接着第二篇，master上面部署完了三个角色，接着部署node节点
主要部署：kubelet kube-proxy
一 环境准备（以下都是在master上操作）
1建立目录,拷贝两个组件
mkdir /home/yx/kubernetes/{bin,cfg,ssl} -p
# 两个node节点都拷贝
scp -r /home/yx/src/kubernetes/server/bin/kubelet [email protected]:/home/yx/kubernetes/bin
scp -r /home/yx/src/kubernetes/server/bin/kube-proxy [email protected]:/home/yx/kubernetes/bin
2将kubelet-bootstrap用户绑定到系统集群角色
kubectl create clusterrolebinding kubelet-bootstrap --clusterrole=system:node-bootstrapper --user=kubelet-bootstrap3 生成bootstrap.kubeconfig和kube-proxy.kubeconfig两个文件,利用kubeconfig.sh脚本，内如如下：
执行 bash kubeconfig.sh 192.168.18.104 其中第一个参数是master节点ip，第二个是ssl证书的路径，最终会生成上面两个文件，然后把这两个文件拷贝到两个node节点上面
# 创建 TLS Bootstrapping Token
#BOOTSTRAP_TOKEN=$(head -c 16 /dev/urandom | od -An -t x | tr -d ‘ ‘)
BOOTSTRAP_TOKEN=71b6d986c47254bb0e63b2a20cfaf560
cat > token.csv <<EOF
${BOOTSTRAP_TOKEN},kubelet-bootstrap,10001,"system:kubelet-bootstrap"
EOF
#----------------------
APISERVER=$1
SSL_DIR=$2
# 创建kubelet bootstrapping kubeconfig
export KUBE_APISERVER="https://$APISERVER:6443"
# 设置集群参数
kubectl config set-cluster kubernetes --certificate-authority=$SSL_DIR/ca.pem --embed-certs=true --server=${KUBE_APISERVER} --kubeconfig=bootstrap.kubeconfig
# 设置客户端认证参数
kubectl config set-credentials kubelet-bootstrap --token=${BOOTSTRAP_TOKEN} --kubeconfig=bootstrap.kubeconfig
# 设置上下文参数
kubectl config set-context default --cluster=kubernetes --user=kubelet-bootstrap --kubeconfig=bootstrap.kubeconfig
# 设置默认上下文
kubectl config use-context default --kubeconfig=bootstrap.kubeconfig
#----------------------
# 创建kube-proxy kubeconfig文件
kubectl config set-cluster kubernetes --certificate-authority=$SSL_DIR/ca.pem --embed-certs=true --server=${KUBE_APISERVER} --kubeconfig=kube-proxy.kubeconfig
kubectl config set-credentials kube-proxy --client-certificate=$SSL_DIR/kube-proxy.pem --client-key=$SSL_DIR/kube-proxy-key.pem --embed-certs=true --kubeconfig=kube-proxy.kubeconfig
kubectl config set-context default --cluster=kubernetes --user=kube-proxy --kubeconfig=kube-proxy.kubeconfig
kubectl config use-context default --kubeconfig=kube-proxy.kubeconfig4拷贝生成的bootstrap.kubeconfig 和 kube-proxy.kubeconfig
scp bootstrap.kubeconfig kube-proxy.kubeconfig [email protected]:/home/yx/kubernetes/cfg
scp bootstrap.kubeconfig kube-proxy.kubeconfig [email protected]:/home/yx/kubernetes/cfg二 node节点安装
1 部署kubelet组件
创建kubelet配置文件：
cat /home/yx/kubernetes/cfg/kubelet
KUBELET_OPTS="--logtostderr=true --v=4 --hostname-override=192.168.18.105 --kubeconfig=/home/yx/kubernetes/cfg/kubelet.kubeconfig --experimental-bootstrap-kubeconfig=/home/yx/kubernetes/cfg/bootstrap.kubeconfig --config=/home/yx/kubernetes/cfg/kubelet.config --cert-dir=/home/yx/kubernetes/ssl --pod-infra-container-image=registry.cn-hangzhou.aliyuncs.com/google-containers/pause-amd64:3.0"
参数说明：
--hostname-override 在集群中显示的主机名
--kubeconfig 指定kubeconfig文件位置，会自动生成
--bootstrap-kubeconfig 指定刚才生成的bootstrap.kubeconfig文件
--cert-dir 颁发证书存放位置
--pod-infra-container-image 管理Pod网络的镜像
创建kubelet.config
cat /home/yx/kubernetes/cfg/kubelet.config
kind: KubeletConfiguration
apiVersion: kubelet.config.k8s.io/v1beta1
address: 192.168.18.105
port: 10250
cgroupDriver: cgroupfs
clusterDNS:
- 10.0.0.2
clusterDomain: cluster.local.
