PG Install Parameters

Parameters about how to install postgres on provisioned nodes

The PG Install section is responsible for completing the installation of all PostgreSQL dependencies on a machine with the base software.

You can configure the name, ID, permissions, and access of the database superuser, configure the sources used for the installation, configure the installation address, the version to be installed, and the required packages and extension plugins.

You can specify the software version to be installed via pg_version and override it at the cluster level to install different database versions for different clusters.

Overview

#------------------------------------------------------------------------------
# POSTGRES INSTALLATION
#------------------------------------------------------------------------------
pg_dbsu
pg_dbsu_uid
pg_dbsu_sudo
pg_dbsu_home
pg_dbsu_ssh_exchange
pg_version
pgdg_repo
pg_add_repo
pg_bin_dir
pg_packages
pg_extensions

Defaults

#------------------------------------------------------------------------------
# POSTGRES INSTALLATION
#------------------------------------------------------------------------------
# - dbsu - #
pg_dbsu: postgres                             # os user for database, postgres by default (change it is not recommended!)
pg_dbsu_uid: 26                               # os dbsu uid and gid, 26 for default postgres users and groups
pg_dbsu_sudo: limit                           # none|limit|all|nopass (Privilege for dbsu, limit is recommended)
pg_dbsu_home: /var/lib/pgsql                  # postgresql binary
pg_dbsu_ssh_exchange: false                   # exchange ssh key among same cluster

# - postgres packages - #
pg_version: 13                                # default postgresql version
pgdg_repo: false                              # use official pgdg yum repo (disable if you have local mirror)
pg_add_repo: false                            # add postgres related repo before install (useful if you want a simple install)
pg_bin_dir: /usr/pgsql/bin                    # postgres binary dir
pg_packages:
  - postgresql${pg_version}*
  - postgis31_${pg_version}*
  - pgbouncer patroni pg_exporter pgbadger
  - patroni patroni-consul patroni-etcd pgbouncer pgbadger pg_activity
  - python3 python3-psycopg2 python36-requests python3-etcd python3-consul
  - python36-urllib3 python36-idna python36-pyOpenSSL python36-cryptography

pg_extensions:
  - pg_repack${pg_version} pg_qualstats${pg_version} pg_stat_kcache${pg_version} wal2json${pg_version}
  # - ogr_fdw${pg_version} mysql_fdw_${pg_version} redis_fdw_${pg_version} mongo_fdw${pg_version} hdfs_fdw_${pg_version}
  # - count_distinct${version}  ddlx_${version}  geoip${version}  orafce${version}                                   # popular features
  # - hypopg_${version}  ip4r${version}  jsquery_${version}  logerrors_${version}  periods_${version}  pg_auto_failover_${version}  pg_catcheck${version}
  # - pg_fkpart${version}  pg_jobmon${version}  pg_partman${version}  pg_prioritize_${version}  pg_track_settings${version}  pgaudit15_${version}
  # - pgcryptokey${version}  pgexportdoc${version}  pgimportdoc${version}  pgmemcache-${version}  pgmp${version}  pgq-${version}  pgquarrel pgrouting_${version}
  # - pguint${version}  pguri${version}  prefix${version}   safeupdate_${version}  semver${version}   table_version${version}  tdigest${version}


Reference

pg_dbsu

数据库默认使用的操作系统用户(超级用户)的用户名称,默认为postgres

pg_dbsu_uid

数据库默认使用的操作系统用户(超级用户)的UID,默认为26

pg_dbsu_sudo

数据库超级用户的默认权限:

  • none:没有sudo权限
  • limit:有限的sudo权限,可以执行数据库相关组件的systemctl命令,默认
  • all:带有完整sudo权限,但需要密码。
  • nopass:不需要密码的完整sudo权限(不建议)

pg_dbsu_home

数据库超级用户的家目录,默认为/var/lib/pgsql

pg_dbsu_ssh_exchange

是否在执行的机器之间交换超级用户的SSH公私钥

pg_version

希望安装的PostgreSQL版本,默认为13

建议在集群级别按需覆盖此变量。

pgdg_repo

标记,是否使用PostgreSQL官方源?

pg_add_repo

如果使用,则会在安装PostgreSQL前添加PGDG的官方源

启用此选项,则可以在未执行基础设施初始化的前提下直接执行数据库初始化,尽管可能会很慢,但对于缺少基础设施的场景尤为实用。

pg_bin_dir

PostgreSQL二进制目录

默认为/usr/pgsql/bin/,这是一个安装过程中手动创建的软连接,指向安装的具体Postgres版本目录。

例如/usr/pgsql -> /usr/pgsql-13

pg_packages

默认安装的PostgreSQL软件包

软件包中的${pg_version}会被替换为实际安装的PostgreSQL版本。

pg_extensions

需要安装的PostgreSQL扩展插件软件包

软件包中的${pg_version}会被替换为实际安装的PostgreSQL版本。

默认安装的插件包括:

pg_repack${pg_version}
pg_qualstats${pg_version}
pg_stat_kcache${pg_version}
wal2json${pg_version}

按需启用,但强烈建议安装pg_repack扩展。

Last modified 2021-02-08: update en deploy doc (c50b13b)