Today, I temptatively upgraded my raspery pi and EmonCMS (within the application using the dedicated upgrade buttons). A subsequent check of the database check resulted in an error (I forgot the details). After a few login out an reboot of the raspberry, I am in a situation where I cannot log anymore: getting the error mesage Can’t connect to MySQL server on ‘127.0.0.1’. The issue seems to be related to the MySQL service that does not start. I tried to start manually bit it immediately fails. Ath this point I would like to know if
- what are the possible reason for MySQL service not starting
- possible solutions to solve the proble
- a way to backup the MySQL database (and later recover the data) without having the service running.
May thanks for pointers and help