add playbook for prometheus node exporter

node-exporter/.gitignore

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+
+# Created by https://www.gitignore.io/api/macos,python,ansible
+# Edit at https://www.gitignore.io/?templates=macos,python,ansible
+
+### Ansible ###
+*.retry
+
+### macOS ###
+# General
+.DS_Store
+.AppleDouble
+.LSOverride
+
+# Icon must end with two \r
+Icon
+
+# Thumbnails
+._*
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+# Files that might appear in the root of a volume
+.DocumentRevisions-V100
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+# Directories potentially created on remote AFP share
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+
+### Python ###
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+*.egg-info/
+.installed.cfg
+*.egg
+MANIFEST
+
+# PyInstaller
+#  Usually these files are written by a python script from a template
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+*.cover
+.hypothesis/
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+
+# Translations
+*.mo
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+# Django stuff:
+*.log
+local_settings.py
+db.sqlite3
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+# Flask stuff:
+instance/
+.webassets-cache
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+# Scrapy stuff:
+.scrapy
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+# Sphinx documentation
+docs/_build/
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+# PyBuilder
+target/
+
+# Jupyter Notebook
+.ipynb_checkpoints
+
+# IPython
+profile_default/
+ipython_config.py
+
+# pyenv
+.python-version
+
+# pipenv
+#   According to pypa/pipenv#598, it is recommended to include Pipfile.lock in version control.
+#   However, in case of collaboration, if having platform-specific dependencies or dependencies
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+root@*
+
+# End of https://www.gitignore.io/api/macos,python,ansible

node-exporter/.idea/.gitignore

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+# Default ignored files
+/shelf/
+/workspace.xml
+# Editor-based HTTP Client requests
+/httpRequests/
+# Datasource local storage ignored files
+/dataSources/
+/dataSources.local.xml

node-exporter/.idea/inspectionProfiles/profiles_settings.xml

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+<component name="InspectionProjectProfileManager">
+  <settings>
+    <option name="USE_PROJECT_PROFILE" value="false" />
+    <version value="1.0" />
+  </settings>
+</component>

node-exporter/.idea/misc.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="Black">
+    <option name="sdkName" value="Python 3.13 (node-exporter)" />
+  </component>
+  <component name="ProjectRootManager" version="2" project-jdk-name="Python 3.13 (node-exporter)" project-jdk-type="Python SDK" />
+</project>

node-exporter/.idea/modules.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="ProjectModuleManager">
+    <modules>
+      <module fileurl="file://$PROJECT_DIR$/.idea/node-exporter.iml" filepath="$PROJECT_DIR$/.idea/node-exporter.iml" />
+    </modules>
+  </component>
+</project>

node-exporter/.idea/node-exporter.iml

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+<?xml version="1.0" encoding="UTF-8"?>
+<module type="PYTHON_MODULE" version="4">
+  <component name="NewModuleRootManager">
+    <content url="file://$MODULE_DIR$">
+      <excludeFolder url="file://$MODULE_DIR$/.venv" />
+    </content>
+    <orderEntry type="jdk" jdkName="Python 3.13 (node-exporter)" jdkType="Python SDK" />
+    <orderEntry type="sourceFolder" forTests="false" />
+  </component>
+  <component name="TemplatesService">
+    <option name="TEMPLATE_FOLDERS">
+      <list>
+        <option value="$MODULE_DIR$/templates" />
+      </list>
+    </option>
+  </component>
+</module>

node-exporter/.idea/vcs.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="VcsDirectoryMappings">
+    <mapping directory="$PROJECT_DIR$/.." vcs="Git" />
+  </component>
+</project>

node-exporter/Makefile

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+install:
+	sudo dnf install ansible
+	ansible-galaxy collection install community.general
+	ansible-galaxy collection install containers.podman
+	ansible-galaxy collection install ansible.posix
+list-hosts:
+	ansible-inventory -i inventory.ini --list
+run:
+	ansible-playbook -i inventory.ini playbook.yaml --ask-become-pass

node-exporter/inventory.ini

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+[nuculabs]
+my-server ansible_user=ansible
+
+[local]
+localhost

node-exporter/playbook.yaml

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+- name: Install Prometheus Node Exporter
+  hosts: nuculabs
+  become: true
+  become_method: sudo
+  vars_files:
+    - variables.yaml
+  tasks:
+    - name: Setup Container
+      block:
+        - name: Ensure Podman is installed
+          ansible.builtin.package:
+            name: podman
+            state: present
+        - name: Pull image
+          containers.podman.podman_image:
+            name: "{{ node_exporter.container_image }}"
+            state: present
+        - name: "Copy container"
+          ansible.builtin.template:
+            src: ./templates/container/node_exporter.container.j2
+            dest: /etc/containers/systemd/node_exporter.container
+            mode: "0644"
+        - name: Reload systemd
+          ansible.builtin.command:
+            cmd: systemctl daemon-reload
+        - name: Stop service
+          ansible.builtin.systemd_service:
+            name: node_exporter.service
+            state: stopped
+            enabled: true
+        - name: Enable service
+          ansible.builtin.systemd_service:
+            name: node_exporter.service
+            state: started
+            enabled: true
+    - name: Setup firewall
+      block:
+        - name: Create firewalld service
+          ansible.builtin.template:
+            src: ./templates/firewall/node_exporter.xml.j2
+            dest: /etc/firewalld/services/node_exporter.xml
+            mode: "0644"
+        - name: Reload firewalld
+          ansible.builtin.command:
+            argv:
+              - firewall-cmd
+              - --reload
+        - name: Enable firewalld service
+          ansible.posix.firewalld:
+            service: node_exporter
+            state: enabled
+            permanent: true
+            immediate: true
+            offline: true
+      when: setup_firewall

node-exporter/readme.md

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+# Node Exporter
+
+![grafana dashboard](./img.png)
+
+This playbook allows you to install and run the prometheus node exporter in Podman.
+
+Using the node exporter allows export metrics from your server, have a Prometheus server scrape them and
+create beautiful dashboard in Grafana.
+
+It was tested on Fedora 41 & Fedora Server.
+
+References:
+
+- https://grafana.com/grafana/dashboards/1860-node-exporter-full/
+- https://hub.docker.com/r/bitnami/prometheus
+- 

node-exporter/templates/container/node_exporter.container.j2

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+[Unit]
+Description=node_exporter
+
+[Container]
+Image={{ node_exporter.container_image }}
+AutoUpdate=registry
+Network=host
+AddCapability=SYS_TIME
+Volume=/proc:/host/proc:ro
+Volume=/sys:/host/sys:ro
+Volume=/:/rootfs:ro,rslave
+Exec=--path.procfs="/host/proc" --path.sysfs="/host/sys" --collector.filesystem.ignored-mount-points="^/(sys|proc|dev|host|etc)($|/)" --web.listen-address="0.0.0.0:{{ node_exporter.port }}"
+
+[Service]
+# Inform systemd of additional exit status
+SuccessExitStatus=0 143
+
+[Install]
+# Start by default on boot
+WantedBy=default.target

node-exporter/templates/firewall/node_exporter.xml.j2

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+<service>
+  <short>Prometheus Node Exporter</short>
+  <description>The prometheus metrics node exporter.</description>
+  <port protocol="tcp" port="{{ node_exporter.port }}" />
+</service>

node-exporter/variables.yaml

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+setup_firewall: true
+node_exporter:
+  container_image: "docker.io/bitnami/node-exporter:latest"
+  port: 9100