Re: initdb when data/ folder has mount points

On 2/22/18 1:16 AM, Michael Paquier wrote:

On Wed, Feb 21, 2018 at 07:56:38PM -0500, David Steele wrote:

On 2/21/18 7:01 PM, Tom Lane wrote:

For pg_log, just put it somewhere else and set the appropriate
configuration option to say where to write the postmaster log files.
Or you could use a symlink, like the solution for pg_xlog, but
I don't see any advantage there.

Symlinking pg_log is not ideal because the logs end up in the backup. It
gets pretty weird when those logs get restored to a standby and somebody
starts reading them.

log_directory in postgresql.conf san be set up with an absolute
directory value.  So there is no actual need for a symlink with pg_log.
This also reduces the amount of data transfered as part of base
backups without actually needing them. 

Yes, I really should have said having pg_log in the data directory at
all is not ideal, symlinked or no.

Is there a Best Practices wiki?  (https://wiki.postgresql.org/wiki/Detailed_installation_guides is pretty old and thin.)