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Posted to users@tomcat.apache.org by "Verma, Sahil" <sv...@dxc.com> on 2022/05/11 18:01:44 UTC
Help Needed for Root cause - ApacheTomcat services stopped
Hi Team,
In our production environment, ApacheTomcat services went down. We have checked the logs and found below error -
[Thu May 05 10:34:51.441668 2022] [mpm_event:error] [pid 27440:tid 140464737793792] AH00484: server reached MaxRequestWorkers setting, consider raising the MaxRequestWorkers setting
Please help to find the root cause of the issue why services got stopped. Kindly let us know if any other information required.
Apache version - 2.2
OS - Linux
Thanks,
Sahil
DXC Technology India Private Limited - 9th Floor, Block-D Littlewood Tower, TRIL Info Park Ramanujan IT City, Rajiv Gandhi Salai, Taramani, Chennai - 600113. CIN: U72900TN2015FTC102489.
DXC Technology Company -- This message is transmitted to you by or on behalf of DXC Technology Company or one of its affiliates. It is intended exclusively for the addressee. The substance of this message, along with any attachments, may contain proprietary, confidential or privileged information or information that is otherwise legally exempt from disclosure. Any unauthorized review, use, disclosure or distribution is prohibited. If you are not the intended recipient of this message, you are not authorized to read, print, retain, copy or disseminate any part of this message. If you have received this message in error, please destroy and delete all copies and notify the sender by return e-mail. Regardless of content, this e-mail shall not operate to bind DXC Technology Company or any of its affiliates to any order or other contract unless pursuant to explicit written agreement or government initiative expressly permitting the use of e-mail for such purpose.
Re: Help Needed for installation of apache-tomcat-8.5.5
Posted by Olaf Kock <to...@olafkock.de>.
On 08.10.22 05:09, Verma, Sahil wrote:
>
> Hi Team,
>
> We have a requirement to install Tomcat 8.5.5 version in Linux
> environment. Please help with steps of downloading the package and
> installation steps.
>
> Linux version - Red Hat Enterprise Linux release 8.6
>
You have a requirement to install a 6 years old version of a software on
a current Enterprise-labelled OS?
I'd say: Start with the documentation
(https://tomcat.apache.org/tomcat-8.5-doc/setup.html), but use the
current release - if you want to use Tomcat 8.5, use 8.5.82 (at the time
of writing this)
If you need other steps, please be more specific about what you need.
Olaf
Help Needed for installation of apache-tomcat-8.5.5
Posted by "Verma, Sahil" <sv...@dxc.com>.
Hi Team,
We have a requirement to install Tomcat 8.5.5 version in Linux environment. Please help with steps of downloading the package and installation steps.
Linux version - Red Hat Enterprise Linux release 8.6
Thanks and Regards,
Sahil Verma
AMS Middleware shared Team.
[cid:image001.jpg@01D8DAF1.15A5CAB0]
Galaxy IT Park, Tower-A 44/45, Sector 62, Noida-201307, India
Mobile: +91-9643206413 | sverma69@dxc.com<ma...@dxc.com> | www.dxc.technology<http://www.dxc.technology/>
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DXC Technology India Private Limited - 9th Floor, Block-D Littlewood Tower, TRIL Info Park Ramanujan IT City, Rajiv Gandhi Salai, Taramani, Chennai - 600113. CIN: U72900TN2015FTC102489.
DXC Technology Company -- This message is transmitted to you by or on behalf of DXC Technology Company or one of its affiliates. It is intended exclusively for the addressee. The substance of this message, along with any attachments, may contain proprietary, confidential or privileged information or information that is otherwise legally exempt from disclosure. Any unauthorized review, use, disclosure or distribution is prohibited. If you are not the intended recipient of this message, you are not authorized to read, print, retain, copy or disseminate any part of this message. If you have received this message in error, please destroy and delete all copies and notify the sender by return e-mail. Regardless of content, this e-mail shall not operate to bind DXC Technology Company or any of its affiliates to any order or other contract unless pursuant to explicit written agreement or government initiative expressly permitting the use of e-mail for such purpose.
RE: Help Needed for Root cause - ApacheTomcat services stopped
Posted by "Verma, Sahil" <sv...@dxc.com>.
Hi Thomas,
Thank you very much for the valuable information. It will surely help us to find the root cause of the issue. We are monitoring our environment as per your suggestions.
Regards,
Sahil
-----Original Message-----
From: Thomas Hoffmann (Speed4Trade GmbH) <Th...@speed4trade.com.INVALID>
Sent: Thursday, May 12, 2022 12:01 PM
To: Tomcat Users List <us...@tomcat.apache.org>
Subject: AW: Help Needed for Root cause - ApacheTomcat services stopped
Hello Sahil,
> -----Ursprüngliche Nachricht-----
> Von: Verma, Sahil <sv...@dxc.com>
> Gesendet: Mittwoch, 11. Mai 2022 20:56
> An: Tomcat Users List <us...@tomcat.apache.org>
> Betreff: RE: Help Needed for Root cause - ApacheTomcat services
> stopped
>
> Hi Mark,
> Good day!
