About Creating a Stack

Learn about the options you have when creating a stack with Oracle WebLogic Server for OKE.

You have several options to choose from when you create a stack:

• Virtual Cloud Network (VCN)

  Oracle WebLogic Server for OKE can create a VCN for you when you create a stack, or you can specify a VCN that you have already created.

  If you let Oracle WebLogic Server for OKE create a new VCN, you must specify a contiguous CIDR block of your choice when you create the stack.

  If you use an existing VCN, you can let Oracle WebLogic Server for OKE create the subnets for you, or you can specify subnets that you have already created.

• Subnets

  Oracle WebLogic Server for OKE can create regional public and private subnets for the domain resources, or you can specify subnets that you have already created.

  If you let Oracle WebLogic Server for OKE create new subnets, you must specify a contiguous CIDR block of your choice for each subnet when you create the stack.

  If using existing subnets, you can specify either regional or availability domain-specific subnets that are scoped to one availability domain in the region.

• Network Access

  Oracle WebLogic Server for OKE creates private subnets for the Kubernetes cluster, administration compute instance, and the file system and mount target, and creates public subnets for the bastion instance and the WebLogic cluster load balancer. If using existing subnets, we recommend that you use the same architecture.

• Load Balancers

  When you create a stack, Oracle WebLogic Server for OKE creates a private load balancer to access administration consoles.

  The load balancers are assigned to a public subnet, for which you must specify a CIDR block if you let Oracle WebLogic Server for OKE create new subnets during stack provisioning. You must also specify shapes for the private load balancer.