Showing content from https://docs.oracle.com/en-us/iaas/Content/devops/using/create_instancegroup_environment.htm below:
Creating a Compute Instance Group Environment
- Open the navigation menu and click Developer Services. Under DevOps, click Projects.
- On the DevOps Projects page, select an existing project, or create a DevOps project.
- On the details page of the project, from the left side, click Environments.
- On the Environments page, click Create environment.
- In the Basic information section, provide the following details and click Next:
- Select Instance Group as the environment type.
- Enter a name for the environment.
- (Optional) Add a description for the environment.
- (Optional) To add tags to the environment, click Show tagging options. Tagging is a metadata system that lets you organize and track the resources in your tenancy.
If you have permissions to create a resource, you also have permissions to add free-form tags to that resource.
To add a defined tag, you must have permissions to use the tag namespace.
For more information, see Resource Tags.
- To add instances, select one of the following options:
- Filter - Manually select the instances for the instance group.
- Query - Specify a query to select instances at runtime.
Queries apply search conditions to specific resource types and let you filter results. For more information, see
Search Language Syntax
.
- If you select Filter option, then follow these steps to add instances:
- Click Add instance.
- Use the Region and Compartment fields to select compute hosts from a specific region and compartment. Note
Each instance group can have compute hosts only from one region at a time.
- Use the Filter by state, Filter by shape, and Filter by text fields to further narrow down the search for compute hosts.
- Select instances from the displayed list to create an instance group, and click Add instance.
- Select the instance group to reference.
To remove instance from the group, click Remove instance. Removing instance from the group does not result in deletion of these instances. They remain in running state.
- If you select Query option, then follow these steps to add instances:
- Click Edit query.
- Use the Region field to select compute hosts from a specific region.
- Enter the query to add instances at runtime.
DevOps includes the instances that match the query output during the deployment run. You can use this option to dynamically add instances for instance group deployment at runtime. Freeform tags can be used to tag the required resources in the query, for example, freeformTags.key = 'app' && freeformTags.value = 'helloword'
.
- Click Add instance query.
- Click Create environment.
A reference to the selected instance group environment is created. You can create a deployment pipeline to deploy artifacts to instance groups.
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