Piggyback service discovery

Troubleshooting
1

**CMK version: Checkmk Raw Edition 2.3.0p14 **
**OS version: Ubuntu 22.04 and 24.04 **

Hello everyone, Im asking once again for help due to problems with the piggyback mechanism.

My piggyback servers are recognized as such and also receive data, but only 3 services are displayed in the service discovery. I miss the other services which are also displayed on my other hosts:

image
image1443Ă—970 48.3 KB

(Unfortunately, as a new user, I can only upload one picture, which is why I had to cut the two together. I hope Im not breaking any rules and if I am, I apologize for the inconvenience.)

When I run the agent on the parent server, I believe that all the required information is read out in the output. But I don’t know where the error is, do I have to configure the service discovery further?

I think its due to a problem understanding my side of the configuration or something like that. If you need further configuration settings from me, I will be happy to provide them.

2

My first guess would be that you don’t have an agent installed or no matching agent plugin rule on the piggyback hosts but on your other example Host.

3

Maybe Im missing a bit of context to my setup:
I have two hosts, where host A has two IP addresses, one public and one private. Host B only has a private one and is therefore only accessible to the outside world via NAT, which is why I would like to use the piggyback mechanism for it. The agent is installed on both hosts, host A also receives all services automatically in the discovery. To get the data from host B to host A, I have written a small bash script, which is located in the check_mk plugins folder, with the following content:

#!/bin/bash
echo “<<<<Host-B>>>>”
ssh Host-B -T '/usr/bin/check_mk_agent'
echo “<<<<>>>>”

If I run the script manually, I get the data from host B on the terminal of host A. If I run the agent manually via “check_mk_agent” on the terminal, the data from host B is also included in the output as an attachment to the data from host A.

It works now, I have reconfigured the whole setup. Unfortunately I cant say what the problem was.

1 Like