Cka kubeadm init upgrade - Revision history

Busk at 17:43, 4 January 2025

2025-01-04T17:43:53Z

Busk at 17:42, 4 January 2025

2025-01-04T17:42:39Z

Busk at 16:09, 4 January 2025

2025-01-04T16:09:13Z

Busk at 15:56, 4 January 2025

2025-01-04T15:56:30Z

Busk at 06:56, 4 January 2025

2025-01-04T06:56:08Z

Busk at 06:53, 4 January 2025

2025-01-04T06:53:52Z

Busk at 06:51, 4 January 2025

2025-01-04T06:51:04Z

Busk: Created page with "## Init Ubuntu 24.04 & 22.04 ``` #!/bin/bash set -eu k8s_minor_version=1.31 prep_k8s_node(){ sudo apt update && sudo apt upgrade -y sudo apt install apt-transport-https..."

2025-01-04T06:48:34Z

Created page with "## Init Ubuntu 24.04 & 22.04 ``` #!/bin/bash set -eu k8s_minor_version=1.31 prep_k8s_node(){ sudo apt update && sudo apt upgrade -y sudo apt install apt-transport-https..."

New page

## Init Ubuntu 24.04 & 22.04

```
#!/bin/bash
set -eu

k8s_minor_version=1.31

prep_k8s_node(){
sudo apt update && sudo apt upgrade -y
sudo apt install apt-transport-https curl -y

sudo apt install containerd -y
sudo mkdir -p /etc/containerd
containerd config default | sudo tee /etc/containerd/config.toml > /dev/null
# Instruct containerd to use the Systemd cgroup hierarchy (typically cgroupv2) for managing container resources.
sudo sed -i 's/SystemdCgroup = false/SystemdCgroup = true/' /etc/containerd/config.toml
sudo systemctl restart containerd

curl -fsSL https://pkgs.k8s.io/core:/stable:/v${k8s_minor_version}/deb/Release.key | sudo gpg --dearmor -o /etc/apt/keyrings/kubernetes-apt-keyring.gpg
echo "deb [signed-by=/etc/apt/keyrings/kubernetes-apt-keyring.gpg] https://pkgs.k8s.io/core:/stable:/v${k8s_minor_version}/deb/ /" | sudo tee /etc/apt/sources.list.d/kubernetes.list
sudo apt update
sudo apt install -y kubelet kubeadm kubectl
sudo apt-mark hold kubelet kubeadm kubectl

sudo swapoff -a
sudo sed -i '/ swap / s/^$.*$$/#\1/g' /etc/fstab

# overlay is modprobed by containerd
sudo modprobe br_netfilter
echo -e "br_netfilter" | sudo tee /etc/modules-load.d/k8s.conf
lsmod | grep overlay
lsmod | grep br_netfilter

echo "net.ipv4.ip_forward = 1" | /etc/sysctl.d/k8s.conf
sudo sysctl --system

echo "export KUBECONFIG=/etc/kubernetes/admin.conf" >> ~/.bashrc
sudo reboot
}

prep_k8s_node
```

@@ Line 77: / Line 77: @@
 ```
-## Enable metrics-server api for kubectl top node
+https://kubernetes.io/docs/tasks/administer-cluster/network-policy-provider/cilium-network-policy/
 ```
-helm search hub metrics-server -o yaml
+https://kubernetes.io/docs/tasks/administer-cluster/network-policy-provider/cilium-network-policy/
-helm repo add metrics-server https://kubernetes-sigs.github.io/metrics-server/
+sudo tar xzvfC cilium-linux-amd64.tar.gz /usr/local/bin
-helm install metrics-server metrics-server/metrics-server --set args[0]='--kubelet-insecure-tls'
+rm cilium-linux-amd64.tar.gz
 ```
@@ Line 91: / Line 93: @@
 ```
-## Cilium
+## Enable metrics-server api for kubectl top node
 ```
-https://kubernetes.io/docs/tasks/administer-cluster/network-policy-provider/cilium-network-policy/
+helm search hub metrics-server -o yaml
-sudo tar xzvfC cilium-linux-amd64.tar.gz /usr/local/bin
+helm repo add metrics-server https://kubernetes-sigs.github.io/metrics-server/
-rm cilium-linux-amd64.tar.gz
+helm install metrics-server metrics-server/metrics-server --set args[0]='--kubelet-insecure-tls'
 ```

← Older revision		Revision as of 17:42, 4 January 2025
Line 75:		Line 75:
	kubeadm init --apiserver-advertise-address <local ip>		kubeadm init --apiserver-advertise-address <local ip>

		+	```
		+
		+
		+	## Enable metrics-server api for kubectl top node
		+
		+	```
		+	helm search hub metrics-server -o yaml
		+	helm repo add metrics-server https://kubernetes-sigs.github.io/metrics-server/
		+	helm install metrics-server metrics-server/metrics-server --set args[0]='--kubelet-insecure-tls'
	```		```

@@ Line 69: / Line 69: @@
 https://kubernetes.io/docs/setup/production-environment/tools/kubeadm/create-cluster-kubeadm/#initializing-your-control-plane-node
 ```
 ```
-# Join worker node
+## Join worker node
 ```
-kubeadm init
+kubeadm join
 ```

@@ Line 1: / Line 1: @@
-## Init Ubuntu 24.04 & 22.04
+## Prep Ubuntu 24.04 & 22.04 Node
 ```
@@ Line 43: / Line 43: @@
 prep_k8s_node
 ```

@@ Line 11: / Line 11: @@
    sudo apt install apt-transport-https curl -y
    sudo apt install containerd -y
    sudo mkdir -p /etc/containerd
@@ Line 20: / Line 21: @@
    sudo sysctl --system
    curl -fsSL https://pkgs.k8s.io/core:/stable:/v${k8s_minor_version}/deb/Release.key | sudo gpg --dearmor -o /etc/apt/keyrings/kubernetes-apt-keyring.gpg
    echo "deb [signed-by=/etc/apt/keyrings/kubernetes-apt-keyring.gpg] https://pkgs.k8s.io/core:/stable:/v${k8s_minor_version}/deb/ /" | sudo tee /etc/apt/sources.list.d/kubernetes.list
@@ Line 30: / Line 32: @@
    sudo sed -i '/ swap / s/^\(.*\)$/#\1/g' /etc/fstab
-   # overlay is modprobed by containerd
+   # overlay is already modprobed by containerd
    sudo modprobe br_netfilter
    echo -e "br_netfilter" | sudo tee /etc/modules-load.d/k8s.conf

@@ Line 17: / Line 17: @@
    sudo sed -i 's/SystemdCgroup = false/SystemdCgroup = true/' /etc/containerd/config.toml
    sudo systemctl restart containerd
    curl -fsSL https://pkgs.k8s.io/core:/stable:/v${k8s_minor_version}/deb/Release.key | sudo gpg --dearmor -o /etc/apt/keyrings/kubernetes-apt-keyring.gpg
@@ Line 33: / Line 35: @@
    lsmod | grep overlay
    lsmod | grep br_netfilter
    echo "export KUBECONFIG=/etc/kubernetes/admin.conf" >> ~/.bashrc

@@ Line 24: / Line 24: @@
    sudo apt-mark hold kubelet kubeadm kubectl
    sudo swapoff -a
    sudo sed -i '/ swap / s/^\(.*\)$/#\1/g' /etc/fstab