pgpool_setup

Name

pgpool_setup --  Create a temporary installation of Pgpool-II cluster

Synopsis

pgpool_setup [ option ...]

Description

pgpool_setup creates a temporary installation of Pgpool-II cluster, which includes a Pgpool-II installation and specified number of PostgreSQL installations under current directory. Current directory must be empty before running pgpool_setup .

pgpool_setup is for testing purpose only and should not be used to create production installations.

Currently pgpool_setup supports streaming replication mode, native replication mode and raw mode. To support watchdog, see watchdog_setup for details.

Options

pgpool_setup accepts the following command-line arguments:

-m mode

Specifies the running mode. mode can be r (native replication mode), s (streaming replication mode), or n (raw mode). If this is omitted, s is used.

-n num_clusters

Specifies the number of PostgreSQL installations. If this is omitted, 2 is used.

-p base_port

Specify the base port number used by Pgpool-II and PostgreSQL. Pgpool-II port is base_port. pcp port is base_port + 1. The first PostgreSQL node's port is base_port + 2, second PostgreSQL node's port is base_port + 3 and so on.

If -pg option is specified, the first PostgreSQL node's port is assigned to pg_base_port, the second PostgreSQL node's port is pg_base_port + 1 and so on.

If this is omitted, 11000 is used.

-pg pg_base_port

Specify the base port number used by PostgreSQL. The first PostgreSQL node's port is base_port + 2, second PostgreSQL node's port is base_port + 3 and so on.

If this is omitted, base_port +2 is used.

--no-stop

Do not stop pgpool and PostgreSQL after the work.

-d

Start pgpool with debug mode.

Environment variables

pgpool_setup recognizes following environment variables:

PGPOOL_INSTALL_DIR

Specifies the Pgpool-II installation directory. Pgpool-II binaries is expected to be placed under PGPOOL_INSTALL_DIR/bin and pgpool.conf and pool_hba.conf etc. are expected to be placed under PGPOOL_INSTALL_DIR/etc. The default is /usr/local.

PGPOOLDIR

Specifies the path to Pgpool-II configuration files. The default is PGPOOL_INSTALL_DIR/etc.

PGBIN

Specifies the path to PostgreSQL commands such as initdb, pg_ctl and psql. The default is /usr/local/pgsql/bin.

PGLIB

Specifies the path to PostgreSQL shared libraries. The default is /usr/local/pgsql/lib.

PGSOCKET_DIR

Specifies the path to Unix socket directory. The default is /tmp.

INITDBARG

Specifies the arguments for initdb command. The default is "--no-locale -E UTF_8".

Example

$ pgpool_setup
Satrting set up in streaming replication mode
creating startall and shutdownall
creating failover script
creating database cluster /home/t-ishii/tmp/test/data0...done.
update postgreql.conf
creating pgpool_remote_start
creating basebackup.sh
creating recovery.conf
creating database cluster /home/t-ishii/tmp/test/data1...done.
update postgreql.conf
creating pgpool_remote_start
creating basebackup.sh
creating recovery.conf
temporarily start data0 cluster to create extensions
temporarily start pgpool-II to create standby nodes
INFO:  unrecognized configuration parameter "debug_level"
 node_id | hostname | port  | status | lb_weight |  role   | select_cnt | load_balance_node | replication_delay
---------+----------+-------+--------+-----------+---------+------------+-------------------+-------------------
 0       | /tmp     | 11002 | up     | 0.500000  | primary | 0          | true              | 0
 1       | /tmp     | 11003 | down   | 0.500000  | standby | 0          | false             | 0
(2 rows)

recovery node 1...pcp_recovery_node -- Command Successful
done.
creating follow master script
Pager usage is off.
 node_id | hostname | port  | status | lb_weight |  role   | select_cnt | load_balance_node | replication_delay
---------+----------+-------+--------+-----------+---------+------------+-------------------+-------------------
 0       | /tmp     | 11002 | up     | 0.500000  | primary | 0          | false             | 0
 1       | /tmp     | 11003 | up     | 0.500000  | standby | 0          | true              | 0
(2 rows)

shutdown all

pgpool-II setting for streaming replication mode is done.
To start the whole system, use /home/t-ishii/tmp/test/startall.
To shutdown the whole system, use /home/t-ishii/tmp/test/shutdownall.
pcp command user name is "t-ishii", password is "t-ishii".
Each PostgreSQL, pgpool-II and pcp port is as follows:
#1 port is 11002
#2 port is 11003
pgpool port is 11000
pcp port is 11001
The info above is in README.port.

$ ls
README.port  bashrc.ports  data1  log	   pgpool_reload     run	  startall
archivedir   data0	   etc	  pcppass  pgpool_setup.log  shutdownall

$ ./startall
waiting for server to start....11840 2016-08-18 13:08:51 JST LOG:  redirecting log output to logging collector process
11840 2016-08-18 13:08:51 JST HINT:  Future log output will appear in directory "pg_log".
 done
server started
waiting for server to start....11853 2016-08-18 13:08:52 JST LOG:  redirecting log output to logging collector process
11853 2016-08-18 13:08:52 JST HINT:  Future log output will appear in directory "pg_log".
 done
server started
$ psql -p 11000 test
Pager usage is off.
psql (9.5.4)
Type "help" for help.

test=# show pool_nodes;
 node_id | hostname | port  | status | lb_weight |  role   | select_cnt | load_balance_node | replication_delay
---------+----------+-------+--------+-----------+---------+------------+-------------------+-------------------
 0       | /tmp     | 11002 | up     | 0.500000  | primary | 0          | false             | 0
 1       | /tmp     | 11003 | up     | 0.500000  | standby | 0          | true              | 0
(2 rows)