2019-06-07 update

content/blog/decode-kubernetes-secret-base64.md

@@ -0,0 +1,36 @@
+---
+title: "One-liner to decode a Kubernetes secret (base64 encoded)"
+date: 2019-06-07T00:00:00+02:00
+opensource: 
+- OpenShift
+---
+
+Creating a Kubernetes secret from a value is easy:
+
+```raw
+$ oc create secret generic my-secret --from-literal=secretValue=super-secret
+secret/my-secret created
+```
+
+But getting back this value (from a Shell script, for instance) is not so easy since it is now base64 encoded:
+
+```raw
+$ oc get secret my-secret -o yaml
+apiVersion: v1
+kind: Secret
+metadata:
+  name: my-secret
+  namespace: qlkube
+type: Opaque
+data:
+  secretValue: c3VwZXItc2VjcmV0
+```
+
+Hopefully, since the latest versions of Kubernetes, there is now a one-liner to extract the field and base64 decode it:
+
+```raw
+$ oc get secret my-secret -o go-template --template="{{.data.secretValue|base64decode}}"
+super-secret
+```
+
+Enjoy!