1.二進制包準備 將軟件包從linux-node1復制到linux-node2 linux-node3中去。

[root@linux-node1 ~]# cd /usr/local/src/kubernetes/server/bin/
[root@linux-node1 bin]# cp kubelet kube-proxy /opt/kubernetes/bin/
[root@linux-node1 bin]# scp kubelet kube-proxy 192.168.56.12:/opt/kubernetes/bin/
[root@linux-node1 bin]# scp kubelet kube-proxy 192.168.56.13:/opt/kubernetes/bin/

2.創建角色綁定

[root@linux-node1 ~]# kubectl create clusterrolebinding kubelet-bootstrap --clusterrole=system:node-bootstrapper --user=kubelet-bootstrap
clusterrolebinding "kubelet-bootstrap" created

3.創建 kubelet bootstrapping kubeconfig 文件 設置集群參數

[root@linux-node1 ~]# kubectl config set-cluster kubernetes \

4.設置客戶端認證參數

[root@linux-node1 ~]# kubectl config set-credentials kubelet-bootstrap \
--token=ad6d5bb607a186796d8861557df0d17f

紅色部分是上節第三部生成的字符串

5.設置上下文參數

[root@linux-node1 ~]# kubectl config set-context default \
--cluster=kubernetes \
--user=kubelet-bootstrap \
--kubeconfig=bootstrap.kubeconfig
Context "default" created.

6.選擇默認上下文

[root@linux-node1 ~]# kubectl config use-context default --kubeconfig=bootstrap.kubeconfig
Switched to context "default".
[root@linux-node1 kubernetes]# cp bootstrap.kubeconfig /opt/kubernetes/cfg
[root@linux-node1 kubernetes]# scp bootstrap.kubeconfig 192.168.56.12:/opt/kubernetes/cfg
[root@linux-node1 kubernetes]# scp bootstrap.kubeconfig 192.168.56.13:/opt/kubernetes/cfg

部署kubelet

1.設置CNI支持（只在node2 node3上執行即可）

[root@linux-node2 ~]# mkdir -p /etc/cni/net.d
[root@linux-node2 ~]# vim /etc/cni/net.d/10-default.conf
{
"name": "flannel",
"type": "flannel",
"delegate": {
"bridge": "docker0",
"isDefaultGateway": true,
"mtu": 1400
}
}

[root@linux-node3 ~]# mkdir -p /etc/cni/net.d
[root@linux-node3~]# vim /etc/cni/net.d/10-default.conf
{
"name": "flannel",
"type": "flannel",
"delegate": {
"bridge": "docker0",
"isDefaultGateway": true,
"mtu": 1400
}
}

2.創建kubelet目錄（只在node2 node3上執行即可）

[root@linux-node2 ~]# mkdir /var/lib/kubelet

3.創建kubelet服務配置（只在node2 node3上執行即可）

[root@k8s-node2 ~]# vim /usr/lib/systemd/system/kubelet.service
[Unit]
Description=Kubernetes Kubelet
Documentation=https://github.com/GoogleCloudPlatform/kubernetes
After=docker.service
Requires=docker.service

[Service]
WorkingDirectory=/var/lib/kubelet
ExecStart=/opt/kubernetes/bin/kubelet \
--address=192.168.56.12 \
--hostname-override=192.168.56.12 \
--pod-infra-container-image=mirrorgooglecontainers/pause-amd64:3.0 \
--experimental-bootstrap-kubeconfig=/opt/kubernetes/cfg/bootstrap.kubeconfig \
--kubeconfig=/opt/kubernetes/cfg/kubelet.kubeconfig \
--cert-dir=/opt/kubernetes/ssl \
--network-plugin=cni \
--cni-conf-dir=/etc/cni/net.d \
--cni-bin-dir=/opt/kubernetes/bin/cni \
--cluster-dns=10.1.0.2 \
--cluster-domain=cluster.local. \
--hairpin-mode hairpin-veth \
--allow-privileged=true \
--fail-swap-on=false \
--logtostderr=true \
--v=2 \
--logtostderr=false \
--log-dir=/opt/kubernetes/log
Restart=on-failure
RestartSec=5

4.啟動Kubelet（只在node2 node3上執行即可）

[root@linux-node2 ~]# systemctl daemon-reload
[root@linux-node2 ~]# systemctl enable kubelet
[root@linux-node2 ~]# systemctl start kubelet

5.查看服務狀態（只在node2 node3上執行即可）

[root@linux-node2 kubernetes]# systemctl status kubelet

6.查看csr請求 （註意是在linux-node1上執行。）

[root@linux-node1 ~]# kubectl get csr
NAME AGE REQUESTOR CONDITION
node-csr-0_w5F1FM_la_SeGiu3Y5xELRpYUjjT2icIFk9gO9KOU 1m kubelet-bootstrap Pending

7.批準kubelet 的 TLS 證書請求（在linux-node1上執行。）

[root@linux-node1 ~]# kubectl get csr|grep 'Pending' | awk 'NR>0{print $1}'| xargs kubectl certificate approve

