Janet Jacobsen <jsjacobsen(at)lbl(dot)gov> writes:
> Is it possible to create a database cluster on a machine that
> has write access to the shared file system, shut down the
> Postgres server on that machine, and then start up the
> Postgres server on the machine that cannot write to the
> shared file system, and thereafter, *only query* the database.
No. The pid file is only the first and smallest problem you'd run into
with a read-only database filesystem.
regards, tom lane