Kubeadm upgrade nodes - Revision history

Busk at 20:59, 8 August 2025

2025-08-08T20:59:51Z

Busk at 20:56, 8 August 2025

2025-08-08T20:56:32Z

Busk at 20:30, 8 August 2025

2025-08-08T20:30:26Z

Busk at 16:53, 27 December 2024

2024-12-27T16:53:20Z

Busk at 10:07, 23 December 2024

2024-12-23T10:07:19Z

Busk at 09:46, 23 December 2024

2024-12-23T09:46:11Z

Busk at 09:43, 23 December 2024

2024-12-23T09:43:57Z

Busk at 09:43, 23 December 2024

2024-12-23T09:43:15Z

Busk: Created page with "``` #!/bin/bash # Update the package lists sudo apt update # Install the Kubernetes packages, specifying the desired version sudo apt install -y kubelet=1.31.* kubeadm=1.31...."

2024-12-23T04:23:15Z

Created page with "``` #!/bin/bash # Update the package lists sudo apt update # Install the Kubernetes packages, specifying the desired version sudo apt install -y kubelet=1.31.* kubeadm=1.31...."

New page

```
#!/bin/bash

# Update the package lists
sudo apt update

# Install the Kubernetes packages, specifying the desired version
sudo apt install -y kubelet=1.31.* kubeadm=1.31.* kubectl=1.31.*

# Restart kubelet service
sudo systemctl restart kubelet

apt-get upgrade
# Verify node status
kubectl get nodes -o wide

# Optional: Drain the node before upgrading to avoid disruptions
# kubectl drain <node-name> --ignore-daemon-sets --force --delete-local-data

# Optional: Upgrade other node components (e.g., containerd, Docker)
# - Follow the specific upgrade instructions for your container runtime

# Note:
# - This script assumes you have the Kubernetes repository configured in your system.
# - This script uses wildcards to install the latest patch version within the 1.31 series.
# - This script performs a rolling update. Consider draining nodes for zero-downtime upgrades.
# - Always back up critical data before performing any upgrades.
# - Refer to the official Kubernetes documentation for the most up-to-date instructions.

```

@@ Line 199: / Line 199: @@
    sudo apt-mark hold kubeadm kubectl kubelet && \
    sudo systemctl restart kubelet
    sudo apt-get -y dist-upgrade
    kubeadm version -o short

@@ Line 28: / Line 28: @@
 # ====== Helpers ======
 node_name() { hostname -s; }
 drain_node() {
@@ Line 95: / Line 114: @@
    echo "[k8s] Running 'kubeadm upgrade node'"
    sudo kubeadm upgrade node
    echo "[k8s] Restarting kubelet"
    sudo systemctl daemon-reload
@@ Line 152: / Line 175: @@
 echo "[done] Node ${NODE} upgrade complete"
 ```
 # Almost but doesn't do the kubeadm upgrade

@@ Line 7: / Line 7: @@
 - uncordon node
 - update_kubeadm_version on all other nodes starting with controllers first
 update.sh

@@ Line 37: / Line 37: @@
    echo "Updating to version ${k8s_patch_version} in 10 seconds."; sleep 10
    sudo kubeadm upgrade plan
    kubeadm upgrade apply -y ${k8s_patch_version}
+}

@@ Line 27: / Line 27: @@
    sudo systemctl restart kubelet
    sudo apt-get -y dist-upgrade
    sudo reboot
+}

← Older revision		Revision as of 09:46, 23 December 2024
Line 2:		Line 2:

	- https://kubernetes.io/docs/tasks/administer-cluster/kubeadm/kubeadm-upgrade/		- https://kubernetes.io/docs/tasks/administer-cluster/kubeadm/kubeadm-upgrade/
		+
		+	- Drain node
		+	- On primary update_kubeadm_version then kubeadm_upgrade
		+	- uncordon node
		+	- update_kubeadm_version on all other nodes starting with controllers first

	update.sh		update.sh

@@ Line 1: / Line 1: @@
 # New
 ```
 update_kubeadm_version(){
    k8s_minor_version=1.31

← Older revision		Revision as of 09:43, 23 December 2024
Line 1:		Line 1:
		+	# New
		+	```
		+	update_kubeadm_version(){
		+	k8s_minor_version=1.31
		+	k8s_keyring_file="/etc/apt/keyrings/kubernetes-apt-keyring.gpg"
		+	if [ ! -f "${k8s_keyring_file}" ]; then
		+	curl -fsSL https://pkgs.k8s.io/core:/stable:/v${k8s_minor_version}/deb/Release.key 2>/dev/null \| sudo gpg --dearmor -o ${k8s_keyring_file}
		+	fi
		+	echo "deb [signed-by=/etc/apt/keyrings/kubernetes-apt-keyring.gpg] https://pkgs.k8s.io/core:/stable:/v${k8s_minor_version}/deb/ /" \| sudo tee /etc/apt/sources.list.d/kubernetes.list
		+	sudo apt-get update
		+
		+	sudo apt-mark unhold kubeadm kubectl kubelet && \
		+	sudo apt-get install -y kubelet=${k8s_minor_version}.* kubeadm=${k8s_minor_version}.* kubectl=${k8s_minor_version}.* && \
		+	sudo apt-mark hold kubeadm kubectl kubelet && \
		+	sudo systemctl restart kubelet
		+	sudo apt-get -y dist-upgrade
		+	sudo reboot
		+	}
		+
		+
		+	kubeadm_upgrade_primary_controller(){
		+	k8s_patch_version=$(kubeadm version -o short)
		+	echo "Updating to version ${k8s_patch_version} in 10 seconds."; sleep 10
		+	sudo kubeadm upgrade plan
		+	kubeadm upgrade apply -y ${k8s_patch_version}
		+	}
		+
		+	```
		+
		+
		+
		+	# Old
		+
	```		```
	#!/bin/bash		#!/bin/bash