January 2019
Intermediate to advanced
798 pages
20h 33m
English
Content preview from Zabbix 4 Network Monitoring - Third Edition
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Debugging
If traps do not arrive at all or do not fall into the correct items, there are a few things to check. If the traps do not appear when sent from a remote host, but work properly when sent from the Zabbix server, check the local firewall on the Zabbix server and make sure incoming UDP packets on port 162 are allowed.
Also make sure that the IP address the Zabbix server sees in the incoming traps matches the address in the SNMP interface for that host.
Sometimes, you might see that traps arrive at the SNMP trap daemon but do not seem to be passed on. It might be useful to debug snmptrapd in this case—luckily, it allows a quite detailed debug output. Exact values to use for various file locations will differ, but the following might ...
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