kubernetes单节点安装

系统环境为Centos7

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$ systemctl stop firewalld
$ systemctl disable firewalld
$ vim /etc/sysconfig/selinux
SELINUX=enforcing

#有需要开启此选项
$ echo 1 > /proc/sys/net/bridge/bridge-nf-call-iptables
$ echo 1 > /proc/sys/net/bridge/bridge-nf-call-ip6tables

1. 下载安装

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   #尽量安装官方ce版本，centos默认yum里的docker版本过低，不能编译dockerfile。 $ yum install -y docker-ce $ systemctl enable docker && systemctl start docker #修改docker拉取镜像源 $ vim /etc/docker/daemon.json {  "registry-mirrors": ["https://registry.docker-cn.com","https://4e9n046r.mirror.aliyuncs.com","http://8618acef.m.daocloud.io"]  } $ systemctl daemon-reload && systemctl restart docker $ yum install -y kubelet kubeadm kubectl kubernetes-cni $ systemctl enable kubelet && systemctl start kubelet

2. 拉取所需要的镜像
   

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   #拉取镜像，重命名为 gcr.io/google_containers 开头，以共kubeadm使用 $ docker pull warrior/pause-amd64:3.0 && docker tag warrior/pause-amd64:3.0 gcr.io/google_containers/pause-amd64:3.0 $ docker pull warrior/etcd-amd64:3.0.17 && docker tag warrior/etcd-amd64:3.0.17 gcr.io/google_containers/etcd-amd64:3.0.17 $ docker pull warrior/kube-apiserver-amd64:v1.6.0 && docker tag warrior/kube-apiserver-amd64:v1.6.0 gcr.io/google_containers/kube-apiserver-amd64:v1.6.0 $ docker pull warrior/kube-scheduler-amd64:v1.6.0 && docker tag warrior/kube-scheduler-amd64:v1.6.0 gcr.io/google_containers/kube-scheduler-amd64:v1.6.0 $ docker pull warrior/kube-controller-manager-amd64:v1.6.0 && docker tag warrior/kube-controller-manager-amd64:v1.6.0 gcr.io/google_containers/kube-controller-manager-amd64:v1.6.0 $ docker pull warrior/kube-proxy-amd64:v1.6.0 && docker tag warrior/kube-proxy-amd64:v1.6.0 gcr.io/google_containers/kube-proxy-amd64:v1.6.0 $ docker pull gysan/dnsmasq-metrics-amd64:1.0 && docker tag gysan/dnsmasq-metrics-amd64:1.0 gcr.io/google_containers/dnsmasq-metrics-amd64:1.0 $ docker pull zhaoqing/k8s-dns-kube-dns-amd64:1.14.4 && docker tag zhaoqing/k8s-dns-kube-dns-amd64:1.14.4 gcr.io/google_containers/k8s-dns-kube-dns-amd64:1.14.4 $ docker pull zhaoqing/k8s-dns-dnsmasq-nanny-amd64:1.14.4 && docker tag zhaoqing/k8s-dns-dnsmasq-nanny-amd64:1.14.4 gcr.io/google_containers/k8s-dns-dnsmasq-nanny-amd64:1.14.4 $ docker pull zhaoqing/k8s-dns-sidecar-amd64:1.14.4 && docker tag zhaoqing/k8s-dns-sidecar-amd64:1.14.4 gcr.io/google_containers/k8s-dns-sidecar-amd64:1.14.4 $ docker pull awa305/kube-discovery-amd64:1.0 && docker tag awa305/kube-discovery-amd64:1.0 gcr.io/google_containers/kube-discovery-amd64:1.0 $ docker pull gysan/exechealthz-amd64:1.2 && docker tag gysan/exechealthz-amd64:1.2 gcr.io/google_containers/exechealthz-amd64:1.2

3. 安装master
   

   1 2	$ kubeadm init --kubernetes-version=v1.9.4 --pod-network-cidr=10.244.0.0/16 #提示 kubeadm join --token ed33ee.b7c7c5303fac4385 192.168.11.1:6443 代表master安装完成

注意：
1.9版本因为提升性能，默认需要关闭swap分区
执行：swapoff -a

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#复制配置文件，供kubectl使用
$ mkdir -p $HOME/.kube
$ sudo cp -i /etc/kubernetes/admin.conf $HOME/.kube/config
$ sudo chown $(id -u):$(id -g) $HOME/.kube/config

4. 使master节点成为node
   

   1	$ kubectl taint nodes --all node-role.kubernetes.io/master-

5. 安装CNI插件
   

   1	$ kubectl apply -f https://git.io/weave-kube-1.6

6. 验证集群安装完成
   

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   $ kubectl get node NAME STATUS AGE VERSION kub-master Ready 1h v1.7.5 $ kubectl get pod --all-namespaces NAMESPACE NAME READY STATUS RESTARTS AGE kube-system etcd-kub-master 1/1 Running 1 1h kube-system kube-apiserver-kub-master 1/1 Running 1 1h kube-system kube-controller-manager-kub-master 1/1 Running 1 1h kube-system kube-dns-2838158301-vlhf5 3/3 Running 0 51m kube-system kube-proxy-0d3t6 1/1 Running 0 1h kube-system kube-scheduler-kub-master 1/1 Running 1 1h kube-system weave-net-ptv9f 2/2 Running 0 1h