pg_autoctl disable monitor
pg_autoctl disable monitor - Disable the monitor for this node
Synopsis
It is possible to disable the pg_auto_failover monitor and enable it again online in a running pg_autoctl Postgres node. The main use-cases where this operation is useful is when the monitor node has to be replaced, either after a full crash of the previous monitor node, of for migrating to a new monitor node (hardware replacement, region or zone migration, etc).
usage: pg_autoctl disable monitor [ --pgdata --force ]
--pgdata path to data directory
--force force unregistering from the monitor
Options
- --pgdata
Location of the Postgres node being managed locally. Defaults to the environment variable
PGDATA
. Use--monitor
to connect to a monitor from anywhere, rather than the monitor URI used by a local Postgres node managed withpg_autoctl
.- --force
The
--force
covers the two following situations:By default, the command expects to be able to connect to the current monitor. When the current known monitor in the setup is not running anymore, use
--force
to skip this step.When
pg_autoctl
could connect to the monitor and the node is found there, this is normally an error that prevents from disabling the monitor. Using--force
allows the command to drop the node from the monitor and continue with disabling the monitor.
Examples
$ pg_autoctl show state
Name | Node | Host:Port | LSN | Connection | Current State | Assigned State
------+-------+----------------+-----------+--------------+---------------------+--------------------
node1 | 1 | localhost:5501 | 0/4000148 | read-write | primary | primary
node2 | 2 | localhost:5502 | 0/4000148 | read-only | secondary | secondary
node3 | 3 | localhost:5503 | 0/4000148 | read-only | secondary | secondary
$ pg_autoctl disable monitor --pgdata node3
12:41:21 43039 INFO Found node 3 "node3" (localhost:5503) on the monitor
12:41:21 43039 FATAL Use --force to remove the node from the monitor
$ pg_autoctl disable monitor --pgdata node3 --force
12:41:32 43219 INFO Removing node 3 "node3" (localhost:5503) from monitor
$ pg_autoctl show state
Name | Node | Host:Port | LSN | Connection | Current State | Assigned State
------+-------+----------------+-----------+--------------+---------------------+--------------------
node1 | 1 | localhost:5501 | 0/4000760 | read-write | primary | primary
node2 | 2 | localhost:5502 | 0/4000760 | read-only | secondary | secondary