Running Jamcaster in GKE autopilot
If you are on an unreliable internet connection but want to stream a Jamulus room, running Jamcaster on Google Kubernetes Engine in autopilot mode can be a cost-efficient way do it. You don’t have to manage virtual machines, and you don’t have to worry about the cost of running the cluster — you only pay for the time Jamcaster spends running.
How much does it cost?
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For cluster management cost, Google Cloud provides a free tier that covers the management fee of cluster per billing account.
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For running cost in the Singapore region: 2 vCPU + 2 GB RAM + 0.3 GB egress = ~$0.16 per hour.
Create a Google Kubernetes Engine cluster
| If you already have a GKE cluster, you can reuse it. Google Cloud only provides you with one free Kubernetes cluster per billing account. If you have more than one, you will be charged up to $74.4 per cluster per month. |
Create a GKE autopilot cluster:
gcloud container clusters create-auto k8s-playground --region $GOOGLE_CLOUD_REGION
Wait 5 minutes.
Configure Kubectl:
gcloud container clusters get-credentials k8s-playground --region $GOOGLE_CLOUD_REGION
Get the nodes:
kubectl get nodes
Push Docker image to Artifact Repository
| This will cost about $0.3 per month to store the Jamcaster image on the cloud. |
Create an artifact repository:
gcloud artifacts repositories create jamcaster \ --repository-format=docker \ --location=$GOOGLE_CLOUD_REGION \ --description="Docker repository for jamcaster"
Pull Jamcaster image:
docker pull ghcr.io/dtinth/jamcaster:main
Tag the image:
docker tag ghcr.io/dtinth/jamcaster:main $GOOGLE_CLOUD_REGION-docker.pkg.dev/$GOOGLE_CLOUD_PROJECT/jamcaster/jamcaster:main
Configure Docker to push to the artifact repository:
gcloud auth configure-docker $GOOGLE_CLOUD_REGION-docker.pkg.dev
Push the image to the artifact repository:
docker push $GOOGLE_CLOUD_REGION-docker.pkg.dev/$GOOGLE_CLOUD_PROJECT/jamcaster/jamcaster:main
Create a pod
apiVersion: v1
kind: Pod
metadata:
name: jamcaster
spec:
containers:
- name: jamcaster
image: $GOOGLE_CLOUD_REGION-docker.pkg.dev/$GOOGLE_CLOUD_PROJECT/jamcaster/jamcaster:main
env:
- name: VIDEO_STREAM_TARGET
value: rtmps://live-api-s.facebook.com:443/rtmp/<stream_key>
- name: JAMULUS_SERVER
value: <ip>:<port>
- name: JAMULUS_CLIENT_NAME
value: JamRadio
resources:
requests:
cpu: 2000m
memory: 1Gi
limits:
cpu: 2000m
memory: 1Gi
restartPolicy: OnFailure| Replace the variables with your own values. |