This page explains how autoscaling automatically resizes your Immersive Stream for XR service instance and how to configure autoscaling on a service instance. By default, service instances have static capacity. With autoscaling enabled, your service instance automatically scales up and down to meet demand.
How autoscaler works
The autoscaler is region-specific and scales capacity based on the following values:
- Minimum capacity: This represents the minimum amount of capacity. It includes both allocated capacity and ready capacity that the autoscaler should maintain. Ready streaming servers are available to serve new streaming sessions requests from users. Allocated streaming servers actively serve a streaming session.
- Buffer: This represents the amount of ready capacity that the autoscaler should maintain.
- Maximum capacity: This is the maximum amount of the total of combined allocated and ready streaming servers that the autoscaler can provision.
While the autoscaler scales to maintain the buffer, new streaming servers are not immediately available and can take some time to be provisioned before they can serve a streaming session. This makes the autoscaler ideal for periods of consistently high or low traffic where it can scale up or down to meet demand. You are billed for the amount of capacity your instance has, so during periods of low traffic, the autoscaler should scale down and allow for some cost-savings when compared with a non-autoscaled service instance.
Configure the buffer, minimum capacity, and maximum capacity values such that
the buffer is less than or equal to the minimum capacity and both are less
than the maximum capacity. All three values must be greater than zero.
Using the autoscaler
The following section explains how to configure autoscaling for your service instance regions.
Create a service instance with an autoscaled region
Console
In the Google Cloud console, go to the Create a service instance page.
Complete the initial steps in the instance creation form. For more details, see the Quickstart guide.
In the Enable service instance locations step, select a region and select the Enable autoscaling checkbox.
Enter the maximum capacity, minimum capacity, and buffer size values and then click Done.
Add additional regions as needed and then complete the remaining steps in the form before clicking CREATE to create your service instance.
gcloud
To create a service instance with autoscaled and non-autoscaled regions, use the following command:
gcloud immersive-stream xr instances create INSTANCE_NAME \
--content=CONTENT_NAME \
--version=CONTENT_VERSION \
--add-region="region=REGION_1,capacity=MAXIMUM_CAPACITY,enable_autoscaling=true,autoscaling_buffer=BUFFER,autoscaling_min_capacity=MINIMUM_CAPACITY" \
--add-region="region=REGION_2,capacity=CAPACITY" \
--async
Replace the following:
INSTANCE_NAME: the name of the service instance.CONTENT_NAME: the name of the content resource to deploy to the instance.REGION_1: the first region for the new service instance. See Locations and Pricing for all options.MAXIMUM_CAPACITY: the maximum capacity in the first region.BUFFER: the buffer in the first region.MINIMUM_CAPACITY: the minimum capacity in the first region.REGION_2: the second region for the new service instance. See Locations and Pricing for all options.CAPACITY: the capacity for the non-autoscaled region
This is an asynchronous operation. To check the status of the creation,
describe the instance. A lifecycle state of Ready indicates that the operation is complete.
gcloud immersive-stream xr instances describe INSTANCE_NAME
Example:
The following command creates a service instance with two regions, an autoscaled region with maximum capacity of 5, minimum capacity of 3 and a buffer of 2, and a non-autoscaled region with capacity of 3:
gcloud immersive-stream xr instances create my_instance \
--content=my_content \
--version=v1 \
--add-region="region=us-west4,capacity=5,enable_autoscaling=true,autoscaling_buffer=2,autoscaling_min_capacity=3" \
--add-region="region=us-central1,capacity=3" \
--async
Add a region with autoscaling enabled
Console
In the Google Cloud console, go to the Service instances list page.
In the Service instance column, click the name of your instance to go to the Service instance detail page.
Above the Regions table, click Add. This opens the Add region panel.
Select a region.
Select the Enable autoscaling checkbox.
