On 8/2/2021 12:15 μ.μ., Nikolaos Milas wrote:
How can we configure systemd to start postfix AFTER clamd@amavisd
(triggered by amavisd) has started?
...
...how could we configure systemd so that clamd@amavisd is also
stopped when amavisd is requested to stop?
Trying to answer my own question, I found:
https://serverfault.com/questions/482730/systemd-dependencies-and-boot-order
which I think provides all needed information on how to do it.
In this case, postfix.service file (/etc/systemd/postfix.service as a
copy of /usr/lib/systemd/system/postfix.service) should include:
Requires=amavisd.service
to make postfix start after amavisd.
Similarly, [email protected] (/etc/systemd/[email protected] as a copy of
/usr/lib/systemd/system/[email protected]) could inlcude:
BindsTo=amavisd.service
to force clamd@amavisd to stop when amavisd is stopped.
Finally, as my systemd know-how is insufficient, could someone please
clarify things on the need to have clamd@amavisd service enabled or not?
Specifically, is it sufficient (for correct startup and operation of
clamd@amavisd service) that amavisd.service includes:
[email protected]
(already configured by default in the respective CentOS package) even if
the service is not explicitly configured as enabled or we explicitly
ALSO NEED to have it enabled:
systemctl enable clamd@amavisd
and if so, why?
Thanks,
Nick
