Centos7.3之K8S安装初体验

容器是发展趋势，所以是时候从虚拟机中脱离出来，投入到容器化的怀抱中了。

曾经试过安装k8s，都没有成功，各种乱七八糟的报错，于是一拖再拖，这次总算发现一个可以快速部署的工具，终于安装成功了。

这个k8s快速部署工具就是kubekit

github地址是

https://github.com/Orientsoft/kubekit

直接按照以上这个地址的步骤部署也可以。

接下来我说一下具体的部署说明：

大体步骤是在关闭防火墙的Centos7.3上，下载解压kubekit安装包以及package压缩包，将package移入kubekit解压出来的文件夹中，同时对package中的sh文件添加可执行权限。进入kubekit文件夹，执行./kubekit init 服务器ip地址。正常情况下，安装成功的话会提示9000端口已监听。这个就是k8s的web界面。

系统环境：

Centos7.3

kubekit下载地址

https://kubekit.orientsoft.cn/kubekit-linux64-0.3.tar.gz

package下载地址

https://kubekit.orientsoft.cn/package-1.7.2.tar.gz

直接贴出我的命令执行历史，可以参考一下。加粗部分要额外注意

[root@bogon ~]# ls
anaconda-ks.cfg  kubekit-linux64-0.3.tar.gz  package-1.7..tar.gz
[root@bogon ~]# tar -xf kubekit-linux64-0.3.tar.gz
[root@bogon ~]# ls
anaconda-ks.cfg  kubekit-linux64-0.3.tar.gz  kubekit-release  package-1.7..tar.gz
[root@bogon ~]# mv kubekit-release kubekit
[root@bogon ~]# tar -xf package-1.7..tar.gz
[root@bogon ~]# ls
anaconda-ks.cfg  kubekit  kubekit-linux64-0.3.tar.gz  package  package-1.7..tar.gz
[root@bogon ~]# mv package kubekit
[root@bogon ~]# cd kubekit
[root@bogon kubekit]# ls
assets  kubekit  LICENSE  package  README.md  server.sh  templates
[root@bogon kubekit]# cd package/
[root@bogon package]# ls
docker.sh  images  master.sh  network  node.sh  rpms
[root@bogon package]# chmod +x *.sh
[root@bogon package]# ls
docker.sh  images  master.sh  network  node.sh  rpms
[root@bogon package]# cd ..
[root@bogon kubekit]# ls
assets  kubekit  LICENSE  package  README.md  server.sh  templates
[root@bogon kubekit]# cat /etc/redhat-release
CentOS Linux release 7.3. (Core)
[root@bogon kubekit]# systemctl status firewalld
● firewalld.service - firewalld - dynamic firewall daemon
   Loaded: loaded (/usr/lib/systemd/system/firewalld.service; disabled; vendor preset: enabled)
   Active: inactive (dead)
     Docs: man:firewalld()

Dec  :: localhost.localdomain systemd[]: Starting firewalld - dynamic firewall daemon...
Dec  :: localhost.localdomain systemd[]: Started firewalld - dynamic firewall daemon.
Dec  :: bogon systemd[]: Stopping firewalld - dynamic firewall daemon...
Dec  :: bogon systemd[]: Stopped firewalld - dynamic firewall daemon.
[root@bogon kubekit]# getenforce
Enforcing
[root@bogon kubekit]# ip addre|grep inet
    inet 127.0.0.1/ scope host lo
    inet6 ::/ scope host
    inet 192.168.2.133/ brd 192.168.2.255 scope global ens33
    inet6 fe80::a59c::e68e:ae/ scope link
[root@bogon kubekit]# ./kubekit init 192.168.2.133

