这篇文章给大家介绍怎么在centos 7系统中安装配置k8s集群，内容非常详细，感兴趣的小伙伴们可以参考借鉴，希望对大家能有所帮助。
配置背景介绍
kubernetes是google开源的容器集群管理系统，提供应用部署、维护、扩展机制等功能，利用kubernetes能方便管理跨集群运行容器化的应用，简称：k8s（k与s之间有8个字母）
实验环境
centos7.3 64位
安装
计算
安全
数据库
网络和加速
企业服务
yum-config-manager --add-repo https://docs.docker.com/v1.13/engine/installation/linux/repo_files/centos/docker.repo
yum makecache fast
yum -y install docker-engine-1.13.1
yum install epel-release -y
yum remove -y docker-engine*
yum install -y kubernetes etcd docker flannel修改配置文件
注意下面的10.135.163.237换成自己服务器ip
sed -i "s/localhost:2379/10.135.163.237:2379/g" /etc/etcd/etcd.conf
sed -i "s/localhost:2380/10.135.163.237:2380/g" /etc/etcd/etcd.conf
sed -i "s/10.135.163.237:2379/10.135.163.237:2379,http:\/\/127.0.0.1:2379/g" /etc/etcd/etcd.conf
sed -i "s/127.0.0.1:2379/10.135.163.237:2379/g" /etc/kubernetes/apiserver
sed -i "s/--insecure-bind-address=127.0.0.1/--insecure-bind-address=0.0.0.0/g" /etc/kubernetes/apiserver
sed -i "s/--admission-control=NamespaceLifecycle,NamespaceExists,LimitRanger,SecurityContextDeny,ServiceAccount,ResourceQuota/--admission_control=NamespaceLifecycle,NamespaceExists,LimitRanger,ResourceQuota/g" /etc/kubernetes/apiserver
sed -i "s/--hostname-override=127.0.0.1/--hostname-override=10.135.163.237/g" /etc/kubernetes/kubelet
sed -i "s/127.0.0.1:8080/10.135.163.237:8080/g" /etc/kubernetes/kubelet
sed -i "s/--address=127.0.0.1/--address=0.0.0.0/g" /etc/kubernetes/kubelet
sed -i "s/127.0.0.1:8080/10.135.163.237:8080/g" /etc/kubernetes/config
sed -i "s/127.0.0.1:2379/10.135.163.237:2379/g" /etc/sysconfig/flanneld修改host
vi /etc/hosts 10.135.163.237 k8s_master
添加网络
systemctl enable etcd.service
systemctl start etcd.service
etcdctl mk //atomic.io/network/config '{"Network":"172.17.0.0/16"}'启动服务
service docker start
for SERVICES in etcd kube-apiserver kube-controller-manager kube-scheduler kube-proxy kubelet docker flanneld ; do systemctl restart $SERVICES; systemctl enable $SERVICES; systemctl status $SERVICES; done;第一个demo
编写文件a.yaml
apiVersion: extensions/v1beta1
kind: Deployment
metadata:
name: my-app
spec:
replicas: 2
template:
metadata:
labels:
app: my-app
spec:
containers:
- name: my-app
image: registry.alauda.cn/yubang/paas_base_test
ports:
- containerPort: 80
command: ["/bin/bash", "/var/start.sh"]
resources:
limits:
cpu: 0.5
memory: 64Mi编写文件b.yaml
apiVersion: v1
kind: Service
metadata:
name: my-app-svc
labels:
app: my-app
spec:
ports:
- port: 80
targetPort: 80
nodePort: 30964
type: NodePort
selector:
app: my-app创建服务
kubectl create -f a.yaml --validate
kubectl create -f b.yaml --validate删除服务
kubectl delete -f a.yaml
kubectl delete -f b.yaml增加子节点
安装软件
yum-config-manager --add-repo https://docs.docker.com/v1.13/engine/installation/linux/repo_files/centos/docker.repo
yum makecache fast
yum -y install docker-engine-1.13.1
yum install epel-release -y
yum remove -y docker-engine*
yum install -y kubernetes docker flannel修改配置文件（10.135.163.237为主节点ip，139.199.0.29为当前节点ip）
sed -i "s/--hostname-override=127.0.0.1/--hostname-override=139.199.0.29/g" /etc/kubernetes/kubelet
sed -i "s/127.0.0.1:8080/10.135.163.237:8080/g" /etc/kubernetes/kubelet
sed -i "s/--address=127.0.0.1/--address=0.0.0.0/g" /etc/kubernetes/kubelet
sed -i "s/127.0.0.1:8080/10.135.163.237:8080/g" /etc/kubernetes/config
sed -i "s/127.0.0.1:2379/10.135.163.237:2379/g" /etc/sysconfig/flanneld
sed -i "s/--admission-control=NamespaceLifecycle,NamespaceExists,LimitRanger,SecurityContextDeny,ServiceAccount,ResourceQuota/--admission_control=NamespaceLifecycle,NamespaceExists,LimitRanger,ResourceQuota/g" /etc/kubernetes/apiserver启动服务
service docker start
for SERVICES in kube-proxy kubelet docker flanneld; do
systemctl restart $SERVICES
systemctl enable $SERVICES
systemctl status $SERVICES
done;在主服务器查看节点
kubectl get node重启服务（重新加入集群）
systemctl restart kube-apiserver.service
删除节点
kubectl delete node 节点ip关于怎么在centos 7系统中安装配置k8s集群就分享到这里了，希望以上内容可以对大家有一定的帮助，可以学到更多知识。如果觉得文章不错，可以把它分享出去让更多的人看到。
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