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K8S集群搭建案例

参考文档:
https://yq.aliyun.com/articles/419570?spm=5176.10695662.1996646101.searchclickresult.547174c9nMJ4R6

 

编辑 hosts文件(主节点):

echo "`ifconfig  | grep broadcast | awk -F'netmask' '{print $1}' | awk -F' ' '{print $2}'` k8s-master " >> /etc/hosts
echo "`ifconfig  | grep broadcast | awk -F'netmask' '{print $1}' | awk -F' ' '{print $2}'` etcd" >> /etc/hosts
echo "`ifconfig  | grep broadcast | awk -F'netmask' '{print $1}' | awk -F' ' '{print $2}'` registry" >> /etc/hosts 
echo  "nodeip k8s-node-1" >> /etc/hosts   #nodeip 替换为node节点的ip地址

 

将配置好的hosts文件拷贝到Node节点:

scp /etc/hosts root@k8s-node-1:/etc/hosts

  

 

环境准备(Master节点):

hostnamectl --static set-hostname  k8s-master

环境准备(Slave节点):

hostnamectl --static set-hostname  k8s-node-1

 

关闭防火墙(主、备节点上都执行):

systemctl disable firewalld.service
systemctl stop firewalld.service  

关闭SELinux:

setenforce 0
sed -i 's#SELINUX=enforcing#SELINUX=disabled#g' /etc/selinux/config 

 

在Master节点上需要安装的服务(点击相应的服务会打开对应的服务的安装配置方法)

docker | etcd | flannel | kube-apiserver、kube-scheduler、kube-controller-manager (yum -y install kubernetes 后启动这三个服务) ]   <验证集群状态:>

在Slave(Node)节点上需要安装的服务:
[ dockerflannel | kubelet、kube-proxy (yum -y install kubernetes 后启动这两个个服务) ] 

 

1.解决kubectl get pods时 No resources found的问题: [如果K8S部署是按照上文来的,不会发生此问题]

1、vi /etc/kubernetes/apiserver
2、找到
"KUBE_ADMISSION_CONTROL="--admission_control=NamespaceLifecycle,NamespaceExists,LimitRanger,SecurityContextDeny,ServiceAccount,ResourceQuota",去掉ServiceAccount,保存退出。
3、systemctl restart kube-apiserver
 

2.解决在pul镜像image的时候没有凭据,没有redhat-ca.crt文件的问题:  [如果K8S部署是按照上文来的,不会发生此问题]

[具体报错:Trying to pull repository registry.access.redhat.com/rhel7/pod-infrastructure ...  open /etc/docker/certs.d/registry.access.redhat.com/redhat-ca.crt: no such file or directory]

wget http://mirror.centos.org/centos/7/os/x86_64/Packages/python-rhsm-certificates-1.19.10-1.el7_4.x86_64.rpm
rpm2cpio python-rhsm-certificates-1.19.10-1.el7_4.x86_64.rpm | cpio -iv --to-stdout ./etc/rhsm/ca/redhat-uep.pem | tee /etc/rhsm/ca/redhat-uep.pem    
//前两个命令会生成/etc/rhsm/ca/redhat-uep.pem文件.     
docker pull registry.access.redhat.com/rhel7/pod-infrastructure:latest

  

 

posted on 2019-08-21 00:47  流觞区直  阅读(317)  评论(0编辑  收藏  举报