使用kubeadm安装k8s系统

使用kubeadm安装k8s系统

各节点必须能上网，cpu个数要大于等于2master 192.168.1.63node1 192.168.1.62node2 192.168.1.64

配置master

配置主机名互相解析[root@master ~]#vim /etc/hosts192.168.1.63 master.example.com master192.168.1.62 node1.example.com node1192.168.1.64 node2.example.com node2关闭selinux[root@master ~]#vim /etc/selinux/config SELINUX=disabled[root@master ~]#setenforce 0关闭防火墙[root@master ~]#systemctl stop firewalld[root@master ~]#systemctl disable firewalld准备yum源[root@master ~]#cd /etc/yum.repos.d/[root@master yum.repos.d]#wget yum.repos.d]#wget yum.repos.d]#vim k8s.repo[k8s]name=k8s repositorybaseurl=~]#yum repolist和网络时间同步[root@master ~]#yum -y install ntp ntpdate[root@master ~]#ntpdate ntp1.aliyun.com[root@master ~]#hwclock --systohc关闭swap[root@master ~]#swapoff -a[root@master ~]#vim /etc/fstab #/dev/mapper/centos-swap swap swap defaults 0 0 #注释该行[root@master ~]#echo 1 >/proc/sys/net/bridge/bridge-nf-call-iptables启动服务[root@master ~]#yum -y install docker kubelet kubeadm kubectl[root@master ~]#vim /etc/sysconfig/kubelet KUBELET_EXTRA_ARGS="--fail-swap-on=false"[root@master ~]#systemctl start docker[root@master ~]#systemctl enable docker[root@master ~]#systemctl start kubelet[root@master ~]#systemctl enable kubelet初始化master[root@master ~]#kubeadm init --kubernetes-version=1.18.2 --image-repository registry.aliyuncs.com/google_containers --service-cidr=10.1.0.0/16 --pod-network-cidr=10.244.0.0/16 --v=5[root@master ~]mkdir -p $HOME/.kube[root@master ~]udo cp -i /etc/kubernetes/admin.conf $HOME/.kube/config[root@master ~]sudo chown $(id -u):$(id -g) $HOME/.kube/config准备网络[root@master ~]#kubectl apply -f "version | base64 | tr -d '\n')"查看[root@master ~]# kubectl get cs[root@master ~]# kubectl get nodes[root@master ~]# kubectl get pods -n kube-system -o wide

node加入k8s集群

配置主机名互相解析[root@node1 ~]#vim /etc/hosts192.168.1.63 master.example.com master192.168.1.62 node1.example.com node1192.168.1.64 node2.example.com node2关闭selinux[root@node1 ~]#vim /etc/selinux/config SELINUX=disabled[root@node1 ~]#setenforce 0关闭防火墙[root@node1 ~]#systemctl stop firewalld[root@node1 ~]#systemctl disable firewalld准备yum源[root@node1 ~]#cd /etc/yum.repos.d/[root@node1 yum.repos.d]#wget yum.repos.d]#wget yum.repos.d]#vim k8s.repo[k8s]name=k8s repositorybaseurl=~]#yum -y install ntp ntpdate[root@node1 ~]#ntpdate ntp1.aliyun.com[root@node1 ~]#hwclock --systohc关闭swap[root@node1 ~]#swapoff -a[root@node1 ~]#vim /etc/fstab #/dev/mapper/centos-swap swap swap defaults 0 0 #注释该行[root@master ~]#echo 1 >/proc/sys/net/bridge/bridge-nf-call-iptables启动服务[root@node1 ~]#yum -y install docker kubelet kubeadm kubectl[root@node1 ~]#vim /etc/sysconfig/kubelet KUBELET_EXTRA_ARGS="--fail-swap-on=false"[root@node1 ~]#systemctl start docker[root@node1 ~]#systemctl enable docker[root@node1 ~]#systemctl start kubelet[root@node1 ~]#systemctl enable kubelet[root@node1 ~]#kubeadm join 192.168.1.63:6443 --token af3v18.0hclgjvasty9zkgr --discovery-token-ca-cert-hash sha256:97228f61c0a91f7e8445e4297546a91550ad4346a8eee875611f3a0900eb在master上查看[root@master ~]# kubectl get nodes[root@master ~]# kubectl describe node node1[root@master ~]# kubectl get nodes[root@master ~]# kubectl get pods -n kube-system -o wide

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