Zabbix Handy Tips: Preventing downtimes with the Zabbix HA cluster

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Zabbix Handy Tips - is byte-sized news for busy techies, focused on one particular topic. In this video, we will deploy a Zabbix server High availability cluster by using the native Zabbix server HA cluster functionality.

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I understood the video very well, I have doubts because I have a domain and my ip is pointed to it, if the main machine goes down how will the Cluster work pointed to that domain?

FelipeLyp
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How to use a central database between the 2 nodes ?
Example : 2 VM with a database on each one, what do we need to configure to make both nodes communicate

gravel-demi-sel
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I do not find these instructions clear enough. How do the two nodes become aware of each other if you do not tell either where to look for the other?
I just tried to follow this guide, and my nodes seem just as confused as I am. The "sudo zabbix_server -R ha_status" command only list a single machine on both nodes. I even tried to put in the IP to node 2 in the config of node 1, and vice versa... still no luck.

Should they be using the same database or what?

FatLingon