没有特别其他说明一切按照文档执行
1.二进制包准备 将软件包从linux-node1复制到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.创建角色绑定
[root@linux-node1 ~]# kubectl create clusterrolebinding kubelet-bootstrap --clusterrole=system:node-bootstrapper --user=kubelet-bootstrap
clusterrolebinding "kubelet-bootstrap" created
3.创建 kubelet bootstrapping kubeconfig 文件 设置集群参数
[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=bootstrap.kubeconfig
Cluster "kubernetes" set.
4.设置客户端认证参数
[root@linux-node1 ~]# kubectl config set-credentials kubelet-bootstrap \
--token=ad6d5bb607a186796d8861557df0d17f \
--kubeconfig=bootstrap.kubeconfig
User "kubelet-bootstrap" set.
红色部分是上节第三部生成的字符串
5.设置上下文参数
[root@linux-node1 ~]# kubectl config set-context default \
--cluster=kubernetes \
--user=kubelet-bootstrap \
--kubeconfig=bootstrap.kubeconfig
Context "default" created.
6.选择默认上下文
[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.设置CNI支持（只在node2 node3上执行即可）
[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.创建kubelet目录（只在node2 node3上执行即可）
[root@linux-node2 ~]# mkdir /var/lib/kubelet
3.创建kubelet服务配置（只在node2 node3上执行即可）
[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.启动Kubelet（只在node2 node3上执行即可）
[root@linux-node2 ~]# systemctl daemon-reload
[root@linux-node2 ~]# systemctl enable kubelet
[root@linux-node2 ~]# systemctl start kubelet
5.查看服务状态（只在node2 node3上执行即可）
[root@linux-node2 kubernetes]# systemctl status kubelet
6.查看csr请求 （注意是在linux-node1上执行。）
[root@linux-node1 ~]# kubectl get csr
NAME AGE REQUESTOR CONDITION
node-csr-0_w5F1FM_la_SeGiu3Y5xELRpYUjjT2icIFk9gO9KOU 1m kubelet-bootstrap Pending
7.批准kubelet 的 TLS 证书请求（在linux-node1上执行。）
[root@linux-node1 ~]# kubectl get csr|grep 'Pending' | awk 'NR>0{print $1}'| xargs kubectl certificate approve
8.执行完毕后，查看节点状态已经是Ready的状态了: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.创建 kube-proxy 证书请求
[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.生成证书
[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.分发证书到所有Node节点
[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.创建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.分发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.创建kube-proxy服务配置（只在node2，node3上创建）
[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.启动Kubernetes Proxy（只在node2，node3上执行）
[root@linux-node2 ~]# systemctl daemon-reload
[root@linux-node2 ~]# systemctl enable kube-proxy
[root@linux-node2 ~]# systemctl start kube-proxy
9.查看服务状态 查看kube-proxy服务状态（只在node2，node3上执行）
[root@linux-node2 scripts]# systemctl status kube-proxy
10.检查LVS状态（只在node2，node3上执行）
[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检查node状态：
[root@linux-node1 ssl]# kubectl get node
NAME STATUS ROLES AGE VERSION
192.168.56.12 Ready
192.168.56.13 Ready