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Tuesday, August 30, 2022

Network debugging in k8s


 Sometimes it is good to look at a network from the inside of a kubernetes cluster. Well-prepared images do not have any useful networking tools (because they are minimal image designed to do specific task). Therefore, you might need to run commands from a dedicated container. An example of such tool is the netshoot image. It can be found in GitHub:

It's very easy to run: 

  kubectl run tmp-shell --rm -i --tty --image nicolaka/netshoot

Tuesday, May 31, 2022

Jenkins and Splunk (Cloud)

There is the Jenkins Plugin to set log export to Splunk. In Splunk Marketplace you can find the Splunk App for Jenkins, but the app works only for Splunk Enterprise, not the Cloud edition. Documentation describe how to connect Jenkins to Splunk. It includes values for cloud deployment as well as on-premises one. Thanks to that, the connection was easy to establish, but there were no logs from Jenkins. I had to manually created 4 indexes (I got them from this discussion) to get Jenkins logs visible in Splunk.