Kubernetes的安裝步驟

本篇內容主要講解“Kubernetes的安裝步驟”，感興趣的朋友不妨來看看。本文介紹的方法操作簡單快捷，實用性強。下面就讓小編來帶大家學習“Kubernetes的安裝步驟”吧!

Kubernetes安裝環境

Centos7.1系統的機器3臺

Master：192.168.0.120

Nodes：192.168.0.106, 192.168.0.107 

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Master

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1 在Master上安裝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文件可以通過命令生成：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. 設為全部監聽

KUBE_API_ADDRESS="--address=0.0.0.0"

# Comma separated list of nodes in the etcd cluster . 指定etcd節點的地址

KUBE_ETCD_SERVERS="--etcd-servers=http://192.168.0.120:2379"

# Address range to use for services. 這個是設置今后運行Service所在的ip網段

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 啟動etcd和kubernetes的服務

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 設置etcd config的值

# 創建一個文件內容如下，Network指定的IP將為以后容器運行的網段：

cat flannel-config.json

{

  "Network":"172.16.0.0/16",

  "SubnetLen":24,

  "Backend":{

    "Type":"vxlan",

    "VNI":1

  }

}

# 通過文件內容來設置etc的config

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

9 啟動flannel服務 

systemctl start flanneld

systemctl enable flanneld

到這里Master就安裝配置完畢，執行下面命令可以查看master信息：

kubectl cluster-info

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Nodes

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每個節點上都要做如下的安裝配置，這里以107節點為例（已安裝docker為前提）

1 安裝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 啟動flannel和kube相關服務
# 注意Node和Master上啟動的kube的服務是不一樣的

systemctl start flanneld kube-proxy kubelet

systemctl enable flanneld kube-proxy kubelet

# 重啟docker服務

systemctl restart docker

到此，Node節點配置完畢，可以在Master上執行下面命令查看節點信息

kubectl get nodes

到此，相信大家對“Kubernetes的安裝步驟”有了更深的了解，不妨來實際操作一番吧！這里是億速云網站，更多相關內容可以進入相關頻道進行查詢，關注我們，繼續學習！