Add the node_exporter role

roles/node_exporter/molecule/default/converge.yml

@@ -0,0 +1,6 @@
+---
+- name: Converge
+  hosts: all
+  roles:
+    - role: genlab.common.node_exporter
+      node_exporter_ver: "1.10.1"

roles/node_exporter/molecule/default/molecule.yml

@@ -0,0 +1,27 @@
+---
+dependency:
+  name: galaxy
+
+driver:
+  name: docker
+
+platforms:
+  - name: ubuntu
+    image: geerlingguy/docker-${MOLECULE_DISTRO:-ubuntu2404}-ansible:latest
+    pre_build_image: true
+    command: ${MOLECULE_DOCKER_COMMAND:-""}
+    volumes:
+      - /sys/fs/cgroup:/sys/fs/cgroup:rw
+    cgroupns_mode: host
+    privileged: true
+
+provisioner:
+  name: ansible
+
+verifier:
+  name: ansible
+
+lint: |
+  set -e
+  yamllint .
+  ansible-lint .

roles/node_exporter/molecule/default/verify.yml

@@ -0,0 +1,15 @@
+---
+- name: Verify
+  hosts: all
+  gather_facts: false
+  any_errors_fatal: true
+  tasks:
+
+    - name: "Sanity check the node exporter"
+      retries: 5
+      delay: 1
+      register: result
+      failed_when: '"node_exporter_build_info" not in result.content'
+      ansible.builtin.uri:
+        url: "http://localhost:9100/metrics"
+        return_content: true