Error establishing a database connection without heavy load
Usually my droplet is using 25-30% of the memory, CPU. But sometimes it was increase nearly 100%. Im using a 4gb droplet
then it kill the database and led to Error establishing a database connection.
No increase in the site's traffic.
Then I restarted the mysql server and it was good for a while, then the error repeated again.
What would be the problem? And how can i check the server log
im using wordpress, centos and im just a non-tech newbie.
Thanks for all your help.