Resolved Plesk 18.0.30 and apache graceful restart

[EmilioO]

After upgrading to Plesk 18.0.30 in Ubuntu 16.04.7 LTS apache gracefully restart seems not working well.

In this morning apache has stopped 3 times, 502 bad gateway errors. I run: service apache restart and works again but about 30 minutes after apache goes down.

In apache logs at the time it's stop:

[mpm_prefork:notice] [pid 11915] AH00171: Graceful restart requested, doing restart

[Wed Sep 16 14:00:33.871226 2020] [:alert] [pid 11923] (4)Interrupted system call: FastCGI: read() from pipe failed (0)

[Wed Sep 16 14:00:33.871322 2020] [:alert] [pid 11923] (4)Interrupted system call: FastCGI: the PM is shutting down, Apache seems to have disappeared - bye

[Wed Sep 16 14:00:34.190598 2020] [:notice] [pid 11915] mod_bw : Memory Allocated 0 bytes (each conf takes 48 bytes)

[Wed Sep 16 14:00:34.190623 2020] [:notice] [pid 11915] mod_bw : Version 0.92 - Initialized [0 Confs]

[Wed Sep 16 14:00:35.208190 2020] [fcgid:emerg] [pid 11915] (9)Bad file descriptor: mod_fcgid: Can't lock process table for initialization

[Wed Sep 16 14:00:35.208353 2020] [:notice] [pid 23246] FastCGI: process manager initialized (pid 23246)

[Wed Sep 16 14:00:35.210659 2020] [:alert] [pid 23246] FastCGI: read() from pipe failed (0)

[Wed Sep 16 14:00:35.210686 2020] [:alert] [pid 23246] FastCGI: the PM is shutting down, Apache seems to have disappeared - bye


I've run Plesk repair web without change.

Temporal I've disabled apache graceful restart.

 

[EmilioO]

update: with apache gracefull restart disabled problem persists.
if I set apache restart interval to 60 seconds. Apache stops after this time.
Only one entry en error.log: [mpm_prefork:notice] [pid 5223] AH00169: caught SIGTERM, shutting down

 

[EmilioO]

restarting entire server solves the problem
Problem persists I've receive this error:

Unable to generate the web server configuration file on the host <kinetica.mobi> because of the following errors:
Template_Exception: Can not restart web server:
file: /opt/psa/admin/plib/Service/Driver/Web/Server/Apache.php
line: 122
code: 0

Searching in logs:

[Thu Sep 17 11:29:16.160073 2020] [mpm_prefork:notice] [pid 27842] AH00169: caught SIGTERM, shutting down

Sep 17 11:29:17 kinetica apache2[28389]:  *
Sep 17 11:29:17 kinetica systemd[1]: Stopped LSB: Apache2 web server.

sep 17 11:29:17 kinetica.mobi apache2[28389]:  *
sep 17 11:29:17 kinetica.mobi systemd[1]: Stopped LSB: Apache2 web server.
sep 17 11:29:17 kinetica.mobi audit[1]: SERVICE_STOP pid=1 uid=0 auid=4294967295 ses=4294967295 msg='unit=apache2 comm="systemd" exe="/lib/systemd/systemd" hostname=? addr=? terminal=? res=success



 Details: [2020-09-17 12:36:40.687] ERR [util_exec] proc_close()
      failed ['/opt/psa/admin/bin/apache_control_adapter' '--restart'
      '--restart-interval' '1800' '--http-port' '7080' '--https-port'
      '7081'] with exit code [255]
      [2020-09-17 12:37:04.029] ERR [panel] Apache config
      (16003388100.98830100) generation failed: Template_Exception:
      Can not restart web server:
      file: /opt/psa/admin/plib/Service/Driver/Web/Server/Apache.php
      line: 122
      code: 0
      Can not restart web server:


