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    postgresql数据库怎么重启

    silencementsilencement2020-02-21 18:57:27原创4853

    启动一个postgres最简单的方法是使用postgres命令(执行前请确认data目录已经被初始化完成)

    服务器必须由PostgreSQL用户帐户运行,而不是由root用户或任何其他用户运行,所以先确认切换为postgres用户

    推荐:postgrsql教程

    postgres@me:/usr/local/pgsql$ ./bin/postgres -D ./data

    这个命令使得数据库在前台运行,为了使得运维数据库更加方便,包装程序pg_ctl将简化一些操作,先看看pg_ctl的帮助信息:

    postgres@me:/usr/local/pgsql$ ./bin/pg_ctl --help
    pg_ctl is a utility to initialize, start, stop, or control a PostgreSQL server.
    
    Usage:
      pg_ctl init[db] [-D DATADIR] [-s] [-o OPTIONS]
      pg_ctl start    [-D DATADIR] [-l FILENAME] [-W] [-t SECS] [-s]
                      [-o OPTIONS] [-p PATH] [-c]
      pg_ctl stop     [-D DATADIR] [-m SHUTDOWN-MODE] [-W] [-t SECS] [-s]
      pg_ctl restart  [-D DATADIR] [-m SHUTDOWN-MODE] [-W] [-t SECS] [-s]
                      [-o OPTIONS] [-c]
      pg_ctl reload   [-D DATADIR] [-s]
      pg_ctl status   [-D DATADIR]
      pg_ctl promote  [-D DATADIR] [-W] [-t SECS] [-s]
      pg_ctl kill     SIGNALNAME PID
    
    Common options:
      -D, --pgdata=DATADIR   location of the database storage area
      -s, --silent           only print errors, no informational messages
      -t, --timeout=SECS     seconds to wait when using -w option
      -V, --version          output version information, then exit
      -w, --wait             wait until operation completes (default)
      -W, --no-wait          do not wait until operation completes
      -?, --help             show this help, then exit
    If the -D option is omitted, the environment variable PGDATA is used.
    
    Options for start or restart:
      -c, --core-files       allow postgres to produce core files
      -l, --log=FILENAME     write (or append) server log to FILENAME
      -o, --options=OPTIONS  command line options to pass to postgres
                             (PostgreSQL server executable) or initdb
      -p PATH-TO-POSTGRES    normally not necessary
    
    Options for stop or restart:
      -m, --mode=MODE        MODE can be "smart", "fast", or "immediate"
    
    Shutdown modes are:
      smart       quit after all clients have disconnected
      fast        quit directly, with proper shutdown (default)
      immediate   quit without complete shutdown; will lead to recovery on restart
    
    Allowed signal names for kill:
      ABRT HUP INT QUIT TERM USR1 USR2

    一句话描述:pg_ctl是一个集初始化,启动,停止,或者控制PostgreSQL服务器于一体的实用程序。

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    专题推荐:postgresql
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