I am using MySQL v5.1 on Ubuntu machine.
MySQL on my machine used to work. (Running mysql -u root gave me the MySQL command line.)
This afternoon, I did the following thing:
1. check active process related to 'mysql' by run:
$ ps aux | grep 'mysql'
mysql 1457 3.3 1.3 130044 27076 ? Ssl 16:22 0:43 /usr/sbin/mysql
2. I saw from above output the PID of the mysql process is 1457, so I killed it with:
$ sudo kill 1457
3. now, if I run $ mysql -u root , I get an error:
ERROR 2002 (HY000): Can't connect to local MySQL server through socket '/var/run/mysqld/mysqld.sock' (2)
which is reasonable since I killed the process.
How can I have my MySQL server back up and running again after I killed it?
I tried to run sudo /etc/init.d/mysql start, but my MySQL server does not start. Why is that?
