CentOS7 kubernetes安装

国内环境安装kubernetes

利用阿里云提供的镜像

添加repo

添加docker的repo

cat >>  /etc/yum.repos.d/docker.repo  <<EOF
[dockerrepo]
name=Docker Repository
baseurl=https://yum.dockerproject.org/repo/main/centos/$releasever/
enabled=1
gpgcheck=1
gpgkey=https://yum.dockerproject.org/gpg
EOF

添加kubernetes的repo

cat >>  /etc/yum.repos.d/kubernetes.repo  <<EOF
[kubernetes]
name=Kubernetes
baseurl=https://mirrors.aliyun.com/kubernetes/yum/repos/kubernetes-el7-x86_64/
enabled=1
gpgcheck=0
EOF

安装

yum install docker-1.12.6-61.git85d7426.el7.centos.x86_64
yum install kubeadm

设置

setenforce 0
systemctl enable docker
systemctl start docker
systemctl enable kubelet
cat <<EOF >  /etc/sysctl.d/k8s.conf
net.bridge.bridge-nf-call-ip6tables = 1
net.bridge.bridge-nf-call-iptables = 1
EOF
sysctl --system

下载镜像

建立pullImage.sh文件

#!/bin/bash
KUBE_VERSION=v1.7.5
KUBE_PAUSE_VERSION=3.0
ETCD_VERSION=3.0.17
DNS_VERSION=1.14.4

images=(kube-proxy-amd64:${KUBE_VERSION}
kube-scheduler-amd64:${KUBE_VERSION}
kube-controller-manager-amd64:${KUBE_VERSION}
kube-apiserver-amd64:${KUBE_VERSION}
pause-amd64:${KUBE_PAUSE_VERSION}
etcd-amd64:${ETCD_VERSION}
k8s-dns-sidecar-amd64:${DNS_VERSION}
k8s-dns-kube-dns-amd64:${DNS_VERSION}
k8s-dns-dnsmasq-nanny-amd64:${DNS_VERSION})

GCR_URL=gcr.io/google_containers
ALIYUN_URL=mirrorgooglecontainers

for imageName in ${images[@]} ; do
  docker pull $ALIYUN_URL/$imageName
  docker tag $ALIYUN_URL/$imageName $GCR_URL/$imageName
done

运行sh文件下载镜像

chmod +x pullImage.sh
./pullImage.sh

建立集群master

kubeadm init --apiserver-advertise-address=本机ip --kubernetes-version=v1.7.5 --pod-network-cidr=10.244.0.0/12

mkdir -p $HOME/.kube
sudo cp -i /etc/kubernetes/admin.conf $HOME/.kube/config
sudo chown $(id -u):$(id -g) $HOME/.kube/config

kubectl --namespace kube-system apply -f https://raw.githubusercontent.com/coreos/flannel/v0.8.0/Documentation/kube-flannel-rbac.yml
rm -rf kube-flannel.yml 
wget https://raw.githubusercontent.com/coreos/flannel/v0.8.0/Documentation/kube-flannel.yml
sed -i 's/quay.io\/coreos\/flannel:v0.8.0-amd64/registry.cn-hangzhou.aliyuncs.com\/szss_k8s\/flannel:v0.8.0-amd64/g' ./kube-flannel.yml
kubectl --namespace kube-system apply -f ./kube-flannel.yml

验证主节点状态

kubectl get cs