When apache restart, php background process are killed

Question

I have an issue with apache and php.

I call this script in php:

exec("nohup sudo QUIET=y sh foo.sh > /home/tmp/log.txt 2>&1 & echo $!", $res);

Shortly after, the script foo.sh need to restart apache to include new configuration files:

/etc/init.d/apachectl restart

In command line, it works fine but in my php script the process is killed at the same time apache is restarted. Why? I thought nohup detach the processus of its parent.

(I point out that i can't change the sh script)

Any help would be greatly appreciated.

nohup doesn't detach it from its parent, it just keeps it from being closed down when the terminal session ends (hangs up, "hup") — Adrian, Apr 03 '13 at 15:06
I can't change the sh script (it belongs to the company), sorry :/ — user1883264, Apr 03 '13 at 15:08
Apache's signals support and how it reacts are documented here: http://httpd.apache.org/docs/2.2/stopping.html. HUP kills all the children but does not restart the original parent. — Marc B, Apr 03 '13 at 15:09
If nohup doesn't detach from its parent, would you know an other command ? — user1883264, Apr 03 '13 at 15:10

score 3 · Answer 1 · answered Apr 03 '13 at 15:06

3

You should use /etc/init.d/apachectl reload if the only thing you want is to reread configuration files.

answered Apr 03 '13 at 15:06

Turgal

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I can't change the sh script (it belongs to the company), sorry :/, any other ideas? – user1883264 Apr 03 '13 at 15:17
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@user1883264 If you cannot change the Shell script, because it belongs to the company.. And yo are on a project which actively uses this; then either submit a request the edit this file to your manager OR create a copy of this shell; give it a different name and change as you need – Daryl Gill Apr 03 '13 at 15:39

score 1 · Answer 2 · answered Apr 03 '13 at 15:12

1

/etc/init.d/apachectl reload

This will not stop the service, but keep it running and refreshes the processes configuration.

answered Apr 03 '13 at 15:12

Daryl Gill

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score 0 · Answer 3 · answered Apr 03 '13 at 15:07

0

Use /etc/init.d/apachectl reload instead if you dont want to kill the process.

answered Apr 03 '13 at 15:07

castis

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score 0 · Answer 4 · answered Dec 08 '15 at 12:31

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Since apache restart sends SIGTERM, not SIGHUP, you should handle SIGTERM from foo.sh

answered Dec 08 '15 at 12:31

Chul-Woong Yang

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When apache restart, php background process are killed

4 Answers4