路径需要改一改，我是从源码编译后，把data目录放于/db/pgsql/data下

/lib/systemd/system/postgresql.service

[Unit]Description=PostgreSQLAfter=syslog.target network.target  [Service]Type=forkingExecStart=ExecStart=/usr/local/pgsql/bin/pg_ctl -D /db/pgsql/data startExecStop=/usr/local/pgsql/bin/pg_ctl -D /db/pgsql/data stopRestart=always TimeoutSec=45sRestart=on-failureUser=postgresGroup=postgres[Install]WantedBy=multi-user.target