k8s部署-6.node节点组件

一、传输文件

把主服务器生成的kubeconfig文件复制到从机

scp /opt/kubernetes/ssl/*kubeconfig [email protected]:/opt/kubernetes/cfg/
scp /opt/kubernetes/ssl/*kubeconfig [email protected]:/opt/kubernetes/cfg/

把主服务器上kubelet,kube-proxy传到从机上

scp /tools/kubernetes/kubernetes/server/bin/kubelet [email protected]:/opt/kubernetes/bin/
scp /tools/kubernetes/kubernetes/server/bin/kubelet [email protected]:/opt/kubernetes/bin/

二、master创建用户权限

kubectl create clusterrolebinding kubelet-bootstrap --clusterrole=system:node-bootstrapper --user=kubelet-bootstrap

三、kubelet

新增kubelet.sh脚本

#!/bin/bash

NODE_ADDRESS=${1:-"192.168.10.61"}
DNS_SERVER_IP=${2:-"10.10.10.2"}

cat <<EOF >/opt/kubernetes/cfg/kubelet

KUBELET_OPTS="--logtostderr=true \\
--v=4 \\
--address=${NODE_ADDRESS} \\
--hostname-override=${NODE_ADDRESS} \\
--kubeconfig=/opt/kubernetes/cfg/kubelet.kubeconfig \\
--experimental-bootstrap-kubeconfig=/opt/kubernetes/cfg/bootstrap.kubeconfig \\
--cert-dir=/opt/kubernetes/ssl \\
--allow-privileged=true \\
--cluster-dns=${DNS_SERVER_IP} \\
--cluster-domain=cluster.local \\
--fail-swap-on=false \\
--pod-infra-container-image=registry.cn-hangzhou.aliyuncs.com/google-containers/pause-amd64:3.0"

EOF

cat <<EOF >/usr/lib/systemd/system/kubelet.service
[Unit]
Description=Kubernetes Kubelet
After=docker.service
Requires=docker.service

[Service]
EnvironmentFile=-/opt/kubernetes/cfg/kubelet
ExecStart=/opt/kubernetes/bin/kubelet \$KUBELET_OPTS
Restart=on-failure
KillMode=process

[Install]
WantedBy=multi-user.target
EOF

systemctl daemon-reload
systemctl enable kubelet
systemctl restart kubelet

执行脚本 (当前节点ip，dns地址)

./kubelet.sh 192.168.112.137 10.10.10.2

四、kube-proxy

新增kube-proxy.sh脚本

#!/bin/bash

NODE_ADDRESS=${1:-"192.168.10.61"}

cat <<EOF >/opt/kubernetes/cfg/kube-proxy

KUBE_PROXY_OPTS="--logtostderr=true \
--v=4 \
--hostname-override=${NODE_ADDRESS} \
--kubeconfig=/opt/kubernetes/cfg/kube-proxy.kubeconfig"

EOF

cat <<EOF >/usr/lib/systemd/system/kube-proxy.service
[Unit]
Description=Kubernetes Proxy
After=network.target

[Service]
EnvironmentFile=-/opt/kubernetes/cfg/kube-proxy
ExecStart=/opt/kubernetes/bin/kube-proxy \$KUBE_PROXY_OPTS
Restart=on-failure

[Install]
WantedBy=multi-user.target
EOF

systemctl daemon-reload
systemctl enable kube-proxy
systemctl restart kube-proxy

执行脚本 (当前节点ip)

./kube-proxy.sh 192.168.112.137

五、master服务器允许访问

master服务器上

查看node name

kubectl get csr

允许访问

kubectl certificate approve node-csr-qHu1Axkjwf3dNuWexDWwPWAPIRgBLEfj-1-B9VevUl0

查看状态

[[email protected] ~]# kubectl get node
NAME              STATUS   ROLES    AGE     VERSION
192.168.112.137   Ready    <none>   2d16h   v1.18.15
192.168.112.138   Ready    <none>   2d16h   v1.18.15