Zabbix Mssql Failed To Fetch Info Data -or No Data For 30m-

From the Zabbix server or proxy:

Or worse:

To confirm the fix, perform a manual query using zabbix_get from the Zabbix Server machine. This bypasses the frontend and allows immediate debugging. zabbix mssql failed to fetch info data -or no data for 30m-

Test if the Zabbix server/proxy can actually reach the database using isql from the command line: From the Zabbix server or proxy: Or worse:

If you monitor dozens of SQL Server instances per agent, the default polling may collapse. the default polling may collapse.