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kubernetes-the-hard-way
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8
README.md
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@ -19,10 +19,10 @@ Kubernetes The Hard Way guides you through bootstrapping a basic Kubernetes clus
Component versions:
* [kubernetes](https://github.com/kubernetes/kubernetes) v1.32.x
* [containerd](https://github.com/containerd/containerd) v2.1.x
* [cni](https://github.com/containernetworking/cni) v1.6.x
* [etcd](https://github.com/etcd-io/etcd) v3.6.x
* [kubernetes](https://github.com/kubernetes/kubernetes) v1.33.x
* [containerd](https://github.com/containerd/containerd) v2.0.x
* [cni](https://github.com/containernetworking/cni) v1.7.x
* [etcd](https://github.com/etcd-io/etcd) v3.5.x
## Labs

51
docs/02-jumpbox.md
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@ -52,20 +52,46 @@ pwd
In this section you will download the binaries for the various Kubernetes components. The binaries will be stored in the `downloads` directory on the `jumpbox`, which will reduce the amount of internet bandwidth required to complete this tutorial as we avoid downloading the binaries multiple times for each machine in our Kubernetes cluster.
The binaries that will be downloaded are listed in either the `downloads-amd64.txt` or `downloads-arm64.txt` file depending on your hardware architecture, which you can review using the `cat` command:
The binaries that will be downloaded are listed in `download-template.txt`, which is a template file that will match your system architecture and the latest software version. You can check it by the following command.
```bash
cat downloads-$(dpkg --print-architecture).txt
cat downloads-template.txt
```
Download the binaries into a directory called `downloads` using the `wget` command:
```bash
wget -q --show-progress \
{
export ARCH=$(dpkg --print-architecture)
echo $ARCH
export K8S_VERSION=$(curl -sSL https://dl.k8s.io/release/stable.txt)
echo "K8S Version: $K8S_VERSION"
export CRI_VERSION=$(wget -qO- https://api.github.com/repos/kubernetes-sigs/cri-tools/releases/latest | grep '"tag_name":' | sed -E 's/.*"([^"]+)".*/\1/')
echo "CRI Version: $CRI_VERSION"
export RUNC_VERSION=$(wget -qO- https://api.github.com/repos/opencontainers/runc/releases/latest | grep '"tag_name":' | sed -E 's/.*"([^"]+)".*/\1/')
echo "runc Version: $RUNC_VERSION"
export CNI_VERSION=$(wget -qO- https://api.github.com/repos/containernetworking/plugins/releases/latest | grep '"tag_name":' | sed -E 's/.*"([^"]+)".*/\1/')
echo "cni Version: $CNI_VERSION"
export CONTAINERD_VERSION=$(wget -qO- https://api.github.com/repos/containerd/containerd/releases/latest | grep '"tag_name":' | sed -E 's/.*"v?([^"]+)".*/\1/')
echo "containerd Version: v$CONTAINERD_VERSION"
export ETCD_VERSION=$(wget -qO- https://api.github.com/repos/etcd-io/etcd/releases/latest | grep '"tag_name":' | sed -E 's/.*"([^"]+)".*/\1/')
echo "etcd Version: $ETCD_VERSION"
envsubst < download-template.txt > download.txt
wget -q --show-progress \
--https-only \
--timestamping \
-P downloads \
-i downloads-$(dpkg --print-architecture).txt
-i download.txt
}
```
Depending on your internet connection speed it may take a while to download over `500` megabytes of binaries, and once the download is complete, you can list them using the `ls` command:
@ -78,20 +104,19 @@ Extract the component binaries from the release archives and organize them under
```bash
{
ARCH=$(dpkg --print-architecture)
mkdir -p downloads/{client,cni-plugins,controller,worker}
tar -xvf downloads/crictl-v1.32.0-linux-${ARCH}.tar.gz \
tar -xvf downloads/crictl-${CRI_VERSION}-linux-${ARCH}.tar.gz \
-C downloads/worker/
tar -xvf downloads/containerd-2.1.0-beta.0-linux-${ARCH}.tar.gz \
tar -xvf downloads/containerd-${CONTAINERD_VERSION}-linux-${ARCH}.tar.gz \
--strip-components 1 \
-C downloads/worker/
tar -xvf downloads/cni-plugins-linux-${ARCH}-v1.6.2.tgz \
tar -xvf downloads/cni-plugins-linux-${ARCH}-${CNI_VERSION}.tgz \
-C downloads/cni-plugins/
tar -xvf downloads/etcd-v3.6.0-rc.3-linux-${ARCH}.tar.gz \
tar -xvf downloads/etcd-${ETCD_VERSION}-linux-${ARCH}.tar.gz \
-C downloads/ \
--strip-components 1 \
etcd-v3.6.0-rc.3-linux-${ARCH}/etcdctl \
etcd-v3.6.0-rc.3-linux-${ARCH}/etcd
etcd-${ETCD_VERSION}-linux-${ARCH}/etcdctl \
etcd-${ETCD_VERSION}-linux-${ARCH}/etcd
mv downloads/{etcdctl,kubectl} downloads/client/
mv downloads/{etcd,kube-apiserver,kube-controller-manager,kube-scheduler} \
downloads/controller/
@ -107,9 +132,7 @@ rm -rf downloads/*gz
Make the binaries executable.
