Terraform — Deploy a single instance in Oracle Cloud
Deploy a single instance in Oracle Cloud running under the Always Free tier.
A custom Virtual Cloud Network (VCN) allows for more control over network security. The Terraform script below creates a custom VCN,
The following Ansible playbook covers basic setup for Ubuntu (e.g, swap, fail2ban),
You can get a free hostname for the instance using the Ansible playbook below,
Use a Njalla hostname for the instance using the Ansible playbook below,
- GitHub: github.com/k3karthic/terraform__oci-instance-2
- Codeberg: codeberg.org/k3karthic/terraform__oci-instance-2
Step 1: Create a file to store the Terraform input variables. Use
india.tfvars.sample as a reference. Keep
india.tfvars as the filename or change the name in the following files,
Step 2: Set
ad to the desired Availability Domain. Oracle Cloud Infrastructure randomizes the availability domains by tenancy to help balance capacity in the data centres. To get the specific names of your account, use the ListAvailabilityDomains IAM API. You can also see the names when you use the Console to launch an instance and choose which availability domain to launch the instance in.
Step 3: Set
compartment to the desired value. List of compartments in your Oracle Cloud account are at cloud.oracle.com/identity/compartments.
Step 4: Set
vcn_id to the desired VCN ID. Set
subnet_id to the desired Subnet ID.
Step 5: Choose a
shape from the following two choices,
VM.Standard.A1.Flex— Ampere ARM A1
VM.Standard.E2.1.Micro— AMD EPYC 7551
Step 6: Choose an appropriate amount of cpu and memory based on the
flex_ocpusbetween 1 and 4. Set
flex_memory_in_gbsbetween 1 and 24.
0. Terraform will use the default value of the
Step 7: Choose an
image_id from docs.oracle.com/en-us/iaas/images. For
VM.Standard.A1.Flex, use aarch64 images.
Oracle provider documentation is at registry.terraform.io/providers/hashicorp/oci/latest.
Oracle Cloud Shell can deploy this script without configuration.
Step 1: Use the following command to create a Terraform plan,
To avoid fetching the latest state of resources, use the following command,
$ ./bin/plan.sh -refresh=false
Step 2: Review the plan using the following command,
Step 3: Apply the plan using the following command,
Step 4: Use the following command to display the instance,
$ terraform show oci_core_instance.free
Use the following command to decrypt the files after cloning the repository,
Use the following command after running
bin/apply.sh to encrypt the updated state files,
$ ./bin/encrypt.sh <gpg key id>