redfish_warmup.md

Wednesday Warmup

Prep

1. Let's freshen our Redfish container. Run this command to stop and remove all running Docker containers>:

   student@bchd:~$ docker stop $(docker ps -aq) && docker rm $(docker ps -aq)

2. Now rebuild your Redfish container.

   student@bchd:~$ sudo docker run -p 2224:8000 -d --rm dmtf/redfish-mockup-server:latest

3. Confirm your dmtf/redfish-mockup-server:latest container is back up and running.

   student@bchd:~$ docker ps

   CONTAINER ID   IMAGE                                                         COMMAND                  CREATED        STATUS                  PORTS                                       NAMES
   966c371aaa2e   dmtf/redfish-mockup-server:latest                             "python /usr/src/app…"   22 hours ago   Up 22 hours (healthy)   0.0.0.0:2224->8000/tcp, :::2224->8000/tcp   thirsty_booth
   

4. Confirm that you have your Redfish container in your inventory as a host. A handy way to check this is with the ansible-inventory command, which lists all hosts Ansible has access to via its inventory files.

   student@bchd:~$ ansible-inventory --graph | grep Redfish

     |  |--Redfish
   

   Don't see that output? Your inventory file may have been configured incorrectly/removed. Let Chad know!

Procedure

1. Create a new BROKEN playbook for our warmup today.

   student@bchd:~$ vim ~/mycode/wed_warmup.yaml

   ---
   - name: Wednesday Warmup
     hosts: bluefish
     connection: local
     gather_facts: false
   
     - name: Get CPU model
       ansible.general.redfish_info:
         category: Systems
         command: GetCpuInventory
         baseuri: "{{ baseuri }}"
   
     - name: Restart system power gracefully
       ansible.general.redfish_command:
         category: Systems
         command: PowerForceOff
         resource_id: BMC
         baseuri: "{{ baseuri }}"

GOALS:

The playbook above is broken and won't run! Not only that, the tasks are not accomplishing what they are supposed to! Edit the playbook above to do the following:

• Execute without error.
• One task is supposed to gather info about the CPU inventory of our server.
• One task is supposed to send a command to restart the server gracefully.
• BONUS: Tasks are missing! register the output from both tasks above and print them out with debug.
• ROCKET SCIENTIST BONUS: Assuming you were able to register/debug the output, use .dot.notation to slice the CPU data to display the Model of the FIRST CPU.

SOLUTION

---
- name: Wednesday Warmup
  hosts: Redfish
  connection: local
  gather_facts: false

  tasks:
  - name: Get CPU model
    community.general.redfish_info:
      category: Systems
      command: GetCpuInventory
      baseuri: "{{ baseuri }}"
      username: "{{ username }}"
      password: "{{ password }}"
    register: cpuinventory

  - name: bonus
    debug:
      var: cpuinventory

  - name: rocket scientist bonus
    debug:
      var: cpuinventory.redfish_facts.cpu.entries.0.1.0.Model

  - name: Restart system power gracefully
    community.general.redfish_command:
      category: Systems
      command: PowerGracefulRestart
      resource_id: 437XR1138R2
      baseuri: "{{ baseuri }}"
      username: "{{ username }}"
      password: "{{ password }}"
    register: powerresult

  - name: bonus
    debug:
      var: powerresult