 ___  __        ___  ___      ________      _______       ___  __        ___      _________
|\  \|\  \     |\  \|\  \    |\   __  \    |\  ___ \     |\  \|\  \     |\  \    |\___   ___\
\ \  \/  /|_   \ \  \\\  \   \ \  \|\ /_   \ \   __/|    \ \  \/  /|_   \ \  \   \|___ \  \_|
 \ \   ___  \   \ \  \\\  \   \ \   __  \   \ \  \_|/__   \ \   ___  \   \ \  \       \ \  \
  \ \  \\ \  \   \ \  \\\  \   \ \  \|\  \   \ \  \_|\ \   \ \  \\ \  \   \ \  \       \ \  \
   \ \__\\ \__\   \ \_______\   \ \_______\   \ \_______\   \ \__\\ \__\   \ \__\       \ \__\
    \|__| \|__|    \|_______|    \|_______|    \|_______|    \|__| \|__|    \|__|        \|__|

KubeKit V0. ⓒ  OrientSoft 

Initialization process started, with kubernetes master IP: 192.168.2.133

✔ HTTP file server listening at: 0.0.0.0:

Start to install docker engine...
(/) Start to install docker...
(/) Start to config docker...

✔ Docker engine installed...

Start to initialize Kubernetes master node...

(/) Start to load images for Kubernetes master...
(/) Start to install components for Kubernetes master...
(/) Start to configure firewall...
(/) Start to initialize Kubernetes master...
✔ Master token .b275f2c2c6bb5e78 saved into .k8s.token file.
(/) Start to config Kubernetes network...
(/) Start to install Kubernetes dashboard...

✔ Kubernetes master node initialized...

Remember to reload shell with: source ~/.bashrc before using kubectl!
[GIN-debug] [WARNING] Creating an Engine instance with the Logger and Recovery middleware already attached.

[GIN-debug] [WARNING] Running in "debug" mode. Switch to "release" mode in production.
 - using env:    export GIN_MODE=release
 - using code:    gin.SetMode(gin.ReleaseMode)

[GIN-debug] GET    /assets/*filepath         --> github.com/gin-gonic/gin.(*RouterGroup).createStaticHandler.func1 (4 handlers)
[GIN-debug] HEAD   /assets/*filepath         --> github.com/gin-gonic/gin.(*RouterGroup).createStaticHandler.func1 (4 handlers)
[GIN-debug] Loaded HTML Templates (3):
    -
    - index.html
    - locale.html

open ./.nodes: no such file or directory
[GIN-debug] GET    /                         --> github.com/Orientsoft/kubekit/controllers.(*MainRouter).IndexHandler-fm (4 handlers)
[GIN-debug] GET    /ws                       --> github.com/Orientsoft/kubekit/controllers.(*MainRouter).Initialize.func1 (4 handlers)
[GIN-debug] GET    /node/list                --> github.com/Orientsoft/kubekit/controllers.(*MainRouter).ListNodesHandler-fm (4 handlers)
[GIN-debug] POST   /node                     --> github.com/Orientsoft/kubekit/controllers.(*MainRouter).CreateNodeHandler-fm (4 handlers)
[GIN-debug] PUT    /node/remove/:id          --> github.com/Orientsoft/kubekit/controllers.(*MainRouter).RemoveNodeHandler-fm (4 handlers)
[GIN-debug] GET    /node/refresh/:id         --> github.com/Orientsoft/kubekit/controllers.(*MainRouter).RefreshNodeHandler-fm (4 handlers)
[GIN-debug] GET    /node/log/:id             --> github.com/Orientsoft/kubekit/controllers.(*MainRouter).GetInstallLog-fm (4 handlers)
[GIN-debug] POST   /install                  --> github.com/Orientsoft/kubekit/controllers.(*MainRouter).InstallNodeHandler-fm (4 handlers)
[GIN-debug] GET    /install/progress/:id/:step --> github.com/Orientsoft/kubekit/controllers.(*MainRouter).NodeProgressHandler-fm (4 handlers)

✔ Toolkit server is listening at: 0.0.0.0:9000
[GIN-debug] Listening and serving HTTP on :9000

在浏览器中访问。可以看到k8s的界面了

以上是在我自己的电脑上测试的，但是换一台电脑好像不行，现在还在找原因，如果找到了，我再补充进来
12月10日补充：

关闭防火墙并且不修改默认的selinux，同时只在一个命令窗口执行？反正没报错