feat(osfamilymap.yaml): add Gentoo support

Signed-off-by: Mark Gomersbach <markgomersbach@gmail.com>

prometheus/config/args/install.sls

@@ -109,7 +109,7 @@ prometheus-config-args-{{ name }}-file-managed:
   file.managed:
     - name: {{ args_file }}
     - contents: |
-        ARGS="{{ concat_args(args) }}"
+        {{ prometheus.dir.args_setting }}="{{ concat_args(args) }}"
     - watch_in:
       - service: prometheus-service-running-{{ name }}-service-running
                 {%- if prometheus.dir.args %}

prometheus/defaults.yaml

@@ -20,6 +20,7 @@ prometheus:
     etc: /etc/prometheus
     var: /var/lib/prometheus
     args: /etc/default
+    args_setting: ARGS
     service: /usr/lib/systemd/system
     textfile_collectors: /opt/prometheus/textfile_collectors
 

prometheus/osfamilymap.yaml

@@ -35,7 +35,33 @@ RedHat:
 
 Suse: {}
 
-Gentoo: {}
+Gentoo:
+  dir:
+    args: false
+    args_setting: command_args
+    textfile_collectors: /var/lib/node_exporter/
+  pkg:
+    prometheus:
+      name: app-metrics/prometheus
+      args_file: /etc/conf.d/prometheus
+    node_exporter:
+      name: app-metrics/node_exporter
+      args_file: /etc/conf.d/node_exporter
+    alertmanager:
+      name: app-metrics/alertmanager
+      args_file: /etc/conf.d/alertmanager
+  service:
+    node_exporter:
+      args:
+        collector.textfile.directory: /var/lib/node_exporter
+    alertmanager:
+      args:
+        config.file: /etc/prometheus/alertmanager.yml
+        storage.path: /var/lib/alertmanager
+    prometheus:
+      args:
+        config.file: /etc/prometheus/prometheus.yml
+        storage.tsdb.path: /var/lib/prometheus/data
 
 Arch: {}