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Redfish Warmup

Prep

  1. Confirm your dmtf/redfish-mockup-server:latest container is 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

    Don't see it? Use this to rebuild it: sudo docker run -p 2224:8000 -d --rm dmtf/redfish-mockup-server:latest

  2. 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

  3. If you don't see that output, it means that your inventory was reset at some point by our bash script. No worries! Open the dropdown below and PASTE the entire bash block at your command line. Super easy.

CLICK HERE FOR REDFISH INVENTORY FIX 
#!/bin/bash

# Set BASEURL using FQDN discovery
export BASEURL="aux1-$(hostname -d).live.alta3.com"

# Define the file to check/update
HOSTS_FILE=~/mycode/inv/dev/hosts

# Create the file if it doesn't exist
mkdir -p ~/mycode/inv/dev
touch "$HOSTS_FILE"

# Check and append if needed
if ! grep -q "\[redfish\]" "$HOSTS_FILE" || ! grep -q "baseuri=$BASEURL" "$HOSTS_FILE"; then
  echo -e "\n[redfish]\nRedfish     baseuri=$BASEURL username=root password=null" >> "$HOSTS_FILE"
  echo "Redfish inventory block added."
else
  echo "Redfish inventory block already present."
fi

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.
  • SUPER 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