---
# Graylog Logging Stack
# Deploys MongoDB, OpenSearch, and Graylog

# System prerequisite: OpenSearch requires increased virtual memory
- name: set vm.max_map_count for OpenSearch
  become: true
  ansible.posix.sysctl:
    name: vm.max_map_count
    value: '262144'
    state: present
    sysctl_set: true
  tags: graylog

# Create directory structure
- name: create graylog host directory volumes
  become: true
  ansible.builtin.file:
    path: "{{ item }}"
    state: directory
    owner: "{{ podman_subuid.stdout }}"
    group: "{{ podman_subuid.stdout }}"
    mode: '0755'
  notify: restorecon podman
  loop:
    - "{{ graylog_path }}/mongo"
    - "{{ graylog_path }}/opensearch"
    - "{{ graylog_path }}/graylog/data"
    - "{{ graylog_path }}/graylog/data/config"
  tags: graylog

# OpenSearch runs as UID 1000 inside the container
- name: unshare chown the opensearch data volume
  become: true
  become_user: "{{ podman_user }}"
  changed_when: false
  ansible.builtin.command: |
    podman unshare chown -R 1000:1000 {{ graylog_path }}/opensearch
  tags: graylog

# Graylog runs as UID 1100 inside the container
- name: unshare chown the graylog data volume
  become: true
  become_user: "{{ podman_user }}"
  changed_when: false
  ansible.builtin.command: |
    podman unshare chown -R 1100:1100 {{ graylog_path }}/graylog
  tags: graylog

# Graylog requires minimal config file
- name: create graylog.conf
  become: true
  ansible.builtin.copy:
    dest: "{{ graylog_path }}/graylog/data/config/graylog.conf"
    content: |
      is_leader = true
      data_dir = /usr/share/graylog/data
      node_id_file = /usr/share/graylog/data/node-id
    mode: '0644'
  tags: graylog

- name: fix graylog.conf ownership
  become: true
  become_user: "{{ podman_user }}"
  changed_when: false
  ansible.builtin.command: |
    podman unshare chown 1100:1100 {{ graylog_path }}/graylog/data/config/graylog.conf
  tags: graylog

- name: flush handlers
  ansible.builtin.meta: flush_handlers
  tags: graylog

# MongoDB container
- import_tasks: podman/podman-check.yml
  vars:
    container_name: graylog-mongo
    container_image: "{{ mongo_image }}"
  tags: graylog

- name: create graylog-mongo container
  become: true
  become_user: "{{ podman_user }}"
  containers.podman.podman_container:
    name: graylog-mongo
    image: "{{ mongo_image }}"
    state: started
    restart_policy: on-failure:3
    log_driver: journald
    volumes:
      - "{{ graylog_path }}/mongo:/data/db:Z"
    ports:
      - "127.0.0.1:27017:27017/tcp"
  tags: graylog

- name: create systemd startup job for graylog-mongo
  include_tasks: podman/systemd-generate.yml
  vars:
    container_name: graylog-mongo
  tags: graylog

# OpenSearch container
- import_tasks: podman/podman-check.yml
  vars:
    container_name: graylog-opensearch
    container_image: "{{ opensearch_image }}"
  tags: graylog

- name: create graylog-opensearch container
  become: true
  become_user: "{{ podman_user }}"
  containers.podman.podman_container:
    name: graylog-opensearch
    image: "{{ opensearch_image }}"
    state: started
    restart_policy: on-failure:3
    log_driver: journald
    env:
      discovery.type: single-node
      DISABLE_SECURITY_PLUGIN: "true"
      OPENSEARCH_JAVA_OPTS: "-Xms512m -Xmx512m"
    volumes:
      - "{{ graylog_path }}/opensearch:/usr/share/opensearch/data:z"
    ports:
      - "127.0.0.1:9200:9200/tcp"
  tags: graylog

- name: create systemd startup job for graylog-opensearch
  include_tasks: podman/systemd-generate.yml
  vars:
    container_name: graylog-opensearch
  tags: graylog

# Graylog container
- import_tasks: podman/podman-check.yml
  vars:
    container_name: graylog
    container_image: "{{ image }}"
  tags: graylog

# Graylog uses host network to reach MongoDB/OpenSearch on 127.0.0.1
# Binds to: 9000 (web UI), 12202 (GELF HTTP input proxied via Caddy)
- name: create graylog container
  become: true
  become_user: "{{ podman_user }}"
  containers.podman.podman_container:
    name: graylog
    image: "{{ image }}"
    state: started
    restart_policy: on-failure:3
    log_driver: journald
    network: host
    env:
      GRAYLOG_PASSWORD_SECRET: "{{ graylog_password_secret }}"
      GRAYLOG_ROOT_PASSWORD_SHA2: "{{ graylog_root_password_sha2 }}"
      GRAYLOG_HTTP_EXTERNAL_URI: "https://{{ logs_server_name }}/"
      GRAYLOG_HTTP_BIND_ADDRESS: "0.0.0.0:9000"
      GRAYLOG_ELASTICSEARCH_HOSTS: "http://127.0.0.1:9200"
      GRAYLOG_MONGODB_URI: "mongodb://127.0.0.1:27017/graylog"
    volumes:
      - "{{ graylog_path }}/graylog/data:/usr/share/graylog/data:z"
      - "{{ geoip_path }}/{{ geoip_database_edition }}.mmdb:/etc/graylog/server/GeoLite2-City.mmdb:ro"
    requires:
      - graylog-mongo
      - graylog-opensearch
  tags: graylog

- name: create systemd startup job for graylog
  include_tasks: podman/systemd-generate.yml
  vars:
    container_name: graylog
  tags: graylog