Today I faced a strange issue on one of the test server. Server was set to Runlevel 5. But it didnt work and system changed to runlevel 3.
It was showing "init: Id "x" respawning too fast: disabled for 5 minutes" and also on Text Console it was showing
(nologin) root :
Even though no one changed the password and i insert the correct password still it was not accepting and password and jumped back to prompt.
So then i reboot the system to Single user mode but it was just jumping to level 3 and kept asking for password. So I had to reinstall the system.
But what might the cause these errors.
1) init: Id "x" respawning too fast: disabled for 5 minutes --- I believe I can solve it 2) (nologin) root --- This is tricky one