Scripts for patching a project namespace and deploying pods onto specified nodes in OpenShift

get_node_hostname_labels

#!/usr/bin/env bash

oc get nodes -l type=compute -o=jsonpath='{range .items[*]}{.metadata.labels.hostname}{"\n"}{end}'

patch_ns

#!/usr/bin/env bash

NODE=$1

if [[ -z $NODE ]]
then
  echo "need a node name"
fi

echo $NODE

NS='chcollin-sre'
P_STRING="{\"metadata\": {\"annotations\": {\"openshift.io/node-selector\": \"hostname=${NODE}\"}}}"

oc patch namespace $NS -p "${P_STRING}"

# Get the node to kill
oc get --no-headers=true --namespace $NS po -o=jsonpath='{range .items[*]}{.metadata.name}{"\n"}{end}' | xargs oc --namespace $NS delete po

echo "Waiting for pod to become ready:"
oc get po --namespace $NS -o=jsonpath='{range .items[*]}{.metadata.name}{"\t"}{.status.hostIP}{"\t"}{.status.phase}{"\n"}{end}'

until oc get po --namespace $NS -o=jsonpath='{range .items[*]}{.metadata.name}{"\t"}{.status.hostIP}{"\t"}{.status.phase}{"\n"}{end}' |grep Running
do
  oc get po --namespace $NS -o=jsonpath='{range .items[*]}{.metadata.name}{"\t"}{.status.hostIP}{"\t"}{.status.phase}{"\n"}{end}'
  sleep 1
done