小白学k8s(6)使用kubespray部署k8s

• kubespray部署k8s
  • 准备
    • 需要关闭防火墙
    • 配置hosts
    • 处理镜像
    • 配置文件
  • 运行
    • 通过对应的镜像
    • 运行代码
  • 查看结果
  • 出现的问题
    • 墙
    • 错误的配置

kubespray部署k8s

准备

kubespray项目地址

releases版本：v2.15.1

需要关闭防火墙

具体命令，自行google

配置hosts

cat >>/etc/hosts<<EOF
10.10.110.xxx k8s-master
10.10.110.xxx k8s-node1
10.10.110.xxx k8s-node2
EOF

处理镜像

k8s.gcr.io/kube-proxy:v1.19.9
k8s.gcr.io/kube-controller-manager:v1.19.9
k8s.gcr.io/kube-scheduler:v1.19.9
k8s.gcr.io/kube-apiserver:v1.19.9
k8s.gcr.io/coredns:1.7.0
k8s.gcr.io/pause:3.3
k8s.gcr.io/dns/k8s-dns-node-cache:1.17.1
k8s.gcr.io/cpa/cluster-proportional-autoscaler-amd64:1.8.3
k8s.gcr.io/kube-scheduler:v1.19.9

下载，打tag

docker pull liz2019/kube-proxy:v1.19.9
docker pull liz2019/kube-controller-manager:v1.19.9
docker pull liz2019/kube-scheduler:v1.19.9
docker pull liz2019/kube-apiserver:v1.19.9
docker pull liz2019/coredns:1.7.0
docker pull liz2019/pause:3.3
docker pull liz2019/k8s-dns-node-cache:1.17.1
docker pull liz2019/cluster-proportional-autoscaler-amd64:1.8.3
docker pull liz2019/kube-scheduler:v1.19.9


docker tag liz2019/kube-proxy:v1.19.9 k8s.gcr.io/kube-proxy:v1.19.9
docker tag liz2019/kube-controller-manager:v1.19.9 k8s.gcr.io/kube-controller-manager:v1.19.9
docker tag liz2019/kube-scheduler:v1.19.9 k8s.gcr.io/kube-scheduler:v1.19.9
docker tag liz2019/kube-apiserver:v1.19.9 k8s.gcr.io/kube-apiserver:v1.19.9
docker tag liz2019/coredns:1.7.0 k8s.gcr.io/coredns:1.7.0
docker tag liz2019/pause:3.3 k8s.gcr.io/pause:3.3
docker tag liz2019/k8s-dns-node-cache:1.17.1 k8s.gcr.io/dns/k8s-dns-node-cache:1.17.1
docker tag liz2019/cluster-proportional-autoscaler-amd64:1.8.3 k8s.gcr.io/cpa/cluster-proportional-autoscaler-amd64:1.8.3
docker tag liz2019/kube-scheduler:v1.19.9 k8s.gcr.io/kube-scheduler:v1.19.9

镜像打包

打包导入到tar包中

$ docker save -o ./images.tar webapp:1.0 nginx:1.12 mysql:5.7

导出镜像

$ docker load -i ./images.tar

配置文件

配置文件

[all]
k8s-master ansible_host=10.10.110.xxx ip=10.10.110.xxx ansible_ssh_port=666
k8s-node1 ansible_host=10.10.110.xxx ip=10.10.110.xxx ansible_ssh_port=666
k8s-node2 ansible_host=10.10.11o.xxx ip=10.10.110.xxx ansible_ssh_port=666

[kube-master]
k8s-master

[etcd]
k8s-master
k8s-node1
k8s-node2

[kube-node]
k8s-node1
k8s-node2

[calico-rr]

[k8s-cluster:children]
kube-master
kube-node
calico-rr

运行

通过对应的镜像

$ docker pull quay.io/kubespray/kubespray:v2.15.1
$ docker run --rm -it --mount type=bind,source="$(pwd)"/inventory/sample,dst=/inventory 
  --mount type=bind,source="${HOME}"/.ssh/id_rsa,dst=/root/.ssh/id_rsa 
  quay.io/kubespray/kubespray:v2.15.1 bash
$ ansible-playbook -i /inventory/inventory.ini --private-key /root/.ssh/id_rsa cluster.yml

运行代码

$ ansible-playbook -i /inventory/inventory.ini --private-key /root/.ssh/id_rsa cluster.yml

运行出错，删除

$ ansible-playbook -i /inventory/inventory.ini --private-key /root/.ssh/id_rsa reset.yml

查看结果

运行的结果

PLAY RECAP *************************************************************************************************************************************************************************************************
xxxxxxxxxxxx.zs            : ok=391  changed=49   unreachable=0    failed=0    skipped=639  rescued=0    ignored=1   
xxxxxxxxxxxx.zs            : ok=391  changed=49   unreachable=0    failed=0    skipped=638  rescued=0    ignored=1   
xxxxxxxxxxxx.zs            : ok=525  changed=75   unreachable=0    failed=0    skipped=1079 rescued=0    ignored=2   
localhost                  : ok=1    changed=0    unreachable=0    failed=0    skipped=0    rescued=0    ignored=0   

查看

➜  ~ kubectl get nodes
NAME              STATUS   ROLES    AGE     VERSION
xxxxxxxxxxxx.zs   Ready    <none>   6m24s   v1.19.9
xxxxxxxxxxxx.zs   Ready    <none>   6m25s   v1.19.9
xxxxxxxxxxxx.zs   Ready    master   8m10s   v1.19.9

出现的问题

墙

一些镜像在跑的时候国内的网络拉不上来，需要手动处理，可参考上面的处理办法，对于一些版本的镜像，在docker-hub中搜索，就能解决。

错误的配置

inventory.ini文件没有配置hostname就开始搞了，结果kubeadmin init报错

ReadString: expects " or n, but found 1, error found in #10 byte of ...|s.local",10,"base-se|..., bigger context