Instance Groups concepts
Note
We are gradually deprecating the ru-central1-c availability zone. For more information about development plans for availability zones and migration options, see this Yandex Cloud blog post.
If you have instance groups in the ru-central1-c availability zone, move them.
Instance Groups is a Compute Cloud component that allows you to create and manage VM instance groups.
Instance Groups can automatically identify and fix unhealthy instances in a group to ensure their optimal performance.
Warning
All operations in Instance Groups must be performed on behalf of a service account. For more information, see Access.
Each group consists of one or more instances of the same type. Group instances may reside in different availability zones. You can read more about Yandex Cloud availability zones here.
Group instances can also be part of a VM placement group. To enable this, when creating an instance group, describe placement group parameters in the instance template. You can create an instance group in a placement group using the CLI and API.
You can use Instance Groups to:
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Simultaneously update all instances in a group.
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Provide integration with Yandex Network Load Balancer and Yandex Application Load Balancer and evenly distribute workloads across instances.
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Automatically recover a VM instance if an application fails.
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Maintain the performance of application services in a reliable environment with multi-zone features instead of allocating resources for each zone.
When creating a group, you need to describe the following:
An instance group created in a folder can be accessed by all VMs connected to the same cloud network. For more information about networking, see the Virtual Private Cloud documentation.