云原生边缘计算KubeEdge安装配置

1. K8S集群部署，可以参考如下博客

2.安装kubEedge

2.1 编辑kube-proxy使用ipvs代理

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kubectl edit configmaps kube-proxy -n kube-system #修改kube-proxy

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#大约在40多行
     37     ipvs:
     38       excludeCIDRs: null
     39       minSyncPeriod: 0s
     40       scheduler: ""
     41       strictARP: true  #这里由原来的false修改为true
     42       syncPeriod: 0s
     43       tcpFinTimeout: 0s
     44       tcpTimeout: 0s
     45       udpTimeout: 0s
     46     kind: KubeProxyConfiguration
     47     metricsBindAddress: ""
     48     mode: "ipvs"  #这里原来是空的修改为ipvs
     49     nodePortAddresses: null
     50     oomScoreAdj: null
     51     portRange: ""
     52     showHiddenMetricsForVersion: ""
     53     winkernel:
     54       enableDSR: false
     55       forwardHealthCheckVip: false
     56       networkName: ""
     57       rootHnsEndpointName: ""
     58       sourceVip: ""

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kubectl rollout restart daemonset kube-proxy -n kube-system
kubectl get pods -n kube-system

2.2 基础服务提供，负载均衡器metallb

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#无网络情况下，先上传kubeedge.tar 和 metallb-native.yaml文件
docker load -i kubeedge.tar  #导入镜像

#有网络可以直接拉去镜像
docker pull quay.io/metallb/controller:v0.13.5
docker pull quay.io/metallb/speaker:v0.13.5
wget https://raw.githubusercontent.com/metallb/metallb/v0.13.5/config/manifests/metallb-native.yaml

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kubectl apply -f metallb-native.yaml
kubectl get pods -n metallb-system

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[root@k8s-master01 ~]# kubectl get pods -n metallb-system
NAME                         READY   STATUS    RESTARTS   AGE
controller-8d9cf599f-m4x27   1/1     Running   0          23s
speaker-zm7w4                1/1     Running   0          23s
speaker-zww5l                1/1     Running   0          23s
[root@k8s-master01 ~]#

#具体参考官网地址：https://metallb.universe.tf/configuration/#layer-2-configuration

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#创建IP地址资源池，原则是跟主机在同一个网段，没有使用的地址，根据自己项目的规模我合理预留了21个IP
cat > first-ippool.yaml << EOF
apiVersion: metallb.io/v1beta1
kind: IPAddressPool
metadata:
  name: first-pool
  namespace: metallb-system
spec:
  addresses:
  - 192.168.186.200-192.168.186.220
EOF

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kubectl apply -f first-ippool.yaml
kubectl get ipaddresspools -n metallb-system

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[root@k8s-master01 ~]# kubectl get ipaddresspools -n metallb-system
NAME         AGE
first-pool   2m1s
[root@k8s-master01 ~]#

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#开启二层转发，实现k8s集群节点外访问
cat > l2forward.yaml << EOF
apiVersion: metallb.io/v1beta1
kind: L2Advertisement
metadata:
  name: example
  namespace: metallb-system
EOF

kubectl apply -f l2forward.yaml

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#二层转发案例测试
cat > nginx.yaml << EOF
apiVersion: apps/v1
kind: Deployment
metadata:
  name: nginx
spec:
  replicas: 1
  selector:
    matchLabels:
      app: nginx
  template:
    metadata:
      labels:
        app: nginx
    spec:
      containers:
      - image: nginx
        name: nginx
        imagePullPolicy: IfNotPresent
---
apiVersion: v1
kind: Service
metadata:
  name: nginx-svc
spec:
  type: LoadBalancer
  ports:
  - port: 80
    targetPort: 80
  selector:
    app: nginx
EOF

kubectl apply -f nginx.yaml

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[root@k8s-master01 ~]# kubectl get pods,svc #svc的ip从地址池中分配的
NAME                         READY   STATUS    RESTARTS   AGE
pod/nginx-5f5c64f949-bhpvf   1/1     Running   0          50s

NAME                 TYPE           CLUSTER-IP     EXTERNAL-IP       PORT(S)        AGE
service/kubernetes   ClusterIP      10.96.0.1      <none>            443/TCP        5h43m
service/nginx-svc    LoadBalancer   10.99.41.146   192.168.186.200   80:30293/TCP   50s
[root@k8s-master01 ~]#

测试通过

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kubectl delete -f nginx.yaml  #删除无用的pod和svc

3. 对于kubeEdge概述

KubeEdge由云和边缘组成。它建立在Kubernetes之上，为联网应用部署和云与边缘之间的元数据同步提供核心基础设施支持。所以如果我们想要设置KubeEdge，我们需要设置Kubernetes集群(可以使用现有的集群)，云端和边缘端在cloud side, 我们需要安装

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Docker
Kubernetes cluster
cloudcore

在 edge side, 我们需要安装

Docker

MQTT （配置可以选用，不是一定需要）

edgecore

3.部署kubeedge cloudcore

3.1 获取keadm工具

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#wget https://github.com/kubeedge/kubeedge/releases/download/v1.10.1/keadm-v1.10.1-linux-amd64.tar.gz
wget https://github.com/kubeedge/kubeedge/releases/download/v1.14.2/keadm-v1.14.2-linux-amd64.tar.gz

tar -zxvf keadm-v1.14.2-linux-amd64.tar.gz
cp keadm-v1.14.2-linux-amd64/keadm/keadm  /usr/local/bin/
keadm version

3.2 部署cloudcore

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#在master上部署
#设置云端  使用keadm初始化，安装cloudcore
docker pull kubeedge/cloudcore:v1.14.2  
docker pull  kubeedge/iptables-manager:v1.14.2


keadm init --advertise-address=192.168.110.100 --kubeedge-version=1.14.2   #这是master的ip

keadm init --advertise-address=192.168.186.200 --set iptablesManager.mode="external" --profile version=v1.14.2 #这里的IP是负载均衡器metallb分配的IP

#以上参数分别为master节点地址和要安装的KubeEdge版本。

#keadm reset  #安装错误可以重置
keadm gettoken  #获取token

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[root@master ~]# keadm init --advertise-address=192.168.186.200 --set iptablesManager.mode="external" --profile version=v1.14.2  # 这里的IP是负载均衡器metallb分配的IP
Kubernetes version verification passed, KubeEdge installation will start...
CLOUDCORE started
=========CHART DETAILS=======
NAME: cloudcore
LAST DEPLOYED: Thu Oct  5 14:22:00 2023
NAMESPACE: kubeedge
STATUS: deployed
REVISION: 1
[root@master ~]#