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add gcloud ssh command suggestion 

In lab 05 a suggestion on usage of gcloud's ssh command is provided.  The first time this is needed is in lab 04.  Add cmd suggestion there as well.
pull/191/head
Eric Ernst 2017-07-19 11:40:29 -07:00 committed by GitHub
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docs/04-etcd.md
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@ -21,6 +21,8 @@ However, all the e2e tested configurations currently run etcd on the master node
Run the following commands on `controller0`, `controller1`, `controller2`:
> Login to each machine using the gcloud compute ssh command
### TLS Certificates
The TLS certificates created in the [Setting up a CA and TLS Cert Generation](02-certificate-authority.md) lab will be used to secure communication between the Kubernetes API server and the etcd cluster. The TLS certificates will also be used to limit access to the etcd cluster using TLS client authentication. Only clients with a TLS certificate signed by a trusted CA will be able to access the etcd cluster.