[CentOS] Systemd persistent change to service file

[James Hogarth]

On 17 February 2016 at 16:50, Michael H <michael at wemoto.com> wrote:

> Hi All,
>
> I had my database fall over earlier, Initially I thought it was due to a
> change in the OS but the postgresql update overwrote my systemd service
> file.
>
> How can I create a file for my postgresql service that will not be
> overwritten when updates are applied?
>
> Am I correct in thinking it will be something like
>
> vi /etc/systemd/system/postgresql.service.d/postgresql-limit-stack.conf
> #with the contents:
> .include /etc/systemd/system/multi-user.target.wants/postgresql.service
> [Service]
> LimitSTACK=17825792
>
>
Note that when doing the .d override you must not do the .include  ... the
override already includes anythign else (hence override) and the override
mechanism was intended to replace the .include stuff due to the fragility
of that method.