k8s簡單使用

版本

注意k8s與docker的版本适配。（2018-11-15的最新版：k8s=v1.12.2不支援docker=18.09.1）

docker

https://docs.docker-cn.com/engine/installation/linux/docker-ce/ubuntu/

curl -fs https://raw.githubusercontent.com/archongum/kubernetes-files/master/gpg | sudo apt-key add -

echo "deb [arch=amd64] https://mirrors.tuna.tsinghua.edu.cn/docker-ce/linux/ubuntu \
$(lsb_release -cs) \
stable" >> /etc/apt/sources.list

# 檢視版本
# apt-cache madison docker-ce
apt update
apt install docker-ce=18.06.1~ce~3-0~ubuntu
           

kubernetes

kubeadm kubectl kubelet

CentOS

https://www.kubernetes.org.cn/4619.html

ubuntu

https://linuxconfig.org/how-to-install-kubernetes-on-ubuntu-18-04-bionic-beaver-linux

https://www.coder4.com/archives/6107

curl -fs https://raw.githubusercontent.com/archongum/kubernetes-files/master/apt-key.gpg | apt-key add -

# 目前隻有xenial（2018-11-15）
echo "deb http://mirrors.ustc.edu.cn/kubernetes/apt kubernetes-xenial main" > /etc/apt/sources.list.d/kubernetes.list

apt update

apt install kubelet kubeadm kubectl
           

其他系統操作

關swap（選）

1. swapoff -a

2. vim /etc/fstab

   注釋swap加載

初始化k8s

# 
# --ignore-preflight-errors=Swap
kubeadm init \
   --kubernetes-version=v1.12.2 \
   --pod-network-cidr=10.244.0.0/16 \
   --apiserver-advertise-address=192.168.4.41
           

需要科學上網下載下傳docker鏡像，根據鏡像的版本去dockerhub找其他人的鏡像，然後tag

https://hub.docker.com/u/mirrorgooglecontainers/

整理的k8s=v1.12.2的替代docker

# 版本資訊
K8S_VERSION=v1.12.2
ETCD_VERSION=3.2.24
DNS_VERSION=1.2.2
PAUSE_VERSION=3.1
FLANNEL_VERSION=v0.10.0-amd64
DASHBOARD_VERSION=v1.10.0

# 基本元件
docker pull mirrorgooglecontainers/kube-apiserver:$K8S_VERSION
docker pull mirrorgooglecontainers/kube-controller-manager:$K8S_VERSION
docker pull mirrorgooglecontainers/kube-scheduler:$K8S_VERSION
docker pull mirrorgooglecontainers/kube-proxy:$K8S_VERSION

docker pull mirrorgooglecontainers/etcd:$ETCD_VERSION
docker pull mirrorgooglecontainers/pause:$PAUSE_VERSION

## 網絡
docker pull coredns/coredns:$DNS_VERSION
docker pull quay.io/coreos/flannel:$FLANNEL_VERSION

## 前端
docker pull mirrorgooglecontainers/kubernetes-dashboard-amd64:$DASHBOARD_VERSION

# 修改tag
docker tag mirrorgooglecontainers/kube-apiserver:$K8S_VERSION k8s.gcr.io/kube-apiserver:$K8S_VERSION
docker tag mirrorgooglecontainers/kube-controller-manager:$K8S_VERSION k8s.gcr.io/kube-controller-manager:$K8S_VERSION
docker tag mirrorgooglecontainers/kube-scheduler:$K8S_VERSION k8s.gcr.io/kube-scheduler:$K8S_VERSION
docker tag mirrorgooglecontainers/kube-proxy:$K8S_VERSION k8s.gcr.io/kube-proxy:$K8S_VERSION

docker tag mirrorgooglecontainers/etcd:$ETCD_VERSION k8s.gcr.io/etcd:$ETCD_VERSION
docker tag mirrorgooglecontainers/pause:$PAUSE_VERSION k8s.gcr.io/pause:$PAUSE_VERSION

## 網絡
docker tag coredns/coredns:$DNS_VERSION k8s.gcr.io/coredns:$DNS_VERSION

## 前端
docker tag mirrorgooglecontainers/kubernetes-dashboard-amd64:$DASHBOARD_VERSION k8s.gcr.io/kubernetes-dashboard:$DASHBOARD_VERSION


# 删除images
docker rmi mirrorgooglecontainers/kube-apiserver:$K8S_VERSION
docker rmi mirrorgooglecontainers/kube-controller-manager:$K8S_VERSION
docker rmi mirrorgooglecontainers/kube-scheduler:$K8S_VERSION
docker rmi mirrorgooglecontainers/kube-proxy:$K8S_VERSION

docker rmi mirrorgooglecontainers/etcd:$ETCD_VERSION
docker rmi mirrorgooglecontainers/pause:$PAUSE_VERSION

## 網絡
docker rmi coredns/coredns:$DNS_VERSION

## 前端
docker rmi mirrorgooglecontainers/kubernetes-dashboard-amd64:$DASHBOARD_VERSION
           

初始化設定

mkdir -p $HOME/.kube
sudo cp -i /etc/kubernetes/admin.conf $HOME/.kube/config
sudo chown $(id -u):$(id -g) $HOME/.kube/config
           

網卡flannel

kubectl apply -f https://raw.githubusercontent.com/coreos/flannel/master/Documentation/kube-flannel.yml
           

Maven docker plugin

https://my.oschina.net/u/3971841/blog/2056302

plugin

PS: 可以改images的名字

<plugin>
	<groupId>com.spotify</groupId>
	<artifactId>docker-maven-plugin</artifactId>
	<version>${docker.plugin.version}</version>
	<configuration>
		<dockerHost>http://192.168.4.41:2375</dockerHost>
		<imageName>${docker.repository.prefix}/${project.artifactId}</imageName>
		<imageTags>
			<imageTag>${version}</imageTag>
		</imageTags>
		<baseImage>openjdk:8-jre-alpine</baseImage>
		<entryPoint>["java", "-Djava.security.egd=file:/dev/./urandom", "-jar", "/${project.build.finalName}.jar"]</entryPoint>
		<resources>
			<resource>
				<directory>${project.build.directory}</directory>
				<targetPath>/</targetPath>
				<includes>
					<include>${project.build.finalName}.jar</include>
				</includes>
			</resource>
		</resources>
	</configuration>
</plugin>
           

build

mvn clean package -Dmaven.test.skip=true
mvn docker:build
           

docker run（非k8s步驟）

docker run \
-it \
-e "SPRING_PROFILES_ACTIVE=dev" \
model-dealer:latest \
sh
           

k8s使用本地image部署

本地docker register

https://blog.csdn.net/wzp1986/article/details/55829974

docker run \
-d \
-p 5000:5000 \
--restart=always \
--name="localdocker" \
-v /data/localdocker:/registry \
-e REGISTRY_STORAGE_FILESYSTEM_ROOTDIRECTORY=/registry \
registry