API Error:Decryption of SNMPv3 password failed.

[Media4u]

CMK version: Checkmk Raw Edition 2.2.0p25
OS version:DEBIAN-12

Error message:

What could be the problem?
I should add that earlier SNMP worked without any problem

[chauhan_sudhir]

Is this by any chance the Appliance?
Also, how does your host property and which SNMP version are you using for the authentication?

[KluthR (Robin Kluth)]

I have the same issue since today. Ubuntu 20.04, self hosted. CMK 2.2p26. Nothing changed on our side. The only thing today were unattended upgrades:

Start-Date: 2024-07-25  06:36:33
Commandline: /usr/bin/unattended-upgrade
Upgrade: python3-zipp:amd64 (1.0.0-1, 1.0.0-1ubuntu0.1)
End-Date: 2024-07-25  06:36:42

Start-Date: 2024-07-25  06:36:47
Commandline: /usr/bin/unattended-upgrade
Upgrade: bind9-dnsutils:amd64 (1:9.16.48-0ubuntu0.20.04.1, 1:9.18.28-0ubuntu0.20.04.1), bind9-libs:amd64 (1:9.16.48-0ubuntu0.20.04.1, 1:9.18.28-0ubuntu0.20.04.1)
End-Date: 2024-07-25  06:36:49

Start-Date: 2024-07-25  06:36:52
Commandline: /usr/bin/unattended-upgrade
Upgrade: bind9-host:amd64 (1:9.16.48-0ubuntu0.20.04.1, 1:9.18.28-0ubuntu0.20.04.1)
End-Date: 2024-07-25  06:36:52

I dont beliebe that the python zipp did that…?

[andreas-doehler (Andreas)]

If it is also a RAW edition - you should do on the command line a

cmk --debug -vvn hostname

Here you should get a complete snmpwalk command that you can execute manually to see if the problem is inside CMK or in the OS directly.

If you use enterpise edition you can switch the SNMP backend to get the snmpwalk command as executed by CMK.

[KluthR (Robin Kluth)]

thanks. Just during testing the error disappeared. everything went green again. Thats weird.

I continue to observe

[Yggy]

I had ‘same’ error some weeks ago. I added parent of a host, and afterwards it gave the same error if I remember correctly, or something very similar. Took some time to figure out what had happened.

While I was writing a post on this forum (which I cancelled later) of my found ‘bug’, trying to reproduce the issue with screenshots and such, I found out what caused error in my case. Naughty password manager was proactive, autofilling wrong passwords in the SNMP v3 password fields while my focus was on adding parent host info. Fixed it, by putting right passwords back in, AND disabled the autofill feature of my password manager for checkmk server domain.