Shulou(Shulou.com)06/02 Report--

Cause: after upgrading version 4.4 of zabbix. One of the company's web sites is inaccessible due to network problems, and zabbix did not issue an alarm.

The web monitoring configuration is as follows

The trigger is configured as follows

Web monitoring has alerted, there is an error, but the alarm is not triggered

After investigation, it is found that URL cannot be accessed due to network problems, and zabbix has not collected the http status code, so the alarm cannot be triggered. This is a bit of a pit. Version 3.0 returns a 0 when it encounters an unreachable URL, but version 4.4 does not return data.

Rewrite trigger condition

Official website reference screenshots and links

Https://www.zabbix.com/documentation/3.4/zh/manual/web_monitoring/items

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