomcat restart.
>
> Changes to web.xml trigger a web application reload because of the
> default watched resources (see CATALINA_BASE/conf/context.xml) and
> because autoDeploy is true by default.
>
> Changes to context.xml will trigger a web application redeploy because
> autoDeploy is true by default.
>
>
> > My intention is,
> > 1) At first when there's initial war deployed and tomcat service start
> > script is called, tomcat should extract war and app should work
> > 2) Second, While tomcat is in running state and application is running
> and
> > if i make any manual changes to any tomcat config file, I do not want
> > application to auto magically restart.
> >
> > *my server.xml looks as below*
> >
> >  >unpackWARs="true" autoDeploy="true">
> >
> >
> > I also looked at your docs and researched online, but unclear on these
> > parameters what to use when. [ setting autoDeploy=false (or) having
> > deployIgnore attribute somewhere ?]
>
> Set autoDeploy to false.
>
> Mark
>
> -
> To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org
> For additional commands, e-mail: users-h...@tomcat.apache.org
>
>

Re: Help with Tomcat Automatic Application Deployment

[Mark Thomas]

On 08/05/18 19:07, sri devops wrote:
>  Hello Team,
> 
> Currently I have apache-tomcat-8.5.23 installed and running on
> RHEL7.x86_64. I have a war deployed and application is running under
> tomcat. While application is running, if i make any manual changes to some
> config files [ context.xml or server.xml or web.xml] and noticed Tomcat is
> restarting application even though I haven't called tomcat service start
> script.

Changes to server.xml do not trigger web application reload or redeploy.
Neither does it trigger a Tomcat restart.

Changes to web.xml trigger a web application reload because of the
default watched resources (see CATALINA_BASE/conf/context.xml) and
because autoDeploy is true by default.

Changes to context.xml will trigger a web application redeploy because
autoDeploy is true by default.


> My intention is,
> 1) At first when there's initial war deployed and tomcat service start
> script is called, tomcat should extract war and app should work
> 2) Second, While tomcat is in running state and application is running and
> if i make any manual changes to any tomcat config file, I do not want
> application to auto magically restart.
> 
> *my server.xml looks as below*
> 
> unpackWARs="true" autoDeploy="true">
> 
> 
> I also looked at your docs and researched online, but unclear on these
> parameters what to use when. [ setting autoDeploy=false (or) having
> deployIgnore attribute somewhere ?]

Set autoDeploy to false.

Mark

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RE: Help with Tomcat Automatic Application Deployment

[Jäkel , Guido]

Dear Srinath,

take a look at the Configuration Elements for

/Context/WatchedResource

Probably included at the main context.xml  file or the one of your application 
(, see https://tomcat.apache.org/tomcat-8.5-doc/config/context.html).

Greetings

Guido

>-Original Message-
>From: sri devops [mailto:sri.devop...@gmail.com]
>Sent: Tuesday, May 08, 2018 8:08 PM
>To: users@tomcat.apache.org
>Subject: Help with Tomcat Automatic Application Deployment
>
> Hello Team,
>
>Currently I have apache-tomcat-8.5.23 installed and running on
>RHEL7.x86_64. I have a war deployed and application is running under
>tomcat. While application is running, if i make any manual changes to some
>config files [ context.xml or server.xml or web.xml] and noticed Tomcat is
>restarting application even though I haven't called tomcat service start
>script.
>
>My intention is,
>1) At first when there's initial war deployed and tomcat service start
>script is called, tomcat should extract war and app should work
>2) Second, While tomcat is in running state and application is running and
>if i make any manual changes to any tomcat config file, I do not want
>application to auto magically restart.
>
>*my server.xml looks as below*
>
>   unpackWARs="true" autoDeploy="true">
>
>
>I also looked at your docs and researched online, but unclear on these
>parameters what to use when. [ setting autoDeploy=false (or) having
>deployIgnore attribute somewhere ?]
>
>Thanks in Advance,
>
>Srinath

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