Error: No space left on device when starting/stopping services only
Sometimes we may face an error like this on starting/stopping services even if there is enough space in the disk.
This error is due to too few watchers for inotify.
The problem can be fixed by increasing the watchers.
Step1: Open the file '/etc/sysctl.conf adding'.
#vi /etc/sysctl.conf adding
Step2: Update the following value.
fs.inotify.max_user_watches = 1048576
Step3: Reload the configuration.