failSwapOn: false启动脚本
cat /usr/lib/systemd/system/kubelet.service
[Unit]
Description=Kubernetes Kubelet
After=docker.service
Requires=docker.service
[Service]
EnvironmentFile=/home/yx/kubernetes/cfg/kubelet
ExecStart=/home/yx/kubernetes/bin/kubelet $KUBELET_OPTS
Restart=on-failure
KillMode=process
[Install]
WantedBy=multi-user.target启动
systemctl daemon-reload
systemctl enable kubelet
systemctl restart kubelet
查看是否启动
2 部署kube-proxy组件
创建kube-proxy配置文件：
cat /home/yx/kubernetes/cfg/kube-proxy
KUBE_PROXY_OPTS="--logtostderr=true --v=4 --hostname-override=192.168.18.105 --cluster-cidr=10.0.0.0/24 --proxy-mode=ipvs --kubeconfig=/home/yx/kubernetes/cfg/kube-proxy.kubeconfig"
启动脚本
[[email protected] cfg]$ cat /usr/lib/systemd/system/kube-proxy.service
[Unit]
Description=Kubernetes Proxy
After=network.target
[Service]
EnvironmentFile=-/home/yx/kubernetes/cfg/kube-proxy
ExecStart=/home/yx/kubernetes/bin/kube-proxy $KUBE_PROXY_OPTS
Restart=on-failure
[Install]
WantedBy=multi-user.targe
启动
systemctl daemon-reload
systemctl enable kube-proxy
systemctl restart kube-proxy
验证
同样的，在另一个node节点上也执行上面的，注意ip要改一下即可
三 在Master审批Node加入集群：
查看
[[email protected] cfg]$ kubectl get csr
NAME AGE REQUESTOR CONDITION
node-csr-jn-F4xSn1LAwJhom9l7hlW0XuhDQzo-RQrnkz1j4q6Y 16m kubelet-bootstrap Pending
node-csr-kB2CFmTqkCA2Ix5qYGSXoAP3-ctes-cHcjs7D84Wb38 5h55m kubelet-bootstrap Approved,Issued
node-csr-wWa0cKQ6Ap9Bcqap3m9d9ZBqBclwkLB84W8bpB3g_m0 22s kubelet-bootstrap Pending
允许加入
kubectl certificate approve node-csr-wWa0cKQ6Ap9Bcqap3m9d9ZBqBclwkLB84W8bpB3g_m0
certificatesigningrequest.certificates.k8s.io/node-csr-wWa0cKQ6Ap9Bcqap3m9d9ZBqBclwkLB84W8bpB3g_m0 approved
# 允许完成之后，状态会发生改变由Pending变成Approved,Issued四 查看集群状态（master上）
[[email protected] cfg]$ kubectl get node
NAME STATUS ROLES AGE VERSION
192.168.18.104 Ready <none> 41s v1.12.1
192.168.18.105 Ready <none> 52s v1.12.1
[[email protected] cfg]$ kubectl get cs
NAME STATUS MESSAGE ERROR
scheduler Healthy ok
controller-manager Healthy ok
etcd-1 Healthy {"health": "true"}
etcd-2 Healthy {"health": "true"}
etcd-0 Healthy {"health": "true"} 至此整个k8s二进制安装全部完成，接下来该进行实际操作了
原文地址：https://blog.51cto.com/825536458/2422563
时间： 2024-08-02 04:01:27