Centos7部署kubelet(六)

1、二进制包准备将软件包从linux-node1复制linux-node2、linux-node3中去

[root@linux-node1 ssl]# 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 192.168.43.22:/opt/kubernetes/bin/

[root@linux-node1 bin]# scp kubelet kube-proxy 192.168.43.23:/opt/kubernetes/bin/

2、创建角色绑定

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

clusterrolebinding.rbac.authorization.k8s.io "kubelet-bootstrap" created

3、创建kubelet bootstrapping kubeconfig 文件设置集群参数

[root@linux-node1 bin]# cd /usr/local/src/ssl/

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

> --certificate-authority=/opt/kubernetes/ssl/ca.pem \

> --embed-certs=true \

> --server=https://192.168.43.21:6443 \

> --kubeconfig=bootstrap.kubeconfig

Cluster "kubernetes" set.

4、设置客户端认证参数

[root@linux-node1 ssl]# kubectl config set-credentials kubelet-bootstrap \

> --token=c5b00c8b2a61246c61202a53cffed505 \

> --kubeconfig=bootstrap.kubeconfig

User "kubelet-bootstrap" set.

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 ssl]# cp bootstrap.kubeconfig /opt/kubernetes/cfg

[root@linux-node1 ssl]# scp bootstrap.kubeconfig 192.168.43.22:/opt/kubernetes/cfg

[root@linux-node1 ssl]# scp bootstrap.kubeconfig 192.168.43.23:/opt/kubernetes/cfg

7、部署kubelet 1.设置CNI支持（其实只在node2、node3上操作即可）

[root@linux-node1 ~]# mkdir -p /etc/cni/net.d

[root@linux-node2 ~]# mkdir -p /etc/cni/net.d

[root@linux-node3 ~]# mkdir -p /etc/cni/net.d

[root@linux-node1 ~]# vim /etc/cni/net.d/10-default.conf

{

"name": "flannel",

"type": "flannel",

"delegate": {

"bridge": "docker0",

"isDefaultGateway": true,

"mtu": 1400

}

}

[root@linux-node1 ~]# scp /etc/cni/net.d/10-default.conf 192.168.43.22:/etc/cni/net.d/10-default.conf

[root@linux-node1 ~]# scp /etc/cni/net.d/10-default.conf 192.168.43.23:/etc/cni/net.d/10-default.conf

8、创建kubelet目录

[root@linux-node1 ssl]# mkdir /var/lib/kubelet

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

[root@linux-node3 ~]# mkdir /var/lib/kubelet

9、创建kubelet服务配置

[root@linux-node1 ssl]# 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=192.168.43.21 \

--hostname-override=192.168.43.21 \

--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

[root@linux-node1 ssl]# scp /usr/lib/systemd/system/kubelet.service 192.168.43.22:/usr/lib/systemd/system/kubelet.service

[root@linux-node1 ssl]# scp /usr/lib/systemd/system/kubelet.service 192.168.43.23:/usr/lib/systemd/system/kubelet.service

##修改node2、node3配置文件的监听地址为本身##

修改node2

[root@linux-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=192.168.43.22 \

--hostname-override=192.168.43.22 \

--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

 

修改node3

[root@linux-node3 ~]# 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=192.168.43.23 \

--hostname-override=192.168.43.23 \

--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

10、启动kubelet

[root@linux-node1 ssl]# systemctl daemon-reload

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

[root@linux-node3 ~]# systemctl daemon-reload

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

[root@linux-node3 ~]# systemctl enable kubelet

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

[root@linux-node3 ~]# systemctl start kubelet

11、查看csr请求，检测有无报错

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

NAME AGE REQUESTOR CONDITION

node-csr-AXp3jLRnmxszpoesl-G5Saz8SyJSm3jlxSfmAXxQsaA 32s kubelet-bootstrap Pending

node-csr-cRuooeWpWuHvOdKXCkB9o3JBcD_7KOiDl4heU-0FfYs 30s kubelet-bootstrap Pending

12、批准kubelet的TLS证书请求

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

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