The "Disk quota exceeded at cpanel.pl" error

Symptoms

The following error may occur during account management:

Could not create unix domain socket at /home/cpuser/.cpanel/live-engine-connector-XxXxxxXXx_.sock: Disk quota exceeded at cpanel.pl line 4473.

Description 

The error suggests that the user in question has reached their disk space or inode quota.

Workaround

We recommend starting with the "quota" command when investigating quota issues. The following is an example:

quota -svu cpuser
Disk quotas for user cpuser (uid 1008):
    Filesystem  space  quota  limit  grace  files  quota  limit  grace
      /dev/vda1  65020K      0K      0K            3606      0      0

The columns split between disk used, and inodes used. The "space" column shows how much disk space is used, and "files" is for inodes. Use this data to determine whether the user requires more disk space, or if they need more inodes allocated to their account.

Another option is to review the server's current disk space or inode utilization. To do so, the administrator can execute:

df -h ; df -i
Filesystem Size Used Avail Use% Mounted on
devtmpfs 912M 0 912M 0% /dev
tmpfs 919M 0 919M 0% /dev/shm
tmpfs 919M 97M 823M 11% /run
tmpfs 919M 0 919M 0% /sys/fs/cgroup
/dev/vda1 40G 27G 14G 68% /
/dev/loop0 1.5G 2.4M 1.4G 1% /tmp
tmpfs 184M 0 184M 0% /run/user/0
Filesystem Inodes IUsed IFree IUse% Mounted on
devtmpfs 233263 387 232876 1% /dev
tmpfs 235259 1 235258 1% /dev/shm
tmpfs 235259 712 234547 1% /run
tmpfs 235259 7 235252 1% /sys/fs/cgroup
/dev/vda1 20970944 363764 20607180 2% /
/dev/loop0 99424 31 99393 1% /tmp
tmpfs 235259 1 235258 1% /run/user/0

The command will return the disk space utilization of the server, as well as current inode usage. The output of the command will assist with determining where disk allotments are insufficient, such that the administrator can address these issues accordingly.