Cmk-update-agent bug comparing hashes

Troubleshooting
,
1

**CMK version: 2.1.0p11 **
OS version: Debian 11

I wondered why a host did not get Updates from cmk-update-agent. I did this:

# cmk-update-agent -v

+-------------------------------------------------------------------+
|                                                                   |
|  Checkmk Agent Updater v2.1.0-2022.07.04 - Update                |
|                                                                   |
+-------------------------------------------------------------------+
Getting target agent configuration for host '*******************' from deployment server
Target state (from deployment server):
  Agent Available:     True
  Signatures:          1
  Target Hash:         fb8e31f9e2c0f892
Agent fb8e31f9e2c0f892 already installed.

# rpm -qa |grep check
check-mk-agent-2.1.0p6-1.5f99fe1b89a7e805.noarch

# cmk-update-agent -v -r

+-------------------------------------------------------------------+
|                                                                   |
|  Checkmk Agent Updater v2.1.0-2022.07.04 - Update                |
|                                                                   |
+-------------------------------------------------------------------+
Getting target agent configuration for host '**************************' from deployment server
Target state (from deployment server):
  Agent Available:     True
  Signatures:          1
  Target Hash:         fb8e31f9e2c0f892
Agent fb8e31f9e2c0f892 already installed.
Forcing reinstallation.
Downloaded agent has size 17752052 bytes.
Signature check OK.
Invoking package manager: rpm -vU --oldpackage --replacepkgs /tmp/check-mk-agent-2nqiu2jb
Output from rpm:
  Preparing packages...
  Removing systemd units: check-mk-agent-async.service, check-mk-agent.socket, check-mk-agent@.service, cmk-agent-ctl-daemon.service, cmk-update-agent.service, cmk-update-agent.timer
  check-mk-agent-2.1.0p11-1.fb8e31f9e2c0f892.noarch
  check-mk-agent-2.1.0p6-1.5f99fe1b89a7e805.noarch
  
  
  Deploying systemd units: check-mk-agent-async.service check-mk-agent.socket check-mk-agent@.service cmk-agent-ctl-daemon.service cmk-update-agent.service cmk-update-agent.timer
  Deployed systemd
  Creating/updating cmk-agent user account ...
  Activating systemd unit 'check-mk-agent-async.service'...
  Activating systemd unit 'check-mk-agent.socket'...
  Activating systemd unit 'cmk-agent-ctl-daemon.service'...
  Activating systemd unit 'cmk-update-agent.timer'...
  
Successfully installed agent fb8e31f9e2c0f892.

**************# rpm -qa |grep check
check-mk-agent-2.1.0p11-1.fb8e31f9e2c0f892.noarch

It seems that cmk-update-agent fails to compare hashes?

Bug or feature?

Florian

2

Found the problem: During OS Upgrade the check-mk-agent package was downgraded to a older version from our repositories. cmk-update-agent records the last update in /etc/cmk-update-agent.state and knows nothing about the downgrade.

3

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