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K8s搭建文档v1.8 ​

准备工作 ​

  • 关闭防火墙
shell
systemctl stop firewalld
systemctl disable firewalld
  • 关闭selinux
shell
# 永久关闭
sed -i 's/enforcing/disabled/' /etc/selinux/config  
# 临时关闭
setenforce 0
  • 关闭swap
shell
# 临时
swapoff -a 
# 永久关闭
sed -ri 's/.*swap.*/#&/' /etc/fstab
  • 设置hostname
shell
hostnamectl set-hostname k8smaster
hostnamectl set-hostname k8snode1
hostnamectl set-hostname k8snode2
  • 添加host
shell
cat >> /etc/hosts << EOF
192.168.153.201 k8smaster
192.168.153.202 k8snode1
192.168.153.203 k8snode2
EOF
  • 将桥接的IPv4流量传递到iptables的链
shell
cat > /etc/sysctl.d/k8s.conf << EOF
net.bridge.bridge-nf-call-ip6tables = 1
net.bridge.bridge-nf-call-iptables = 1
EOF
# 生效
sysctl --system
  • 时间同步
shell
yum install ntpdate -y
ntpdate time.windows.com

安装Docker ​

  • 首先配置一下Docker的阿里yum源
shell
cat >/etc/yum.repos.d/docker.repo<<EOF
[docker-ce-edge]
name=Docker CE Edge - \$basearch
baseurl=https://mirrors.aliyun.com/docker-ce/linux/centos/7/\$basearch/edge
enabled=1
gpgcheck=1
gpgkey=https://mirrors.aliyun.com/docker-ce/linux/centos/gpg
EOF
  • 然后yum方式安装docker
shell
# yum安装
yum -y install docker-ce

# 查看docker版本
docker --version  

# 启动docker
systemctl enable docker
systemctl start docker
  • 配置docker的镜像源
shell
cat >> /etc/docker/daemon.json << EOF
{
  "registry-mirrors": ["https://b9pmyelo.mirror.aliyuncs.com"]
}
EOF
  • 重启docker
shell
systemctl reload docker
systemctl restart docker

安装kubeadm，kubelet和kubectl ​

  • 添加kubernetes软件源
shell
cat > /etc/yum.repos.d/kubernetes.repo << EOF
[kubernetes]
name=Kubernetes
baseurl=https://mirrors.aliyun.com/kubernetes/yum/repos/kubernetes-el7-x86_64
enabled=1
gpgcheck=0
repo_gpgcheck=0
gpgkey=https://mirrors.aliyun.com/kubernetes/yum/doc/yum-key.gpg https://mirrors.aliyun.com/kubernetes/yum/doc/rpm-package-key.gpg
EOF
  • 安装kubeadm，kubelet和kubectl
shell
# 安装kubelet、kubeadm、kubectl，同时指定版本
yum install -y kubelet-1.18.0 kubeadm-1.18.0 kubectl-1.18.0
# 设置开机启动
systemctl enable kubelet
  • 部署Kubernetes Master【master节点】
shell
kubeadm init --apiserver-advertise-address=192.168.153.201 --image-repository registry.aliyuncs.com/google_containers --kubernetes-version v1.18.0 --service-cidr=10.96.0.0/12  --pod-network-cidr=10.244.0.0/16
  • 加入Kubernetes Node【Slave节点】
shell
kubeadm join 192.168.153.201:6443 --token e4f6ri.56mfq1ep53lgl0zv     --discovery-token-ca-cert-hash sha256:f437af9c658650c6ba036e79acd0f1ba0a51f0ed98fa32f254f0fc5e6b1e06b0

部署CNI网络插件 ​

shell
wget https://raw.githubusercontent.com/coreos/flannel/master/Documentation/kube-flannel.yml

kubectl apply -f calico.yaml

安装Calico网络插件 ​

shell
curl https://docs.projectcalico.org/manifests/calico.yaml -O

kubectl apply -f calico.yaml