Kubernetes学习笔记---安装

阳光穿透心脏的1/2处 2022-08-23 05:45 131阅读 0赞

Kubernetes安装环境

Centos7.1系统的机器3台

Master：192.168.0.120

Nodes：192.168.0.106, 192.168.0.107

=====

Master

=====

1 在Master上安装kubernetes etcd flannel

**yum install kubernetes etcd flannel -y**

2 修改配置文件/etc/kubernetes/controller-manager

\#指定key文件，key文件可以通过命令生成：openssl genrsa -out /etc/kubernetes/service.key 2048

KUBE\_CONTROLLER\_MANAGER\_ARGS=" **--service\_account\_private\_key\_file=/etc/kubernetes/service.key**"

3 修改配置文件/etc/kubernetes/apiserver

\# The address on the local server to listen to. 设为全部监听

KUBE\_API\_ADDRESS=" **--address=0.0.0.0**"

\# Comma separated list of nodes in the etcd cluster . 指定etcd节点的地址

KUBE\_ETCD\_SERVERS=" **--etcd-servers=http://192.168.0.120:2379**"

\# Address range to use for services. 这个是设置今后运行Service所在的ip网段

KUBE\_SERVICE\_ADDRESSES=" **--service-cluster-ip-range=192.168.1.0/24**"

\# Add your own! 指定key文件

KUBE\_API\_ARGS=" **--service\_account\_key\_file=/etc/kubernetes/service.key**"

4 修改配置文件/etc/kubernetes/config

\# How the controller-manager, scheduler, and proxy find the apiserver

KUBE\_MASTER=" **--master=http://192.168.0.120:8080**"

5 修改配置文件/etc/etcd/etcd.conf

ETCD\_LISTEN\_CLIENT\_URLS=" **http://0.0.0.0:2379**"

ETCD\_ADVERTISE\_CLIENT\_URLS=" **http://192.168.0.120:2379**"

6 启动etcd和kubernetes的服务

systemctl start **etcd kube-apiserver kube-controller-manager kube-scheduler**

systemctl enable etcd kube-apiserver kube-controller-manager kube-scheduler

7 修改配置文件/etc/sysconfig/flanneld

\# etcd url location.  Point this to the server where etcd runs

FLANNEL\_ETCD=" **http://192.168.0.120:2379**"

\# etcd config key.  This is the configuration key that flannel queries

\# For address range assignment

FLANNEL\_ETCD\_KEY=" **/atomic.io/network**"

8 设置etcd config的值

\# 创建一个文件内容如下，Network指定的IP将为以后容器运行的网段：

cat flannel-config.json

"Network":"172.16.0.0/16",

"SubnetLen":24,

"Backend":\{

"Type":"vxlan",

"VNI":1

\# 通过文件内容来设置etc的config

**etcdctl set atomic.io/network/config < flannel-config.json**

9 启动flannel服务

systemctl start flanneld

systemctl enable flanneld

到这里Master就安装配置完毕，执行下面命令可以查看master信息：

kubectl cluster-info

====

Nodes

====

每个节点上都要做如下的安装配置，这里以107节点为例（已安装docker为前提）

1 安装kubernetes和flannel

**yum -y install kubernetes flannel**

2 修改/etc/kubernetes/config

KUBE\_MASTER=" **--master=http://192.168.0.120:8080**"

3 修改/etc/kubernetes/kubelet

\# The address for the info server to serve on (set to 0.0.0.0 or "" for all interfaces)

KUBELET\_ADDRESS=" **--address=0.0.0.0**"

\# You may leave this blank to use the actual hostname

KUBELET\_HOSTNAME=" **--hostname-override=node107.kuber.com**"

\# location of the api-server

KUBELET\_API\_SERVER=" **--api-servers=http://192.168.0.120:8080**"

4 修改/etc/sysconfig/flanneld

\# etcd url location.  Point this to the server where etcd runs

FLANNEL\_ETCD=" **http://192.168.0.120:2379**"

5 启动flannel和kube相关服务  
\# 注意Node和Master上启动的kube的服务是不一样的

systemctl start **flanneld kube-proxy kubelet**

systemctl enable flanneld kube-proxy kubelet

\# 重启docker服务

systemctl restart docker

到此，Node节点配置完毕，可以在Master上执行下面命令查看节点信息

kubectl get nodes  
  
参考文章：  
[http://blog.163.com/qiushuhui1989@126/blog/static/27011089201601245331656/][http_blog.163.com_qiushuhui1989_126_blog_static_27011089201601245331656]

[http_blog.163.com_qiushuhui1989_126_blog_static_27011089201601245331656]: http://blog.163.com/qiushuhui1989@126/blog/static/27011089201601245331656/

Kubernetes学习笔记---安装

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