on host labstore1001 - the icinga check called " Last cleanup of snapshots in the labstore vg"
says the NRPE command it is trying to execute on the host does not exist anymore:
NRPE: Command 'check_cleanup-snapshots-labstore-state' not defined
https://icinga.wikimedia.org/cgi-bin/icinga/extinfo.cgi?type=1&host=labstore1001