Resolve nagios issues for dev.bitmask.net
see the QA checklist: https://pad.riseup.net/p/MS3x9puUuzP8
(from redmine: created on 2014-11-26, closed on 2014-12-11, relates #6443, relates #6487, blocks #6456 (closed))
see the QA checklist: https://pad.riseup.net/p/MS3x9puUuzP8
(from redmine: created on 2014-11-26, closed on 2014-12-11, relates #6443, relates #6487, blocks #6456 (closed))