master01:192.168.1.110 （最少2核CPU）
node01:192.168.1.100
规划
services网络：10.96.0.0/12
pod网络：10.244.0.0/16
1.配置hosts解析各主机
vim /etc/hosts
127.0.0.1 localhost localhost.localdomain localhost4 localhost4.localdomain4
::1 localhost localhost.localdomain localhost6 localhost6.localdomain6
192.168.1.110 master01
192.168.1.100 node01
2.同步各主机时间
yum install -y ntpdate
ntpdate time.windows.com
14 Mar 16:51:32 ntpdate[46363]: adjust time server 13.65.88.161 offset -0.001108 sec
3.关闭SWAP，关闭selinux
swapoff -a
vim /etc/selinux/config
# This file controls the state of SELinux on the system.
# SELINUX= can take one of these three values:
# enforcing - SELinux security policy is enforced.
# permissive - SELinux prints warnings instead of enforcing.
# disabled - No SELinux policy is loaded.
SELINUX=disabled
4.安装docker-ce
yum install -y yum-utils device-mapper-persistent-data lvm2
yum-config-manager --add-repo CentOS/docker-ce.repo
yum makecache fast
yum -y install docker-ce
Docker 安装后出现：WARNING: bridge-nf-call-iptables is disabled 的解决办法
vim /etc/sysctl.conf
# sysctl settings are defined through files in
# /usr/lib/sysctl.d/, /run/sysctl.d/, and /etc/sysctl.d/.
#
# Vendors settings live in /usr/lib/sysctl.d/.
# To override a whole file, create a new file with the same in
# /etc/sysctl.d/ and put new settings there. To override
# only specific settings, add a file with a lexically later
# name in /etc/sysctl.d/ and put new settings there.
#
# For more information, see sysctl.conf(5) and sysctl.d(5).
net.bridge.bridge-nf-call-ip6tables=1
net.bridge.bridge-nf-call-iptables=1
net.bridge.bridge-nf-call-arptables=1
systemctl enable docker && systemctl start docker
5.安装kubernetes
cat <<EOF > /etc/yum.repos.d/kubernetes.repo
[kubernetes]
name=Kubernetes
baseurl=https://mirrors.aliyun.com/kubernetes/yum/repos/kubernetes-el7-x86_64/
enabled=1
gpgcheck=1
repo_gpgcheck=1
gpgkey=https://mirrors.aliyun.com/kubernetes/yum/doc/yum-key.gpg https://mirrors.aliyun.com/kubernetes/yum/doc/rpm-package-key.gpg
EOF
setenforce 0
yum install -y kubelet kubeadm kubectl
systemctl enable kubelet && systemctl start kubelet
6.初始化集群
kubeadm init --image-repository registry.aliyuncs.com/google_containers --kubernetes-version v1.13.1 --pod-network-cidr=10.244.0.0/16
Your Kubernetes master has initialized successfully!
To start using your cluster, you need to run the following as a regular user:
mkdir -p $HOME/.kube
sudo cp -i /etc/kubernetes/admin.conf $HOME/.kube/config
sudo chown $(id -u):$(id -g) $HOME/.kube/config
You should now deploy a pod network to the cluster.
Run "kubectl apply -f [podnetwork].yaml" with one of the options listed at:
https://kubernetes.io/docs/concepts/cluster-administration/addons/
You can now join any number of machines by running the following on each node
as root:
kubeadm join 192.168.1.110:6443 --token wgrs62.vy0trlpuwtm5jd75 --discovery-token-ca-cert-hash sha256:6e947e63b176acf976899483d41148609a6e109067ed6970b9fbca8d9261c8d0
7.手动部署flannel
flannel网址：https://github.com/coreos/flannel
for Kubernetes v1.7+
kubectl apply -f https://raw.githubusercontent.com/coreos/flannel/master/Documentation/kube-flannel.yml
podsecuritypolicy.extensions/psp.flannel.unprivileged created
clusterrole.rbac.authorization.k8s.io/flannel created
clusterrolebinding.rbac.authorization.k8s.io/flannel created
serviceaccount/flannel created
configmap/kube-flannel-cfg created
daemonset.extensions/kube-flannel-ds-amd64 created
daemonset.extensions/kube-flannel-ds-arm64 created
daemonset.extensions/kube-flannel-ds-arm created
daemonset.extensions/kube-flannel-ds-ppc64le created
daemonset.extensions/kube-flannel-ds-s390x created
8.node配置
安装docker kubelet kubeadm
docker安装同步骤4，kubelet kubeadm安装同步骤5
9.node加入到master
kubeadm join 192.168.1.110:6443 --token wgrs62.vy0trlpuwtm5jd75 --discovery-token-ca-cert-hash sha256:6e947e63b176acf976899483d41148609a6e109067ed6970b9fbca8d9261c8d0
kubectl get nodes #查看node状态
NAME STATUS ROLES AGE VERSION
localhost.localdomain NotReady <none> 130m v1.13.4
master01 Ready master 4h47m v1.13.4
node01 Ready <none> 94m v1.13.4
kubectl get cs #查看组件状态