>
> Thank you very much for the reply!
>
> Yes, we are using both Apache & Tomcat environment.
>
> Apache - 2.4.25 version
> Tomcat - 8.5.5 version
> OS - Linux
>
>
> You are correct, we got this error in Apache webserver logs. We are
> attaching both Apache httpd (error.log) and Tomcat (Catalina.out) logs
>
> Please let us know if any other information required.
>
> Thanks,
> Sahil
>
>
>
> -----Original Message-----
> From: Mark Thomas <ma...@apache.org>
> Sent: Wednesday, May 11, 2022 11:39 PM
> To: users@tomcat.apache.org
> Subject: Re: Help Needed for Root cause - ApacheTomcat services
> stopped
>
> That is an Apache Web Server (httpd) log message, not an Apache Tomcat
> log message. Are you sure you are using Apache Tomcat?
>
> Mark
>
>
> On 11/05/2022 19:01, Verma, Sahil wrote:
> > Hi Team,
> >
> >
> >
> > In our production environment, ApacheTomcat services went down. We
> > have checked the logs and found below error -
> >
> >
> >
> > [Thu May 05 10:34:51.441668 2022] [mpm_event:error] [pid 27440:tid
> > 140464737793792] AH00484: server reached MaxRequestWorkers setting,
> > consider raising the MaxRequestWorkers setting
> >
> >
> >
> > Please help to find the root cause of the issue why services got stopped.
> Kindly let us know if any other information required.
> >
> > Apache version - 2.2
> > OS - Linux
> >
> >
> > Thanks,
> > Sahil
> >
Tomcat-Logs looks fine (except some warnings which doesn’t matter here).
The MaxRequestWorkers is documented here:
https://clicktime.symantec.com/3VtPgJ8rmEck16yTrydmCdA6xU?u=https%3A%2F%2Fhttpd.apache.org%2Fdocs%2F2.4%2Fen%2Fmod%2Fmpm_common.html%23maxrequestworkers
You actually have a load or performance issue. This is usually related to your application or environment.
You can activate the access-log (either on apache or tomcat side) to view the number of requests.
Also log the processing time to see if some requests are taking too long.
Another option would be to activate and check tomcat-manager about the currently processed requests or use Apachetop (https://clicktime.symantec.com/3WxaHnjWYoWZzcQmX18dHkP6xU?u=https%3A%2F%2Flinux.die.net%2Fman%2F1%2Fapachetop)
I can think of two possible cases:
1) Requests are taking too long (performance issue in the application) and thus the number of workers get exhausted
2) You have a high load / number or requests. If you still have CPU and memory left, you can increase the workers in the Apache configuration
Greetings,
Thomas
DXC Technology India Private Limited - 9th Floor, Block-D Littlewood Tower, TRIL Info Park Ramanujan IT City, Rajiv Gandhi Salai, Taramani, Chennai - 600113. CIN: U72900TN2015FTC102489.
DXC Technology Company -- This message is transmitted to you by or on behalf of DXC Technology Company or one of its affiliates. It is intended exclusively for the addressee. The substance of this message, along with any attachments, may contain proprietary, confidential or privileged information or information that is otherwise legally exempt from disclosure. Any unauthorized review, use, disclosure or distribution is prohibited. If you are not the intended recipient of this message, you are not authorized to read, print, retain, copy or disseminate any part of this message. If you have received this message in error, please destroy and delete all copies and notify the sender by return e-mail. Regardless of content, this e-mail shall not operate to bind DXC Technology Company or any of its affiliates to any order or other contract unless pursuant to explicit written agreement or government initiative expressly permitting the use of e-mail for such purpose.
AW: Help Needed for Root cause - ApacheTomcat services stopped
Posted by "Thomas Hoffmann (Speed4Trade GmbH)" <Th...@speed4trade.com.INVALID>.
Hello Sahil,
> -----Ursprüngliche Nachricht-----
> Von: Verma, Sahil <sv...@dxc.com>
> Gesendet: Mittwoch, 11. Mai 2022 20:56
> An: Tomcat Users List <us...@tomcat.apache.org>
> Betreff: RE: Help Needed for Root cause - ApacheTomcat services stopped
>
> Hi Mark,
> Good day!
>
> Thank you very much for the reply!
>
> Yes, we are using both Apache & Tomcat environment.
