add snmp exporter from fabbs

tasks/main.yml

@@ -38,6 +38,61 @@
       dest: /etc/prometheus/blackbox.yml
       content: "{{ prometheus_agent.agents.blackbox.config|to_nice_yaml(indent=2) }}"
 
+- name: handle snmp exporter
+  when: prometheus_agent.agents.snmp.enable
+  block:
+  - name: install prometheus-snmp-exporter
+    apt:
+      name: prometheus-snmp-exporter
+  - name: install snmp downloader
+    apt:
+      name: snmp-mibs-downloader
+    register: mibs_downloader_installed
+  - name: create folder for MIBs
+    file:
+      dest: '{{prometheus_agent.agents.snmp.mib_path }}'
+      state: directory
+  - name: download MIBs
+    loop: '{{ prometheus_agent.agents.snmp.mibs }}'
+    when: "'url' in item"
+    get_url:
+      dest: '{{prometheus_agent.agents.snmp.mib_path }}'
+      url: '{{ item.url }}'
+    #async: 600
+    #poll: 0.1
+    register: mibs_downloaded
+  - name: copy MIBs
+    loop: '{{ prometheus_agent.agents.snmp.mibs }}'
+    when: "'file' in item"
+    copy:
+      dest: '{{prometheus_agent.agents.snmp.mib_path }}'
+      src: '{{ item.file }}'
+    #async: 600
+    #poll: 0.1
+    register: mibs_copied
+  - name: create snmp directory
+    file:
+      dest: /etc/prometheus/snmp
+      state: directory
+      mode: 0755
+  - name: generate generator configuration
+    copy:
+      dest: /etc/prometheus/snmp/generator.yml
+      content: '{{ prometheus_agent.agents.snmp.config|to_nice_yaml }}'
+      mode: 0644
+    register: snmp_exporter_generator
+  - name: generate SNMP exporter configuration
+    when: snmp_exporter_generator.changed or mibs_downloader_installed.changed or mibs_downloaded.changed or mibs_copied.changed
+    shell: prometheus-snmp-generator generate -o /etc/prometheus/snmp.yml
+    args:
+      chdir: /etc/prometheus/snmp
+    notify: restart snmp exporter
+  - name: enable and start snmp exporter
+    service:
+      name: prometheus-snmp-exporter
+      state: started
+      enabled: yes
+
 - name: manage tls
   when: prometheus_agent.tls.manage
   block: