Errors observed during Zabbix version upgrade from 3.4.9 to 4.4.5
Dear All,
We received numerous errors in server log the moment we upgrade Zabbix Application server
Zabbix_server.log
Host:vm_memory_size[pused]" changed: Cannot evaluate expression: "Cannot evaluate function "last()": not enough data.".
Host:vm_memory_size[pfree]" became not supported: Cannot evaluate expression: "Cannot evaluate function "last()": not enough data."
Host:vm_memory_size[pfree]" became not supported: Cannot evaluate expression: "Cannot evaluate function "last()": not enough data.".
Host:cpu.calc.util" became not supported: Cannot evaluate expression: "Cannot evaluate function "last()": not enough data.".
Also, when during Upgrade Zabbix Database activity Do we need to run below command on DB Server having data from previous Zabbix version 3.4.9
zcat /usr/share/doc/zabbix-server-mysql*/create.sql.gz | mysql -u -p zabbixdb -hxx.xx.xx.xx
or just to run the new version file zabbix-server-mysql & it will upgrade schema automatically
In Proxy server installation from previous version, whether we need to create new db or proxy or use existing db.
In Upgrade we used new db instance but after upgrade, we observed we were getting multiple error" Host not found" in proxy log files
We received numerous errors in server log the moment we upgrade Zabbix Application server
Zabbix_server.log
Host:vm_memory_size[pused]" changed: Cannot evaluate expression: "Cannot evaluate function "last()": not enough data.".
Host:vm_memory_size[pfree]" became not supported: Cannot evaluate expression: "Cannot evaluate function "last()": not enough data."
Host:vm_memory_size[pfree]" became not supported: Cannot evaluate expression: "Cannot evaluate function "last()": not enough data.".
Host:cpu.calc.util" became not supported: Cannot evaluate expression: "Cannot evaluate function "last()": not enough data.".
Also, when during Upgrade Zabbix Database activity Do we need to run below command on DB Server having data from previous Zabbix version 3.4.9
zcat /usr/share/doc/zabbix-server-mysql*/create.sql.gz | mysql -u -p zabbixdb -hxx.xx.xx.xx
or just to run the new version file zabbix-server-mysql & it will upgrade schema automatically
In Proxy server installation from previous version, whether we need to create new db or proxy or use existing db.
In Upgrade we used new db instance but after upgrade, we observed we were getting multiple error" Host not found" in proxy log files