Just did an apt-get update && apt-get upgrade on Debian 7 and now it's saying
Setting up mysql-server-5.5 (5.5.40-0+wheezy1) ... [ ok ] Stopping MySQL database server: mysqld. [FAIL] Starting MySQL database server: mysqld . . . . . . . . . . . . . . failed! invoke-rc.d: initscript mysql, action "start" failed. dpkg: error processing mysql-server-5.5 (--configure): subprocess installed post-installation script returned error exit status 1 dpkg: dependency problems prevent configuration of mysql-server: mysql-server depends on mysql-server-5.5; however: Package mysql-server-5.5 is not configured yet. dpkg: error processing mysql-server (--configure): dependency problems - leaving unconfigured Errors were encountered while processing: mysql-server-5.5 mysql-server E: Sub-process /usr/bin/dpkg returned an error code (1)
I tried dpkg-reconfigure mysql-server-5.5 but it just says /usr/sbin/dpkg-reconfigure: mysql-server-5.5 is broken or not fully installed
It was working fine before I upgraded, now I can't get MySQL to start at all.