Critical Error: [0100] - Unable to connect or authenticate to the Sentora database (s

[miron jahan]

from today im getting this message... i cant access to panel and sites that was hosted. 

Critical Error: [0100] - Unable to connect or authenticate to the Sentora database (sentora_core).

We advice that you contact the server administrator to ensure that the database server is online and that the correct connection parameters are being used.

also look like mysql service not working and cant start it.

root@16300:~# service mysqld start
mysqld: unrecognized service
root@16300:~# service mysql start
start: Job failed to start

=================
root@16300:~# mysql -u root -p
Enter password:
ERROR 2002 (HY000): Can't connect to local MySQL server through socket '/var/run/mysqld/mysqld.sock' (2)


How can i fix this problem? Please help me

[Me.B]

check disk space and mysql logs

[Websea.in]

Are you using centos 7 ? Cloud servers?

I get this problem in my cloud servers at least 3 to 4 times in a week. However, there is a solution.

login to SSH

type sudo bash

Then type/copy paste

systemctl start mariadb.service

error establishing database will be solved instantly.