Plesk interface on Linux server is not accessible: Read-only file system

Symptoms

• On a Linux server, the Plesk interface is not accessible.

• plesk commands, as well as file creation with utility touch, fail with the following errors:

  # plesk login
  ...
  Error: must run as root.
  exit status 1

  ---

  # touch /var/test
  touch: cannot touch ‘/var/test’: Read-only file system

  ---

  signal: bus error (core dumped)

• Root or var partition is mounted as read-only:

  # mount
  /dev/mapper/vg1-lv3 on / type ext4 (ro,errors=remount-ro)

  ---

  # mount
  /dev/mapper/vg00-var on /var type ext4 (ro,noatime,quota,usrquota,data=ordered)

Cause

The server's root partition is mounted as read-only.

Resolution

Contact a system administrator or the provider of the server for assistance with remounting the partition as read-write.