上次安装Kubernetes v1.11.0遇到问题，kubeadm init总过不去，现在v1.11.1版本发布了，试了一下，可以正常安装了，安装过程与v1.10.5基本相同，可以参考原文章Kubernetes v1.10.5安装。
1. 主机配置
简单写在一起了，包含关闭firewall、swap、selinux，开启内核参数，启用bash补全
sudo systemctl stop firewalld sudo systemctl disable firewalld sudo swapoff -a sudo sed -i '/ swap / s/^\(.*\)$/#\1/g' /etc/fstab sudo setenforce 0 sed -i s/SELINUX=enforcing/SELINUX=disabled/g /etc/selinux/config cat <<EOF > /etc/sysctl.d/k8s.conf net.bridge.bridge-nf-call-ip6tables = 1 net.bridge.bridge-nf-call-iptables = 1 EOF sysctl --system yum install bash-completion -y echo "source <(kubectl completion bash)" >> ~/.bashrc
2. 下载Kubernetes镜像
从mirrorgooglecontainers源下载镜像（CoreDNS已正式上线，代替原来kube-dns组件）
docker pull mirrorgooglecontainers/kube-apiserver-amd64:v1.11.1 docker pull mirrorgooglecontainers/kube-scheduler-amd64:v1.11.1 docker pull mirrorgooglecontainers/kube-proxy-amd64:v1.11.1 docker pull mirrorgooglecontainers/kube-controller-manager-amd64:v1.11.1 docker pull mirrorgooglecontainers/pause-amd64:3.1 docker pull mirrorgooglecontainers/etcd-amd64:3.2.18 docker pull coredns/coredns:1.1.3 docker pull quay.io/coreos/flannel:v0.10.0-amd64
将镜像标记为k8s.gcr.io的名称
docker tag mirrorgooglecontainers/kube-apiserver-amd64:v1.11.1 k8s.gcr.io/kube-apiserver-amd64:v1.11.1 docker tag mirrorgooglecontainers/kube-scheduler-amd64:v1.11.1 k8s.gcr.io/kube-scheduler-amd64:v1.11.1 docker tag mirrorgooglecontainers/kube-proxy-amd64:v1.11.1 k8s.gcr.io/kube-proxy-amd64:v1.11.1 docker tag mirrorgooglecontainers/kube-controller-manager-amd64:v1.11.1 k8s.gcr.io/kube-controller-manager-amd64:v1.11.1 docker tag mirrorgooglecontainers/pause-amd64:3.1 k8s.gcr.io/pause:3.1 docker tag mirrorgooglecontainers/etcd-amd64:3.2.18 k8s.gcr.io/etcd-amd64:3.2.18 docker tag coredns/coredns:1.1.3 k8s.gcr.io/coredns:1.1.3
删除无用镜像名
docker images | grep mirrorgooglecontainers | awk '{print "docker rmi "$1":"$2}' | sh
docker rmi coredns/coredns:1.1.3
安装、配置kubelet
cat <<EOF > /etc/yum.repos.d/kubernetes.repo [kubernetes] name=Kubernetes baseurl=https://mirrors.aliyun.com/kubernetes/yum/repos/kubernetes-el7-x86_64/ enabled=1 gpgcheck=1 repo_gpgcheck=1 gpgkey=https://mirrors.aliyun.com/kubernetes/yum/doc/yum-key.gpg https://mirrors.aliyun.com/kubernetes/yum/doc/rpm-package-key.gpg EOF yum install -y kubelet-1.11.1 kubeadm-1.11.1 kubectl-1.11.1 systemctl enable kubelet systemctl start kubelet
3. 初始化k8s集群
指定kubernetes-version版本，由于有墙。token-ttl默认有效为24小时，改为0为永久有效。设置pod-network-cidr为flannel做准备。
kubeadm init --kubernetes-version v1.11.1 --token-ttl 0 \ --pod-network-cidr 10.244.0.0/16
复制admin配置文件
mkdir -p $HOME/.kube sudo cp -i /etc/kubernetes/admin.conf $HOME/.kube/config sudo chown $(id -u):$(id -g) $HOME/.kube/config
配置flannel网络插件
curl -O https://raw.githubusercontent.com/coreos/flannel/master/Documentation/kube-flannel.yml kubectl apply -f kube-flannel.yml
4. 确认kubernetes运行状态
kubectl get pods --all-namespaces
所有容器都运行时即部署完成
NAMESPACE NAME READY STATUS RESTARTS AGE kube-system coredns-78fcdf6894-j2xwq 1/1 Running 0 1m kube-system coredns-78fcdf6894-sn28d 1/1 Running 0 2m kube-system etcd-k8s1.test.local 1/1 Running 0 1m kube-system kube-apiserver-k8s1.test.local 1/1 Running 0 1m kube-system kube-controller-manager-k8s1.test.local 1/1 Running 0 1m kube-system kube-flannel-ds-amd64-zkgkb 1/1 Running 0 1m kube-system kube-proxy-7r8zc 1/1 Running 0 2m kube-system kube-scheduler-k8s1.test.local 1/1 Running 0 1m