add snmp exporter from fabbs

templates/node-scraper.j2

@@ -55,6 +55,41 @@
 {% endfor %}
 {% endif %}
 
+{% if prometheus_agent.scrapers[item].snmp|d(False) and prometheus_agent.agents.snmp.enable %}
+{% for j in prometheus_agent.agents.snmp.jobs %}
+{% set job=prometheus_agent.agents.snmp.jobs[j] %}
+- job_name: "prometheus-agent - snmp - {{ j }} : {{ inventory_hostname }}"
+  scheme: https
+  metrics_path: /snmp
+  static_configs:
+    - targets:
+{% for target in job.targets %}
+      - {{ target }}
+{% endfor %}
+      labels: {{ merged_prometheus_labels|combine(job.labels|d({}))|to_json }}
+{% for i in ['scrape_timeout', 'scrape_interval'] if (prometheus_agent|combine(prometheus_agent.agents.snmp)|combine(job))[i] %}
+  {{ i }}: {{ (prometheus_agent|combine(job))[i] }}
+{% endfor %}
+  tls_config:
+    ca_file: /etc/prometheus/targetcerts/{{ inventory_hostname }}.crt
+    cert_file: /etc/ssl/prometheus_scraper.crt
+    key_file: /etc/ssl/private/prometheus_scraper.key
+  params:
+    module: [{{ job.module }}]
+  relabel_configs:
+  - source_labels: [__address__]
+    target_label: __param_target
+  - source_labels: [__param_target]
+    target_label: instance
+  - replacement: 'snmp'
+    target_label: job
+  - replacement: '{{ job.module }}'
+    target_label: module
+  - target_label: __address__
+    replacement: {{ inventory_hostname }}:{{ prometheus_agent.scrapers[item].snmp }}
+{% endfor %}
+{% endif %}
+
 {% for j in prometheus_agent.scrapers[item].proxy|d({}) %}
 - job_name: "prometheus-agent - proxy - {{ j }} : {{ inventory_hostname }}"
   scheme: https

templates/stunnel-client.conf.j2

@@ -39,6 +39,19 @@ verifyPeer  = yes
 CAfile      = /etc/ssl/scraper_{{ i }}.crt
 {% endfor %}
 
+{% for i in prometheus_agent.scrapers if "snmp" in prometheus_agent.scrapers[i] and prometheus_agent.agents.snmp.enable %}
+; snmp
+[scraper {{ i }} snmp]
+client      = no
+requireCert = yes
+accept      = :::{{ prometheus_agent.scrapers[i].snmp }}
+connect     = {{ prometheus_agent.agents.snmp.args['web.listen-address']|replace('[', '')|replace(']', '') }}
+cert        = /etc/ssl/prometheus_agent.crt
+key         = /etc/ssl/private/prometheus_agent.key
+verifyPeer  = yes
+CAfile      = /etc/ssl/scraper_{{ i }}.crt
+{% endfor %}
+
 ; proxy
 {% for i in prometheus_agent.scrapers if "proxy" in prometheus_agent.scrapers[i] %}
 {% for j in prometheus_agent.scrapers[i].proxy|d({}) %}