etcd v3 can't read encoded values
A bit late to the show but here is how I was able to do that.Because in etcd pre-v3 the data was stored in plain json and since v3 it is in binary format the additional decode step is needed.
You may check this repo for details: https://github.com/jpbetz/auger
And here are Kubernetes docs regarding protobuf encoding
And the working example is:
etcdctl get "/registry/pods/default/nginx-dbddb74b8-62hh7" --prefix -w simple | auger decodeNow the response is plain-text:
apiVersion: v1kind: Podmetadata: annotations: kubernetes.io/limit-ranger: 'LimitRanger plugin set: cpu request for container nginx' creationTimestamp: 2019-08-12T14:11:57Z...
By default in kube 1.6 and up, values are stored in protobuf encoding, not JSON
kubernetes known issue：https://github.com/kubernetes/kubernetes/issues/44670
As mentioned in the issue，the openshift tool(https://github.com/openshift/origin/tree/master/tools/etcdhelper) could help read the value. It works for me, but it's really not convenient.