where action = start|stop|restart|reload|autovac-start|autovac-stop|autovac-restart
DESCRIPTION
This program controls the postmaster server for a particular cluster. It
essentially wraps the pg_ctl(1) command. It determines the cluster version
and data path and calls the right version of pg_ctl with appropriate
configuration parameters and paths.
You have to start this program as the user who owns the database cluster or as
root.
ACTIONS
start
A log file for this specific cluster is created if it does not exist yet (by
default,
/var/log/postgresql/postgresql- cluster-version
- cluster-name
.log ),
and a PostreSQL server process (postmaster(1)) is started on it. If the
package postgresql-contrib-version is installed, a pg_autovacuum
process is started as well (unless this gets disabled in
/etc/postgresql-common/autovacuum.conf or a cluster-specific
autovacuum.conf file). Please note that server version 8.1 and above does
internal autovacuuming. Exits with 0 on success, with 2 if the server is
already running, and with 1 on other failure conditions.
stop
Stops the postmaster(1) server (and pg_autovacuum, if running) of the
given cluster with increasing force. Initially, the fast mode is used which
rolls back all active transactions and thus shuts down cleanly. If that does
not work, shutdown is attempted again in immediate mode, which can leave the
cluster in an inconsistent state and thus will lead to a recovery run at the
next start. If this still does not help, the postmaster process is killed.
Exits with 0 on success, with 2 if the server is not running, and with 1 on
other failure conditions.
restart
Stops the server if it is running and starts it (again). If pg_autovacuum is
running on the server, it is restarted as well.
reload
Causes the configuration files to be re-read without a full shutdown of the
server.
autovac-start
Starts a pg_autovacuum process for an already running cluster. This normally
happens automatically along with start. This command fails for PostgreSQL 8.1
and above since they do autovacuuming internally.
autovac-stop
Stops the pg_autovacuum process for a running cluster. This normally happens
automatically along with stop. This command fails for PostgreSQL 8.1 and above
since they do autovacuuming internally.
autovac-restart
Restarts a pg_autovacuum process for an already running cluster. This
normally happens automatically along with restart. This command fails for
PostgreSQL 8.1 and above since they do autovacuuming internally.
OPTIONS
-ooption
Pass given option as command line option to the
postmaster process. It is
possible to specify -o multiple times. See postmaster(1) for a
description of valid options.
