add migrations/standardize-labels.sh

Author: cognifloyd

migrations/standardize-labels.sh

@@ -0,0 +1,67 @@
+#!/bin/bash
+
+# We switched to the standard labels recommend in Helm's "Best Practices" doc.                                  
+# https://helm.sh/docs/chart_best_practices/labels/#standard-labels
+#
+# This script adds those labels to all the resources in an existing release,
+# so that helm upgrade will not create duplicate resources. The new label
+# selectors do not match the old labels, so this script adds the new labels
+# to the old resources. Thus, the new selectors will update them.
+
+# These env vars need to be set to use this script:
+#   RELEASE_NAME (same as .Release.Name)
+#   NAMESPACE (same as .Release.Namespace)
+#
+# For example:
+#   RELEASE_NAME=st2 NAMESPACE=st2 migrations/standardize-labels.sh
+
+RELEASE_NAME=${RELEASE_NAME:-st2}
+NAMESPACE=${NAMESPACE:-default}
+CHART_NAME=${CHART_NAME:-stackstorm-ha} # see Chart.yaml
+
+
+function klabel_app_instance() {
+	kind=${1}
+	kubectl label "${kind}" \
+		-n "${NAMESPACE}" \
+		-l "vendor=stackstorm" \
+		-l "release=${RELEASE_NAME}" \
+		"app.kubernetes.io/instance=${RELEASE_NAME}"
+}
+
+function klabel_app_name() {
+	kind=${1}
+	app=${2}
+	kubectl label "${kind}" \
+		-n "${NAMESPACE}" \
+		-l "vendor=stackstorm" \
+		-l "release=${RELEASE_NAME}" \
+		-l "app=${app}" \
+		"app.kubernetes.io/name=${app}"
+}
+
+for kind in ConfigMap Secret Ingress Service ServiceAccount Deployment ReplicaSet Pod Job; do
+	klabel_app_instance ${kind}
+done
+
+klabel_app_name ConfigMap st2
+klabel_app_name Secret st2
+klabel_app_name Secret st2chatops
+klabel_app_name Secret ${CHART_NAME} # for ServiceAccount
+klabel_app_name ServiceAccount ${CHART_NAME}
+klabel_app_name Ingress ingress
+
+for app in st2actionrunner st2api st2auth st2chatops st2client st2garbagecollector st2notifier st2rulesengine st2scheduler st2stream st2timersengine st2web st2workflowengine; do
+	klabel_app_name Deployment ${app}
+	klabel_app_name ReplicaSet ${app}
+	klabel_app_name Pod ${app}
+done
+
+for app in st2api st2auth st2chatops st2stream st2web; do
+	klabel_app_name Service ${app}
+done
+
+for app in st2 st2-apply-rbac-definitions st2-register-content; do
+	klabel_app_name Job ${app}
+	klabel_app_name Pod ${app}
+done