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在带有 Postgres 12 服务器的 ubuntu 20.04 中，HD 出现问题后，Postgres 停止工作。下面是我的测试和解决问题的尝试：

~$ psql\npsql: error: could not connect to server: No such file or directory\n        Is the server running locally and accepting\n        connections on Unix domain socket "/var/run/postgresql/.s.PGSQL.5432"?\n

当我尝试 systemctl 时：

$ sudo systemctl start postgresql@12-main\nJob for postgresql@12-main.service failed because the service did not take the steps required by its unit configuration.\nSee "systemctl status postgresql@12-main.service" and "journalctl -xe" for details.\n

systemctl status postgresql@12-main.service 的输出：

$ systemctl status postgresql@12-main.service\n\xe2\x97\x8f …