本篇内容主要讲解“Kubernetes的安装步骤”，感兴趣的朋友不妨来看看。本文介绍的方法操作简单快捷，实用性强。下面就让小编来带大家学习“Kubernetes的安装步骤”吧!
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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
到此，相信大家对“Kubernetes的安装步骤”有了更深的了解，不妨来实际操作一番吧！这里是创新互联网站，更多相关内容可以进入相关频道进行查询，关注我们，继续学习！
