Running the cluster network operator against a running openshift cluster

README.md

Interactively running the cluster-network-operator

This describes how to run the cluster-network-operator for development purposes, using the ./hack/run-locally.sh script.

You'll need:

• A recent install of openshift, here's Doug's cheat sheet
• A clone of the cluster-network-operator.

Once that's in place you'll need to know:

• Your cluster installation directory
• Where your oc binary is
• Where your kubeconfig is (likely in the installation dir)

Most of the instructions come from the HACKING.md from the cluster-network-operator.

Specifically the attach mode section.

Basic setup

Firstly, make sure your oc binary is in your PATH.

In my case I keep the most recent one in my ~/Downloads, so I add it to my path with:

export PATH=$PATH:~/Downloads/installer21

You'll also want to set your KUBECONFIG environment variable to where your kubeconfig is.

export KUBECONFIG=/tmp/ocpinstall/auth/kubeconfig

Then you'll want to set one that's specifically for the CNO, which is:

export CLUSTER_DIR=/tmp/ocpinstall/

Running interactively...

First, make sure you do a recent build:

./hack/build-go.sh

Now you can interactively run the CNO with:

./hack/run-locally.sh

It'll attach to an already running cluster and it'll scale down the instances and then launch it locally.