Automate Oracle Cloud Infrastructure with Ansible Playbooks

---
# Copyright (c) 2020, 2024 Oracle and/or its affiliates.
# This software is made available to you under the terms of the GPL 3.0 license or the Apache 2.0 license.
# GNU General Public License v3.0+ (see COPYING or https://www.gnu.org/licenses/gpl-3.0.txt)
# Apache License v2.0
# See LICENSE.TXT for details.

- name: Create a compute instance pool and launch instances
  hosts: localhost
  collections:
    - oracle.oci
  vars:
    # Common networking definitions
    quad_zero_route: "0.0.0.0/0"
    TCP_protocol: "6"
    SSH_port: "22"

    vcn_name: "ansible-sample-create-instance-pool-vcn"
    vcn_cidr_block: "10.0.0.0/16"
    vcn_dns_label: "samplevcn"

    ig_name: "ansible-sample-create-instance-pool-ig"

    route_table_name: "ansible-sample-create-instance-pool-rt"
    # Route all internet access to our Internet Gateway
    route_table_rules:
      - cidr_block: "{{ quad_zero_route }}"
        network_entity_id: "{{ ig_id }}"

    subnet_cidr: "10.0.0.48/28"
    subnet_name: "ansible-sample-create-instance-pool-subnet"
    subnet_dns_label: "samplesubnet"

    securitylist_name: "ansible-sample-create-instance-pool-sec-list"

    instance_shape: "{{ lookup('env', 'SAMPLE_INSTANCE_SHAPE') | default('VM.Standard2.1', true) }}"
    instance_display_name: "ansible-sample-create-instance-pool-instance"
    instance_pool_configuration_name: "ansible-sample-create-instance-pool-configuration"
    instance_pool_name: "ansible-sample-create-instance-pool"

    #########################################
    # Tenancy specific configuration
    # *Note* - Override the following variables based on your tenancy
    # or set a valid value for the corresponding environment variable
    #########################################
    instance_ad: "{{ lookup('env', 'SAMPLE_AD_NAME') }}"
    instance_compartment: "{{ lookup('env', 'SAMPLE_COMPARTMENT_OCID') }}"
    # Provide an "OL" image
    instance_image: "{{ lookup('env', 'SAMPLE_IMAGE_OCID') }}"

  tasks:
    - block:
        - import_tasks: setup.yaml

        #==========================================================================================
        - name: Create a new basic compute instance configuration that has launch_details and VNIC configuration
          oci_compute_management_instance_configuration:
            compartment_id: "{{instance_compartment}}"
            name: "{{ instance_pool_configuration_name }}"
            instance_details:
              instance_type: "compute"
              launch_details:
                compartment_id: "{{instance_compartment}}"
                create_vnic_details:
                  assign_public_ip: True
                  display_name: "{{instance_display_name}}"
                display_name: "{{instance_display_name}}"
                shape: "{{instance_shape}}"
                source_details:
                  source_type: "image"
                  image_id: "{{instance_image}}"
                metadata:
                  ssh_authorized_keys: "{{ lookup('file',  my_test_public_key ) }}"
          register: result

        - name: Print instance configuration details
          debug:
            msg: "Created a new instance configuration {{ result.instance_configuration }}"

        - set_fact:
            instance_configuration_id: "{{result.instance_configuration.id }}"

        #==========================================================================================
        - name: Create a new instance pool from this instance configuration
          oci_compute_management_instance_pool:
            name: "{{ instance_pool_name }}"
            compartment_id: "{{instance_compartment}}"
            instance_configuration_id: "{{instance_configuration_id}}"
            # Launch 2 instances when pool is created
            size: 2
            placement_configurations:
              - availability_domain: "{{instance_ad}}"
                primary_subnet_id: "{{instance_subnet_id}}"
          register: result

        - set_fact:
            instance_pool_id: "{{result.instance_pool.id}}"

        - name: Print instance pool details
          debug:
            msg: "Created a new instance pool {{ result.instance_pool }}"

        #==========================================================================================
        - name: Get instance details of instances in the instance pool
          oci_compute_management_instance_pool_instance_facts:
            compartment_id: "{{instance_compartment}}"
            id: "{{instance_pool_id}}"
          register: result

        - name: Print details of instances in the new instance pool
          debug:
            msg: "Instances in instance pool {{instance_pool_id}} are {{ result.instance_pool_instances }}"

        - name: Get the first instance from the pool
          set_fact:
            instance_id: "{{result.instance_pool_instances[0].id}}"

        #==========================================================================================
        - name: Get the VNIC attachment details of that instance
          oci_compute_vnic_attachment_facts:
            compartment_id: "{{ instance_compartment }}"
            instance_id: "{{ instance_id }}"
          register: result

        - name: Get details of the VNIC of that VNIC attachment
          oci_network_vnic_facts:
            id: "{{ result.vnic_attachments[0].vnic_id }}"
          register: result

        - set_fact:
            instance_public_ip: "{{result.vnic.public_ip}}"

        - name: Print the public ip of the newly launched instance
          debug:
            msg: "Public IP of launched instance {{ instance_public_ip }}"

        #==========================================================================================
        - name: Wait (upto 10 minutes) for port 22 to become open
          wait_for:
            port: 22
            host: '{{ instance_public_ip }}'
            state: started
            delay: 10
            timeout: 600
          vars:
            ansible_connection: local

        #==========================================================================================
        - name: Attempt a ssh connection to the newly launched instance
          # Use "opc" user as this is an OL image
          # Disable SSH's strict host key checking just for this one command invocation
          command: ssh -o "UserKnownHostsFile=/dev/null" -o "StrictHostKeyChecking=no" -i {{ temp_certificates_path }}/private_key.pem opc@{{ instance_public_ip }} uname -a
          retries: 3
          delay: 5
          register: result
          until: result.rc == 0

        - name: Print SSH response from launched instance
          debug:
            msg: "SSH response from instance -> {{ result.stdout_lines }}"

        #==========================================================================================
        - import_tasks: teardown.yaml

      rescue:
        - import_tasks: teardown.yaml
          ignore_errors: yes

        - fail:
            msg: "{{ ansible_failed_result }}"