Обсуждение: data_directory symlinks
Hi
By default pg_createcluster will create a new cluster in /var/lib/postgresql/<version>/<cluster>
I wan't to move my data_directory from this location to another volume (with lots more space). Is it best practice to set the data_directory location --datadir with pg_createcluster, or to just move the data_directory contents to the new volume and then create a symbolic link (as postgres) from /var/lib/postgresql/<version>/ to the new volume? This seems to be essentially the same thing, but I wondered if there were any gotcha's with using symbolic links in this way (e.g. if we tried to run multiple clusters on one host), rather than specifying the data_directory at pg_createcluster time - which subsequently sets this parameter in the postgresql.conf?
Ubuntu Trusty
pg 9.3
Thanks in advance!
Either way is good. You can either create symlinks or move data directory to new mount point. Both will work fine.
You can also use use pg_ctl -D to point to new data_directory.
Regards
Dhananjay
OpenSCG
On Wednesday, 12 March 2014 9:15 PM, Kieren Scott <kierenscott@hotmail.com> wrote:
Hi
By default pg_createcluster will create a new cluster in /var/lib/postgresql/<version>/<cluster>
I wan't to move my data_directory from this location to another volume (with lots more space). Is it best practice to set the data_directory location --datadir with pg_createcluster, or to just move the data_directory contents to the new volume and then create a symbolic link (as postgres) from /var/lib/postgresql/<version>/ to the new volume? This seems to be essentially the same thing, but I wondered if there were any gotcha's with using symbolic links in this way (e.g. if we tried to run multiple clusters on one host), rather than specifying the data_directory at pg_createcluster time - which subsequently sets this parameter in the postgresql.conf?
Ubuntu Trusty
pg 9.3
Thanks in advance!