● apache2.service - LSB: Apache2 web server
   Loaded: loaded (/etc/init.d/apache2; bad; vendor preset: enabled)
  Drop-In: /lib/systemd/system/apache2.service.d
           └─apache2-systemd.conf, limit_nofile.conf
   Active: inactive (dead) since jue 2020-09-17 12:34:38 CEST; 4min 33s ago
     Docs: man:systemd-sysv-generator(8)
   CGroup: /system.slice/apache2.service
           ├─ 7145 /usr/sbin/apache2 -k start
           ├─17513 /usr/sbin/apache2 -k start
           └─27098 /usr/sbin/apache2 -k start

 

[pidikun]

I've got the same problem here. I'm sitting on Debian 9 and this issue appears after updating to Plesk 18.0.30.
What I also noticed is that right before a apache crash the swap space is reaching limits. I get the same error when trying to use plesk repair:

Template_Exception: Can not restart web server:
file: /opt/psa/admin/plib/Service/Driver/Web/Server/Apache.php
line: 122
code: 0

 

[Robert S Tucker]

Same here. Ubuntu 16.04 LTS, and with the recent update to 18.0.30 I get constant apache errors. This is with apache graceful restart DISABLED.

Unable to generate the web server configuration file on the host <ws.ba***.com> because of the following errors:
Template_Exception: Can not restart web server:

file: /opt/psa/admin/plib/Service/Driver/Web/Server/Apache.php

line: 122

code: 0

Please resolve the errors in web server configuration templates and generate the file again.

 

[normen]

Same issue for me, when trying to fix the installation using "plesk installer update --repatch" and "plesk repair installation" I get the same error when it tries to fix the web configurations.

Ubuntu 16.04LTS, Plesk 18.0.30

Details: [2020-09-20 00:11:49.060] ERR [util_exec] proc_close() failed ['/opt/psa/admin/bin/apache_control_adapter' '--restart' '--restart-interval' '0' '--http-port' '7080' '--https-port' '7081'] with exit code [255]
[2020-09-20 00:11:50.512] ERR [panel] Apache config (16005533770.74415300) generation failed: Template_Exception: Can not restart web server:
file: /opt/psa/admin/plib/Service/Driver/Web/Server/Apache.php
line: 122
code: 0
[2020-09-20 00:13:59.968] ERR [util_exec] proc_close() failed ['/opt/psa/admin/bin/apache_control_adapter' '--restart' '--restart-interval' '0' '--http-port' '7080' '--https-port' '7081'] with exit code [255]
Can not restart web server:

 

[daillusionist]

Same issue for me, running Ubuntu 18.04.5 LTS and Plesk Version 18.0.29 Update #3 (prior to the update to 18.0.30)

 

[IgorG]

Important - PLEASE FOLLOW THIS INSTRUCTION IF YOU BELIEVE THAT FOUND A BUG!

Dear Pleskians, Please, click Submit Report button and use the template in this special forum subsection if you really believe you discovered a new bug and need to report it to the Plesk developers. It does allow us to handle and resolve your requests much more efficiently. Please be careful...

talk.plesk.com

 

[normen]

Important - PLEASE FOLLOW THIS INSTRUCTION IF YOU BELIEVE THAT FOUND A BUG!

Dear Pleskians, Please, click Submit Report button and use the template in this special forum subsection if you really believe you discovered a new bug and need to report it to the Plesk developers. It does allow us to handle and resolve your requests much more efficiently. Please be careful...

talk.plesk.com

I am not allowed to post there.. I guess we all are "new pleskians" so we all can't. The issue seems quite real though.

 

[EmilioO]

I've created the report.

 

[Robert S Tucker]

I've created the report.

Thanks! - as an additional note, it appears to want to create mail templates for domains which do not have mail enabled. these then fail and therefore the issue.

rgds
Robert

 

[Robert S Tucker]

Any follow up?

 

[pidikun]

Please follow up on the issue here:
Link to bug report

 

[VNick]

Thank you for the provided information. Those affected may try to workaround the issue by executing as root:

sed -i -e 's|^\(apache_status_linux_debian\)|_\1|g' /opt/psa/admin/sbin/pleskrc

 

[EmilioO]

It's seem that works. Apache working without issues since yesterday afternoon.