正文
ubuntu16.04 docker kubernetes(k8s) istio 安装
小程序：扫一扫查出行【扫一扫了解最新限行尾号】
复制小程序
版本：
docker: 19.03.5
kubernetes: 1.17.0
istio: 1.4.3
步骤一：给ubuntu换源
https://www.cnblogs.com/lfri/p/10612037.html
步骤二：装docker
sudo apt-get install -y apt-transport-https ca-certificates curl software-properties-common
curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo apt-key add -
sudo add-apt-repository "deb [arch=amd64] https://download.docker.com/linux/ubuntu $(lsb_release -cs) stable"
sudo apt-get update
sudo apt-get install docker-ce=5:19.03.5~3-0~ubuntu-xenial
sudo docker --version
https://www.cnblogs.com/jiyang2008/p/9014960.html
步骤三：装kubernetes(k8s)
sudo apt-key adv --keyserver hkp://keyserver.ubuntu.com:80 --recv-keys 6A030B21BA07F4FB
sudo apt-add-repository "deb https://mirrors.aliyun.com/kubernetes/apt kubernetes-xenial main"
sudo apt update
sudo apt install -y kubelet kubeadm kubectl
kubeadm config images list
显示需要拉取的Images，如果提示权限，前面加sudo
docker pull registry.cn-hangzhou.aliyuncs.com/google_containers/kube-apiserver:v1.17.0
docker pull registry.cn-hangzhou.aliyuncs.com/google_containers/kube-controller-manager:v1.17.0
docker pull registry.cn-hangzhou.aliyuncs.com/google_containers/kube-scheduler:v1.17.0
docker pull registry.cn-hangzhou.aliyuncs.com/google_containers/kube-proxy:v1.17.0
docker pull registry.cn-hangzhou.aliyuncs.com/google_containers/pause:3.1
docker pull registry.cn-hangzhou.aliyuncs.com/google_containers/etcd:3.4.3-0
docker pull registry.cn-hangzhou.aliyuncs.com/google_containers/coredns:1.6.5
docker tag registry.cn-hangzhou.aliyuncs.com/google_containers/pause:3.1 k8s.gcr.io/pause:3.1
docker tag registry.cn-hangzhou.aliyuncs.com/google_containers/kube-apiserver:v1.17.0 k8s.gcr.io/kube-apiserver:v1.17.0
docker tag registry.cn-hangzhou.aliyuncs.com/google_containers/kube-controller-manager:v1.17.0 k8s.gcr.io/kube-controller-manager:v1.17.0
docker tag registry.cn-hangzhou.aliyuncs.com/google_containers/kube-scheduler:v1.17.0 k8s.gcr.io/kube-scheduler:v1.17.0
docker tag registry.cn-hangzhou.aliyuncs.com/google_containers/kube-proxy:v1.17.0 k8s.gcr.io/kube-proxy:v1.17.0
docker tag registry.cn-hangzhou.aliyuncs.com/google_containers/etcd:3.4.- k8s.gcr.io/etcd:3.4.-
docker tag registry.cn-hangzhou.aliyuncs.com/google_containers/coredns:1.6. k8s.gcr.io/coredns:1.6.
执行Init
kubeadm init --kubernetes-version=v1.17.0 --pod-network-cidr 192.168.0.0/
出现cgroupd有关错误：
cd /etc/docker
sudo touch daemon.json
sudo vim daemon.json // 添加内容：
{
"exec-opts":["native.cgroupdriver=systemd"]
}
sudo service docker restart
sudo systemctl status docker
出现swap有关错误：
swapoff -a
再次执行init命令：
按照提示添加：
执行完继续执行：
kubectl apply -f https://raw.githubusercontent.com/coreos/flannel/master/Documentation/kube-flannel.yml
kubectl get pod -n kube-system // 查看状态
解决coredns的CrashLoopBackOff状态：
sudo vim /etc/resolv.conf
将nameserver的值改为8.8.8.8
systemctl daemon-reload
service docker restart
# 耐心等待几分钟
步骤四：安装istio
我是直接安装的最新版本
mkdir istio
cd istio
curl -L https://git.io/getLatestIstio | sh -
下载速度很慢，建议...
下载完后在istio目录下会有个istio-1.4.3文件夹
vim /etc/profile
添加上面提示的路径。
source /etc/profile
echo $PATH
istioctl verify-install
查看版本：
istioctl version --remote=false
将istio镜像部署到k8s：
在istio-1.4.3目录下输入：
kubectl apply install/kubernetes/istio-demo.yaml
k8s和istio安装成功！
深入学习：
https://preliminary.istio.io/zh/docs/examples/bookinfo/
问题：
1、重启后会遇到istioctl命令失效问题：
source /etc/profile 再来一遍就好了
2、coredns又变成CrashLoopBackOff状态
再次重新执行一遍上面的解决方案
暂时采取上述方案解决，永久解决的方案待续...（2020-1-13）
参考：
https://blog.csdn.net/weixin_42711936/article/details/96897915
https://blog.csdn.net/weixin_42711936/article/details/97041456
https://blog.csdn.net/weixin_42711936/article/details/99311796
https://blog.csdn.net/weixin_34378767/article/details/92211061
https://www.cnblogs.com/liuluopeng/p/12098071.html
表示万分感谢！
