Instance Groups — Reference
List Columns
| Column | Description |
|---|---|
| Instance group name | The name of the group |
| Policy | The Affinity policy currently applied: Soft Anti Affinity or Soft Affinity |
| Instances | The list of Instances in the group (shows up to 2 names; the rest are shown as "+N") |
| Created at | The time the group was created (UTC+7) |
Fields When Creating a Group
| Field | Required | Description |
|---|---|---|
| Name | Yes | The group name. Allowed characters: letters, digits, underscores (_), hyphens (-), spaces, and periods (.) |
| Policy | Yes | The hardware placement policy. Cannot be changed after creation |
| Instances | Yes | The list of Instances to add to the group. At least 2 Instances must be selected |
Affinity Policies
| Policy | Behavior | When resources are insufficient |
|---|---|---|
| Soft Anti Affinity | Requires all Instances to run on the same physical host server | The system rejects creating new Instances in the group |
| Soft Affinity | Prefers to place Instances on the same physical host server, but does not require it | The system still creates the Instance on a different server |
Actions in the Menu (⋮)
| Action | Description |
|---|---|
| Attach instance to instance group | Add an Instance that does not belong to any group to the current group |
| Edit instance group | Rename the group or adjust the list of Instances. The policy cannot be edited |
| Delete instance group | Delete the group. The Instances inside are not deleted |
Limits
| Item | Value |
|---|---|
| Maximum number of groups per VPC | 10 |
| Maximum number of Instances per group | 10 |
| Minimum number of Instances per group | 2 |
| Number of groups an Instance can belong to | 1 |