Yyds dry inventory run kubeedge official example_ Counter demo counter

KubeEdge Counter Demo The counter is a pseudo device , Users do not need any additional physical devices to run this demo . The counter runs on the edge side , Users can from the cloud side in Web Control it in the process , Or from the cloud side Web Get counter value from , Schematic diagram is as follows :

Install first. kubeedge

Linux install kubeedge_ Successful test

kubeedge Edge node installation

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       # stay k8s-master  On the implementation , Look at the node 
       
       
[[email protected] crds]# kubectl get node
       
       
NAME         STATUS   ROLES        AGE     VERSION
       
       
k8s-master   Ready    master       3d23h   v1.19.3
       
       
k8s-node01   Ready    <none>       3d23h   v1.19.3
       
       
k8s-node02   Ready    <none>       3d22h   v1.19.3
       
       
ke-edge1     Ready    agent,edge   3d21h   v1.19.3-kubeedge-v1.8.0
       
       
ke-edge2     Ready    agent,edge   3d21h   v1.19.3-kubeedge-v1.8.0
      
      
      
      

       
       
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Make sure kubernetes apiserver The following configurations are enabled ：

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       --insecuret-port=8080
       
       
--insecure-bind-address=0.0.0.0
      
      
      
      

       
       
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Cloud operations stay k8s-master On the implementation

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       # Download sample code 
       
       
git clone https://github.com/kubeedge/examples.git $GOPATH/src/github.com/kubeedge/examples
       
       

       
       
# Use the official example warehouse github It will be slow , Here you can use my acceleration warehouse 
       
       
git clone https://gitee.com/iot-kubeedge/kubeedge-examples.git $GOPATH/src/github.com/kubeedge/examples
       
       

       
       
# establish  device model
       
       
cd $GOPATH/src/github.com/kubeedge/examples/kubeedge-counter-demo/crds
       
       

       
       
# establish model
       
       
kubectl create -f kubeedge-counter-model.yaml
       
       

       
       
# establish device
       
       
cd $GOPATH/src/github.com/kubeedge/examples/kubeedge-counter-demo/crds
       
       
# Modify... According to your actual situation matchExpressions：
       
       
vim kubeedge-counter-instance.yaml
       
       
# Major changes 
       
       
- key: 'kubernetes.io/hostname'
       
       
  values:
       
       
    - k8s-node-1 # Here is the node name 
       
       

       
       
# function yaml
       
       
kubectl create -f kubeedge-counter-instance.yaml
       
       

       
       
kubectl create -f kubeedge-web-controller-app.yaml
       
       

       
       
# Deploy cloud applications 
       
       
# Cloud Applications web-controller-app Used to control the end of the edge pi-counter-app application , The default listening port number of this program is 80, Change here to 8089
       
       
cd $GOPATH/src/github.com/kubeedge/examples/kubeedge-counter-demo/web-controller-app
       
       
vim main.go
       
       
beego.Run(":8089")
       
       

       
       
# Build a mirror image 
       
       
make all
       
       
make docker
       
       

       
       
# Deploy web-controller-app
       
       
cd $GOPATH/src/github.com/kubeedge/examples/kubeedge-counter-demo/crds
       
       
kubectl apply -f kubeedge-web-controller-app.yaml
       
       

       
       
# Deploy edge applications 
       
       
# On the edge pi-counter-app Applications are controlled by cloud applications , Mainly with mqtt Server communication , Simple counting function .
       
       
# Modify the code and build the image 
       
       
# Need to put Makefile Medium GOARCH It is amended as follows amd64 To run the container . The default is arm Architecturally 
       
       
cd $GOPATH/src/github.com/kubeedge/examples/kubeedge-counter-demo/counter-mapper
       
       
vim Makefile
       
       
GOARCH=amd64 go build -o pi-counter-app main.go
       
       

       
       
# Build a mirror image 
       
       
make all
       
       
make docker
       
       

       
       
# Deploy Pi Counter App
       
       
cd $GOPATH/src/github.com/kubeedge/examples/kubeedge-counter-demo/crds
       
       
kubectl apply -f kubeedge-pi-counter-app.yaml
       
       
# explain ： In order to prevent Pod Your deployment card is in `ContainerCreating`, This is directly through docker save、scp and docker load The command publishes the image to the edge 
       
       
# Because there is no such image on the edge , You can only get it by hand , Or upload it to the private image warehouse first ,  Configure private warehouse address at the edge , You can download directly from the private warehouse 
       
       
# Here, get the edge end manually 
       
       
docker save -o kubeedge-pi-counter.tar kubeedge/kubeedge-pi-counter:v1.0.0
       
       

       
       
# To the edge 
       
       
scp kubeedge-pi-counter.tar [email protected]:/data/
       
       
# Execute at the edge 
       
       
docker load -i kubeedge-pi-counter.tar
       
       

       
       
# Check the container startup log at the edge , Did you report a mistake 
       
       
docker logs -f counter-container-id
       
       

       
       
turn off counter.
       
       
turn on counter.
       
       
Counter value: 1
       
       
Counter value: 2
       
       
Counter value: 3
       
       
Counter value: 4
       
       
Counter value: 5
       
       
Counter value: 6
       
       
Counter value: 7
       
       
Counter value: 8
       
       
Counter value: 9
      
      
      
      

       
       
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