PG_CTLCLUSTER
Section: Debian PostgreSQL infrastructure (1)
Updated: 2023-03-14
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NAME
pg_ctlcluster - start/stop/restart/reload a PostgreSQL cluster
SYNOPSIS
pg_ctlcluster [options] cluster-version cluster-name action [-- pg_ctl options]
where action = start|stop|restart|reload|status|promote
DESCRIPTION
This program controls the postgres 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.
To ease integration with systemd operation, the alternative syntax
"pg_ctlcluster version-cluster action" is also supported,
as well as putting the action first (matching the ordering used by systemctl).
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 PostgreSQL server process (postgres(1)) is started on it. Exits with
0 on success, with 2 if the server is already running, and with 1 on other
failure conditions.
- stop
-
Stops the postgres(1) server of the given cluster. By default, ``fast''
shutdown mode is used.
- restart
-
Stops the server if it is running and starts it (again).
- reload
-
Causes the configuration files to be re-read without a full shutdown of the
server.
- status
-
Checks whether a server is running. If it is, the PID and the command line
options that were used to invoke it are displayed.
- promote
-
Commands a running standby server to exit recovery and begin read-write
operations.
OPTIONS
- -f|--force
-
For stop and restart, the ``fast'' mode is used which rolls back all active
transactions, disconnects clients immediately 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 postgres process is
killed. Exits with 0 on success, with 2 if the server is not running, and with
1 on other failure conditions. This mode should only be used when the machine
is about to be shut down.
- -m|--mode [smart|fast|immediate]
-
Shutdown mode to use for stop and restart actions, default is fast.
See pg_ctl(1) for documentation.
- --foreground
-
Start postgres in foreground, without daemonizing via pg_ctl.
- --stdlog
-
When --foreground is in use, redirect stderr to the standard logfile in
/var/log/postgresql/
. (Default when not run in foreground.)
- --skip-systemctl-redirect
-
When running as root, pg_ctlcluster redirects actions to systemctl so
running clusters are properly supervised by systemd. This option skips the
redirect; it is used in the postgresql@.service unit file. The redirect is
also skipped if additional postgres or pg_ctl options are provided.
- --bindir directory
-
Path to pg_ctl. (Default is
/usr/lib/postgresql/
version
/bin
.)
- -o|--options option
-
Pass given option as command line option to the
postgres
process. It is
possible to specify -o multiple times. See postgres(1) for a
description of valid options.
- pg_ctl options
-
Pass given pg_ctl options as command line options to pg_ctl. See pg_ctl(1)
for a description of valid options.
FILES
-
/etc/postgresql/
cluster-version
/
cluster-name
/pg_ctl.conf
-
This configuration file contains cluster specific options to be passed to
pg_ctl(1).
-
/etc/postgresql/
cluster-version
/
cluster-name
/start.conf
-
This configuration file controls the start/stop behavior of the cluster. See
section ``STARTUP CONTROL'' in pg_createcluster(8) for details.
BUGS
Changing the port number on startup using -o -p will not work as it breaks
the checks for running clusters.
SEE ALSO
pg_createcluster(8), pg_ctl(1), pg_wrapper(1), pg_lsclusters(1),
postgres(1)
AUTHOR
Martin Pitt <mpitt@debian.org>
Index
- NAME
-
- SYNOPSIS
-
- DESCRIPTION
-
- ACTIONS
-
- OPTIONS
-
- FILES
-
- BUGS
-
- SEE ALSO
-
- AUTHOR
-
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Time: 23:44:12 GMT, April 23, 2024