Add app.kubernetes.io/component to preflight and google-cas-issuer

Signed-off-by: Maël Valais <mael@vls.dev>

Author: maelvls

.gitignore

@@ -0,0 +1,2 @@
+ca.crt
+ca.key

README.md

@@ -229,6 +229,36 @@ You can now click on "View clusters" to monitor your certificates. The
 documentation about the Jetstack Secure platform is available at
 <https://platform.jetstack.io/docs>.
 
+Let us try with an example. We can create a CA issuer and sign a
+certificate that only lasts for 30 days:
+
+```sh
+openssl genrsa -out ca.key 2048
+openssl req -x509 -new -nodes -key ca.key -subj "/CN=example" -out ca.crt
+kubectl create secret tls example --cert=ca.crt --key=ca.key
+kubectl apply -f- <<EOF
+apiVersion: cert-manager.io/v1
+kind: Issuer
+metadata:
+  name: selfsigned-issuer
+spec:
+  selfSigned: {}
+---
+apiVersion: cert-manager.io/v1alpha2
+kind: Certificate
+metadata:
+  name: example
+spec:
+  duration: 721h # very short time to live
+  dnsNames:
+    - example.com
+  issuerRef:
+    kind: Issuer
+    name: letsencrypt-prod
+  secretName: example-tls
+EOF
+```
+
 ### Step 3 (optional): set up the Google Certificate Authority Service
 
 [Google Certificate Authority Service][] is a highly available, scalable Google Cloud

chart/jetstack-secure-gcm/charts/google-cas-issuer/templates/_helpers.tpl

@@ -48,7 +48,7 @@ Selector labels
 {{- define "google-cas-issuer.selectorLabels" -}}
 app.kubernetes.io/name: {{ include "google-cas-issuer.name" . }}
 app.kubernetes.io/instance: {{ .Release.Name }}
-app.kubernetes.io/component: "controller"
+app.kubernetes.io/component: "google-cas-issuer"
 {{- end }}
 
 {{/*

chart/jetstack-secure-gcm/charts/preflight/templates/_helpers.tpl

@@ -48,6 +48,7 @@ Selector labels
 {{- define "preflight.selectorLabels" -}}
 app.kubernetes.io/name: {{ include "preflight.name" . }}
 app.kubernetes.io/instance: {{ .Release.Name }}
+app.kubernetes.io/component: preflight
 {{- end }}
 
 {{/*