‘service postgresql start’无法在Fedora上启动postgres服务

我按照here的说法编辑了pg_hba.conf,但是当我尝试重启postgresql服务时,尝试失败了.下面是命令行输出,包含我可以收集的所有信息.

[root@arunpc modules]# service postgresql restart
Redirecting to /bin/systemctl  restart postgresql.service
Job failed. See system logs and 'systemctl status' for details.
[root@arunpc modules]# systemctl status postgresql.service
postgresql.service - PostgreSQL database server
      Loaded: loaded (/lib/systemd/system/postgresql.service; enabled)
      Active: failed since Sun,08 Apr 2012 21:29:06 +0530; 14s ago
     Process: 12228 ExecStop=/usr/bin/pg_ctl stop -D ${PGDATA} -s -m fast (code=exited,status=0/SUCCESS)
     Process: 12677 ExecStart=/usr/bin/pg_ctl start -D ${PGDATA} -s -o -p ${PGPORT} -w -t 300 (code=exited,status=1/FAILURE)
     Process: 12672 ExecStartPre=/usr/bin/postgresql-check-db-dir ${PGDATA} (code=exited,status=0/SUCCESS)
    Main PID: 12184 (code=exited,status=0/SUCCESS)
      CGroup: name=systemd:/system/postgresql.service
[root@arunpc modules]# tail /var/log/messages
....
Apr  8 21:29:06 arunpc systemd[1]: postgresql.service: control process exited,code=exited status=1
Apr  8 21:29:06 arunpc systemd[1]: Unit postgresql.service entered failed state.
Apr  8 21:29:06 arunpc pg_ctl[12677]: pg_ctl: could not start server
Apr  8 21:29:06 arunpc pg_ctl[12677]: Examine the log output.

FWIW,这是使用的配置文件(pg_hba.conf)：

# TYPE  DATABASE        USER            ADDRESS                 METHOD

# "local" is for Unix domain socket connections only
local   all             postgres                                ident sameuser
local   all             all                                     ident sameuser
# IPv4 local connections:
host    all             all             127.0.0.1               password
# IPv6 local connections:
host    all             all             ::1                     password

这可能是什么错误？在编辑之前它曾经工作正常(因为这是一台开发机器,我出色地没有做任何备份).

我还想得到更详细的日志输出. / var / log / messages文件中的日志消息确实要求我“检查日志输出” – 这将是哪个日志输出？我可以采取哪些其他故障排除步骤？

提前谢谢了！