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目录
7、安装flannel
8、节点管理命令
三、安装Dashboard UI
1、部署Dashboard
2、开放端口设置
3、权限配置 7、安装flannel
Master 节点NotReady 的原因就是因为没有使用任何的网络插件#xff0c;此时Node 和Master的连接还不正常。目前最流行的Kuber…继续上篇内容
目录
7、安装flannel
8、节点管理命令
三、安装Dashboard UI
1、部署Dashboard
2、开放端口设置
3、权限配置 7、安装flannel
Master 节点NotReady 的原因就是因为没有使用任何的网络插件此时Node 和Master的连接还不正常。目前最流行的Kubernetes 网络插件有Flannel、Calico、Canal、Weave 这里选择使用flannel。
[rootk8s-master ~]# docker load flannel_v0.12.0-amd64.tar
256a7af3acb1: Loading layer [] 5.844MB/5.844MB
d572e5d9d39b: Loading layer [] 10.37MB/10.37MB
57c10be5852f: Loading layer [] 2.249MB/2.249MB
7412f8eefb77: Loading layer [] 35.26MB/35.26MB
05116c9ff7bf: Loading layer [] 5.12kB/5.12kB
Loaded image: quay.io/coreos/flannel:v0.12.0-amd64所有主机
master上传kube-flannel.yml所有主机上传flannel_v0.12.0-amd64.tar
[rootk8s-master ~]# ll
总用量 52496
-rw-------. 1 root root 1257 7月 18 16:47 anaconda-ks.cfg
-rw-r--r--. 1 root root 53746688 12月 16 2020 flannel_v0.12.0-amd64.tar
-rw-r--r--. 1 root root 895 8月 10 14:18 init-config.yaml
[rootk8s-master ~]# docker load flannel_v0.12.0-amd64.tar
256a7af3acb1: Loading layer [] 5.844MB/5.844MB
d572e5d9d39b: Loading layer [] 10.37MB/10.37MB
57c10be5852f: Loading layer [] 2.249MB/2.249MB
7412f8eefb77: Loading layer [] 35.26MB/35.26MB
05116c9ff7bf: Loading layer [] 5.12kB/5.12kB
Loaded image: quay.io/coreos/flannel:v0.12.0-amd64三台主机安装cni插件这些文件都可以从官网获取
[rootk8s-master ~]# ll
总用量 88512
-rw-------. 1 root root 1257 7月 18 16:47 anaconda-ks.cfg
-rw-r--r--. 1 root root 36878412 11月 10 2021 cni-plugins-linux-amd64-v0.8.6.tgz
[rootk8s-master ~]# tar xf cni-plugins-linux-amd64-v0.8.6.tgz
[rootk8s-master ~]# cp flannel /opt/cni/bin/
[rootk8s-master ~]# kubectl apply -f kube-flannel.yml
podsecuritypolicy.policy/psp.flannel.unprivileged created
Warning: rbac.authorization.k8s.io/v1beta1 ClusterRole is deprecated in v1.17, unavailable in v1.22; use rbac.authorization.k8s.io/v1 ClusterRole
clusterrole.rbac.authorization.k8s.io/flannel created
Warning: rbac.authorization.k8s.io/v1beta1 ClusterRoleBinding is deprecated in v1.17, unavailable in v1.22; use rbac.authorization.k8s.io/v1 ClusterRoleBinding
clusterrolebinding.rbac.authorization.k8s.io/flannel created
serviceaccount/flannel created
configmap/kube-flannel-cfg created
daemonset.apps/kube-flannel-ds-amd64 created
daemonset.apps/kube-flannel-ds-arm64 created
daemonset.apps/kube-flannel-ds-arm created
daemonset.apps/kube-flannel-ds-ppc64le created
daemonset.apps/kube-flannel-ds-s390x created
[rootk8s-master ~]# kubectl get nodes
NAME STATUS ROLES AGE VERSION
k8s-master Ready master 7m53s v1.19.0
