[Pkg-haproxy-maintainers] ²haproxy upgrade fail because "start" fail when haproxy was allready running

Vincent Bernat bernat at debian.org
Wed Dec 9 20:49:41 UTC 2015

 ❦  9 décembre 2015 17:24 +0100, Ghislain <gadnet at aqueos.com> :

>  i tried to upgrade haproxy using the backport on wheezy from the
> basic repo to have the mast 1.5 version but it fails because:
> Setting up haproxy (1.5.15-1~bpo7+1) ...
> [....] Starting haproxy: haproxy/usr/sbin/haproxy already running.
>  failed!
> invoke-rc.d: initscript haproxy, action "start" failed.
> dpkg: error processing haproxy (--configure):
>  subprocess installed post-installation script returned error exit status 2
> Errors were encountered while processing:
>  haproxy
> E: Sub-process /usr/bin/dpkg returned an error code (1)

You should have a tentative to stop HAProxy earlier in your upgrade. Is
it here? Maybe there is some error message.
Make sure your code "does nothing" gracefully.
            - The Elements of Programming Style (Kernighan & Plauger)
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