安装k8s 1.12.1
参考
http://www.cnblogs.com/benjamin77/p/9783797.html
https://www.cnblogs.com/myzony/p/9298783.html
https://www.cnblogs.com/cocowool/p/kubeadm_install_kubernetes.html
https://juejin.im/post/5b460f506fb9a04fcf59bf73
一、操作系统环境设置
=====在192.168.56.60和192.168.56.61机器上执行
1.、关掉 selinux
$ setenforce 0
$ sed -i "s/^SELINUX=enforcing/SELINUX=disabled/g" /etc/sysconfig/selinux
2、关掉防火墙
$ systemctl stop firewalld
$ systemctl disable firewalld
3、关闭 swap
$ swapoff -a
$ sed -i 's/.*swap.*/#&/' /etc/fstab
4、配置转发参数
$ vi /etc/sysctl.d/k8s.conf
net.bridge.bridge-nf-call-ip6tables = 1
net.bridge.bridge-nf-call-iptables = 1
$ sysctl --system
5、安装一些必备的工具
$ yum install -y epel-release
$ yum install -y net-tools wget vim ntpdate
6、设置国内 yum 源
$ vi /etc/yum.repos.d/kubernetes.repo
[kubernetes]
name=Kubernetes
baseurl=https://mirrors.aliyun.com/kubernetes/yum/repos/kubernetes-el7-x86_64/
gpgcheck=0
gpgkey=https://mirrors.aliyun.com/kubernetes/yum/doc/rpm-package-key.gpg
enabled=1
7、yum makecache fast
8、修改主机名称和hosts
(1)、 修改192.168.56.60 机器:hostnamectl set-hostname tadm-60
(2)、修改192.168.56.61 机器: hostnamectl set-hostname tadm-61
(3)、修改192.168.56.60和192.168.56.61 vi /etc/hosts
192.168.56.60 tadm-60
192.168.56.61 tadm-61
二、安装命令组件k8s
1、查看可安装的版本
yum list kubelet --showduplicates | sort -r
2、安装kubeadm、kubectl、kubelet
$ yum install -y kubelet-1.12.1 kubeadm-1.12.1 kubectl-1.12.1 kubernetes-cni-0.6.0
$ systemctl enable kubelet && systemctl start kubelet
3、拉取k8s需要的镜像
docker pull mirrorgooglecontainers/kube-apiserver:v1.12.1
docker pull mirrorgooglecontainers/kube-controller-manager:v1.12.1
docker pull mirrorgooglecontainers/kube-scheduler:v1.12.1
docker pull mirrorgooglecontainers/kube-proxy:v1.12.1
docker pull mirrorgooglecontainers/etcd-amd64:3.2.24
docker pull mirrorgooglecontainers/pause-amd64:3.1
docker pull mirrorgooglecontainers/etcd:3.2.24
docker pull mirrorgooglecontainers/pause:3.1
docker pull coredns/coredns:1.2.2
docker pull registry.cn-shanghai.aliyuncs.com/gcr-k8s/flannel:v0.10.0-amd64
4、修改k8s需要的镜像名称
docker tag mirrorgooglecontainers/kube-apiserver:v1.12.1 k8s.gcr.io/kube-apiserver:v1.12.1
docker tag mirrorgooglecontainers/kube-controller-manager:v1.12.1 k8s.gcr.io/kube-controller-manager:v1.12.1
docker tag mirrorgooglecontainers/kube-scheduler:v1.12.1 k8s.gcr.io/kube-scheduler:v1.12.1
docker tag mirrorgooglecontainers/kube-proxy:v1.12.1 k8s.gcr.io/kube-proxy:v1.12.1
docker tag mirrorgooglecontainers/etcd-amd64:3.2.24 k8s.gcr.io/etcd-amd64:3.2.24
docker tag mirrorgooglecontainers/pause-amd64:3.1 k8s.gcr.io/pause-amd64:3.1
docker tag mirrorgooglecontainers/etcd:3.2.24 k8s.gcr.io/etcd:3.2.24
docker tag mirrorgooglecontainers/pause:3.1 k8s.gcr.io/pause:3.1
docker tag coredns/coredns:1.2.2 k8s.gcr.io/coredns:1.2.2
docker tag registry.cn-shanghai.aliyuncs.com/gcr-k8s/flannel:v0.10.0-amd64 quay.io/coreos/flannel:v0.10.0-amd64
5、删除镜像
docker rmi mirrorgooglecontainers/kube-apiserver:v1.12.1
docker rmi mirrorgooglecontainers/kube-controller-manager:v1.12.1
docker rmi mirrorgooglecontainers/kube-scheduler:v1.12.1
docker rmi mirrorgooglecontainers/kube-proxy:v1.12.1
docker rmi mirrorgooglecontainers/etcd-amd64:3.2.24
docker rmi mirrorgooglecontainers/pause-amd64:3.1
docker rmi mirrorgooglecontainers/etcd:3.2.24
docker rmi mirrorgooglecontainers/pause:3.1
docker rmi coredns/coredns:1.2.2
docker rmi registry.cn-shanghai.aliyuncs.com/gcr-k8s/flannel:v0.10.0-amd64
6、查看镜像结果
docker images | grep k8s
======在192.168.56.60机器上执行
7、开始安装k8s
kubeadm init --kubernetes-version=v1.12.1 --pod-network-cidr=10.244.0.0/16 --apiserver-advertise-address=192.168.56.60
执行屏幕打印出的命令
mkdir -p $HOME/.kube
sudo cp -i /etc/kubernetes/admin.conf $HOME/.kube/config
sudo chown $(id -u):$(id -g) $HOME/.kube/config
8、创建 flannel 网络
(1) sysctl net.bridge.bridge-nf-call-iptables=1
(2) wget wget https://raw.githubusercontent.com/coreos/flannel/master/Documentation/kube-flannel.yml
(3) flannel 默认会使用主机的第一张网卡，如果你有多张网卡，需要通过配置单独指定。修改 kube-flannel.yml 中的以下部分
(4) 安装网络
** 手工先下载
docker pull quay.io/coreos/flannel:v0.10.0-amd64
如果很慢可以下载
docker pull registry.cn-shenzhen.aliyuncs.com/cp_m/flannel:v0.10.0-amd64
docker tag registry.cn-shenzhen.aliyuncs.com/cp_m/flannel:v0.10.0-amd64 quay.io/coreos/flannel:v0.10.0-amd64
** 创建网络 kubectl apply -f kube-flannel.yml
======在192.168.56.61机器上执行
9、192.168.56.61加入集群
(1)、同样的类似192.168.56.60下载镜像
3、拉取k8s需要的镜像
4、修改k8s需要的镜像名称
5、删除镜像
(2)、使用刚才在192.168.56.60创建master控制台提示加入集群命令
kubeadm join 192.168.56.60:6443 --token cgggwd.q5w883rkzbp44v6w --discovery-token-ca-cert-hash sha256:cae67bec80da916c8e140f4e66f2ce3aff2f8be3a8580f757cdfdfd1651337ba
(3)、在192.168.56.60上验证
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