This document demonstrates how to install Yurt-Device-Controller,Yurt-EdgeX-Manager, and manage edge leaf devices via cloud native style based on virtual devices.
For more details about these two components, please refer to Yurt-Device-Controller, Yurt-EdgeX-Manager
If you don't have an OpenYurt on hand, you can use yurtctl to create one or convert from an exist Kubernetes cluster.
Environment
-
OpenYurt v0.5.0+
-
You should first install Yurt-app-manager.
-
Deploy CoreDNS for every edge node
-
Set ServiceTopology to
kubernetes.io/hostnamefor CoreDNS service. For details, please refer to ServiceTopology
1. install yurt-edgex-manager and create an EdgeX insatnce
install yurt-edgex-manager
$ kubectl apply -f https://github.com/openyurtio/yurt-edgex-manager/releases/download/v0.2.0/yurt-edgex-manager.yaml
# check status of yurt-edgex-manager
$ kubectl get pods -n edgex-system |grep edgex
edgex-controller-manager-6c99fd9f9f-b9nnk 2/2 Running 0 6d22h
Create a nodepool named hangzhou, join node into this nodepool.
$ export WORKER_NODEPOOL="hangzhou"
$ export EDGE_NODE="node1"
# create nodepool hangzhou
$ cat <<EOF | kubectl apply -f -
apiVersion: apps.openyurt.io/v1alpha1
kind: NodePool
metadata:
name: $WORKER_NODEPOOL
spec:
type: Edge
EOF
# join edge node into nodepool hangzhou
$ kubectl label node $EDGE_NODE apps.openyurt.io/desired-nodepool=hangzhou
# check node status
$ kubectl get nodepool
NAME TYPE READYNODES NOTREADYNODES AGE
hangzhou Edge 0 1 6d22h
create EdgeX Foundry instance in nodepool hangzhou and deploy edgex-device-virtual
apiVersion: device.openyurt.io/v1alpha1
kind: EdgeX
metadata:
name: edgex-sample-beijing
spec:
version: jakarta
poolname: hangzhou
---
apiVersion: apps/v1
kind: Deployment
metadata:
labels:
org.edgexfoundry.service: edgex-device-virtual
name: edgex-device-virtual
spec:
replicas: 1
selector:
matchLabels:
org.edgexfoundry.service: edgex-device-virtual
strategy:
type: Recreate
template:
metadata:
labels:
org.edgexfoundry.service: edgex-device-virtual
spec:
hostname: edgex-device-virtual
nodeSelector:
apps.openyurt.io/nodepool: hangzhou
containers:
- name: edgex-device-virtual
image: openyurt/device-virtual:2.1.0
imagePullPolicy: IfNotPresent
ports:
- containerPort: 59900
name: "tcp-59900"
protocol: TCP
env:
- name: MESSAGEQUEUE_HOST
value: edgex-redis
- name: SERVICE_HOST
value: edgex-device-virtual
envFrom:
- configMapRef:
name: common-variables
startupProbe:
tcpSocket:
port: 59900
periodSeconds: 1
failureThreshold: 120
livenessProbe:
tcpSocket:
port: 59900
restartPolicy: Always
---
apiVersion: v1
kind: Service
metadata:
labels:
org.edgexfoundry.service: edgex-device-virtual
name: edgex-device-virtual
spec:
ports:
- name: "tcp-59900"
port: 59900
protocol: TCP
targetPort: 59900
selector:
org.edgexfoundry.service: edgex-device-virtual
type: NodePort
check EdgeX instance status
$ kubectl get edgex
NAME READY SERVICE READYSERVICE DEPLOYMENT READYDEPLOYMENT
edgex-sample-hangzhou true 9 9 9 9
2. install yurt-device-controller
install CRDs of yurt-device-controller
$ kubectl apply -f https://raw.githubusercontent.com/openyurtio/yurt-device-controller/main/config/setup/crd.yaml
use UnitedDeployment to deploy yurt-device-controller instance in nodepool hangzhou. It should be pointed out that we use cluster-admin ClusterRole just for demo purpose
