Root filesystem is readonly
When Ubuntu is unable to write to disk, it switches the filesystem to be read only. This could be caused by a cloud hosting provider having problems with their Storage Area Network (SAN). It is possible for a machine to operate in a degraded way with a read only file system so this check serves as an early warning if that happens.
The machine will need to have a filesystem check forced on reboot. To do this, you will need access to the vCloud Director instance for the environment. If you do on-call, you should have access to the vCloud Production environment.
In the vCloud Director instance:
- Find the affected machine
- Click on the ‘console’ image to bring up a web based console
- Click the 'reset’ icon in the top bar and then click to focus on the console
- Press the 'f’ key when prompted (or repeatedly if there’s no output) to force a filesystem check.