Using OMD it is possible to setup a working monitoring for checking infrastructure setups just within minutes. But - what monitored OMD-relevant processes? Usually, a OMD site consists of multiple pre-configured services such as: Icinga or Nagios Apache web server Cron service rrdcached (for RRD graphs) npcd …

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When configuring and testing a Python Icinga plugin within an OMD site, I stumbled upon the following error recently: 1TypeError: 'frozenset' object is not callable After some tests on other systems, I found out, that the Python library hashlib shipped with OMD seems to be faulty. Copying the system-wide library into …

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If you use Open Monitoring Distribution (OMD) and don't want to setup a full-fledged Postfix or Sendmail service (e.g. because it is a test system) you might want to have a look at the alternative tool ssmtp for relaying mails to an external mail server. The tool is only recommend if you don't need any local mail …

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Hint: The following issue has been fixed by a RHEL / CentOS patch (util-linux-ng) - just update your system! If you want to install Open Monitoring Distribution on RHEL or CentOS 6.4, you might have the problem that creating sites isn't working as expected: 1# omd create test 2Adding /omd/sites/test/tmp to /etc/fstab. …

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