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Lab 07: add firewall rule to allow etcd traffic

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Yoshua Wakeham 2018-05-05 19:16:45 -04:00 committed by GitHub
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@ -4,7 +4,13 @@ Kubernetes components are stateless and store cluster state in [etcd](https://gi
## Prerequisites
The commands in this lab must be run on each controller instance: `controller-0`, `controller-1`, and `controller-2`. Login to each controller instance using the `gcloud` command. Example:
First, we need to add an extra firewall rule to allow the `etcd` nodes on the controller instances to talk to each other:
```
gcloud compute firewall-rules create kubernetes-the-hard-way-allow-etcd --allow tcp:2379,tcp:2380 --network kubernetes-the-hard-way --source-ranges 10.240.0.0/24
```
The remaining commands in this lab must be run on each controller instance: `controller-0`, `controller-1`, and `controller-2`. Login to each controller instance using the `gcloud` command. Example:
```
gcloud compute ssh controller-0