8.執行完畢後，查看節點狀態已經是Ready的狀態了:命令如下：

[root@linux-node1 ssl]# kubectl get node

部署Kubernetes Proxy

1.配置kube-proxy使用LVS

[root@linux-node2 ~]# yum install -y ipvsadm ipset conntrack

[root@linux-node3~]# yum install -y ipvsadm ipset conntrack

2.創建 kube-proxy 證書請求

[root@linux-node1 ~]# cd /usr/local/src/ssl/
[root@linux-node1 ~]# vim kube-proxy-csr.json
{
"CN": "system:kube-proxy",
"hosts": [],
"key": {
"algo": "rsa",
"size": 2048
},
"names": [
{
"C": "CN",
"ST": "BeiJing",
"L": "BeiJing",
"O": "k8s",
"OU": "System"
}
]
}

3.生成證書

[root@linux-node1~]# cfssl gencert -ca=/opt/kubernetes/ssl/ca.pem \
-ca-key=/opt/kubernetes/ssl/ca-key.pem \
-config=/opt/kubernetes/ssl/ca-config.json \
-profile=kubernetes kube-proxy-csr.json | cfssljson -bare kube-proxy

4.分發證書到所有Node節點

[root@linux-node1 ssl]# cp kube-proxy*.pem /opt/kubernetes/ssl/
[root@linux-node1 ssl]# scp kube-proxy*.pem 192.168.56.12:/opt/kubernetes/ssl/
[root@linux-node1 ssl]# scp kube-proxy*.pem 192.168.56.13 :/opt/kubernetes/ssl/

5.創建kube-proxy配置文件

[root@linux-node1 ~]# kubectl config set-cluster kubernetes \
--certificate-authority=/opt/kubernetes/ssl/ca.pem \
--embed-certs=true \
--server=https://192.168.56.11:6443 \
--kubeconfig=kube-proxy.kubeconfig
Cluster "kubernetes" set.

[root@linux-node1 ~]# kubectl config set-credentials kube-proxy \
--client-certificate=/opt/kubernetes/ssl/kube-proxy.pem \
--client-key=/opt/kubernetes/ssl/kube-proxy-key.pem \
--embed-certs=true \
--kubeconfig=kube-proxy.kubeconfig
User "kube-proxy" set.

[root@linux-node1 ~]# kubectl config set-context default \
--cluster=kubernetes \
--user=kube-proxy \
--kubeconfig=kube-proxy.kubeconfig
Context "default" created.

[root@linux-node1 ~]# kubectl config use-context default --kubeconfig=kube-proxy.kubeconfig
Switched to context "default".

6.分發kubeconfig配置文件

[root@linux-node1 ssl]# cp kube-proxy.kubeconfig /opt/kubernetes/cfg/
[root@linux-node1 ~]# scp kube-proxy.kubeconfig 192.168.56.12:/opt/kubernetes/cfg/
[root@linux-node1 ~]# scp kube-proxy.kubeconfig 192.168.56.13:/opt/kubernetes/cfg/

7.創建kube-proxy服務配置（只在node2，node3上創建）

[root@linux-node2 bin]# mkdir /var/lib/kube-proxy

[root@k8s-node2 ~]# vim /usr/lib/systemd/system/kube-proxy.service
[Unit]
Description=Kubernetes Kube-Proxy Server
Documentation=https://github.com/GoogleCloudPlatform/kubernetes
After=network.target

[Service]
WorkingDirectory=/var/lib/kube-proxy
ExecStart=/opt/kubernetes/bin/kube-proxy \
--bind-address=192.168.56.12 \
--hostname-override=192.168.56.12 \
--kubeconfig=/opt/kubernetes/cfg/kube-proxy.kubeconfig \
--masquerade-all \
--feature-gates=SupportIPVSProxyMode=true \
--proxy-mode=ipvs \
--ipvs-min-sync-period=5s \
--ipvs-sync-period=5s \
--ipvs-scheduler=rr \
--logtostderr=true \
--v=2 \
--logtostderr=false \
--log-dir=/opt/kubernetes/log

Restart=on-failure
RestartSec=5
LimitNOFILE=65536

[Install]
WantedBy=multi-user.target

8.啟動Kubernetes Proxy（只在node2，node3上執行）
[root@linux-node2 ~]# systemctl daemon-reload
[root@linux-node2 ~]# systemctl enable kube-proxy
[root@linux-node2 ~]# systemctl start kube-proxy

9.查看服務狀態 查看kube-proxy服務狀態（只在node2，node3上執行）

[root@linux-node2 scripts]# systemctl status kube-proxy

10.檢查LVS狀態（只在node2，node3上執行）
[root@linux-node2 ~]# ipvsadm -L -n
IP Virtual Server version 1.2.1 (size=4096)
Prot LocalAddress:Port Scheduler Flags
-> RemoteAddress:Port Forward Weight ActiveConn InActConn
TCP 10.1.0.1:443 rr persistent 10800
-> 192.168.56.11:6443 Masq 1 0 0

11.使用下面的命令可以檢查node狀態：

[root@linux-node1 ssl]# kubectl get node
NAME STATUS ROLES AGE VERSION
192.168.56.12 Ready <none> 22m v1.10.1
192.168.56.13 Ready <none> 3m v1.10.1

5.K8S部署-------- 部署Node節點