The Red5 Pro Node instance image is used for autoscaling node groups. The Stream Manager will scale nodes using this instance image.

Create Red5 Pro Node Instance

Go to Linodes → Create Linode

• Select region from drop down. Example → US, Los Angeles, CA (us-lax)
• Choose an OS: Select Ubuntu 22.04 LTS
• Linode Plan: Choose Dedicated 4 GB in dedicated CPU plan category
• Details: Provide label to instance. Example → red5pro-autoscaling-node-instance
• Security: Enter strong password for root user and select the SSH key added in the previous step
• VPC: Select vpc and subnet created in previous step
  • Select both the checkbox option
    • Auto-assign a VPC IPv4 address for this Linode in the VPC
    • Assign a public IPv4 address for this Linode
• Firewall: Choose the firewall rule of nodes created in the previous step. Example → red5pro-autoscaling-node-sg
• Click on Create Linode

Install Red5 Pro on the Instance

• Connect to your instance over ssh as the root user. Example: ssh -i ssh_private_key.pem root@1.2.3.4
• Follow the Installing Red5Pro on a Linux Server instructions.
• Make sure that Red5 Pro service is set to auto-start on launch.
• Red5 Pro Clustering does not work without a license. You will need to purchase a Red5 Pro Professional license from Red5 Pro. Add a file named LICENSE.KEY with your Pro license key (16 characters, plus dashes, like: YOUR-LICE-NSEK-EY12) to the root of the Red5 Pro Server installation (/usr/local/red5pro/LICENSE.KEY).

Configure Autoscaling on the Instance

• Edit the file /usr/local/red5pro/conf/autoscale.xml
• Change the active value from false to true. Example: <property name="active" value="true"/>
• Save and close the file
• Example:

  <bean name="config" class="com.red5pro.clustering.autoscale.Configuration" >    
      <property name="active" value="true"/>

Remove Unnecessary Webapps and Plugins

To ensure a faster startup time for your server, we suggest deleting any web apps that you will not be using from the /usr/local/red5pro/webapps directory (for example: secondscreen, template, vod, streammanager, inspector). For ease of setup for the Stream Manager, leave a zipped copy of the server distribution on the server. If you are running a custom web app, then you would want to include that on your node servers.

In addition, it is recommended that you remove any plugins (found in the red5pro/plugins directory) that you will not be using, from the following list:

• red5pro-mpegts* — HLS
• red5pro-restreamer* — restreamer
• red5pro-socialpusher* — social media restreaming
• red5pro-client-suppressor* — suppressor
• inspector.jar — inspector

Verify Red5 Pro on Instance

Start the Red5 Pro service

systemctl start red5pro

Once you have started the Red5 Pro Server, you can verify that it is running and available by opening a web browser and navigating to http://<server-ip>:5080, where is the Public address value of your Red5 Pro server.

Create Red5 Pro Node Instance Image

• After you’ve configured Red5 Pro installation on instance, go back to the console of Linode cloud.
• Select Images from left side and click on Create Image.
• Select linode instance created earlier. Example → red5pro-autoscaling-node-instance
• Select disk and specify the image name in label section. Example → red5pro-autoscaling-node-image
• Click on Create Image

Please record Node image name to your checklist for the NODE_IMAGE_NAME parameter, it will be using in API calls to Stream Manager to create node group config.