apiVersion: apps.openyurt.io/v1alpha1
kind: UnitedDeployment
metadata:
labels:
controller-tools.k8s.io: "1.0"
name: ud-device
namespace: default
spec:
selector:
matchLabels:
app: ud-device
topology:
pools:
- name: hangzhou
nodeSelectorTerm:
matchExpressions:
- key: apps.openyurt.io/nodepool
operator: In
values:
- hangzhou
replicas: 1
tolerations:
- operator: Exists
workloadTemplate:
deploymentTemplate:
metadata:
creationTimestamp: null
labels:
app: ud-device
spec:
selector:
matchLabels:
app: ud-device
strategy: {}
template:
metadata:
creationTimestamp: null
labels:
app: ud-device
control-plane: controller-manager
spec:
containers:
- args:
- --health-probe-bind-address=:8081
- --metrics-bind-address=127.0.0.1:8080
- --leader-elect=false
- --namespace=default
- --v=5
command:
- /yurt-device-controller
image: openyurt/yurt-device-controller:v0.2.0
imagePullPolicy: IfNotPresent
livenessProbe:
failureThreshold: 3
httpGet:
path: /healthz
port: 8081
scheme: HTTP
initialDelaySeconds: 15
periodSeconds: 20
successThreshold: 1
timeoutSeconds: 1
name: manager
readinessProbe:
failureThreshold: 3
httpGet:
path: /readyz
port: 8081
scheme: HTTP
initialDelaySeconds: 5
periodSeconds: 10
successThreshold: 1
timeoutSeconds: 1
resources:
limits:
cpu: 100m
memory: 512Mi
requests:
cpu: 100m
memory: 512Mi
securityContext:
allowPrivilegeEscalation: false
dnsPolicy: ClusterFirst
restartPolicy: Always
securityContext:
runAsUser: 65532
---
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRoleBinding
metadata:
name: ud-rolebinding
roleRef:
apiGroup: rbac.authorization.k8s.io
kind: ClusterRole
name: cluster-admin
subjects:
- kind: ServiceAccount
name: default
namespace: default
check whether yurt-device-controller has been deployed successful
$ kubectl get pod |grep yurt-device-controller
yurt-device-controller-xxxxxx-sf7xz-79c9cbf4b7-mbfds 1/1 Running 0 6d22h
3. Check virtual devices synced from EdgeX
The device-virtual-go driver will automatically create and register 5 virtual devices of different kinds upon start, yurt-device-controller will then sync them to OpenYurt. You can use kubectl to check it:
$ kubectl get device
NAME NODEPOOL SYNCED AGE
hangzhou-random-binary-device hangzhou true 19h
hangzhou-random-boolean-device hangzhou true 19h
hangzhou-random-float-device hangzhou true 19h
hangzhou-random-integer-device hangzhou true 19h
hangzhou-random-unsignedinteger-device hangzhou true 19h
4. Uninstall and cleanup
$ export WORKER_NODEPOOL="hangzhou"
$ export EDGE_NODE="node1"
# 1.1 delete all device, deviceservice, deviceprofile资源
$ kubectl delete device --all
$ kubectl delete deviceprofile --all
$ kubectl delete deviceservice --all
# 1.2 uninstall yurt-device-controller
$ kubectl delete uniteddeployment yurt-device-controller
$ kubectl delete clusterrolebinding ud-rolebinding
# 1.3 delete CRDs of yurt-device-controller
$ kubectl delete -f https://raw.githubusercontent.com/openyurtio/yurt-device-controller/main/config/setup/crd.yaml
# 2.1 delete EdgeX instance
$ kubectl delete edgex --all
# 2.2 uninstall yurt-edgex-manager
$ kubectl delete -f https://github.com/openyurtio/yurt-edgex-manager/releases/download/v0.2.0/yurt-edgex-manager.yaml
# （optional）
# 3.1 remove node from nodepool
$ kubectl label node $EDGE_NODE apps.openyurt.io/desired-nodepool-
# 3.2 delete nodepool
$ kubectl delete nodepool $WORKER_NODEPOOL