部署kubelet:
1.二进制包准备 将软件包可执行文件从k8s-master复制到node节点中去。
[[email protected] ~]# cd /usr/local/src/kubernetes/server/bin [[email protected]-master bin]# scp kubelet kube-proxy 10.200.3.106:/opt/kubernetes/bin/ [[email protected]-master bin]# scp kubelet kube-proxy 10.200.3.107:/opt/kubernetes/bin/
2.创建角色绑定
[[email protected] ~]# cd /usr/local/src/ssl/ [[email protected]-master ssl]# kubectl create clusterrolebinding kubelet-bootstrap --clusterrole=system:node-bootstrapper --user=kubelet-bootstrap clusterrolebinding "kubelet-bootstrap" createdclusterrolebinding.rbac.authorization.k8s.io "kubelet-bootstrap" created
3.创建 kubelet bootstrapping kubeconfig 文件 设置集群参数
[[email protected] ssl]# kubectl config set-cluster kubernetes --certificate-authority=/opt/kubernetes/ssl/ca.pem --embed-certs=true --server=https://10.200.3.105:6443 \ --kubeconfig=bootstrap.kubeconfig Cluster "kubernetes" set.
4.设置客户端认证参数
[[email protected] ssl]# kubectl config set-credentials kubelet-bootstrap --token=10a89e49bc403bce8fb134e5a2ae82f1 --kubeconfig=bootstrap.kubeconfig User "kubelet-bootstrap" set.
5.设置上下文参数
[[email protected] ssl]# kubectl config set-context default --cluster=kubernetes --user=kubelet-bootstrap --kubeconfig=bootstrap.kubeconfig Context "default" created.
6.选择默认上下文并向node节点分发在master端生成的bootstrap.kubeconfig文件.
[[email protected] ssl]# kubectl config use-context default --kubeconfig=bootstrap.kubeconfig Switched to context "default". [[email protected]-master ssl]# cp bootstrap.kubeconfig /opt/kubernetes/cfg [[email protected]-master ssl]# scp bootstrap.kubeconfig 10.200.3.106:/opt/kubernetes/cfg [[email protected]-master ssl]# scp bootstrap.kubeconfig 10.200.3.107:/opt/kubernetes/cfg
部署kubelet(node节点操作).
1.设置CNI支持.
[[email protected]1 ~]# mkdir -p /etc/cni/net.d
[[email protected]-node-1 ~]# cat >/etc/cni/net.d/10-default.conf >>EOF
me": "flannel",
"type": "flannel",
"delegate": {
"bridge": "docker0",
"isDefaultGateway": true,
"mtu": 1400
}
}
2.创建kubelet目录
[[email protected]1 ~]# mkdir /var/lib/kubelet
3.创建kubelet服务配置
[[email protected]1 ~]# cat > /usr/lib/systemd/system/kubelet.service >>EOF [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=10.200.3.106 --hostname-override=10.200.3.106 --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 EOF
4.启动Kubelet
[[email protected]1 ~]# systemctl daemon-reload [[email protected]-node-1 ~]# systemctl enable kubelet [[email protected]-node-1 ~]# systemctl start kubelet [[email protected]-node-1 ~]# systemctl status kubelet
5.查看csr请求 注意是在k8s-maste上执行
[[email protected] ssl]# kubectl get csr NAME AGE REQUESTOR CONDITION node-csr-exRV4L4JbdyoO62eNEcTnSK7ehYji_47xhkU7e5-L5c 43s kubelet-bootstrap Pending
6.批准kubelet 的 TLS 证书请求
[[email protected] ssl]# kubectl get csr|grep ‘Pending‘ | awk ‘NR>0{print $1}‘| xargs kubectl certificate approve
certificatesigningrequest.certificates.k8s.io "node-csr-exRV4L4JbdyoO62eNEcTnSK7ehYji_47xhkU7e5-L5c" approved
执行完毕后，查看节点状态如果是Ready的状态就说明一切正常.
[[email protected] ~]# kubectl get node NAME STATUS ROLES AGE VERSION 10.200.3.106 Ready <none> 1d v1.10.1
部署Kubernetes Proxy
1.配置kube-proxy使用LVS
# yum install -y ipvsadm ipset conntrack
2.创建 kube-proxy 证书请求
[[email protected] ~]# cd /usr/local/src/ssl/
[[email protected]-master ssl]# cat > kube-proxy-csr.json >>EOF
{
"CN": "system:kube-proxy",
"hosts": [],
"key": {
"algo": "rsa",
"size": 2048
},
"names": [
{
"C": "CN",
"ST": "BeiJing",
"L": "BeiJing",
"O": "k8s",
"OU": "System"
}
]
}
EOF
3.生成证书，并分发至node节点.
[[email protected] ssl]#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 [[email protected]-master ssl]# cp kube-proxy*.pem /opt/kubernetes/ssl/ [[email protected]-master ssl]# scp kube-proxy*.pem 10.200.3.106:/opt/kubernetes/ssl/ [[email protected]-master ssl]# scp kube-proxy*.pem 10.200.3.107:/opt/kubernetes/ssl/
4.创建kube-proxy配置文件
[[email protected] ssl]# kubectl config set-cluster kubernetes --certificate-authority=/opt/kubernetes/ssl/ca.pem --embed-certs=true --server=https://10.200.3.105:6443 \ --kubeconfig=kube-proxy.kubeconfig Cluster "kubernetes" set. [[email protected]-master ssl]#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. [[email protected]-master ssl]#kubectl config set-context default --cluster=kubernetes --user=kube-proxy --kubeconfig=kube-proxy.kubeconfig Context "default" created. [[email protected]-master ssl]# kubectl config use-context default --kubeconfig=kube-proxy.kubeconfig Switched to context "default".
6.分发kubeconfig配置文件到各节点.
[[email protected] ssl]# cp kube-proxy.kubeconfig /opt/kubernetes/cfg/ [[email protected]-master ssl]# scp kube-proxy.kubeconfig 10.200.3.106:/opt/kubernetes/cfg/ [[email protected]-master ssl]# scp kube-proxy.kubeconfig 10.200.3.107:/opt/kubernetes/cfg/
7.创建kube-proxy服务配置
[[email protected]1 ~]# mkdir /var/lib/kube-proxy [[email protected]-node-1 ~]# cat > /usr/lib/systemd/system/kube-proxy.service >>EOF [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=10.200.3.106 --hostname-override=10.200.3.106 --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 EOF
8.启动Kubernetes Proxy
[[email protected]1 ~]# systemctl daemon-reload [[email protected]-node-1 ~]# systemctl enable kube-proxy [[email protected]-node-1 ~]# systemctl start kube-proxy [[email protected]-node-1 ~]# systemctl status kube-proxy
9.检查LVS状态
[[email protected]1 ~]# 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 -> 10.200.3.105:6443 Masq 1 0 0 [[email protected]-node-1 ~]#
如果你在两台实验机器都安装了kubelet和proxy服务，使用下面的命令可以检查状态：
[[email protected] ~]# kubectl get nodes NAME STATUS ROLES AGE VERSION 10.200.3.106 Ready <none> 3h v1.10.1 10.200.3.107 Ready <none> 29m v1.10.1
原文地址：https://www.cnblogs.com/saneri/p/9123712.html
时间： 2024-10-31 22:38:07