Dear All,
For setting up a webserver in a small docker container it is good practice to
run the server in the foreground via "exec"
See E.g.
https://github.com/docker-library/httpd/blob/master/2.4/httpd-foreground
This ensures that the apache binary gets PID 1 and signals are propagated (and
I think zombies are reaped).
However sometimes it would be nice to use the apachectl script for this, since
it loads environment variables, ...
Currently does not work, since inside apachectl the actual apache programm is
called without "exec". The result is that the apachectl script remains with PID
1 and e.g. signals (like USR1) for the container get not propagated correctly
to the apache process.
If one patches the apachectl so that all calls to the apache binary are done
with "exec", everthing works as expected.
(e.g. for debian `sed -i 's/\($HTTPD ${APACHE_ARGUMENTS}\)/exec \1/'
/usr/sbin/apache2ctl` )
Might it be a sensible change in the apachectl to always call the binary with
"exec" (at least on the systems where exec exists)
Thanks
Best
Martin
------------------------------------------------------------------------
Dr. Martin Köhler
Head of library and documentation
Deutsches Elektronen-Synchrotron - DESY
Building 01d Room O1.443
phone: +49-40-8998-1814 Notkestr. 85
fax: +49-40-8994-1814 22607 Hamburg
e-mail: martin.koeh...@desy.de Germany
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