In CoreOS if you want to add CA certificate to the list of trusted CA”s in the system, there are 2 options. Using “/usr/share/pki/ca-trust-source/” directory: /usr/share/pki/ca-trust-source/ contains CA certificates and trust settings in the PEM file format. The trust settings found in this directory will be interpreted with a low priority. To add a certificate … Read more
Recently working on exposing an application which was running on HTTPS port, I used following yaml to create ingress. Note here that backend service “connaisseur-svc-health” was redirecting traffic to a pod which was listening on HTTPS port only. Therefore backend service was only reachable via HTTPS . When accessing this via Ingress I got an … Read more
There are many ways to login to kubernetes pods, and most of them requires you to know the pod name. Now let’s say we want to login to a pod that is being served by a service we want to troubleshoot. One longer way could be to first determine all the pods running behind service, … Read more
Sometimes we may want to get custom output from oc/kubectl commands when looking for k8 cluster objects like namespace, pods, etc. In this article, we will explain how to use JSONPath or custom column options to customize the kubectl output. We will use ‘service’ as an example. 1. JSONPath Query JSONPath is a query language for … Read more