SNMP hosts not available

[mike548141]

Hi

I have 6 hosts running the zabbix agent, those are working as expected. I've also setup 6 hosts to use SNMP, but Zabbix is getting no data and shows them as unavailable.


Some background
1. This is a new (downloaded yesterday) Zabbix appliance running as a guest in Virtualbox,

Zabbix 5.0 LTS    5.0.2    Jul 13, 2020    Open virtualization format (.ovf)

2. The Zabbix appliance was compiled with snmp support

[root@appliance ~]# ldd /sbin/zabbix_server | egrep snmp
libnetsnmp.so.35 => /lib64/libnetsnmp.so.35 (0x00007f545301d000)

3. I've installed SNMP + utils. How crazy is it that these are not included in the appliance??

yum install net-snmp
yum install net-snmp-utils

4. I've manually configured 4 hosts in Zabbix to use SNMP, the community string in the Zabbix macro and on the device itself is "public".


5. From the Zabbix appliance I can snmpwalk the same device (cut short for brevity)

[root@appliance zabbix]# snmpwalk -v 2c -c public 10.1.3.221
SNMPv2-MIB::sysDescr.0 = STRING: HP ETHERNET MULTI-ENVIRONMENT
SNMPv2-MIB::sysObjectID.0 = OID: SNMPv2-SMI::enterprises.11.2.3.9.1
DISMAN-EVENT-MIB::sysUpTimeInstance = Timeticks: (106607193) 12 days, 8:07:51.93
SNMPv2-MIB::sysContact.0 = STRING:
SNMPv2-MIB::sysName.0 = STRING: celnz1-prt01
SNMPv2-MIB::sysLocation.0 = STRING:
SNMPv2-MIB::sysServices.0 = INTEGER: 72
SNMPv2-MIB::sysORLastChange.0 = Timeticks: (0) 0:00:00.00
IF-MIB::ifNumber.0 = INTEGER: 4
IF-MIB::ifIndex.2 = INTEGER: 2
IF-MIB::ifDescr.2 = STRING: Eth0
IF-MIB::ifType.2 = INTEGER: ethernetCsmacd(6)
IF-MIB::ifMtu.2 = INTEGER: 1500
IF-MIB::ifSpeed.2 = Gauge32: 10000000
IF-MIB::ifPhysAddress.2 = STRING: c8:d3:ff:85:6d:4b
... continues on from here

I'm new to Zabbix, if you could point me to the log files useful to daignose this. All I am seeing in /var/log/zabbix/zabbix_server.log is

... stuff above this
  1140:20200715:131628.509 server #34 started [alerter #3]
  1147:20200715:131628.509 server #40 started [lld worker #1]
  1148:20200715:131628.510 server #41 started [lld worker #2]
  1146:20200715:131628.510 server #39 started [lld manager #1]
  1149:20200715:131628.510 server #42 started [alert syncer #1]
  1095:20200715:014655.018 executing housekeeper
  1095:20200715:014655.104 housekeeper [deleted 0 hist/trends, 0 items/triggers, 0 events, 0 problems, 0 sessions, 0 alarms, 0 audit, 0 records in 0.083512 sec, idle for 1 hour(s)]
  1095:20200715:024708.578 executing housekeeper
  1095:20200715:024708.896 housekeeper [deleted 0 hist/trends, 8189 items/triggers, 0 events, 0 problems, 0 sessions, 0 alarms, 0 audit, 0 records in 0.317747 sec, idle for 1 hour(s)]
  1095:20200715:034719.640 executing housekeeper
  1095:20200715:034719.695 housekeeper [deleted 0 hist/trends, 0 items/triggers, 0 events, 0 problems, 0 sessions, 0 alarms, 0 audit, 0 records in 0.054232 sec, idle for 1 hour(s)]
  1095:20200715:044729.702 executing housekeeper
  1095:20200715:044729.783 housekeeper [deleted 0 hist/trends, 0 items/triggers, 0 events, 0 problems, 0 sessions, 0 alarms, 0 audit, 0 records in 0.078932 sec, idle for 1 hour(s)]
  1095:20200715:054741.087 executing housekeeper
  1095:20200715:054741.159 housekeeper [deleted 0 hist/trends, 0 items/triggers, 0 events, 0 problems, 0 sessions, 0 alarms, 0 audit, 0 records in 0.070621 sec, idle for 1 hour(s)]
  1095:20200715:064754.277 executing housekeeper
  1095:20200715:064754.348 housekeeper [deleted 0 hist/trends, 0 items/triggers, 0 events, 0 problems, 0 sessions, 0 alarms, 0 audit, 0 records in 0.069194 sec, idle for 1 hour(s)]

[mike548141]

I ended up deleting the appliance and starting again. Eventually got it working, but I think what made the difference is adding SNMP to the discovery checks