Error running MySQL Server

Question

Have following error:

skydos@skydos-laptop:/$ service mysql start
start: Rejected send message, 1 matched rules; 
        type="method_call", 
        sender=":1.41"     (uid=1000 pid=1827 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"))
skydos@skydos-laptop:/$ 

How to solve this problem?

More info:

 skydos@skydos-laptop:/$ sudo service mysql start
   start: Job is already running: mysql
   skydos@skydos-laptop:/$ pidof mysql
   skydos@skydos-laptop:/$ pidof mysqld
   skydos@skydos-laptop:/$ htop
   skydos@skydos-laptop:/$ sudo service mysql start
   start: Job is already running: mysql

Answer 1

尝试以root身份运行service命令（例如sudo）。