Apache web configuration files are not generated: No space left on device

Symptoms

Apache web configuration files are not generated, and the below error occurs on Plesk Home page:

New configuration files for the Apache web server were not created due to the errors in configuration templates: cat: write error: No space left on device Error writing to /etc/httpd/conf/plesk.conf.d/webmails/roundcube/domain.com_webmail.conf.8CK2J8 . Detailed error descriptions were sent to you by email. Please resolve the issues and click here to generate broken configuration files once again or here to generate all configuration files.

Disk space check shows that root partition is fully used:

# df -h
Filesystem                               Size  Used Avail Use% Mounted on
/dev/mapper/vg_datashare-lv_root         9.7G  9.6G     0 100% /
tmpfs                                    3.9G   92K  3.9G   1% /dev/shm
/dev/sda1                                485M   63M  397M  14% /boot
/dev/mapper/vg_datashare-lv_tmp          985M   19M  917M   2% /tmp
/dev/mapper/vg_datashare-lv_var          37G    25G  9.8G  72% /var

Cause

The issue caused by insufficient disk space on a mounted partition.

Resolution

1. Increase or free up disk space on the corresponding partition.

2. Rebuild web configuration files with the following command:

   # /usr/local/psa/admin/bin/httpdmng --reconfigure-all