If your graphs are showing with ‘graph error’ and your disk is almost full, please follow the instructions below.
Add extra disk to your VM or to your machine and type following commands with root privileges.
# display disk name fdisk -l # create partition fdisk /dev/sdb # type n enter enter enter enter w enter # means new partition, default values accept, and write out changes # extend physical volume group vgs vgextend observium-vg /dev/sdb1 # extend size in volume group and resize file system lvextend -L +19G /dev/mapper/observium--vg-root resize2fs /dev/mapper/observium--vg-root # check everything is ok df -k # now regenerate graphs that were missing cd /opt/observium php discovery.php -h all php poller.php -h all
Above assumes you are adding a second disk of 20 GB. sdb and +19G might need to change if your configuration is different.