2.3.2. Imperative - Create VS, Pool and Members using seed file¶

You will create a consolidated playbook to deploy VS, Pools and associated Members.

The definition of the virtual server is now declared in a separate var file and each configuration item is created discretely (imperative model). Running the playbook will allow you to create a virtual server from end-to-end.

Create consolidated playbook

Create a playbook appseed.yaml.

Type nano playbooks/appseed.yaml
Type the following into the playbooks/appseed.yaml file.

---

- name: "Imperative: Deploy / teardown a web app (VS, pool, nodes)"
  hosts: bigips
  gather_facts: False
  connection: local
  vars_files:
    - ../files/appinfo.yaml

  vars:
    state: "present"

  environment: "{{ bigip_env }}"

  tasks:
    - name: Create virtual server
      bigip_virtual_server:
        name: "{{ vs_name }}"
        destination: "{{ vs_ip }}"
        port: "{{ vs_port }}"
        description: "Web App"
        snat: "{{ vs_snat }}"
        all_profiles:
          - "tcp-lan-optimized"
          - "clientssl"
          - "http"
          - "analytics"
        state: "{{ state }}"

    - name: Create a pool
      bigip_pool:
        name: "{{ pl_name }}"
        monitors: "{{ pl_monitor }}"
        lb_method: "{{ pl_lb }}"
        state: "{{ state }}"

    - name: Create nodes
      bigip_node:
        name: "{{ item.name }}"
        host: "{{ item.host }}"
        state: "{{ state }}"
      loop:
        - { name: "{{ nd_ip1 }}", host: "{{ nd_ip1 }}" }
        - { name: "{{ nd_ip2 }}", host: "{{ nd_ip2 }}" }

    - name: Add nodes to pool
      bigip_pool_member:
        host: "{{ item.host }}"
        port: "{{ nd_port }}"
        pool: "{{ pl_name }}"
        state: "{{ state }}"
      loop:
        - { host: "{{ nd_ip1 }}" }
        - { host: "{{ nd_ip2 }}" }
      when: state == "present"

    - name: Update a VS
      bigip_virtual_server:
        name: "{{ vs_name }}"
        pool: "{{ pl_name }}"
        state: "{{ state }}"
      when: state == "present"

Ctrl x to save file.

Create appinfo.yaml file

Type nano files/appinfo.yaml
Type the following into the files/appinfo.yaml file.

---

pl_name: app3_pl
pl_monitor: /Common/tcp
pl_lb: round-robin
nd_ip1: 10.1.20.15
nd_ip2: 10.1.20.16
nd_port: 80
vs_name: app3_vs
vs_ip: 10.1.10.30
vs_port: 443
vs_snat: automap

Run this playbook.
- Type ansible-playbook -e @creds.yaml --ask-vault-pass playbooks/appseed.yaml
Verify results in BIG-IP GUI.

Hint

You should see app3_vs deployed with 2 pool members. App should be accessible on https://10.1.10.30.
Run this playbook to teardown app.
- Type ansible-playbook -e @creds.yaml --ask-vault-pass playbooks/appseed.yaml -e state="absent"
Verify that app3_vs, pool and nodes should be deleted in BIG-IP GUI.

Note

This playbook leverages a config seed file in files/appinfo.yaml. Simply modify this file to deploy a new service.

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