ubuntu server image possibly missing net-snmp-agent-libs

bw2305 commented 1 year ago

SUMMARY

Couldnt get snmp monitoring up and runing with ubuntu server possibly missing net-snmp-agent-libs Compared Dockerfiles - and saw difference - tested with alpine, same env_vars, same zbx_env: working fine!

OS / ENVIRONMENT / Used docker-compose files

docker-compose_v3_ubuntu_pgsql_latest.yaml

CONFIGURATION

nothing special, out of the box

STEPS TO REPRODUCE

checked with snmpwalk (installed as root) communication was ok, only zabbix didnt do any.. dns ok, via ip ok.

EXPECTED RESULTS

Zabbix should report SNMP as green

ACTUAL RESULTS

NO SNMP communication trigger

dotneft commented 1 year ago

what error do you see in Zabbix frontend?

bw2305 commented 1 year ago

Hello Alexey,

in the frontend I see "Timeout while connecting to :161" when I do a mouse over in Datacollection ->hosts.

After a while in Monitoring -> Problems Extreme EXOS: No SNMP data collection

show up from the template trigger.

Looks like the is no snmp communication at all working, I see (using tcpdump on the docker host) pings between zabbix and the switch.

And a single snmp reqest.

zabbixD.31993 > sw-bwe.we.de.snmp: C="WE-ro-smnp" GetRequest(32) E:1916.1.1.1.8.0

zabbixD.54582 > sw-bwe.we.de.snmp: C="WE-ro-smnp" GetRequest(28) system.sysObjectID.0

I see it's trying to connect, so probably the lib is actually not missing.

and in the server logs a recurring (docker logs -f zbx-zabbix-server-1)

Bad operator (INTEGER): At line 73 in /var/lib/mibs/ietf/SNMPv2-PDU Bad operator (INTEGER): At line 73 in /var/lib/mibs/ietf/SNMPv2-PDU Bad operator (INTEGER): At line 73 in /var/lib/mibs/ietf/SNMPv2-PDU Bad operator (INTEGER): At line 73 in /var/lib/mibs/ietf/SNMPv2-PDU

Compared with the alpine: there's no BAD operator message there.

Maybe it's not a missing lib, maybe a bad mib file?

Crosscheck with the ubuntu-version:

added another host. A ups. APC srt5000 template

same timeout

9.330747 IP zabbixD.64768 > ups01.we.de.snmp: C="WE-ro-smnp" GetRequest(34) E:318.1.1.1.4.1.1.0

Test with snmpwalk from inside the server container:

docker exec -u root -it zbx-zabbix-server-1 /bin/bash

apt update

apt install snmp

snmpwalk -v 2c -c mySecretReadOnlyCommunityString sw-bwe.we.de

results in:

Bad operator (INTEGER): At line 73 in /var/lib/mibs/ietf/SNMPv2-PDU <-------------- ## SAME Mesage here! SNMPv2-MIB::sysDescr.0 = STRING: ExtremeXOS (X440G2-12p-10G4) version 32.6.1.5 32.6.1.5 by release-manager on Wed 18 Oct 2023 07:02:48 PM UTC SNMPv2-MIB::sysObjectID.0 = OID: SNMPv2-SMI::enterprises.1916.2.227 DISMAN-EVENT-MIB::sysUpTimeInstance = Timeticks: (32007300) 3 days, 16:54:33.00 SNMPv2-MIB::sysContact.0 = STRING: @.*** SNMPv2-MIB::sysName.0 = STRING: sw-bwe SNMPv2-MIB::sysLocation.0 = STRING: we-eltville-office-bwe SNMPv2-MIB::sysServices.0 = INTEGER: 79 IF-MIB::ifNumber.0 = INTEGER: 50

But this probably prooves that networking is ok.

tcpdump in parallel fires a lot of traffic running snmpwalk, omitted.

Strange...

With Alpine:

For testing, why I filed this issue, maybe with the wrong conclusion:

I kept the env_vars and zbx_env as is. Then replaced the docker-compose.yaml with the alpine version and restarted.

So same config, different image: works

BR and MANY THANKS FOR YOUR WORK!!!! - great Zabbix, love it!

Bernhard

esendet: Montag, 13. November 2023 um 14:06 Uhr Von: "Alexey Pustovalov" @.> An: "zabbix/zabbix-docker" @.> Cc: "bw2305" @.>, "Author" @.> Betreff: Re: [zabbix/zabbix-docker] ubuntu server image possibly missing net-snmp-agent-libs (Issue #1105)

what error do you see in Zabbix frontend?

— Reply to this email directly, view it on GitHub, or unsubscribe. You are receiving this because you authored the thread.Message ID: @.***>

dotneft commented 1 year ago

It looks like SNMP device is not available from Zabbix server / proxy container or incorrect SNMP community.

bw2305 commented 1 year ago

        Ouch!You’re right.Community String.WE-ro-snmp.  I mistyped mn instead of nm - will verify tomorrow.I’ve been looking over and over at it. Ouch, that hurts.Sorry for everything. Ashes on my head.Thanks Bernhard :)On 14.11.23 at 09:47, Alexey Pustovalov wrote:

                From: "Alexey Pustovalov" ***@***.***>Date: 14. November 2023To: "zabbix/zabbix-docker" ***@***.***>Cc: "Author" ***@***.***>,"bw2305" ***@***.***>Subject: Re: [zabbix/zabbix-docker] ubuntu server image possibly missing       net-snmp-agent-libs  (Issue #1105)

It looks like SNMP device is not available from Zabbix server / proxy container or incorrect SNMP community.

—Reply to this email directly, view it on GitHub, or unsubscribe.You are receiving this because you authored the thread.Message ID: @.***>

bw2305 commented 1 year ago

            Please take my excuses. SNMP an smnp are not the same. This working. The Bad operator (integer) is still thereThanks BrBernhard :)On 14.11.23 at 09:47, Alexey Pustovalov wrote:

                From: "Alexey Pustovalov" ***@***.***>Date: 14. November 2023To: "zabbix/zabbix-docker" ***@***.***>Cc: "Author" ***@***.***>,"bw2305" ***@***.***>Subject: Re: [zabbix/zabbix-docker] ubuntu server image possibly missing       net-snmp-agent-libs  (Issue #1105)

It looks like SNMP device is not available from Zabbix server / proxy container or incorrect SNMP community.

—Reply to this email directly, view it on GitHub, or unsubscribe.You are receiving this because you authored the thread.Message ID: @.***>

zabbix / zabbix-docker