>
> Apache - 2.4.25 version
> Tomcat - 8.5.5 version
> OS - Linux
>
>
> You are correct, we got this error in Apache webserver logs. We are attaching
> both Apache httpd (error.log) and Tomcat (Catalina.out) logs
>
> Please let us know if any other information required.
>
> Thanks,
> Sahil
>
>
>
> -----Original Message-----
> From: Mark Thomas <ma...@apache.org>
> Sent: Wednesday, May 11, 2022 11:39 PM
> To: users@tomcat.apache.org
> Subject: Re: Help Needed for Root cause - ApacheTomcat services stopped
>
> That is an Apache Web Server (httpd) log message, not an Apache Tomcat log
> message. Are you sure you are using Apache Tomcat?
>
> Mark
>
>
> On 11/05/2022 19:01, Verma, Sahil wrote:
> > Hi Team,
> >
> >
> >
> > In our production environment, ApacheTomcat services went down. We
> > have checked the logs and found below error -
> >
> >
> >
> > [Thu May 05 10:34:51.441668 2022] [mpm_event:error] [pid 27440:tid
> > 140464737793792] AH00484: server reached MaxRequestWorkers setting,
> > consider raising the MaxRequestWorkers setting
> >
> >
> >
> > Please help to find the root cause of the issue why services got stopped.
> Kindly let us know if any other information required.
> >
> > Apache version - 2.2
> > OS - Linux
> >
> >
> > Thanks,
> > Sahil
> >
Tomcat-Logs looks fine (except some warnings which doesn’t matter here).
The MaxRequestWorkers is documented here:
https://httpd.apache.org/docs/2.4/en/mod/mpm_common.html#maxrequestworkers
You actually have a load or performance issue. This is usually related to your application or environment.
You can activate the access-log (either on apache or tomcat side) to view the number of requests.
Also log the processing time to see if some requests are taking too long.
Another option would be to activate and check tomcat-manager about the currently processed requests or use Apachetop (https://linux.die.net/man/1/apachetop)
I can think of two possible cases:
1) Requests are taking too long (performance issue in the application) and thus the number of workers get exhausted
2) You have a high load / number or requests. If you still have CPU and memory left, you can increase the workers in the Apache configuration
Greetings,
Thomas
Re: Help Needed for Root cause - ApacheTomcat services stopped
Posted by Christopher Schultz <ch...@christopherschultz.net>.
Sahil,
On 5/11/22 14:56, Verma, Sahil wrote:
> Yes, we are using both Apache & Tomcat environment.
>
> Apache - 2.4.25 version
> Tomcat - 8.5.5 version
If this version number is correct, you should *seriously* consider
upgrading to the latest Tomcat 8.5.x release. That release is more than
5 years old and contains published security vulnerabilities.
> You are correct, we got this error in Apache webserver logs. We are
> attaching both Apache httpd (error.log) and Tomcat (Catalina.out) logs
>
> Please let us know if any other information required.
Are you sure you actually have a problem? Or is the only problem that
you are seeing this message in your log files?
For example, are you observing any decrease in availability or
performance when you see these messages appear in the logs?
-chris
> -----Original Message-----
> From: Mark Thomas <ma...@apache.org>
> Sent: Wednesday, May 11, 2022 11:39 PM
> To: users@tomcat.apache.org
> Subject: Re: Help Needed for Root cause - ApacheTomcat services stopped
>
> That is an Apache Web Server (httpd) log message, not an Apache Tomcat log message. Are you sure you are using Apache Tomcat?
>
> Mark
>
>
> On 11/05/2022 19:01, Verma, Sahil wrote:
>> Hi Team,
>>
>>
>>
>> In our production environment, ApacheTomcat services went down. We
>> have checked the logs and found below error -
>>
>>
>>
>> [Thu May 05 10:34:51.441668 2022] [mpm_event:error] [pid 27440:tid
>> 140464737793792] AH00484: server reached MaxRequestWorkers setting,
>> consider raising the MaxRequestWorkers setting
>>
>>
>>
>> Please help to find the root cause of the issue why services got stopped. Kindly let us know if any other information required.
>>
>> Apache version - 2.2
>> OS - Linux
>>
>>
>> Thanks,
>> Sahil
>>
>> DXC Technology India Private Limited - 9th Floor, Block-D Littlewood Tower, TRIL Info Park Ramanujan IT City, Rajiv Gandhi Salai, Taramani, Chennai - 600113. CIN: U72900TN2015FTC102489.
