K8S环境安装

安装

curl -LO "https://dl.k8s.io/release/$(curl -L -s https://dl.k8s.io/release/stable.txt)/bin/linux/amd64/kubectl"
sudo install -o root -g root -m 0755 kubectl /usr/local/bin/kubectl
kubectl version --client

搭建环境

修改hostname

#k8s-master
radish ➜ ~  cat /etc/hostname 
k8s-masterradish 
➜ ~  cat /etc/hosts | grep k8s
10.211.55.7 k8s-master
10.211.55.9 k8s-worker

#k8s-wirker
❯ cat /etc/hostname        
k8s-worker
~❯ cat /etc/hosts | grep k8s
10.211.55.7 k8s-master
10.211.55.9 k8s-worke

禁用交换分区

~  cat /etc/fstab 
# /etc/fstab: static file system information.
#
# Use 'blkid' to print the universally unique identifier for a
# device; this may be used with UUID= as a more robust way to name devices
# that works even if disks are added and removed. See fstab(5).
#
# <file system> <mount point>   <type>  <options>       <dump>  <pass>
# / was on /dev/sda1 during installation
UUID=25559f82-b8b2-4983-9223-ff1c2cb36099 /               ext4    errors=remount-ro 0       1
#/swapfile                                 none            swap    sw              0       0

安装kubelet kubeadm kubectl

echo "deb [signed-by=/usr/share/keyrings/kubernetes-archive-keyring.gpg] http://mirrors.ustc.edu.cn/kubernetes/apt kubernetes-xenial main" | sudo tee /etc/apt/sources.list.d/kubernetes.list
sudo apt-get update
sudo apt-get install -y kubelet kubeadm kubectl

master操作

生成初始化文件

kubeadm config print init-defaults > kubeadm-init.yaml
kubeadm init --config kubeadm-init.yaml

kubeadm join 10.211.55.7:6443 --token abcdef.0123456789abcdef \
        --discovery-token-ca-cert-hash sha256:c181874c3695bba453a696928392bfc7b40cdf90f0d105f24f2d057305b320ae