軟體安裝參照它囉~~
How to set up a Kubernetes cluster on-premise with kubeadm?
Step 1: The container runtime
curl -fsSL https://get.docker.com -o get-docker.sh
sudo sh get-docker.sh
Step 2: Installing kubeadm
To disable swap, you will need to:
Run swapoff -a
Open /etc/fstab file
Remove any swap entry for the file
Then, we can install all the components we will need to configure our cluster:
sudo apt-get update && sudo apt-get install -y apt-transport-https curl
curl -s https://packages.cloud.google.com/apt/doc/apt-key.gpg | sudo apt-key add -
cat <<EOF | sudo tee /etc/apt/sources.list.d/kubernetes.list
deb https://apt.kubernetes.io/ kubernetes-xenial main
EOF
sudo apt-get update
# Install components
sudo apt-get install -y kubelet kubeadm kubectl
# Hold version
sudo apt-mark hold kubelet kubeadm kubectl
Step III Initial Cluster
kubeadm init --kubernetes-version=1.20.2 --ignore-preflight-errors=all --service-cidr 192.168.57.0/24 --pod-network-cidr 172.16.0.0/16 --apiserver-advertise-address 192.168.58.10
注意看你的畫面,有些指令非常重要
To start using your cluster, you need to run the following as a regular user:
mkdir -p $HOME/.kube
sudo cp -i /etc/kubernetes/admin.conf $HOME/.kube/config
sudo chown $(id -u):$(id -g) $HOME/.kube/config
Alternatively, if you are the root user, you can run:
export KUBECONFIG=/etc/kubernetes/admin.conf
上述指令不做,根本連kubectl 指令都沒辦法運作
記得把這一行指令拷貝下來,你的環境一定跟我不一樣啦~~
kubeadm join 192.168.58.10:6443 --token soktmz.d0vwvz57to497w6p \
--discovery-token-ca-cert-hash sha256:5e1a615b4e4e474dcedd979f9d8b7cfa37691a32b15885072c765a51975d18c5
最後把 CNI 安裝上去 ,我也不是很清楚它是什麼?
我只知道是它內部的網路架構軟體
kubectl apply -f https://raw.githubusercontent.com/coreos/flannel/master/Documentation/kube-flannel.yml
然後觀察node的狀態
然後再到各worker node執行那一段join cluster 的command
安裝好啦~~
這沒什麼好藏私的~~ 因為難的是...怎麼使用它....哈!!