```bash
{
chmod +x downloads/{client,cni-plugins,controller,worker}/*
}
chmod +x downloads/{client,cni-plugins,controller,worker}/*
```
### Install kubectl

11
download-template.txt Normal file
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@ -0,0 +1,11 @@
https://dl.k8s.io/${K8S_VERSION}/bin/linux/${ARCH}/kubectl
https://dl.k8s.io/${K8S_VERSION}/bin/linux/${ARCH}/kube-apiserver
https://dl.k8s.io/${K8S_VERSION}/bin/linux/${ARCH}/kube-controller-manager
https://dl.k8s.io/${K8S_VERSION}/bin/linux/${ARCH}/kube-scheduler
https://dl.k8s.io/${K8S_VERSION}/bin/linux/${ARCH}/kube-proxy
https://dl.k8s.io/${K8S_VERSION}/bin/linux/${ARCH}/kubelet
https://github.com/kubernetes-sigs/cri-tools/releases/download/${CRI_VERSION}/crictl-${CRI_VERSION}-linux-${ARCH}.tar.gz
https://github.com/opencontainers/runc/releases/download/${RUNC_VERSION}/runc.${ARCH}
https://github.com/containernetworking/plugins/releases/download/${CNI_VERSION}/cni-plugins-linux-${ARCH}-${CNI_VERSION}.tgz
https://github.com/containerd/containerd/releases/download/v${CONTAINERD_VERSION}/containerd-${CONTAINERD_VERSION}-linux-${ARCH}.tar.gz
https://github.com/etcd-io/etcd/releases/download/${ETCD_VERSION}/etcd-${ETCD_VERSION}-linux-${ARCH}.tar.gz

11
downloads-amd64.txt
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@ -1,11 +0,0 @@
https://dl.k8s.io/v1.32.3/bin/linux/amd64/kubectl
https://dl.k8s.io/v1.32.3/bin/linux/amd64/kube-apiserver
https://dl.k8s.io/v1.32.3/bin/linux/amd64/kube-controller-manager
https://dl.k8s.io/v1.32.3/bin/linux/amd64/kube-scheduler
https://dl.k8s.io/v1.32.3/bin/linux/amd64/kube-proxy
https://dl.k8s.io/v1.32.3/bin/linux/amd64/kubelet
https://github.com/kubernetes-sigs/cri-tools/releases/download/v1.32.0/crictl-v1.32.0-linux-amd64.tar.gz
https://github.com/opencontainers/runc/releases/download/v1.3.0-rc.1/runc.amd64
https://github.com/containernetworking/plugins/releases/download/v1.6.2/cni-plugins-linux-amd64-v1.6.2.tgz
https://github.com/containerd/containerd/releases/download/v2.1.0-beta.0/containerd-2.1.0-beta.0-linux-amd64.tar.gz
https://github.com/etcd-io/etcd/releases/download/v3.6.0-rc.3/etcd-v3.6.0-rc.3-linux-amd64.tar.gz

11
downloads-arm64.txt
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@ -1,11 +0,0 @@
https://dl.k8s.io/v1.32.3/bin/linux/arm64/kubectl
https://dl.k8s.io/v1.32.3/bin/linux/arm64/kube-apiserver
https://dl.k8s.io/v1.32.3/bin/linux/arm64/kube-controller-manager
https://dl.k8s.io/v1.32.3/bin/linux/arm64/kube-scheduler
https://dl.k8s.io/v1.32.3/bin/linux/arm64/kube-proxy
https://dl.k8s.io/v1.32.3/bin/linux/arm64/kubelet
https://github.com/kubernetes-sigs/cri-tools/releases/download/v1.32.0/crictl-v1.32.0-linux-arm64.tar.gz
https://github.com/opencontainers/runc/releases/download/v1.3.0-rc.1/runc.arm64
https://github.com/containernetworking/plugins/releases/download/v1.6.2/cni-plugins-linux-arm64-v1.6.2.tgz
https://github.com/containerd/containerd/releases/download/v2.1.0-beta.0/containerd-2.1.0-beta.0-linux-arm64.tar.gz
https://github.com/etcd-io/etcd/releases/download/v3.6.0-rc.3/etcd-v3.6.0-rc.3-linux-arm64.tar.gz