How to find when MySQL/MariaDB server was started

We will show you here how you can get the MySQL/MariaDB server started date on a CentOS server. This can be useful for server statistics etc.

1. Use the select now() – interval variable_value second from information_schema.global_status where variable_name=’Uptime’; command at the mysql prompt.

root@web [~]# mysql
Welcome to the MariaDB monitor.  Commands end with ; or \g.
Your MariaDB connection id is 54690
Server version: 10.1.25-MariaDB MariaDB Server

Copyright (c) 2000, 2017, Oracle, MariaDB Corporation Ab and others.

Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.

MariaDB [(none)]> select now() - interval variable_value second as 'MySQL started on' from information_schema.global_status where variable_name='Uptime';
+----------------------------+
| MySQL started on           |
+----------------------------+
| 2017-08-12 02:14:21.000000 |
+----------------------------+
1 row in set (0.00 sec)

MariaDB [(none)]> quit
Bye
root@web [~]#

2. Use the mysqladmin utility with the command mysqladmin ver|grep Uptime

root@web [~]# mysqladmin ver|grep Uptime
Uptime:                 6 days 9 hours 54 min 5 sec
root@web [~]#

3. Use the operating system service command service mysqld status | grep running

root@web [~]# service mysqld status | grep running
Redirecting to /bin/systemctl status  mysqld.service
   Active: active (running) since Sat 2017-08-12 02:14:22 EDT; 6 days ago
root@web [~]#
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