k8s-node01 Ready none 6m12s v1.19.0
k8s-node02 Ready none 6m8s v1.19.0已经是ready状态了
第一个拉取镜像时间会比较长先做后面的不影响
[rootk8s-master ~]# kubectl get pods -n kube-system
NAME READY STATUS RESTARTS AGE
coredns-6d56c8448f-4rvnr 1/1 Running 0 10m
coredns-6d56c8448f-9mn9h 1/1 Running 0 10m
etcd-k8s-master 1/1 Running 0 10m
kube-apiserver-k8s-master 1/1 Running 0 10m
kube-controller-manager-k8s-master 1/1 Running 0 10m
kube-flannel-ds-amd64-2h859 1/1 Running 0 2m23s
kube-flannel-ds-amd64-6gqct 1/1 Running 0 2m23s
kube-flannel-ds-amd64-rvljf 1/1 Running 0 2m23s
kube-proxy-bxh2m 1/1 Running 0 8m28s
kube-proxy-s7jxv 1/1 Running 0 10m
kube-proxy-xdr5v 1/1 Running 0 8m30s
kube-scheduler-k8s-master 1/1 Running 0 10m8、节点管理命令
以下命令无需执行仅作为了解
重置master和node配置
[rootk8s-master ~]# kubeadm reset
删除node配置
[rootk8s-master ~]# kubectl delete node k8s-node01[rootk8s-node01 ~]# docker rm -f $(docker ps -aq)
[rootk8s-node01 ~]# systemctl stop kubelet
[rootk8s-node01 ~]# rm -rf /etc/kubernetes/*
[rootk8s-node01 ~]# rm -rf /var/lib/kubelet/*三、安装Dashboard UI
1、部署Dashboard
dashboard的github仓库地址https://github.com/kubernetes/dashboard
代码仓库当中有给出安装示例的相关部署文件我们可以直接获取之后直接部署即可
[rootk8s-master ~]# wget https://raw.githubusercontent.com/kubernetes/dashboard/master/aio/deploy/recommended.yaml
默认这个部署文件当中会单独创建一个名为kubernetes-dashboard的命名空间并将kubernetes-dashboard部署在该命名空间下。dashboard的镜像来自docker hub官方所以可不用修改镜像地址直接从官方获取即可。
2、开放端口设置
在默认情况下dashboard并不对外开放访问端口这里简化操作直接使用nodePort的方式将其端口暴露出来修改serivce部分的定义
[rootk8s-master ~]# vim recommended.yaml
30 ---31 32 kind: Service33 apiVersion: v134 metadata:35 labels:36 k8s-app: kubernetes-dashboard37 name: kubernetes-dashboard38 namespace: kubernetes-dashboard39 spec:40 type: NodePort41 ports:42 - port: 44343 targetPort: 844344 nodePort: 3244345 selector:46 k8s-app: kubernetes-dashboard47 48 ---192 image: kubernetesui/dashboard:v2.0.0
276 image: kubernetesui/metrics-scraper:v1.0.43、权限配置
配置一个超级管理员权限
[rootk8s-master ~]# kubectl apply -f recommended.yaml
namespace/kubernetes-dashboard created
serviceaccount/kubernetes-dashboard created
service/kubernetes-dashboard created
secret/kubernetes-dashboard-certs created
secret/kubernetes-dashboard-csrf created
secret/kubernetes-dashboard-key-holder created
configmap/kubernetes-dashboard-settings created
role.rbac.authorization.k8s.io/kubernetes-dashboard created
clusterrole.rbac.authorization.k8s.io/kubernetes-dashboard created
rolebinding.rbac.authorization.k8s.io/kubernetes-dashboard created
clusterrolebinding.rbac.authorization.k8s.io/kubernetes-dashboard created
deployment.apps/kubernetes-dashboard created
service/dashboard-metrics-scraper created
