k8s安装

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#运维

关闭防火墙
systemctl stop firewalld
systemctl disable firewalld

关闭selinux
sed -i ‘s/enforcing/disabled/’ /etc/selinux/config #永久

关闭 swap
sed -ri ‘s/.swap./#&/’ /etc/fstab

设置主机名
hostnamectl set-hostname

将桥接的IPv4流量传递到iptables的链
cat > /etc/sysctl.d/k8s.conf << EOF
net.bridge.bredge-nf-call-ip6tables = 1
net.bridge.bredge-nf-call-iptables = 1
EOF

sysctl --system

同步时间
yum install ntdate -y
ntdate time.windows.com

安装docker
1.1 卸载之前的docker
sudo yum remove docker
docker-client
docker-client-latest
docker-common
docker-latest
docker-latest-logrotate
docker-logrotate
docker-engine

1.2 安装docker-ce
sudo yum install -y yum-utils
device-mapper-persistent-data
lvm2

设置docker repo的yum位置
sudo yum-config-manager
–add-repo
https://download.docker.com/linux/centos/docker-ce.repo

安装dockers以及docker-cli
sudo yum install -y docker-ce docker-ce-cli containerd.io

1.3.配置dockers加速
sudo mkdir -p /etc/docker
sudo tee /etc/docker/daemon.json <<-‘EOF’
{
“registry-mirrors”: [“https://cv2qdshe.mirror.aliyuncs.com”]
}
EOF
sudo systemctl daemon-reload
sudo systemctl restart docker

1.4、启动docker设置开机自启
systemctl enable docker

添加阿里云yum源
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
repo_gpgcheck=0
gpgkey=https://mirrors.aliyun.com/kubernetes/yum/doc/yum-key.gpg
https://mirrors.aliyun.com/kubernetes/yum/doc/rpm-package-key.gpg
EOF

3.安装kubeadm、kubelet和kubectl
yum list|grep kube
yum install -y kubelet-1.17.3 kubeadm-1.17.3 kubectl-1.17.3

开机启动
systemctl enable kubelet
systemctl start kubelet

部署k8s-master
4.1 master节点初始化,首先将k8s文件夹上传的master节点服务器，执行里面的master_images.sh命令，然后执行下面的命令。
kubeadm init
–apiserver-advertise-address=192.168.0.115
–image-repository registry.cn-hangzhou.aliyuncs.com/google_containers
–kubernetes-version v1.17.3
–service-cidr=10.96.0.0/16
–pod-network-cidr=10.244.0.0/16

根据提示执行下面命令
mkdir -p $HOME/.kube
sudo cp -i /etc/kubernetes/admin.conf $HOME/.kube/config
sudo chown $(i d - u) :$ (id -g) $HOME/.kube/config

设置pod网络插件，将k8s下的kube-flannel.yml应用配置
kubectl apply -f kube-flannel.yml
或者
kubectl apply -f https://raw.githubusercontent.com/coreos/flannel/master/Documentation/kube-flannel.yml

根据提示执行下面命令
kubeadm join 192.168.0.200:6443 --token 1tamph.rp3oqvwj0apux88v
–discovery-token-ca-cert-hash sha256:5a350d53557ad85ea6e6f0e8d9cbf8a36ff9708e3467d1537e780b8e8888b215

。。。。

安装helm
curl -L https://git.io/get_helm.sh | bash

创建helm-rbac.yaml
apiVersion: v1
kind: ServiceAccount
metadata:
name: tiller
namespace: kube-system

apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRoleBinding
metadata:
name: tiller
roleRef:
apiGroup: rbac.authorization.k8s.io
kind: ClusterRole
name: cluster-admin
subjects: