Why is it impossible to log in the VCS?

Symptoms

During login the VCS, authorization window is displayed and it's impossible to login.

Cause

Mostly it means the disk space is full and it needs to be cleaned.

Resolution

To clean the disk space, you need to do the following:

• Delete old files from "./tmp".
• Delete old logs (older than 1 year) from "./var/log_archive".
• Archive large current logs in "./var/log".