准备服务器
3台Linux主机，2核4G，50G硬盘
| 内网IP（可互相ssh） | hostname |
|---|---|
| 10.206.0.17 | master |
| 10.206.0.12 | node1 |
| 10.206.0.16 | node2 |
初始化安装环境
systemctl stop firewalld
systemctl disable firewalld
sed -i 's/enforcing/disabled/' /etc/selinux/config
sed -ri 's/.*swap.*/#&/' /etc/fstab
cat > /etc/sysctl.d/k8s.conf << EOF
net.bridge.bridge-nf-call-ip6tables = 1
net.bridge.bridge-nf-call-iptables = 1
EOF
sysctl --system
yum install ntpdate -y
ntpdate time.windows.com安装依赖
更新yum源
mv /etc/yum.repos.d/CentOS-Base.repo /etc/yum.repos.d/CentOS-Base.repo_bak
wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-7.repo
wget -O /etc/yum.repos.d/epel.repo http://mirrors.aliyun.com/repo/epel-7.repo
yum clean all
yum makecache
yum update -y
#查看当前yum源
yum repolist安装依赖
yum install -y socat
yum install -y conntrack配置阿里镜像加速
设置仓库地址：https://help.aliyun.com/docum...
cat > /etc/docker/daemon.json << EOF
{
"registry-mirrors": ["https://xxx.mirror.aliyuncs.com"]
}
EOF添加阿里源
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
epo_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多节点安装
拉取KubeKey
export KKZONE=cn
curl -sfL https://get-kk.kubesphere.io | VERSION=v1.1.1 sh -
chmod +x kk创建配置文件
./kk create config --with-kubernetes v1.20.4 --with-kubesphere v3.1.1编辑配置文件
apiVersion: kubekey.kubesphere.io/v1alpha1
kind: Cluster
metadata:
name: sample
spec:
hosts:
- {name: master, address: 10.206.0.17, internalAddress: 10.206.0.17, user: root, password: 123456}
- {name: node1, address: 10.206.0.12, internalAddress: 10.206.0.12, user: root, password: 123456}
- {name: node2, address: 10.206.0.16, internalAddress: 10.206.0.16, user: root, password: 123456}
roleGroups:
etcd:
- master
master:
- master
worker:
- node1
- node2开始安装
./kk create cluster -f config-sample.yaml安装完成
常见问题
1.服务器重启后kubelet无法启动
kubectl get nodes
The connection to the server lb.kubesphere.local:6443 was refused - did you specify the right host or port?查看日志
journalctl -xefu kubelet
#异常信息
Aug 28 14:36:33 VM-0-17-centos kubelet[9055]: F0828 14:36:33.316089 9055 server.go:265] failed to run Kubelet: misconfiguration: kubelet cgroup driver: "systemd" is different from docker cgroup driver: "cgroupfs"解决方法：
vim /var/lib/kubelet/config.yaml
#修改配置
cgroupDriver: cgroupfs