Kuboard

制作标准机镜像

通过使用标准机镜像，可以

  • 避免重复执行对测试机安装必要软件的过程
  • 以一种相对标准化的过程管理测试机的维护

标准机镜像中预装了如下内容：

  • docker
  • gitlab-runner
  • kubernetes images

本文档描述的安装过程已基于 centos 7.6 验证

标准机镜像的制作过程描述如下：

安装docker

卸载旧版本

sudo yum remove docker \
	docker-client \
	docker-client-latest \
	docker-common \
	docker-latest \
	docker-latest-logrotate \
	docker-logrotate \
	docker-selinux \
	docker-engine-selinux \
	docker-engine

下载依赖包及安装包

wget https://download.docker.com/linux/centos/7/x86_64/stable/Packages/containerd.io-1.2.6-3.3.el7.x86_64.rpm

wget https://download.docker.com/linux/centos/7/x86_64/stable/Packages/docker-ce-cli-18.09.7-3.el7.x86_64.rpm

wget https://download.docker.com/linux/centos/7/x86_64/stable/Packages/docker-ce-18.09.7-3.el7.x86_64.rpm

安装

sudo yum install -y containerd.io-1.2.6-3.3.el7.x86_64.rpm
sudo yum install -y docker-ce-cli-18.09.7-3.el7.x86_64.rpm
sudo yum install -y docker-ce-18.09.7-3.el7.x86_64.rpm
sudo systemctl enable docker

启动 docker 服务

sudo systemctl start docker

检查 docker 版本

docker version

参考文档

https://docs.docker.com/install/linux/docker-ce/centos/

https://docs.docker.com/install/linux/linux-postinstall/

安装 nfs-utils

执行安装命令

sudo yum install nfs-utils

必须先安装 nfs-utils 才能挂载 nfs 网络存储

K8S基本配置

配置K8S的yum源

cat <<EOF > /etc/yum.repos.d/kubernetes.repo
[kubernetes]
name=Kubernetes
baseurl=http://mirrors.aliyun.com/kubernetes/yum/repos/kubernetes-el7-x86_64
enabled=1
gpgcheck=0
repo_gpgcheck=0
gpgkey=http://mirrors.aliyun.com/kubernetes/yum/doc/yum-key.gpg
        http://mirrors.aliyun.com/kubernetes/yum/doc/rpm-package-key.gpg
EOF

关闭swap、防火墙

swapoff -a

关闭SeLinux

setenforce 0

修改 /etc/sysctl.conf

vim /etc/sysctl.conf

向其中添加

net.ipv4.ip_forward = 1
net.bridge.bridge-nf-call-ip6tables = 1
net.bridge.bridge-nf-call-iptables = 1

如下图所示

image-20190715085036593

安装kubelet、kubeadm、kubectl

yum install -y kubelet-1.15.0 kubeadm-1.15.0 kubectl-1.15.0

修改docker Cgroup Driver为systemd

vim /usr/lib/systemd/system/docker.service

向其中他添加

--exec-opt native.cgroupdriver=systemd

如下图所示

屏幕快照 2019-07-15 09.01.21

重启 docker

systemctl daemon-reload
systemctl restart docker

启动kubelet

systemctl enable kubelet && systemctl start kubelet

加载 kubernetes 镜像

由于k8s服务相关镜像在国外镜像源，国内无法访问

执行以下命令添加docker k8s国内镜像源

curl -sSL https://get.daocloud.io/daotools/set_mirror.sh | sh -s http://f1361db2.m.daocloud.io

systemctl restart docker

拉取k8s相关镜像

docker pull mirrorgooglecontainers/kube-apiserver:v1.15.0
docker pull mirrorgooglecontainers/kube-controller-manager:v1.15.0
docker pull mirrorgooglecontainers/kube-scheduler:v1.15.0
docker pull mirrorgooglecontainers/kube-proxy:v1.15.0
docker pull mirrorgooglecontainers/pause:3.1
docker pull mirrorgooglecontainers/etcd:3.3.10
docker pull coredns/coredns:1.3.1

更改镜像名为k8s官网镜像

docker tag d235b23c3570 k8s.gcr.io/kube-proxy:v1.15.0
docker tag 201c7a840312 k8s.gcr.io/kube-apiserver:v1.15.0
docker tag 2d3813851e87 k8s.gcr.io/kube-scheduler:v1.15.0
docker tag 8328bb49b652 k8s.gcr.io/kube-controller-manager:v1.15.0
docker tag da86e6ba6ca1 k8s.gcr.io/pause:3.1
docker tag eb516548c180 k8s.gcr.io/coredns:1.3.1
docker tag 2c4adeb21b4f k8s.gcr.io/etcd:3.3.10

制作镜像

请参考阿里云基于ECS 制作虚拟机镜像 的文档

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