MySQL Job failed to start

Question

I\'m on Kubuntu 12.04, and after installing mysql via an apt-get (mysql ver: 5.5.35), i\'m trying to start mysql service, but I got this error:

sudo servi

Answer 1

Reinstallation will works because it will reset all the value to default. It is better to find what the real culprits (my.cnf editing mistake does happens, e.g. bad/outdated parameter suggestion during mysql tuning.)

Here is the mysql diagnosis if you suspect some value is wrong inside my.cnf : Run the mysqld to show you the results.

sudo -u mysql  mysqld 

Afterwards, fix all the my.cnf key error that pop out from the screen until mysqld startup successfully.

Then restart it using

sudo service mysql restart

Answer 2

In my case:

• restart server
• restart mysql
• create .socket in directory

Answer 3

In most cases, just purging the mysql-server package and re-installing it will do the job.

Run,

sudo apt-get purge mysql-server-5.1 mysql-common

followed by

sudo apt-get install mysql-server

Answer 4

Check the file permissions, if edited

Fail:

$ sudo chmod 776 /etc/mysql/my.cnf
$ sudo service mysql restart
mysql stop/waiting
start: Job failed to start

Ok:

$ sudo chmod 774 /etc/mysql/my.cnf
$ sudo service mysql restart
stop: Unknown instance:
mysql start/running, process 9564

Answer 5

The given solution requires enough free HDD, the actual problem was the HDD memory shortage. So If you don't have an alternative server or free disk space, you need some other alternative.

I faced this error with my production server (Linode VPS) when I was running a bulk download into MySQL. Its not a proper solution but VERY QUICK FIX, which we often need in production to bring things UP FAST.

1. Resize our VPS Server to higher Hard Disk size
2. Start MySQL, it works.
3. Login to your MySQL instance and make appropriate adjustments that caused this error (e.g. remove some records, table, or take DB backup to your local machine that are not required at production, etc. After all you know, what caused this issue.)
4. Downgrade your VPS Server to previous package you was already using

Answer 6

In my case, i do:

1. sudo nano /etc/mysql/my.cnf
2. search for bind names and IPs
3. remove the specific, and let only localhost 127.0.0.1 and the hostname