One common question we often hear on IRC is: how to make hosts depend on their proxy. The problem being that when a proxy is unable to send data to the server for a long enough time, the nodata() triggers on hosts monitored by the proxy start to fire.
A possible end result is illustrated perfectly by quoting one of the users in #zabbix @ irc.freenode.net
<someuser> lets say one of my large proxies falls behind. I can receive like 2k mails.
Obviously, receiving such a quantity of notifications doesn’t help you correct the issue.
Continue reading Proxy dependency using the API
So you had a cluster monitored. As is common with clusters, you wanted to have some cluster-wide parameter adding. Average CPU load, number of nodes online – something not tied to a single cluster node, thus you created a special host to denote the whole cluster. Then you went to that host, clicked “Create trigger”, specified all the items on individual cluster hosts, clicked “Add”… and the trigger was not there. Mysteriously missing.
Oh, wait. That trigger actually appeared on all the cluster hosts. Is this a bug?
Continue reading Created a trigger and it disappeared? Read on for a revelation!