>> DXC Technology Company -- This message is transmitted to you by or on behalf of DXC Technology Company or one of its affiliates. It is intended exclusively for the addressee. The substance of this message, along with any attachments, may contain proprietary, confidential or privileged information or information that is otherwise legally exempt from disclosure. Any unauthorized review, use, disclosure or distribution is prohibited. If you are not the intended recipient of this message, you are not authorized to read, print, retain, copy or disseminate any part of this message. If you have received this message in error, please destroy and delete all copies and notify the sender by return e-mail. Regardless of content, this e-mail shall not operate to bind DXC Technology Company or any of its affiliates to any order or other contract unless pursuant to explicit written agreement or government initiative expressly permitting the use of e-mail for such purpose.
>>
>
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RE: Help Needed for Root cause - ApacheTomcat services stopped
Posted by "Verma, Sahil" <sv...@dxc.com>.
Hi Mark,
Good day!
Thank you very much for the reply!
Yes, we are using both Apache & Tomcat environment.
Apache - 2.4.25 version
Tomcat - 8.5.5 version
OS - Linux
You are correct, we got this error in Apache webserver logs. We are attaching both Apache httpd (error.log) and Tomcat (Catalina.out) logs
Please let us know if any other information required.
Thanks,
Sahil
-----Original Message-----
From: Mark Thomas <ma...@apache.org>
Sent: Wednesday, May 11, 2022 11:39 PM
To: users@tomcat.apache.org
Subject: Re: Help Needed for Root cause - ApacheTomcat services stopped
That is an Apache Web Server (httpd) log message, not an Apache Tomcat log message. Are you sure you are using Apache Tomcat?
Mark
On 11/05/2022 19:01, Verma, Sahil wrote:
> Hi Team,
>
>
>
> In our production environment, ApacheTomcat services went down. We
> have checked the logs and found below error -
>
>
>
> [Thu May 05 10:34:51.441668 2022] [mpm_event:error] [pid 27440:tid
> 140464737793792] AH00484: server reached MaxRequestWorkers setting,
> consider raising the MaxRequestWorkers setting
>
>
>
> Please help to find the root cause of the issue why services got stopped. Kindly let us know if any other information required.
>
> Apache version - 2.2
> OS - Linux
>
>
> Thanks,
> Sahil
>
> DXC Technology India Private Limited - 9th Floor, Block-D Littlewood Tower, TRIL Info Park Ramanujan IT City, Rajiv Gandhi Salai, Taramani, Chennai - 600113. CIN: U72900TN2015FTC102489.
> DXC Technology Company -- This message is transmitted to you by or on behalf of DXC Technology Company or one of its affiliates. It is intended exclusively for the addressee. The substance of this message, along with any attachments, may contain proprietary, confidential or privileged information or information that is otherwise legally exempt from disclosure. Any unauthorized review, use, disclosure or distribution is prohibited. If you are not the intended recipient of this message, you are not authorized to read, print, retain, copy or disseminate any part of this message. If you have received this message in error, please destroy and delete all copies and notify the sender by return e-mail. Regardless of content, this e-mail shall not operate to bind DXC Technology Company or any of its affiliates to any order or other contract unless pursuant to explicit written agreement or government initiative expressly permitting the use of e-mail for such purpose.
>
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Re: Help Needed for Root cause - ApacheTomcat services stopped
Posted by Mark Thomas <ma...@apache.org>.
That is an Apache Web Server (httpd) log message, not an Apache Tomcat
log message. Are you sure you are using Apache Tomcat?
Mark
On 11/05/2022 19:01, Verma, Sahil wrote:
> Hi Team,
>
>
>
> In our production environment, ApacheTomcat services went down. We have checked the logs and found below error -
>
>
>
> [Thu May 05 10:34:51.441668 2022] [mpm_event:error] [pid 27440:tid 140464737793792] AH00484: server reached MaxRequestWorkers setting, consider raising the MaxRequestWorkers setting
>
>
>
> Please help to find the root cause of the issue why services got stopped. Kindly let us know if any other information required.
>
> Apache version - 2.2
> OS - Linux
>
>
> Thanks,
> Sahil
>
> DXC Technology India Private Limited - 9th Floor, Block-D Littlewood Tower, TRIL Info Park Ramanujan IT City, Rajiv Gandhi Salai, Taramani, Chennai - 600113. CIN: U72900TN2015FTC102489.
> DXC Technology Company -- This message is transmitted to you by or on behalf of DXC Technology Company or one of its affiliates. It is intended exclusively for the addressee. The substance of this message, along with any attachments, may contain proprietary, confidential or privileged information or information that is otherwise legally exempt from disclosure. Any unauthorized review, use, disclosure or distribution is prohibited. If you are not the intended recipient of this message, you are not authorized to read, print, retain, copy or disseminate any part of this message. If you have received this message in error, please destroy and delete all copies and notify the sender by return e-mail. Regardless of content, this e-mail shall not operate to bind DXC Technology Company or any of its affiliates to any order or other contract unless pursuant to explicit written agreement or government initiative expressly permitting the use of e-mail for such purpose.
>
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