[Pkg-postgresql-public] problems with postgresql and systemd after upgrade.

[Daniel Kahn Gillmor]

On Fri 2016-06-10 20:29:55 -0400, peter green wrote:
> About a week ago I upgraded a server from wheezy to jessie. After the OS 
> upgrade I upgraded from postgresql 9.1 to 9.4 using pg_updatecluster. It 
> took a couple of attempts with pg_updatecluster to get things right 
> (mainly because I was using "debversion").

fwiw, i used to do pg_upgradecluster as the postgres user on sysvinit
machines, and it all worked fine.  But of course the postgres user can't
do that systemctl operations that a systemd machine needs, so
pg_upgradecluster needed to be invoked by root.  It would be great to
document this change, in case other people run into the same
difficulties.

        --dkg