Lab 4.2 - containerd rather than docker
Is there a guide to using containerd rather than docker for running containers given it'll be removed in 1.24 and this lab currently uses 1.23?
https://kubernetes.io/blog/2022/01/07/kubernetes-is-moving-on-from-dockershim/
"LFS260/SOLUTIONS/s_04/k8scp.sh" sets up kubernetes using docker rather than containerd
Thanks!
Best Answers
-
Fixed this by doing the following to both LFS260/SOLUTIONS/s_04/k8scp.sh and LFS260/SOLUTIONS/s_04/k8sWorker.sh
Remove the following section
and adding the following instead
- echo "Install and configure containerd"
- sleep 2
- sudo mkdir -p /etc/containerd
- sudo apt install -y containerd
- sudo containerd config default | sudo tee /etc/containerd/config.toml
- sudo systemctl restart containerd
- sudo systemctl enable containerd
and changing
- sudo apt-get install -y kubeadm=1.23.1-00 kubelet=1.23.1-00 kubectl=1.23.1-00
to
- sudo apt-get install -y kubeadm=1.23.1-00 kubelet=1.23.1-00 kubectl=1.23.1-00 --allow-downgrades --allow-change-held-packages
due to some issues with the node I was using.
I hope this helps!
0 -
Fixed this by doing the following tto LFS260/SOLUTIONS/s_04/k8scp.sh
Remove the following section
- echo "Install and configure Docker"
- sleep 2
- sudo apt-get install -y docker.io
- cat <<EOF | sudo tee /etc/docker/daemon.json
- {
- "exec-opts": ["native.cgroupdriver=systemd"],
- "log-driver": "json-file",
- "log-opts": {
- "max-size": "100m"
- },
- "storage-driver": "overlay2"
- }
- EOF
- sudo systemctl enable docker
- sudo systemctl daemon-reload
- sudo systemctl restart docker
and adding the following instead
- echo "Install and configure containerd"
- sleep 2
- sudo mkdir -p /etc/containerd
- sudo apt install -y containerd
- sudo containerd config default | sudo tee /etc/containerd/config.toml
- sudo systemctl restart containerd
- sudo systemctl enable containerd
and changing
- sudo apt-get install -y kubeadm=1.23.1-00 kubelet=1.23.1-00 kubectl=1.23.1-00
to
- sudo apt-get install -y kubeadm=1.23.1-00 kubelet=1.23.1-00 kubectl=1.23.1-00 --allow-downgrades --allow-change-held-packages
finally, change
- sudo kubeadm init --kubernetes-version 1.23.1 --pod-network-cidr 192.168.0.0/16 --cri-socket "unix:///var/run/containerd/containerd.sock"
to
- sudo kubeadm init --kubernetes-version 1.23.1 --pod-network-cidr 192.168.0.0/16 --cri-socket "unix:///var/run/containerd/containerd.sock"
For LFS260/SOLUTIONS/s_04/k8sWorker.sh
Remove the following section
- echo "Install and configure Docker"
- sleep 2
- sudo apt-get install -y docker.io
- cat <<EOF | sudo tee /etc/docker/daemon.json
- {
- "exec-opts": ["native.cgroupdriver=systemd"],
- "log-driver": "json-file",
- "log-opts": {
- "max-size": "100m"
- },
- "storage-driver": "overlay2"
- }
- EOF
- sudo systemctl enable docker
- sudo systemctl daemon-reload
- sudo systemctl restart docker
and adding the following instead
- echo "Install and configure containerd"
- sleep 2
- sudo mkdir -p /etc/containerd
- sudo apt install -y containerd
- sudo containerd config default | sudo tee /etc/containerd/config.toml
- sudo systemctl restart containerd
- sudo systemctl enable containerd
and changing
- sudo apt-get install -y kubeadm=1.23.1-00 kubelet=1.23.1-00 kubectl=1.23.1-00
to
- sudo apt-get install -y kubeadm=1.23.1-00 kubelet=1.23.1-00 kubectl=1.23.1-00 --allow-downgrades --allow-change-held-packages
Finally, when running the kubeadm join command, add
--cri-socket "unix:///var/run/containerd/containerd.sock"
Eg
```bash
sudo kubeadm join 172.31.254.12:6443 --token super.token --discovery-token-ca-cert-hash sha256:superCA --cri-socket "unix:///var/run/containerd/containerd.sock"
I hope this helps!
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