准备三台虚拟机

• [mw_shl_code=applescript,true]kubemaster: 192.168.1.99
  kube2: 192.168.1.109
  kube3: 192.168.1.167[/mw_shl_code]
  

配置hosts及免密登录

• [mw_shl_code=applescript,true]192.168.1.99 kubemaster
  192.168.1.109 kube2
  192.168.1.167 kube3
  [/mw_shl_code]
  

关闭 SELinux 和 swap

三台虚拟机:

command:

[mw_shl_code=applescript,true]setenforce 0
sed -i --follow-symlinks 's/SELINUX=enforcing/SELINUX=disabled/g' /etc/sysconfig/selinux[/mw_shl_code]

command:

[mw_shl_code=applescript,true]swapoff -a[/mw_shl_code]

要保证重启生效,需要注释掉/etc/fstab 中的 swap配置:

[mw_shl_code=applescript,true]# /dev/mapper/centos-swap swap swap defaults 0 0[/mw_shl_code]

启用 br_netfilter

服务器上启用br_netfilter内核模块:

三台虚拟机:

[mw_shl_code=applescript,true]modprobe br_netfilter

echo '1' > /proc/sys/net/bridge/bridge-nf-call-iptables[/mw_shl_code]

安装 Docker-ce

三台虚拟机:

command:

[mw_shl_code=applescript,true]yum install -y yum-utils device-mapper-persistent-data lvm2
[/mw_shl_code]

添加 Docker-ce yum源:

[mw_shl_code=applescript,true]yum-config-manager --add-repo https://download.docker.com/linux/centos/docker-ce.repo[/mw_shl_code]

安装 Docker-ce:

[mw_shl_code=applescript,true]yum install -y docker-ce
[/mw_shl_code]

安装 Kubernetes

配置k8s yum  /etc/yum.repos.d/kubernetes.repo :

[mw_shl_code=applescript,true][kubernetes]
name=Kubernetes
baseurl=http://mirrors.aliyun.com/kubernetes/yum/repos/kubernetes-el7-x86_64
enabled=1
gpgcheck=0
repo_gpgcheck=0
gpgkey=http://mirrors.aliyun.com/kubernetes/yum/doc/yum-key.gpg
       http://mirrors.aliyun.com/kubernetes/yum/doc/rpm-package-key.gpg
[/mw_shl_code]

安装  k8s管理组件:

三台虚拟机:

[mw_shl_code=applescript,true]yum install -y kubelet kubeadm kubectl[/mw_shl_code]
开机自启动docker、kubelet


[mw_shl_code=applescript,true]systemctl enable docker
systemclt start docker
systemctl enable kubelet
[/mw_shl_code]
初始化 Kubernetes 集群

master机器：

[mw_shl_code=applescript,true]kubeadm init --kubernetes-version=v1.14.1  --pod-network-cidr=10.244.0.0/16 --ignore-preflight-errors=Swap  [/mw_shl_code]
初始化成功如图：



配置 Kubernetes



依次执行：


[mw_shl_code=applescript,true]mkdir -p $HOME/.kube
sudo cp -i /etc/kubernetes/admin.conf $HOME/.kube/config
sudo chown $(id -u):$(id -g) $HOME/.kube/config[/mw_shl_code]

部署 flannel 网络
[mw_shl_code=applescript,true]kubectl apply -f https://raw.githubusercontent.com/coreos/flannel/master/Documentation/kube-flannel.yml[/mw_shl_code]
node节点上执行如图中命令将自己加入k8s集群

准备三台虚拟机

• [mw_shl_code=applescript,true]kubemaster: 192.168.1.99
  kube2: 192.168.1.109
  kube3: 192.168.1.167[/mw_shl_code]
  

配置hosts及免密登录

• [mw_shl_code=applescript,true]192.168.1.99 kubemaster
  192.168.1.109 kube2
  192.168.1.167 kube3
  [/mw_shl_code]
  

关闭 SELinux 和 swap

三台虚拟机:

command:

[mw_shl_code=applescript,true]setenforce 0
sed -i --follow-symlinks 's/SELINUX=enforcing/SELINUX=disabled/g' /etc/sysconfig/selinux[/mw_shl_code]

command:

[mw_shl_code=applescript,true]swapoff -a[/mw_shl_code]

要保证重启生效,需要注释掉/etc/fstab 中的 swap配置:

[mw_shl_code=applescript,true]# /dev/mapper/centos-swap swap swap defaults 0 0[/mw_shl_code]

启用 br_netfilter

服务器上启用br_netfilter内核模块:

三台虚拟机:

[mw_shl_code=applescript,true]modprobe br_netfilter

echo '1' > /proc/sys/net/bridge/bridge-nf-call-iptables[/mw_shl_code]

安装 Docker-ce

三台虚拟机:

command:

[mw_shl_code=applescript,true]yum install -y yum-utils device-mapper-persistent-data lvm2
[/mw_shl_code]

添加 Docker-ce yum源:

[mw_shl_code=applescript,true]yum-config-manager --add-repo https://download.docker.com/linux/centos/docker-ce.repo[/mw_shl_code]

安装 Docker-ce:

[mw_shl_code=applescript,true]yum install -y docker-ce
[/mw_shl_code]

安装 Kubernetes

配置k8s yum  /etc/yum.repos.d/kubernetes.repo :

[mw_shl_code=applescript,true][kubernetes]
name=Kubernetes
baseurl=http://mirrors.aliyun.com/kubernetes/yum/repos/kubernetes-el7-x86_64
enabled=1
gpgcheck=0
repo_gpgcheck=0
gpgkey=http://mirrors.aliyun.com/kubernetes/yum/doc/yum-key.gpg
       http://mirrors.aliyun.com/kubernetes/yum/doc/rpm-package-key.gpg
[/mw_shl_code]

安装  k8s管理组件:

三台虚拟机:

[mw_shl_code=applescript,true]yum install -y kubelet kubeadm kubectl[/mw_shl_code]
开机自启动docker、kubelet


[mw_shl_code=applescript,true]systemctl enable docker
systemclt start docker
systemctl enable kubelet
[/mw_shl_code]
初始化 Kubernetes 集群

master机器：

[mw_shl_code=applescript,true]kubeadm init --kubernetes-version=v1.14.1  --pod-network-cidr=10.244.0.0/16 --ignore-preflight-errors=Swap  [/mw_shl_code]
初始化成功如图：



配置 Kubernetes



依次执行：


[mw_shl_code=applescript,true]mkdir -p $HOME/.kube
sudo cp -i /etc/kubernetes/admin.conf $HOME/.kube/config
sudo chown $(id -u):$(id -g) $HOME/.kube/config[/mw_shl_code]

部署 flannel 网络
[mw_shl_code=applescript,true]kubectl apply -f https://raw.githubusercontent.com/coreos/flannel/master/Documentation/kube-flannel.yml[/mw_shl_code]
node节点上执行如图中命令将自己加入k8s集群