我正在尝试添加一个新用户，如下所示：
sudo -u postgres createuser -D -A -P onemoreadmin 我正在input密码。
然后，我得到以下错误：
createuser: could not connect to database postgres: could not connect to server: No such file or directory Is the server running locally and accepting connections on Unix domain socket "/var/pgsql_socket/.s.PGSQL.5432"?
尝试下面的代码
sudo -u postgres createuser -D -A -P onemoreadmin -h localhost
-h – >主机名