siteconfig_network_to_nmstate.sh

#! /bin/bash
#
# This script takes a sitconfig file and it will move
# for each node
# the nodeNetwork section into a separated NMStateconfig
#
# It can be helpful to reduce a siteconfig file, moving
# the network configuration to separate NMStateconfig files
# Then everything will be merged together with ArgoCD
# to start a deployment
#
# The final result should not be any difference from ArgoCD
# perspective. Same objects generated.
#
# Finally, the script includes the NMStateconfig into your
# kustomization file.
#
# You cannot run the script twice. So, if somethig goes wrong
# just restore everything. Actually, you should be doing this
# over a git repository with siteconfigs
#
# Author: Jose Gato Luis <jgato@redhat.com>


if [ $# -lt 1 ]
  then
    echo "Usage: ./script.sh <SITECONFIG_FILE>"
    exit 1
fi

CLUSTERNAME=$(yq -r ' explode(.) | .metadata.name' "$1")
export CLUSTERNAME

mkdir -p NMStates

for node in $(yq -r ' explode(.) | .spec.clusters[0].nodes[].hostName' "$1")
do
    export NODENAME=${node}

    NODENETWORK=$(yq -r ' explode(.) | .spec.clusters[0].nodes[] | select(.hostName == env(NODENAME)) | .nodeNetwork' "$1")
    export NODENETWORK
    cat <<"EOF" | envsubst > /tmp/nmstate.yaml
        apiVersion: agent-install.openshift.io/v1beta1
        kind: NMStateConfig
        metadata:
          annotations:
            argocd.argoproj.io/sync-wave: "1"
            ran.openshift.io/ztp-gitops-generated: '{}'
          labels:
            app.kubernetes.io/instance: clusters
            nmstate-label:  ${CLUSTERNAME}
          name:  ${NODENAME}
          namespace: ${CLUSTERNAME}
        spec:
EOF
    echo "Writing NMStateConfig of ${NODENAME} into ./NMStates/nmstate-${NODENAME}.yaml"
    yq -r '.spec = env(NODENETWORK) ' /tmp/nmstate.yaml > ./NMStates/nmstate-"${NODENAME}.yaml"
    echo "Linking the file into kustomization.yaml"
    CREATEDFILE="./NMStates/nmstate-${NODENAME}.yaml"
    export CREATEDFILE
    yq  -i '.bases += [ env(CREATEDFILE) ]' kustomization.yaml

done

echo "Deleting nodeNetwork info from ${1}"
yq -i ' explode(.) | del(.spec.clusters[0].nodes[].nodeNetwork)' "$1"