add the ansible playbooks for the monitoring stack

ansible/roles/snmp_exporter/tasks/main.yml

@@ -0,0 +1,71 @@
+---
+- name: Create SNMP exporter directory
+  ansible.builtin.file:
+    path: /etc/snmp_exporter
+    state: directory
+    owner: monitoring
+    group: monitoring
+    mode: "0755"
+
+- name: Check if SNMP exporter is installed
+  ansible.builtin.stat:
+    path: /usr/local/bin/snmp_exporter
+  register: snmp_exporter_binary
+
+- name: Download SNMP exporter
+  ansible.builtin.get_url:
+    url: "https://github.com/prometheus/snmp_exporter/releases/download/v{{ snmp_exporter_version }}/snmp_exporter-{{ snmp_exporter_version }}.linux-{{ go_arch }}.tar.gz"
+    dest: "/tmp/snmp_exporter-{{ snmp_exporter_version }}.tar.gz"
+    mode: "0644"
+  when: not snmp_exporter_binary.stat.exists
+
+- name: Extract SNMP exporter
+  ansible.builtin.unarchive:
+    src: "/tmp/snmp_exporter-{{ snmp_exporter_version }}.tar.gz"
+    dest: /tmp
+    remote_src: true
+  when: not snmp_exporter_binary.stat.exists
+
+- name: Install SNMP exporter binary
+  ansible.builtin.copy:
+    src: "/tmp/snmp_exporter-{{ snmp_exporter_version }}.linux-{{ go_arch }}/snmp_exporter"
+    dest: /usr/local/bin/snmp_exporter
+    mode: "0755"
+    remote_src: true
+  notify: Restart snmp_exporter
+  when: not snmp_exporter_binary.stat.exists
+
+- name: Install default SNMP exporter config
+  ansible.builtin.copy:
+    src: "/tmp/snmp_exporter-{{ snmp_exporter_version }}.linux-{{ go_arch }}/snmp.yml"
+    dest: /etc/snmp_exporter/snmp.yml
+    owner: monitoring
+    group: monitoring
+    mode: "0644"
+    remote_src: true
+  notify: Restart snmp_exporter
+  when: not snmp_exporter_binary.stat.exists
+
+- name: Deploy SNMP exporter systemd service
+  ansible.builtin.template:
+    src: snmp_exporter.service.j2
+    dest: /etc/systemd/system/snmp_exporter.service
+    mode: "0644"
+  notify:
+    - Reload systemd
+    - Restart snmp_exporter
+
+- name: Enable and start SNMP exporter
+  ansible.builtin.systemd:
+    name: snmp_exporter
+    enabled: true
+    state: started
+    daemon_reload: true
+
+- name: Clean up downloaded files
+  ansible.builtin.file:
+    path: "{{ item }}"
+    state: absent
+  loop:
+    - "/tmp/snmp_exporter-{{ snmp_exporter_version }}.tar.gz"
+    - "/tmp/snmp_exporter-{{ snmp_exporter_version }}.linux-{{ go_arch }}"