Kubernetes cluster setup in centos

step1:

setenforce 0

step2:

net.bridge.bridge-nf-call-ip6tables =  1

net.bridge.bridge-nf-call-iptables = 1

step3:

vi /etc/fstab

step4:

[root@kubenode1 ~]# cat  /etc/yum.repos.d/kubernetes.repo

[kubernetes]

name=Kubernetes

baseurl=https://packages.cloud.google.com/yum/repos/kubernetes-el7-x86_64

enabled=1

gpgcheck=1

repo_gpgcheck=1

gpgkey=https://packages.cloud.google.com/yum/doc/yum-key.gpg https://packages.cloud.google.com/yum/doc/rpm-package-key.gpg

setp5:

yum install –y kubectl kubeadm kubelet docker

yum-config-manager --enable *addons

yum repolist

wget http://yum.oracle.com/public-yum-ol7.repo

mv public-yum-ol7.repo.1 public-yum-ol7.repo

yum-config-manager --enable *addons

yum install docker-engine

step6:

If docker not install

vi  /etc/yum.repos.d/public-yum-ol7.repo

[ol7_latest]

name=Oracle Linux $releasever Latest ($basearch)

baseurl=http://yum.oracle.com/repo/OracleLinux/OL7/latest/$basearch/

gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-oracle

gpgcheck=1

enabled=1

[ol7_UEKR4]

name=Latest Unbreakable Enterprise Kernel Release 4 for Oracle Linux $releasever ($basearch)

baseurl=http://yum.oracle.com/repo/OracleLinux/OL7/UEKR4/$basearch/

gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-oracle

gpgcheck=1

enabled=1

[ol7_addons]

name=Oracle Linux $releasever Add ons ($basearch)

baseurl=http://yum.oracle.com/repo/OracleLinux/OL7/addons/$basearch/

gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-oracle

gpgcheck=1

enabled=1

vi  /etc/yum.repos.d/public-yum-ol7.repo

yum-config-manager --enable ol7_addon

systemctl enable docker

systemctl start docekr

systemctl start docker

yum install -y kubelet kubeadm kubectl

systemctl enable kubelet

systemctl start kubelet

kubeadm init –pod-network-cidr=10.244.0.0./16

kubectl apply -f https://raw.githubusercontent.com/coreos/flannel/bc79dd1505b0c8681ece4de4c0d86c5cd2643275/Documentation/kube-flannel.yml

kubeadm token create --print-join-command