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Incident report
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Resolution: Unresolved
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Trivial
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None
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None
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None
Steps to reproduce:
I have the Discovery rule of SNMPv2 with 2 checks:
SNMPv2 agent "1.3.6.1.2.1.1.5.0"
SNMPv2 agent "1.3.6.1.4.1.2636.3.1.2.0"
Result:
Only the OID 1.3.6.1.2.1.1.5.0 returns value with the check, even though both return value with snmpget when I try from the proxy server itself
corl-prod-zabbix02:~/zabbix$ snmpget -v2c -c SENSORED 10.1.245.55 1.3.6.1.2.1.1.5.0 iso.3.6.1.2.1.1.5.0 = STRING: "HOSTNAME" corl-prod-zabbix02:~/zabbix$ snmpget -v2c -c SENSORED 10.1.245.55 1.3.6.1.4.1.2636.3.1.2.0 iso.3.6.1.4.1.2636.3.1.2.0 = STRING: "Juniper EX3400-48P Switch"
Here is the relevant timeout log
35:20251022:122023.845 In process_rule() rule:'Gar mgmnt Network' range:'10.1.245.55' 35:20251022:122023.845 process_rule() range:'10.1.245.55' 35:20251022:122023.847 In zbx_async_check_snmp() itemid:0 key:'1.3.6.1.2.1.1.5.0' host:'' addr:'10.1.245.55' timeout:3 retries:0 max_repetitions:0 35:20251022:122023.847 In zbx_is_ip4() ip:'10.1.245.55' 35:20251022:122023.847 resolved address '10.1.245.55' 35:20251022:122023.847 In zbx_is_ip4() ip:'10.1.245.55' 35:20251022:122023.848 itemid:0 SNMP [[email protected]:161] 35:20251022:122023.848 [2] discovery_snmp() ip:10.1.245.55 port:161, key:1.3.6.1.2.1.1.5.0 ret:0 35:20251022:122023.848 In zbx_async_check_snmp() itemid:0 key:'1.3.6.1.4.1.2636.3.1.2.0' host:'' addr:'10.1.245.55' timeout:0 retries:0 max_repetitions:0 35:20251022:122023.848 In zbx_is_ip4() ip:'10.1.245.55' 35:20251022:122023.848 resolved address '10.1.245.55' 35:20251022:122023.849 In zbx_is_ip4() ip:'10.1.245.55' 35:20251022:122023.849 itemid:0 SNMP [[email protected]:161] 35:20251022:122023.849 [2] discovery_snmp() ip:10.1.245.55 port:161, key:1.3.6.1.4.1.2636.3.1.2.0 ret:0 35:20251022:122023.852 End of async_task_process_task_snmp_cb():TIMEOUT_ERROR itemid:0 timeout event:1 fd:-1 size:0 error:cannot retrieve OID: '.1.3.6.1.4.1.2636.3.1.2.0' from [[10.1.245.55]:161]: timed out 35:20251022:122023.852 [2] In process_snmp_result() key:'1.3.6.1.4.1.2636.3.1.2.0' host:'' addr:'10.1.245.55' ret:TIMEOUT_ERROR
If I add the host manually with SNMPv2, OID 1.3.6.1.4.1.2636.3.1.2.0 returns value just fine. This only happens with the Discovery check
