SELinux question

Paul Howarth paul at
Sun May 28 17:38:59 UTC 2006

On Sun, 2006-05-28 at 17:13 +0200, Zoltan Boszormenyi wrote:
> Hi,
> answering to myself. :-)
> Zoltan Boszormenyi írta:
> > So, how can I fix the current situation and include /home1/pgsql in
> > the postgresql context/domain? I would like to relabel it to recover 
> > the context...
> >
> > BTW the same principle would apply if one would like to create
> > another tablespace for postgresql under another mount point...
> After some more RTFM, it would seem simple:
> semanage fcontext -a -t postgresql_db_t '/home1/pgsql/data(/.*)?'
> semanage fcontext -a -t postgresql_log_t '/home1/pgsql/pgstartup.log'
> fixfiles relabel /home1/pgsql
> But it was not enough. Starting it with "service postgresql start" fails.
> I had to modify the rc script, too. I had to replace /var/lib/pgsql with
> /home1/pgsql everywhere despite the /var/lib/pgsql -> /home1/pgsql symlink.

This will be failing because SELinux is blocking access to reading the
symlink. You should find an avc denial for the lnk_file in your logs.

> But this is enough for adding another tablespace under e.g. /home1/pgsql2:
> mkdir -p /home1/pgsql2/data
> chown -R postgres.postgres /home1/pgsql2
> semanage fcontext -a -t postgresql_db_t '/home1/pgsql2/data(/.*)?'
> fixfiles relabel /home1/pgsql2

An easier way is to bind mount /home/pgsql on /var/lib/pgsql etc. and do
a restorecon -R on the "new" /var/lib/pgsql. That achieves the same
effect without the symlink.


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