Ubuntu安装kubeadm kubelet kubectl
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curl https://mirrors.aliyun.com/kubernetes/apt/doc/apt-key.gpg apt-key add - - vim /etc/apt/sources.list.d/kubernetes.list deb https://mirrors.aliyun.com/kubernetes/apt/ kubernetes-xenial main
- apt-get update
- apt-get install -y kubelet kubeadm kubect
- 安装kubenetes核心组件
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docker pull registry.cn-hangzhou.aliyuncs.com/google_containers/kube-controller-manager:v1.17.3 docker pull registry.cn-hangzhou.aliyuncs.com/google_containers/kube-scheduler:v1.17.3 docker pull registry.cn-hangzhou.aliyuncs.com/google_containers/kube-proxy:v1.17.3 docker pull registry.cn-hangzhou.aliyuncs.com/google_containers/pause:3.1 docker pull registry.cn-hangzhou.aliyuncs.com/google_containers/etcd:3.4.3-0 docker pull registry.cn-hangzhou.aliyuncs.com/google_containers/coredns:1.6.5 docker pull registry.cn-hangzhou.aliyuncs.com/google_containers/kube-apiserver:v1.17.3
- 替换docker镜像tag
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docker tag registry.cn-hangzhou.aliyuncs.com/google_containers/kube-controller-manager:v1.17.3 k8s.gcr.io/kube-controller-manager:v1.17.3 docker tag registry.cn-hangzhou.aliyuncs.com/google_containers/kube-scheduler:v1.17.3 k8s.gcr.io/kube-scheduler:v1.17.3 docker tag registry.cn-hangzhou.aliyuncs.com/google_containers/kube-proxy:v1.17.3 k8s.gcr.io/kube-proxy:v1.17.3 docker tag registry.cn-hangzhou.aliyuncs.com/google_containers/pause:3.1 k8s.gcr.io/pause:3.1 docker tag registry.cn-hangzhou.aliyuncs.com/google_containers/etcd:3.4.3-0 k8s.gcr.io/etcd:3.4.3-0 docker tag registry.cn-hangzhou.aliyuncs.com/google_containers/coredns:1.6.5 k8s.gcr.io/coredns:1.6.5 docker tag registry.cn-hangzhou.aliyuncs.com/google_containers/kube-apiserver:v1.17.3 k8s.gcr.io/kube-apiserver:v1.17.3
- 【选项】如果之前安装不成功，执行一下命令重置
kubeadm reset - 初始化master节点，
apiserver-advertise-address为本地节点kubeadm init --pod-network-cidr=192.168.16.0/20 --apiserver-advertise-address=10.0.2.5 --ignore-preflight-errors=Swap - 【选项】如果上面提示swap需要关闭错误，操作以下命令
vim /etc/fstab，然后将/dev/mapper/cryptswap1 none swap sw 0 0进行注解 - 记录下该句，重要；用于工作节点加入
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kubeadm join 10.0.2.5:6443 --token 6zhllo.ua4oxad15k1ahbgd \ --discovery-token-ca-cert-hash sha256:160a884e3cf04c5afa86fc399d0e73eb2e904fed117b05113c0091045064bde9
- 设置KUBECONFIG环境变量vim .bashrc
export KUBECONFIG='/etc/kubernetes/admin.conf'
辅助命令
查看日志 journalctl -f -u kubelet.service
永久修改主机名 vi /etc/hostname
关闭swap vim /etc/fstab
安装flannel 网络插件 yaml文件见该GitHub https://github.com/coreos/flannel/find/master
放到本地后使用以下命令 kubectl apply -f kube-fannel.yml
//修改工作节点访问其他节点
- 将master节点 scp admin.conf root@10.0.2.8:/etc/kubernetes/
- 进入工作节点 vim .bashrc
- 将该句加在最后一行 export KUBECONFIG=’/etc/kubernetes/admin.conf’
- 将参数生效 source .bashrc
查看命名空间kube-system的pods kubectl get pods -n kube-system -o wide
查看pod日志 kubectl logs -f kubernetes-dashboard-74c96fd8ff-vcxrn -n kube-system
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