ubuntu 18.04 安装k8s集群-本地镜像仓库配置及安装k8s(三)

1.本地镜像仓库配置

1.docker pull registry

2. mkdir -p /data/docker/registrydata

3.docker tag registry:latest 10.68.100.150:5000/registry:latest

4.docker push 10.68.100.150:5000/registry:latest

5.docker run -di --name=registry -p 5000:5000 -v /data/docker/registrydata:/var/lib/registry 10.68.100.150:5000/registry:latest

6.配置docker 镜像 地址

vim /etc/docker/daemon.json

{

"insecure-registries": ["10.68.100.150:5000"]

}

2.安装K8s相关软件

1.创建kubernetes的repo

apt-get update && apt-get install -y apt-transport-https curl

2.添加密钥

curl -s https://mirrors.aliyun.com/kubernetes/apt/doc/apt-key.gpg | apt-key add -

3.添加国内下载源，注意受限于版本限制，这里的xenial莫要去更改它！！

tee /etc/apt/sources.list.d/kubernetes.list <<-'EOF'

deb https://mirrors.aliyun.com/kubernetes/apt kubernetes-xenial main

EOF

4.更新安装包信息

apt-get update

5.查看当前环境下合适的安装版本

apt-cache madison kubelet

6.安装指定版本的K8S

apt-get install -y kubelet=1.18.20-00 kubeadm=1.18.20-00 kubectl=1.18.20-00

7.为保证项目中其他模块不受影响，此处对K8s版本进行锁定，以避免误操作使其版本发生变化

apt-mark hold kubelet=1.18.20-00 kubeadm=1.18.20-00 kubectl=1.18.20-00

8.查询当前环境需要的镜像

kubeadm config images list --kubernetes-version=v1.18.20

9.由于k8s.gcr.io、quay.io等被墙，相关镜像先在其他仓库下载，然后再重打标签进行使用,（设置本地镜像仓库后master 节点操作，否则slave都要操作）

镜像下载方法：

docker pull registry.aliyuncs.com/google_containers/kube-apiserver:v1.18.20

docker pull registry.aliyuncs.com/google_containers/kube-controller-manager:v1.18.20

docker pull registry.aliyuncs.com/google_containers/kube-scheduler:v1.18.20

docker pull registry.aliyuncs.com/google_containers/kube-proxy:v1.18.20

docker pull registry.aliyuncs.com/google_containers/pause:3.2

docker pull registry.aliyuncs.com/google_containers/etcd:3.4.3-0

docker pull registry.aliyuncs.com/google_containers/coredns:1.6.7

镜像重新打标签

docker tag registry.aliyuncs.com/google_containers/kube-apiserver:v1.18.20 10.68.100.150:5000/registry/kube-apiserver:v1.18.20

docker tag registry.aliyuncs.com/google_containers/kube-controller-manager:v1.18.20 10.68.100.150:5000/registry/kube-controller-manager:v1.18.20

docker tag registry.aliyuncs.com/google_containers/kube-scheduler:v1.18.20 10.68.100.150:5000/registry/kube-scheduler:v1.18.20

docker tag registry.aliyuncs.com/google_containers/kube-proxy:v1.18.20 10.68.100.150:5000/registry/kube-proxy:v1.18.20

docker tag registry.aliyuncs.com/google_containers/pause:3.2 10.68.100.150:5000/registry/pause:3.2

docker tag registry.aliyuncs.com/google_containers/etcd:3.4.3-0 10.68.100.150:5000/registry/etcd:3.4.3-0

docker tag registry.aliyuncs.com/google_containers/coredns:1.6.7 10.68.100.150:5000/registry/coredns:1.6.7

镜像推送到本地仓库

docker push 10.68.100.150:5000/registry/kube-apiserver:v1.18.20

docker push 10.68.100.150:5000/registry/kube-controller-manager:v1.18.20

docker push 10.68.100.150:5000/registry/kube-scheduler:v1.18.20

docker push 10.68.100.150:5000/registry/kube-proxy:v1.18.20

docker push 10.68.100.150:5000/registry/pause:3.2

docker push 10.68.100.150:5000/registry/etcd:3.4.3-0

docker push 10.68.100.150:5000/registry/coredns:1.6.7

10.开启路由功能

sysctl -w net.ipv4.ip_forward=1

11.k8s初始化，master节点操作

kubeadm init \

--kubernetes-version=v1.18.20 \

--image-repository 10.68.100.150:5000/registry --v=5 \

--control-plane-endpoint "10.68.100.150:6443" \

--upload-certs \

--service-cidr=10.96.0.0/12 \

--pod-network-cidr=10.244.0.0/16

初始化成功后，按照文中提示，首先执行以下语句：

mkdir -p $HOME/.kube

cp -i /etc/kubernetes/admin.conf $HOME/.kube/config

chown $(id -u):$(id -g) $HOME/.kube/config //若当前用户不是root用户需要执行

上面语句执行完后，现在执行kubectl get nodes，会发现master节点并不是ready状态，原因是还没初始化节点网络，