Installing Kubernetes

The SLATE platform uses Kubernetes as its container orchestration system. This section we’ll install the base Kubernetes software components.

Kubernetes

The Kubernetes repository can be added to the node in the usual way:

export KUBE_VERSION=1.28 && \
cat <<EOF | tee /etc/yum.repos.d/kubernetes.repo
[kubernetes]
name=Kubernetes
baseurl=https://pkgs.k8s.io/core:/stable:/v${KUBE_VERSION}/rpm/
enabled=1
gpgcheck=1
gpgkey=https://pkgs.k8s.io/core:/stable:/v${KUBE_VERSION}/rpm/repodata/repomd.xml.key
EOF

The Kubernetes install includes a few different pieces: kubeadm, kubectl, and kubelet.

• kubeadm is a tool used to bootstrap Kubernetes clusters
• kubectl is the command-line tool needed to interact with and control the cluster
• kubelet is the system daemon that allows the Kubernetes api to control the cluster nodes

Install and enable these components:

yum install -y kubeadm kubectl kubelet

Finish Up

Finally, enable kubelet:

systemctl enable --now kubelet

At this point the kubelet will be crash-looping as it has no configuration. That is okay for now.

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