Example of creating Graylog API token in Ansible

graylog-api-token.yml

# Ansible tasks to obtain an existing API token from Graylog or
# create a new token if there isn't one.
# (Token can be used to create utility scripts from templates.)
# Token will be named 'ansible'.
# Illustrates use of uri module to interact with REST API,
# and JSON parsing in Ansible.
# Requires Graylog admin user & password.

- set_fact:
    graylog_token: ''
    
# get or create a new API token
- name: check for existing Graylog admin token
  block: 
    - uri:
        url: "http://localhost:9000/api/users/admin/tokens/"
        user: admin
        password: "{{ graylog_password }}"
        headers:
          Accept: application/json
        return_content: yes
        force_basic_auth: yes
      register: graylog_tokens
    - set_fact:
        graylog_token: "{{ (graylog_tokens.json.tokens | selectattr('name', 'match', '^ansible$') | map(attribute='token') | list | first | default('')) }}"
      when: (graylog_tokens.json.tokens | length) > 0
  check_mode: no
  tags:
    - graylog-config
    - graylog-api

# create a new token if we didn't find an existing one
- name: create new Graylog token
  block:
    - uri:
        url: "http://localhost:9000/api/users/admin/tokens/ansible"
        user: admin
        password: "{{ graylog_password }}"
        method: POST
        return_content: yes
        force_basic_auth: yes
        body: '{}'
        body_format: json
      register: graylog_new_token
    - set_fact:
        graylog_token: "{{ graylog_new_token.json.token }}"
      when: graylog_new_token.status is defined and graylog_new_token.status == 200
  when: not graylog_token
  tags:
    - graylog-config
    - graylog-api