can't start mysqld

hello
today i've got trouble with mysql, i can't login because trouble with mysql, the browser give me notification

mysqld is stopped

Trying to start mysql server, please reload browser!

Could not connect: No such file or directory

how to fix it?

You didn't supply ANY info about your server details nor log info, so it's difficult to help you.

If mysql do not work, this may be a problem from installation. Is this the first time?

You can try restart whole cwp service by command `service cwpsrv restart` or only mysql by command `service mysql restart` or `/etc/init.d/mysqld restart`.

If not, try to reinstall mysql server using command `yum reinstall mysql-server`.

after checking with tail,

tail -n 30 /var/log/mysqld.log

it tell's me

141006 12:54:47 mysqld_safe mysqld restarted
141006 12:54:47 mysqld_safe Number of processes running now: 0
141006 12:54:47 mysqld_safe mysqld restarted
141006 12:54:47  InnoDB: Initializing buffer pool, size = 8.0M
141006 12:54:47  InnoDB: Completed initialization of buffer pool
141006 12:54:48  InnoDB: Initializing buffer pool, size = 8.0M
141006 12:54:48  InnoDB: Completed initialization of buffer pool
InnoDB: Unable to lock ./ibdata1, error: 11
InnoDB: Check that you do not already have another mysqld process
InnoDB: using the same InnoDB data or log files.
141006 12:54:48  InnoDB: Retrying to lock the first data file
141006 12:54:48  InnoDB: Started; log sequence number 0 103960
141006 12:54:48 [ERROR] /usr/libexec/mysqld: Error writing file '/var/run/mysqld/mysqld.pid' (Errcode: 28)
141006 12:54:48 [ERROR] Can't start server: can't create PID file: No space left on device
141006 12:54:48 mysqld_safe Number of processes running now: 1
141006 12:54:48 mysqld_safe mysqld process hanging, pid 23371 - killed
141006 12:54:48 mysqld_safe mysqld restarted
141006 12:54:48 mysqld_safe Number of processes running now: 0
141006 12:54:48 mysqld_safe mysqld restarted
141006 12:54:48  InnoDB: Initializing buffer pool, size = 8.0M
141006 12:54:48  InnoDB: Completed initialization of buffer pool
141006 12:54:48  InnoDB: Initializing buffer pool, size = 8.0M
141006 12:54:48  InnoDB: Completed initialization of buffer pool
InnoDB: Unable to lock ./ibdata1, error: 11
InnoDB: Check that you do not already have another mysqld process
InnoDB: using the same InnoDB data or log files.
141006 12:54:48  InnoDB: Retrying to lock the first data file
141006 12:54:48  InnoDB: Started; log sequence number 0 103960
141006 12:54:48 [ERROR] /usr/libexec/mysqld: Error writing file '/var/run/mysqld/mysqld.pid' (Errcode: 28)
141006 12:54:48 [ERROR] Can't start server: can't create PID file: No space left

solved after removing some folders and file, thanks for the help 

Glad to know i forced you to use logs 

141006 12:54:48 [ERROR] Can't start server: can't create PID file: No space left

solved after removing some folders and file, thanks for the help 

Hi, which folders you remove? I have the same problem...

solved after removing some folders and file, thanks for the help 

Can you tell me which folders you remove? same problem

Filesystem            Size  Used Avail Use% Mounted on
/dev/mapper/vg_hosting-lv_root
                       50G   47G     0 100% /
tmpfs                 1.9G     0  1.9G   0% /dev/shm
/dev/sda2             477M  198M  255M  44% /boot
/dev/sda1             200M  268K  200M   1% /boot/efi
/dev/mapper/vg_hosting-lv_home
                      864G   37G  784G   5% /home


wich folder or file can i del?

probably the best for start would be to check server logs in /var/log and /usr/local/apache/logs

solved after removing some folders and file, thanks for the help 

Can you tell me which folders you remove? same problem

I guess you ran out of disk space
You can delete all unused log files or root's email. It happened to me after few months of using

du --max-depth=1 -h /   : List folder size
find / -type f -size +100M   : Find files with the size above 100MB
ls -1 -sh   : list folder and file
du -msh Folder_Name   : Get size of a  folder