命令记不住

kuadmin部署k8s1.16.3

1.系统环境准备

基础环境

[root@tike ~]# systemctl stop firewalld
[root@tike ~]# selinux=disabled
[root@tike ~]# swapoff -a

修改系统参数

# 创建 /etc/sysctl.d/k8s.conf 文件

[root@tike ~]# cat > /etc/sysctl.d/k8s.conf << EOF
net.ipv4.ip_forward = 1
net.bridge.bridge-nf-call-ip6tables = 1
net.bridge.bridge-nf-call-iptables = 1
EOF

生效配置文件

[root@tike ~]# modprobe br_netfilter
[root@tike ~]# sysctl -p /etc/sysctl.d/k8s.conf

修改hosts

[root@tike ~]# cat > /etc/hosts << EOF
master 192.168.200.221
node1 192.168.200.222
node2 192.168.200.223
EOF

安装docker

[root@tike ~]# yum-config-manager --add-repo http://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo
[root@tike ~]# yum list docker-ce --showduplicates | sort -r
[root@tike ~]# yum install docker-ce-18.06.1.ce-3.el7 -y

启动

[root@tike ~]# systemctl enable docker
[root@tike ~]# systemctl start docker

2.安装kubeadm、kubelet、kubectl

每个节点都安装

1)配置可用的国内yum源用于安装

[root@tike ~]# 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=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

官网的yum源如下

[root@tike ~]# cat <<EOF > /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
exclude=kube*
EOF

2)安装kubeadm、kubelet、kubectl

查看相关版本，然后来选择
[root@tike ~]# yum list kubelet --showduplicates | sort -r
[root@tike ~]# yum list kubeadm --showduplicates | sort -r
[root@tike ~]# yum list kubectl --showduplicates | sort -r
指定版本
[root@tike ~]# yum install -y kubeadm-1.16.3-0 kubelet-1.16.3-0 kubectl-1.16.3-0
安装，默认最新版
[root@tike ~]# yum install -y kubelet kubeadm kubectl
安装 kubeadm 时候会默认安装 kubectl ，所以不需要单独安装kubectl
[root@tike ~]# systemctl daemon-reload && systemctl enable kubelet && systemctl start kubelet 

3.启动K8S集群

kubeadm init

kubeadm init --apiserver-advertise-address=172.16.18.131 --image-repository registry.aliyuncs.com/google_containers --ignore-preflight-errors=all  --kubernetes-version v1.16.3 --service-cidr=10.96.0.0/12 --pod-network-cidr=10.244.0.0/16

--apiserver-advertise-address填写master机器网卡ip

4.安装网络插件

kubectl apply -f https://raw.githubusercontent.com/coreos/flannel/2140ac876ef134e0ed5af15c65e414cf26827915/Documentation/kube-flannel.yml

5.节点加入

Your Kubernetes control-plane 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/

Then you can join any number of worker nodes by running the following on each as root:

kubeadm join 172.16.18.131:6443 --token 9x2xi2.y3a7iqy1yac6znwy \
    --discovery-token-ca-cert-hash sha256:152ca572bf26b0b6bbe8f55ac93054714405f0cca2689c362126844e8853361d

6.查看当前集群

[tikr@1hao7-tianbaochao ~]$ sudo   kubectl get  nodes
NAME                             STATUS   ROLES    AGE   VERSION
1hao7-tianbaochao.novalocal      Ready    master   48m   v1.16.3
taike-002-fengruolin.novalocal   Ready    <none>   40m   v1.16.3
taike-003-fengruolin.novalocal   Ready    <none>   11m   v1.16.3
taike-005-fengruolin.novalocal   Ready    <none>   23m   v1.16.3
taike-006-fengruolin.novalocal   Ready    <none>   21m   v1.16.3
taike-007-fengruolin.novalocal   Ready    <none>   22m   v1.16.3
taike-008-fengruolin.novalocal   Ready    <none>   22m   v1.16.3
taike-009-fengruolin.novalocal   Ready    <none>   22m   v1.16.3
taike-010-fengruolin.novalocal   Ready    <none>   26m   v1.16.3