Postgres使用ALTER USER命令修改用户的密码、密码过期，锁定，解锁

原地址

使用ALTER USER命令修改用户的密码、密码过期，锁定，解锁

（1）修改用户的口令，将用户的口令修改为新的密码

highgo=#create user test with password ‘test’;

CREATEROLE

highgo=#select usename,passwd from pg_shadow;

usename | passwd

———+————————————-

highgo | md5614aeb636ab143b790547ce463ec1741

a | md5039af99d1e9a4b194e0eb800a6f8d018

b | md583aeaa4e529325e234e9c5c2e01e6c08

test | md505a671c66aefea124cc08b76ea6d30bb

(4rows)

highgo=#ALTER USER test with password ‘testnew’;

ALTERROLE

highgo=#select usename,passwd from pg_shadow;

usename | passwd

———+————————————-

highgo | md5614aeb636ab143b790547ce463ec1741

a | md5039af99d1e9a4b194e0eb800a6f8d018

b | md583aeaa4e529325e234e9c5c2e01e6c08

test | md57c56448e70f764f1ca97ceae33823c9b

(4rows)

（2）设置用户口令过期，通过设置用户过期，这样该用户在下次登录的时候就必须要修改密码。

highgo=# select usename,valuntil from pg_shadow;

usename | valuntil

———+———-

highgo |

a |

b |

test |

(4rows)

highgo=#alter user test with valid until ‘2017-4-4 12:48:00’;

ALTERROLE

highgo=#select usename,valuntil from pg_shadow;

usename | valuntil

———+————————

highgo |

a |

b |

test | 2017-04-04 12:48:00+08

(4rows)

此时远程使用test连接数据库将失败。

（3）锁定用户，将用户锁定之后，被锁定的用户是不能够再次登录到系统中。

highgo=#ALTER USER test nologin;

ALTERROLE

highgo=#\c highgo test

致命错误: 不允许角色”test”进行登录

Previousconnection kept

highgo=#

（4）解锁用户，解锁用户的锁定状态。

highgo=#ALTER USER test login;

ALTERROLE

highgo=#\c highgo test

Youare now connected to database “highgo” as user “test”.

highgo=>

原地址

使用ALTER USER命令修改用户的密码、密码过期，锁定，解锁

（1）修改用户的口令，将用户的口令修改为新的密码

highgo=#create user test with password ‘test’;

CREATEROLE

highgo=#select usename,passwd from pg_shadow;

usename | passwd

———+————————————-

highgo | md5614aeb636ab143b790547ce463ec1741

a | md5039af99d1e9a4b194e0eb800a6f8d018

b | md583aeaa4e529325e234e9c5c2e01e6c08

test | md505a671c66aefea124cc08b76ea6d30bb

(4rows)

highgo=#ALTER USER test with password ‘testnew’;

ALTERROLE

highgo=#select usename,passwd from pg_shadow;

usename | passwd

———+————————————-

highgo | md5614aeb636ab143b790547ce463ec1741

a | md5039af99d1e9a4b194e0eb800a6f8d018

b | md583aeaa4e529325e234e9c5c2e01e6c08

test | md57c56448e70f764f1ca97ceae33823c9b

(4rows)

（2）设置用户口令过期，通过设置用户过期，这样该用户在下次登录的时候就必须要修改密码。

highgo=# select usename,valuntil from pg_shadow;

usename | valuntil

———+———-

highgo |

a |

b |

test |

(4rows)

highgo=#alter user test with valid until ‘2017-4-4 12:48:00’;

ALTERROLE

highgo=#select usename,valuntil from pg_shadow;

usename | valuntil

———+————————

highgo |

a |

b |

test | 2017-04-04 12:48:00+08

(4rows)

此时远程使用test连接数据库将失败。

（3）锁定用户，将用户锁定之后，被锁定的用户是不能够再次登录到系统中。

highgo=#ALTER USER test nologin;

ALTERROLE

highgo=#\c highgo test

致命错误: 不允许角色”test”进行登录

Previousconnection kept

highgo=#

（4）解锁用户，解锁用户的锁定状态。

highgo=#ALTER USER test login;

ALTERROLE

highgo=#\c highgo test

Youare now connected to database “highgo” as user “test”.

highgo=>