deployment.apps/dashboard-metrics-scraper created[rootk8s-master ~]# kubectl get pods -n kubernetes-dashboard
NAME READY STATUS RESTARTS AGE
dashboard-metrics-scraper-7b59f7d4df-rhl9r 1/1 Running 0 37s
kubernetes-dashboard-74d688b6bc-whtfr 1/1 Running 0 37s[rootk8s-master ~]# kubectl get pods -A -o wide
NAMESPACE NAME READY STATUS RESTARTS AGE IP NODE NOMINATED NODE READINESS GATES
kube-system coredns-6d56c8448f-fghft 1/1 Running 0 37m 10.244.2.2 k8s-node02 none none
kube-system coredns-6d56c8448f-t7jzh 1/1 Running 0 37m 10.244.1.2 k8s-node01 none none
kube-system etcd-k8s-master 1/1 Running 0 38m 192.168.147.138 k8s-master none none
kube-system kube-apiserver-k8s-master 1/1 Running 0 38m 192.168.147.138 k8s-master none none
kube-system kube-controller-manager-k8s-master 1/1 Running 0 38m 192.168.147.138 k8s-master none none
kube-system kube-flannel-ds-amd64-2vfvg 1/1 Running 0 30m 192.168.147.139 k8s-node01 none none
kube-system kube-flannel-ds-amd64-88g4t 1/1 Running 0 30m 192.168.147.140 k8s-node02 none none
kube-system kube-flannel-ds-amd64-fbn4v 1/1 Running 0 30m 192.168.147.138 k8s-master none none
kube-system kube-proxy-b26zq 1/1 Running 0 36m 192.168.147.139 k8s-node01 none none
kube-system kube-proxy-jzjkq 1/1 Running 0 36m 192.168.147.140 k8s-node02 none none
kube-system kube-proxy-r9ckd 1/1 Running 0 37m 192.168.147.138 k8s-master none none
kube-system kube-scheduler-k8s-master 1/1 Running 0 38m 192.168.147.138 k8s-master none none
kubernetes-dashboard dashboard-metrics-scraper-7b59f7d4df-rhl9r 1/1 Running 0 75s 10.244.2.3 k8s-node02 none none
kubernetes-dashboard kubernetes-dashboard-74d688b6bc-whtfr 1/1 Running 0 75s 10.244.1.3 k8s-node01 none none使用火狐浏览器登录IP选择高级接受风险 可以看到出现如上图画面需要我们输入一个kubeconfig文件或者一个token。事实上在安装dashboard时也为我们默认创建好了一个serviceaccount为kubernetes-dashboard并为其生成好了token我们可以通过如下指令获取该sa的token
[rootk8s-master ~]# kubectl describe secret -n kubernetes-dashboard $(kubectl get secret -n kubernetes-dashboard |grep kubernetes-dashboard-token | awk {print $1}) |grep token | awk {print $2}
kubernetes-dashboard-token-4fjtj
kubernetes.io/service-account-token
eyJhbGciOiJSUzI1NiIsImtpZCI6IklVQ1J5cklyajJrRkd5MWV0Z0ZrRDNLQVVoWXZXM3I5RGIxMFl1d1I1NzQifQ.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.ZyrPFXYexeoLbz48ZZ7WHglk00WhOpU-Dabb1ZR088uWA8Gx2rmi-SbuFQ7qyliXpCIDG6jkKMDZXYR0h7bWG8S0Fx2OhFZmqcwZ4GbenmQc7MYLD1w1HQHi8SRlDUzQ8pJ_hMHQOKQsUa8JMyXvzRXD998H2WFQHJe95ke8BeDJ5oCFwS-GIVwwA1h4DHUuhjSnvPBhi0wuiZhK1VDXqfx4cq6ko83tyRfjAAsCsF7bcnOX1n0y8tUrK0WDmJMnhBB5EGK8O8xNjqYqzWt_GyHY-AQG8tnnDtCBw-e5oMZvdfFyk5XSSqaUBYTm_ebMjKvvTMWmxPcqMuGrYUAglw
