Mysql 服务器无法启动 - 没有日志

Question

重启后，mysql 不会启动。sudo service mysql start给出start: Job failed to start并且日志是空的，所以我不知道从哪里开始。我很确定权限问题得到了解决。

编辑：
所有磁盘至少有 1G 的空间，并sh -x /etc/init.d/mysql start给我：

+ set -e
+ basename /etc/init.d/mysql
+ INITSCRIPT=mysql
+ JOB=mysql
+ [ mysql = upstart-job ]
+ [ -z start ]
+ COMMAND=start
+ shift
+ [ -z  ]
+ ECHO=echo
+ echo Rather than invoking init scripts through /etc/init.d, use the service(8)
Rather than invoking init scripts through /etc/init.d, use the service(8)
+ echo utility, e.g. service mysql start
utility, e.g. service mysql start
+ echo

+ echo Since the script you are attempting to invoke has been converted to an
Since the script you are attempting to invoke has been converted to an
+ echo Upstart job, you may also use the start(8) utility, e.g. start mysql
Upstart job, you may also use the start(8) utility, e.g. start mysql
+ grep -q  start/
+ status mysql
+ [ -z  ]
+ [ start = stop ]
+ [ -n  ]
+ start mysql
start: Rejected send message, 1 matched rules; type="method_call", sender=":1.105" (uid=1000 pid=3208 comm="start mysql ") interface="com.ubuntu.Upstart0_6.Job" member="Start" error name="(unset)" requested_reply="0" destination="com.ubuntu.Upstart" (uid=0 pid=1 comm="/sbin/init")

Answer 1

该消息来自服务脚本，而不是来自 mysql。因此，您必须查看脚本并找出失败的位置/原因。

通过调用 来做到这一点sh -x /etc/init.d/mysqld start。

注意：在某些问题上，比如这个问题，我没有看到任何“添加评论”。我只能选择添加答案。我怎样才能添加评论？