Zabbix 4.0 less than 25% free in the configuration cache

[georgehbb]

Hello,

We are getting this trigger. Where can we find the CacheSize field to increase the cache?
Thank you

[kloczek]

it is in server/proxy configuration file.
You need to increase this cache only if you know that you will be increasing number of monitored metric.
Configuration cache holds cached data about current list of monitored metrics.
It is good to have some headroom of free space in this cache because each new metric added to the monitoring consumes some space in this cache.
At some point if just before add new metric you will have only some scraps of the memory in that cache only on add new metrics zabbix server will be not able to allocate in that cache entries for new metrics and will stop working leaving in the server or proxy logs that ConfigCache needs to be increased.
Simple to simplify that config cache that cache is statically allocated on the start the server/proxy and after that without restart cannot be increased.