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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