Exploring Dapr-Introduction, Experiences, and Live Demo

July 20, 2023 - 1 minutes read - 208 words

I was very excited to be invited to give a talk about dapr. Below is my talk. My demo in the session is not successful as things in kubernetes and dapr field are changing very fast. My lab environment didn’t work as expected. Finially I make it work today, I share it here below.

Here is my talk at 18th July from time 2235 in below video.

Prerequisites

kubectl, kind, docker, dapr, git, vscode in WSL

vscode plugins: kubernetes, bridge to kubernetes

Setup dapr in local kind+MetalLB cluster

git clone https://github.com/jackliusr/k8s
cd k8s
 ./up.sh k8sugdapr
#above script will create a namespace todo-app as well

Set up debug env sample dapr application

https://learn.microsoft.com/en-us/visualstudio/bridge/bridge-to-kubernetes-sample#deploy-the-application

clone https://github.com/Azure/Bridge-To-Kubernetes
cd Bridge-To-Kubernetes/samples/todo-app
kubectl apply -n todo-app -f deployment.yaml

Debug

$ kubectl get svc -n todo-app
NAME           TYPE           CLUSTER-IP      EXTERNAL-IP    PORT(S)        AGE
database-api   ClusterIP      10.96.246.231   <none>         80/TCP         9s
frontend       LoadBalancer   10.96.188.60    172.18.255.1   80:30054/TCP   9s
kubernetes     ClusterIP      10.96.0.1       <none>         443/TCP        2m39s
stats-api      ClusterIP      10.96.90.36     <none>         80/TCP         9s
stats-cache    ClusterIP      10.96.14.158    <none>         6379/TCP       9s
stats-queue    ClusterIP      10.96.157.83    <none>         5672/TCP       9s
todos-db       ClusterIP      10.96.51.32     <none>         27017/TCP      9s

Open a browser from wsl, connect to 172.18.255.1 (frontend service external ip)

cd stats-api/
code .

Follow the instructions for other steps at https://learn.microsoft.com/en-us/visualstudio/bridge/bridge-to-kubernetes-sample#debug-the-stats-api-service,

Troubeshooting

Check logs of plugins of vscode