How to Upgrade containerd in Kubernetes
Introduction Containerd is a core component of Kubernetes that manages container lifecycle. Upgrading containerd can bring performance improvements, bug fixes, and new features. This guide will walk you through the steps to upgrade Containerd on a Kubernetes node. Deployment Script CURRENT_VERSION="v2.1.3" ARCH="linux-amd64" DOWNLOAD_URL="https://github.com/containerd/containerd/releases/download/${CURRENT_VERSION}/containerd-${CURRENT_VERSION#v}-${ARCH}.tar.gz" echo "Draining node..." kubectl drain $(hostname) --ignore-daemonsets --delete-emptydir-data echo "Stopping containerd..." sudo systemctl stop containerd echo "Removing old containerd..." sudo apt remove -y containerd echo "Downloading containerd $CURRENT_VERSION..." wget -q $DOWNLOAD_URL -O containerd.tar.gz echo "Extracting and installing containerd..." tar -xvf containerd.tar.gz sudo cp bin/* /usr/local/bin/ echo "Setting up systemd service..." sudo systemctl unmask containerd sudo wget -q -O /etc/systemd/system/containerd.service https://raw.githubusercontent.com/containerd/containerd/main/containerd.service sudo systemctl daemon-reexec sudo systemctl daemon-reload sudo systemctl enable --now containerd echo "Generating config and setting SystemdCgroup..." sudo mkdir -p /etc/containerd sudo bash -c "containerd config default > /etc/containerd/config.toml" sudo sed -i 's/SystemdCgroup = false/SystemdCgroup = true/' /etc/containerd/config.toml echo "Restarting containerd and kubelet..." sudo systemctl restart containerd sudo systemctl restart kubelet echo "Updated. Current containerd version:" containerd --version