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The chapter 'Bootstrapping the Kubernetes Worker Nodes' is updated.

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docs/09-bootstrapping-kubernetes-workers.md
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# Bootstrapping the Kubernetes Worker Nodes # Bootstrapping the Kubernetes Worker Nodes
In this lab you will bootstrap three Kubernetes worker nodes. The following components will be installed on each node: [runc](https://github.com/opencontainers/runc), [gVisor](https://github.com/google/gvisor), [container networking plugins](https://github.com/containernetworking/cni), [containerd](https://github.com/containerd/containerd), [kubelet](https://kubernetes.io/docs/admin/kubelet), and [kube-proxy](https://kubernetes.io/docs/concepts/cluster-administration/proxies). In this chapter, you will bootstrap three Kubernetes worker nodes. The following components will be installed on each node: [runc](https://github.com/opencontainers/runc), [gVisor](https://github.com/google/gvisor), [container networking plugins](https://github.com/containernetworking/cni), [containerd](https://github.com/containerd/containerd), [kubelet](https://kubernetes.io/docs/admin/kubelet), and [kube-proxy](https://kubernetes.io/docs/concepts/cluster-administration/proxies).
## Prerequisites ## Prerequisites
The commands in this lab must be run on each worker instance: `worker-1`, `worker-2`, and `worker-3`. Login to each worker instance: The commands in this chapter must be run on each worker node: `worker-1`, `worker-2`, and `worker-3`. Login to each worker node:
``` ```
$ ssh -i ~/.ssh/id_rsa-k8s.pub 10.240.0.21 $ ssh -i ~/.ssh/id_rsa-k8s 10.240.0.21
``` ```
### Running commands in parallel with tmux ### Running commands in parallel with tmux
[tmux](https://github.com/tmux/tmux/wiki) can be used to run commands on multiple compute instances at the same time. See the [Running commands in parallel with tmux](01-prerequisites.md#running-commands-in-parallel-with-tmux) section in the Prerequisites lab. [tmux](https://github.com/tmux/tmux/wiki) can be used to run commands on multiple virtual machines at the same time. See the [Running commands in parallel with tmux](01-prerequisites.md#running-commands-in-parallel-with-tmux) section in the Prerequisites lab.
## Provisioning a Kubernetes Worker Node ## Provisioning a Kubernetes Worker Node
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### Configure CNI Networking ### Configure CNI Networking
Retrieve the Pod CIDR range for the current compute instance: Get the Pod CIDR range for the current compute instance:
``` ```
$ POD_CIDR=10.200.$(uname -n | awk -F"-" '{print $2}').0/24 $ POD_CIDR=10.200.$(uname -n | awk -F"-" '{print $2}').0/24
@ -237,7 +237,7 @@ EOF
### Configure the Kubernetes Proxy ### Configure the Kubernetes Proxy
``` ```
sudo mv kube-proxy.kubeconfig /var/lib/kube-proxy/kubeconfig $ sudo mv kube-proxy.kubeconfig /var/lib/kube-proxy/kubeconfig
``` ```
Create the `kube-proxy-config.yaml` configuration file: Create the `kube-proxy-config.yaml` configuration file: