Peer authentication failed for user

FATAL: Peer authentication failed for user 'XXX'

• 操做系統：CentOS 7.5
• PostgreSQL版本：10.4

\c - XXX 切換user時，提示FATAL: Peer authentication failed for user 'XXX' 緣由是PostgreSQL配置文件/var/lib/pgsql/10/data/pg_hba.conf中，local的METHOD爲peer，

# TYPE  DATABASE        USER            ADDRESS                 METHOD

# "local" is for Unix domain socket connections only
local   all             all                                     peer

而正如提示信息，「Peer authentication failed for user 'XXX'」，因此把peer改爲md5後，重啓服務便可。

# TYPE  DATABASE        USER            ADDRESS                 METHOD

# "local" is for Unix domain socket connections only
local   all             all                                     md5

重啓服務命令：systemctl restart postgresql-10