BrokenPipeError when details of service get huge (Bug?)

Troubleshooting
1

CMK version: 2.3.0p35
OS version: Ubuntu 22.04

Error message: Broken Pipe

In the file lib/python3/cmk/checkengine/submitters.py on line 213 (pipe.flush) we get an BrokenPipeError when the details of a service get huge. My workaround is as follows (reopening the Pipe):


try:
    pipe.write(msg.encode())
    # Important: Nagios needs the complete command in one single write() block!
    # Python buffers and sends chunks of 4096 bytes, if we do not flush.
    pipe.flush()
except BrokenPipeError as e:
    pipe = PipeSubmitter._open_command_pipe()

The original code is as follows:

pipe.write(msg.encode())
# Important: Nagios needs the complete command in one single write() block!
# Python buffers and sends chunks of 4096 bytes, if we do not flush.
pipe.flush()

Is there a better way than this in order to fix this issue?

2

Hi,

are we the only Checkmk users who face this issue.

–
Erwin

3

How huge are the details?
100 lines, 1000, more?

4

Different per Service. We have approximately 1600 Services. The Details of each service have more then 100 Lines. I’m going to check the detail lines and will come back with a more exact number.

5

The number of detail lines is not that much. Max 4 lines per service.