CentOS7 under Yum installation kubernetes

1. Node planning

Node	Ip	Hostname	Hardware
Master	192.168.80.136	Master	Memory 2G cpu:2*1
Node1	192.168.80.137	Node1	Memory 2G cpu:2*1
Node2	192.168.80.138	Node2	Memory 2G cpu:2*1
Etcd	192.168.80.139	Etcd	Memory 2G cpu:2*1

2. System configuration (All machines)

• Turn off SELinux

• 0  /etc/selinux/config selinux=disabled

• Shutting down and disabling the firewall

• 
  $ systemctl Disable FIREWALLD

• Modify hostname

• vi/ect/hostname# Four machines were modified to MASTERNODE1NODE2ETCD

• Modify the Hosts file

• $ vim/etc/hosts127.0. 0.1    localhost localhost.localdomain localhost4 localhost4.localdomain4::1  localhost Localhost.localdomain localhost6 localhost6.localdomain6192.168. 80.136 Master 192.168. 80.137 Node1 192.168. 80.138 Node2 192.168. 80.139 Etcd

• SSH Password-free login

• $ ssh-keygen # All the way to the  default can be $ ssh-copy-id   {Other machine's IP}

• Update Yum

$ yum Update

• Installing related components

• $ yum install-y etcd kubernetes NTP flannel

3, each node configuration

• ETCD Server

• # Modify config file $ vim/etc/etcd/etcd.conf Etcd_name=defaultEtcd_data_dir="/var/lib/etcd/default.etcd"Etcd_listen_client_urls="http://localhost:2379,http://192.168.80.139:2379"Etcd_advertise_client_urls="http://192.168.80.139:2379"# Start Service $ systemctl start ETCD $ systemctl enable etcd# check ETCD cluster status $ etcdctl cluster-Health member 8e9e05c52164694d isHealthy:got Healthy Result fromhttp//192.168.80.139:2379Cluster isHealthy
  
  # Set a key and the following will be used
  Etcdctl set/k8s/network/config ' {"Network": "10.255.0.0/16"} '

• master server

• # Configure kube-apiserver configuration file $ vim/etc/kubernetes/config Kube_logtostderr="--logtostderr=true"Kube_log_level="--v=0"Kube_allow_priv="--allow-privileged=false"Kube_master="--master=http://192.168.80.136:8080"$ vim/etc/kubernetes/apiserverkube_api_address="--insecure-bind-address=0.0.0.0"kube_etcd_servers="--etcd-servers=http://192.168.80.139:2379"kube_service_addresses="--SERVICE-CLUSTER-IP-RANGE=10.254.0.0/16"Kube_admission_control="--admission-control=alwaysadmit"Kube_api_args=""#配置kube-Scheduler configuration file Vim/etc/kubernetes/Scheduler Kube_scheduler_args="--address=0.0.0.0"# Start Service forSERVICESinchKube-apiserver Kube-controller-manager kube-Scheduler Dosystemctl Restart $SERVICESdone

• Node1 node

• # Configure Node1 network $ vim/etc/sysconfig/Flanneld flannel_etcd_endpoints="http://192.168.80.139:2379"Flannel_etcd_prefix="/k8s/network"flannel_options="--iface=ens33"# ENS is the currently available Internet Adapter Name # config Node1 kube-proxy$ Vim/etc/kubernetes/config Kube_logtostderr="--logtostderr=true"Kube_log_level="--v=0"Kube_allow_priv="--allow-privileged=false"Kube_master="--master=http://192.168.80.136:8080"$ vim/etc/kubernetes/Proxy Kube_proxy_args="--bind=address=0.0.0.0"# Configure Node1 kubelet$ vim/etc/kubernetes/Kubelet kubelet_address="--address=127.0.0.1"Kubelet_hostname="--hostname-override=node1"Kubelet_api_server="--api-servers=http://192.168.80.136:8080"Kubelet_pod_infra_container="--pod-infra-container-image=registry.access.redhat.com/rhel7/pod-infrastructure:latest"Kubelet_args=""# start Node1 service forSERVICESinchFlanneld Kube-proxy Kubelet; Dosystemctl Restart $SERVICES systemctl enable $SERVICES systemctl status $SERVICES done

• Node2 node

• # Configure Node2 network $ vim/etc/sysconfig/Flanneld flannel_etcd_endpoints="http://192.168.80.139:2379"Flannel_etcd_prefix="/k8s/network"flannel_options="--iface=ens33"# Configure Node2 kube-proxy$ Vim/etc/kubernetes/config Kube_logtostderr="--logtostderr=true"Kube_log_level="--v=0"Kube_allow_priv="--allow-privileged=false"Kube_master="--master=http://192.168.80.136:8080"$ vim/etc/kubernetes/Proxy Kube_proxy_args="--bind-address=0.0.0.0"# Configure Node2 kubelet$ vim/etc/kubernetes/Kubelet kubelet_address="--address=127.0.0.1"Kubelet_hostname="--hostname-override=node1"Kubelet_api_server="--api-servers=http://192.168.80.136:8080"Kubelet_pod_infra_container="--pod-infra-container-image=registry.access.redhat.com/rhel7/pod-infrastructure:latest"Kubelet_args=""# start Node2 service forSERVICESinchFlanneld Kube-proxy Kubelet Docker; Dosystemctl Restart $SERVICES systemctl enable $SERVICES systemctl status $SERVICES done

4. Testing

Get Nodesname      STATUS    AGEnode1     ready     55mnode2     ready     54m

5. Reference article:

55015284

Https://www.kubernetes.org.cn/3096.html

CentOS7 under Yum installation kubernetes