Enter the maximum capacity, minimum capacity, and buffer size values and then click ADD.
gcloud
To add a region with autoscaling, use the following command:
gcloud immersive-stream xr instances update INSTANCE_NAME \
--add-region=="region=REGION,capacity=MAXIMUM_CAPACITY,enable_autoscaling=true,autoscaling_buffer=BUFFER,autoscaling_min_capacity=MINIMUM_CAPACITY" \
--async
Replace the following:
INSTANCE_NAME: the name of the service instance.REGION: the region to add.MAXIMUM_CAPACITY: the maximum capacity in the region.BUFFER: the buffer in the region.MINIMUM_CAPACITY: the minimum capacity in the region.
This is an asynchronous operation. To check the status of the update,
describe the instance. A lifecycle state of Ready indicates that the operation is complete.
gcloud immersive-stream xr instances describe INSTANCE_NAME
Example:
The following command adds a region with maximum capacity of 5, minimum capacity of 3 and a buffer of 2:
gcloud immersive-stream xr instances update my_instance \
--add-region="region=us-west4,capacity=5,enable_autoscaling=true,autoscaling_buffer=2,autoscaling_min_capacity=3" \
--async
Enable autoscaling in a region
Console
In the Google Cloud console, go to the Service instances list page.
In the Service instance column, click the name of your instance to go to the Service instance detail page.
Find the row containing the region that you want to update in the Regions table, and click the overflow action button (three vertical dots) on the right side of the row. Click Edit. This opens the Edit capacity panel.
Check the Enable autoscaling checkbox.
Fill out the maximum capacity, minimum capacity, and buffer size fields and then click SAVE.
gcloud
To enable autoscaling in a region, use the following command:
gcloud immersive-stream xr instances update INSTANCE_NAME \
--update-region="region=REGION,capacity=MAXIMUM_CAPACITY,enable_autoscaling=true,autoscaling_buffer=BUFFER,autoscaling_min_capacity=MINIMUM_CAPACITY" \
--async
Replace the following:
INSTANCE_NAME: the name of the service instance.REGION: the region to enable autoscaling in.MAXIMUM_CAPACITY: the maximum capacity in the region.BUFFER: the buffer in the region.MINIMUM_CAPACITY: the minimum capacity in the region.
This is an asynchronous operation. To check the status of the update,
describe the instance. A lifecycle state of Ready indicates that the operation is complete.
gcloud immersive-stream xr instances describe INSTANCE_NAME
Example:
The following command enables autoscaling in a region with maximum capacity of 5, minimum capacity of 3 and a buffer of 2:
gcloud immersive-stream xr instances update my_instance \
--update-region="region=us-west4,capacity=5,enable_autoscaling=true,autoscaling_buffer=2,autoscaling_min_capacity=3" \
--async
Disable autoscaling in a region
Console
In the Google Cloud console, go to the Service instances list page.
In the Service instance column, click the name of your instance to go to the Service instance detail page.
Find the row containing the region that you want to update in the Regions table, and click the overflow action button (three vertical dots) on the right side of the row. Click Edit. This opens the Edit capacity panel.
Clear the Enable autoscaling checkbox.
Enter the capacity value and then click SAVE.
gcloud
To disable autoscaling in a region, use the following command:
gcloud immersive-stream xr instances update INSTANCE_NAME \
--update-region="region=REGION,capacity=CAPACITY,enable_autoscaling=false" \
--async
Replace the following:
INSTANCE_NAME: the name of the service instance.REGION: the region to disable autoscaling in.CAPACITY: the capacity in the region.
This is an asynchronous operation. To check the status of the update,
describe the instance. A lifecycle state of Ready indicates that the operation is complete.
gcloud immersive-stream xr instances describe INSTANCE_NAME
Example:
The following command disables autoscaling in a region:
gcloud immersive-stream xr instances update my_instance \
--update-region="region=us-west4,capacity=5,enable_autoscaling=false" \
--async
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Last updated 2024-04-24 UTC.