Initial commit

.ansible-lint.yml

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+---
+skip_list:
+  - no-handler
+  - command-instead-of-shell
+  - no-changed-when
+  - line-length
+  - fqcn-builtins

.github/CODEOWNERS

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+* @francomile

.github/workflows/ansible_lint.yml

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+name: "Lint Ansible roles"
+
+on:
+  push:
+    branches-ignore:
+      - main
+
+jobs:
+  ansible-lint:
+    name: "Ansible Lint"
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: "Checkout"
+      uses: actions/checkout@v4
+      with:
+        fetch-depth: 0
+
+    - name: "Lint Ansible Playbook"
+      uses: ansible/ansible-lint-action@v6.0.2
+      with:
+        path: ./

.github/workflows/push_to_galaxy.yml

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+---
+# This workflow requires a GALAXY_API_TOKEN secret present in the GitHub repository or organization. The TOKEN can be generated in https://galaxy.ansible.com/ui/token/
+
+name: "Release role to Ansible Galaxy"
+on:
+  push:
+    branches:
+      - main
+    tags:
+      - '*'
+
+defaults:
+  run:
+    working-directory: "francomile.common"
+
+jobs:
+  release:
+    name: "Release to Galaxy"
+    runs-on: ubuntu-latest
+    steps:
+      - name: "Check out."
+        uses: actions/checkout@v4
+        with:
+          path: "francomile.common"
+
+      - name: "Set up Python 3."
+        uses: actions/setup-python@v5
+        with:
+          python-version: '3.x'
+
+      - name: "Install Ansible."
+        run: pip3 install ansible-core
+
+      - name: "Import to Galaxy."
+        run: >-
+          ansible-galaxy role import --token ${{ secrets.GALAXY_API_TOKEN }}
+          francomile $(echo ${{ github.repository }} | cut -d/ -f2 )

.gitignore

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+.DS_Store
+.vscode
+.idea
+.dccache
+######## DON'T REMOVE THE BELOW FILE IGNORE #################
+# ignore secret variables file for Ansible sensitive variables.
+**/secret_vars.yaml*

README.md

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+# Ansible Prometheus Node Exporter Role
+
+## Actions of the Role
+
+* Install Prometheus node_exporter
+
+## Common Usage
+
+```yaml
+roles:
+  - {
+    role: prom_node_exporter,
+    prom_node_exporter_basedir: "/opt/node_exporter",
+    prom_node_exporter_version: "v1.8.1",
+    tags: ["node-exporter"]
+  }
+```
+
+## Run the playbook
+
+```shell
+ansible-playbook -i inventory playbook.yaml -t "node-exporter"
+```

defaults/main.yaml

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+---
+prom_node_exporter_basedir: "/opt/node_exporter"
+prom_node_exporter_version: "v1.8.1"

handlers/main.yaml

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+---
+- name: "Restart node_exporter"
+  ansible.builtin.command:
+    cmd: "docker compose -f {{ prom_node_exporter_basedir }}/docker-compose.yaml up -d --force-recreate"
+  register: cmd_output
+  changed_when: cmd_output.rc != 0

meta/main.yaml

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+---
+galaxy_info:
+  role_name: prom_node_exporter
+  author: "Rubens Franco"
+  description: "Install Prometheus node_exporter"
+  license: "GNU GENERAL PUBLIC LICENSE v2"
+  min_ansible_version: "2.9"
+  platforms:
+    - name: Ubuntu
+      versions:
+        - "jammy"
+        - "focal"
+        - "bionic"
+    - name: Debian
+      versions:
+        - "bullseye"
+        - "buster"
+    - name: EL
+      versions:
+        - "9"
+        - "8"
+  galaxy_tags:
+    - monitoring
+    - observability
+    - prometheus
+    - exporter
+    - node
+dependencies: []

tasks/main.yaml

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+---
+- name: "Prom Node Exporter | Create directories tree for node_exporter"
+  ansible.builtin.file:
+    path: "{{ prom_node_exporter_basedir }}"
+    state: directory
+    owner: root
+    group: root
+    mode: "0755"
+
+- name: "Prom Node Exporter | Copy docker-compose.yaml template"
+  ansible.builtin.template:
+    src: "docker-compose.yaml.j2"
+    dest: "{{ prom_node_exporter_basedir }}/docker-compose.yaml"
+    owner: root
+    group: root
+    mode: "0640"
+  notify: "Restart node_exporter"
+
+- name: "Prom Node Exporter | Start node_exporter"
+  ansible.builtin.command:
+    cmd: "docker compose -f {{ prom_node_exporter_basedir }}/docker-compose.yaml up -d"
+  register: cmd_output
+  changed_when: cmd_output.rc != 0

templates/docker-compose.yaml.j2

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+version: '3.9'
+
+services:
+  node_exporter:
+    image: prom/node-exporter:{{ prom_node_exporter_version }}
+    container_name: node_exporter
+    command:
+      - '--path.rootfs=/host'
+      - --collector.filesystem.ignored-mount-points
+      - "^/(sys|proc|dev|host|etc|rootfs/var/lib/docker/containers|rootfs/var/lib/docker/overlay2)($$|/)"
+    deploy:
+      restart_policy:
+        condition: on-failure
+    network_mode: host
+    pid: host
+    volumes:
+      - '/:/host:ro,rslave'
+    logging:
+      driver: "journald"