Ant Media Server

Ant Media Server Helm chart for Kubernetes

Introduction

Ant Media Server installs the following

• Edge/Origin pods
• MongoDB pod
• Ingress controller

Prerequisites

• Kubernetes >= 1.23 (You must have a Kubernetes cluster installed and be able to access it with kubectl.)
• Helm v3 (https://helm.sh/docs/intro/install/)
• cert-manager (No need if you are using "ams-k8s-ssl.sh" script)

Installing the Chart

Add the AMS repository to Helm:

helm repo add antmedia https://ant-media.github.io/helm
helm repo update
helm install antmedia antmedia/antmedia \
  --set origin={origin}.{example.com} \
  --set edge={edge}.{example.com} \
  --set licenseKey="YOUR_LICENSE_KEY" \
  --namespace antmedia --create-namespace

Installing SSL

By default, a self-signed certificate comes in the Ant Media Server Kubernetes structure that you install with Helm.

Custom Certificate

you can replace it with your own certificate as below or follow the steps below for Let's Encrypt.

kubectl create -n antmedia secret tls ${CERT_NAME} --key ${KEY_FILE} --cert ${CERT_FILE} 

AWS Certificate Manager

If you want to use your certificate created in AWS Certificate Manager, you must first install the AWS Load Balancer Controller

After the installation is complete, simply add the following parameters to the helm command.

--set provider.aws=true --set aws.ssl.arn="arn:aws:acm:eu-west-1:1111111:certificate/a8c1-4b84-8126d6d4a21b"

Update DNS Records

Run kubectl get ingress -n antmedia command to get your Ingress IP address and then update your DNS according to the ingress IP address and hostnames.

You can do a DNS query as follows.

dig origin.antmedia.cloud +noall +answer
dig edge.antmedia.cloud +noall +answer

Example output:

root@murat:~# dig edge.antmedia.cloud +noall +answer
edge.antmedia.cloud.	300	IN	A	x.x.x.x

If the result of this output is your Ingress IP address, your DNS has been updated so you can access via HTTPS (self-signed) or HTTP.

Let's Encrypt

If you want, you can do this with the script we have prepared or manually by following the steps below.

Installation with script

wget https://raw.githubusercontent.com/ant-media/helm/add_helm_repo/ams-k8s-ssl.sh

bash ams-k8s-ssl.sh

Then wait for the certificate to be created.

If everything went well, the output of the kubectl get -n antmedia certificate command will show the value True as follows.

NAME                   READY   SECRET                 AGE
antmedia-cert-origin   True    antmedia-cert-origin   21m

Screenshots

Manual installation

Click here for step-by-step installation.

Upgrade

As an example, we are updating to version 2.6.4. Don't forget to specify the version you want to install.

kubectl patch deployment ant-media-server-origin -p '{"spec":{"template":{"spec":{"containers":[{"name":"ant-media-server","image":"antmedia/enterprise:2.6.4"}]}}}}' -n antmedia
kubectl patch deployment ant-media-server-edge -p '{"spec":{"template":{"spec":{"containers":[{"name":"ant-media-server","image":"antmedia/enterprise:2.6.4"}]}}}}' -n antmedia

Delete the Ant Media Server pods and ensure they are started with the new image.

kubectl delete pods -l app=ant-media-origin -n antmedia
kubectl delete pods -l app=ant-media-edge -n antmedia

Uninstalling the Chart

helm delete antmedia -n antmedia

Parameters

Parameter	Description	Default
image.repository	image repository	antmedia/enterprise
image.tag	image tag	latest
origin	Domain name of Origin server	{}
edge	Domain name of Edge server	{}
hostNetwork	Use turn server if false. By default, true, which limits to one pod per node. When false, multiple pods can be run per node.	true
mongoDB	MongoDB host	mongo
licenseKey	License key	{}
autoscalingOrigin.targetCPUUtilizationPercentage	Target CPU utilization percentage for autoscaler for Origin	60
autoscalingOrigin.minReplicas	Minimum number of deployment replicas for the compute container.	1
autoscalingOrigin.maxReplicas	Maximum number of deployment replicas for the compute container.	10
autoscalingEdge.targetCPUUtilizationPercentage	Target CPU utilization percentage for autoscaler for Edge	60
autoscalingEdge.minReplicas	Minimum number of deployment replicas for the compute container.	1
autoscalingEdge.maxReplicas	Maximum number of deployment replicas for the compute container.	10
MongoDBNodeSelector	Node Affinity for MongoDB deployment (Default key: nodepool).	{}
EdgeNodeSelector	Node Affinity for AMS Edge deployment (Default key: nodepool).	{}
OriginNodeSelector	Node Affinity for Edge Origin deployment (Default key: nodepool).	{}
kafkaURL	The Kafka URL address to collect data.	{}
OriginCpu	Set the CPU limit for Origin Pods.	{}
EdgeCpu	Set the CPU limit for Edge Pods.	{}
UseGlobalIP	Use global(Public) IP in network communication.	true
UseServerName	Use Public IP as server name.	true
ReplaceCandidateAddress	Replace candidate address with server name.	true
TurnStunServerURL	TURN/STUN Server URL for the server side. It should start with "turn:URL:3478" or "stun:".	{}
TurnUsername	TURN Server Usermame.	{}
TurnPassword	TURN Server Password.	{}

Turn Server Configuration

If hostNetwork is set to false, you will need a TURN server, and coturn will be automatically deployed. Example usage is as follows:

helm install antmedia antmedia/antmedia \
  --set origin={origin}.{example.com} \
  --set edge={edge}.{example.com} \
  --set licenseKey="YOUR_LICENSE_KEY" \
  --set hostNetwork=false \
  --set TurnUsername="YOUR_TURNSERVER_USERNAME" \
  --set TurnPassword="YOUR_TURNSERVER_PASSWORD" \
  --set TurnStunServerURL="turn:coturn" \
  --set UseGlobalIP=false \
  --set UseServerName=false \
  --namespace antmedia --create-namespace

Example Usage

helm install antmedia antmedia/antmedia \
  --set origin=origin.antmedia.cloud \
  --set edge=edge.antmedia.io \
  --set autoscalingEdge.targetCPUUtilizationPercentage=20 \
  --set autoscalingEdge.minReplicas=2 \
  --namespace antmedia --create-namespace