pg_autoctl

pg_autoctl - 控制pg_auto_failover节点

概要

pg_autoctl提供以下命令：

pg_autoctl
+ create    Create a pg_auto_failover node, or formation
+ drop      Drop a pg_auto_failover node, or formation
+ config    Manages the pg_autoctl configuration
+ show      Show pg_auto_failover information
+ enable    Enable a feature on a formation
+ disable   Disable a feature on a formation
+ get       Get a pg_auto_failover node, or formation setting
+ set       Set a pg_auto_failover node, or formation setting
+ perform   Perform an action orchestrated by the monitor
  activate  Activate a Citus worker from the Citus coordinator
  run       Run the pg_autoctl service (monitor or keeper)
  stop      signal the pg_autoctl service for it to stop
  reload    signal the pg_autoctl for it to reload its configuration
  status    Display the current status of the pg_autoctl service
  help      print help message
  version   print pg_autoctl version

pg_autoctl create
  monitor      Initialize a pg_auto_failover monitor node
  postgres     Initialize a pg_auto_failover standalone postgres node
  coordinator  Initialize a pg_auto_failover citus coordinator node
  worker       Initialize a pg_auto_failover citus worker node
  formation    Create a new formation on the pg_auto_failover monitor

pg_autoctl drop
  monitor    Drop the pg_auto_failover monitor
  node       Drop a node from the pg_auto_failover monitor
  formation  Drop a formation on the pg_auto_failover monitor

pg_autoctl config
  check  Check pg_autoctl configuration
  get    Get the value of a given pg_autoctl configuration variable
  set    Set the value of a given pg_autoctl configuration variable

pg_autoctl show
  uri            Show the postgres uri to use to connect to pg_auto_failover nodes
  events         Prints monitor's state of nodes in a given formation and group
  state          Prints monitor's state of nodes in a given formation and group
  settings       Print replication settings for a formation from the monitor
  standby-names  Prints synchronous_standby_names for a given group
  file           List pg_autoctl internal files (config, state, pid)
  systemd        Print systemd service file for this node

pg_autoctl enable
  secondary    Enable secondary nodes on a formation
  maintenance  Enable Postgres maintenance mode on this node
  ssl          Enable SSL configuration on this node
  monitor      Enable a monitor for this node to be orchestrated from

pg_autoctl disable
  secondary    Disable secondary nodes on a formation
  maintenance  Disable Postgres maintenance mode on this node
  ssl          Disable SSL configuration on this node
  monitor      Disable the monitor for this node

pg_autoctl get
+ node       get a node property from the pg_auto_failover monitor
+ formation  get a formation property from the pg_auto_failover monitor

pg_autoctl get node
  replication-quorum  get replication-quorum property from the monitor
  candidate-priority  get candidate property from the monitor

pg_autoctl get formation
  settings              get replication settings for a formation from the monitor
  number-sync-standbys  get number_sync_standbys for a formation from the monitor

pg_autoctl set
+ node       set a node property on the monitor
+ formation  set a formation property on the monitor

pg_autoctl set node
  metadata            set metadata on the monitor
  replication-quorum  set replication-quorum property on the monitor
  candidate-priority  set candidate property on the monitor

pg_autoctl set formation
  number-sync-standbys  set number-sync-standbys for a formation on the monitor

pg_autoctl perform
  failover    Perform a failover for given formation and group
  switchover  Perform a switchover for given formation and group
  promotion   Perform a failover that promotes a target node

描述

pg_autoctl工具是pg_auto_failover提供的客户端工具 创建和管理 Postgres 节点和pg_auto_failover监视器节点。这 命令由许多子命令构建而成，每个子命令都有自己的手册 页。

帮助

要获取受支持命令的完整递归列表，请使用：

pg_autoctl help

版本

要获取您正在使用的pg_autoctl版本，请使用：

pg_autoctl --version
pg_autoctl version

典型的输出是：

pg_autoctl version 1.4.2
pg_autoctl extension version 1.4
compiled with PostgreSQL 12.3 on x86_64-apple-darwin16.7.0, compiled by Apple LLVM version 8.1.0 (clang-802.0.42), 64-bit
compatible with Postgres 10, 11, 12, and 13

使用以下选项时，该版本也可作为 JSON 文档使用：--json

pg_autoctl --version --json
pg_autoctl version --json

典型的 JSON 输出是：

{
    "pg_autoctl": "1.4.2",
    "pgautofailover": "1.4",
    "pg_major": "12",
    "pg_version": "12.3",
    "pg_version_str": "PostgreSQL 12.3 on x86_64-apple-darwin16.7.0, compiled by Apple LLVM version 8.1.0 (clang-802.0.42), 64-bit",
    "pg_version_num": 120003
}

这适用于 pg_auto_failover 的 1.4.2 版。这个特定版本的 pg_autoctl客户端工具已使用 PostgreSQL 编译 12.3 并与 Postgres 10、11、12 和 13 兼容。libpq

环境

PG_AUTOCTL_DEBUG

当此环境变量设置为（任何内容）时，则允许更多命令。小心使用，这将打开摧毁你的能力 生产集群。pg_autoctl

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