remote-blackbox: Add group

The _remote-blackbox_ group defines a system that runs
_blackbox-exporter_ and _vmagent_ in a remote (cloud) location.  This
system will monitor our public web sites.  This will give a better idea
of their availability from the perspective of a user on the Internet,
which can be by factors that are necessarily visible from within the
network.

group_vars/remote-blackbox.yml

@@ -0,0 +1,51 @@
+blackbox_modules:
+  http:
+    http:
+      headers:
+        Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8
+        Accept-Charset: utf-8
+        Accept-Language: en-US
+      method: GET
+    prober: http
+    timeout: 5s
+
+vmagent_remotewrite_url: https://metrics.pyrocufflink.blue/insert/1/prometheus/api/v1/write
+
+vmagent_scrape_configs:
+- job_name: cloud-vmagent
+  static_configs:
+  - targets:
+    - localhost:8429
+
+- job_name: blackbox-metrics
+  static_configs:
+  - targets:
+    - localhost:9115
+
+- job_name: websites
+  scrape_interval: 4m
+  metrics_path: /probe
+  params:
+    module:
+    - http
+  static_configs:
+  - targets:
+    - https://dustin.hatch.name/
+    - https://darkchestofwonders.us/
+    - http://nratonpass.com/
+    - http://pyrocufflink.net/
+    - http://ebonfire.com/
+    - http://chmod777.sh/
+    - https://nextcloud.pyrocufflink.net/index.php
+    - https://bitwarden.pyrocufflink.net/
+    - https://git.pyrocufflink.net/
+    - https://tabitha.biz/
+    - https://dustinandtabitha.com/
+    - https://hatchlearningcenter.org/
+  relabel_configs:
+  - source_labels: [__address__]
+    target_label: __param_target
+  - source_labels: [__param_target]
+    target_label: instance
+  - target_label: __address__
+    replacement: localhost:9115

hosts

@@ -8,6 +8,9 @@ file0.pyrocufflink.blue
 [bitwarden_rs]
 bw0.pyrocufflink.blue
 
+[blackbox-exporter:children]
+remote-blackbox
+
 [btop]
 chromie.pyrocufflink.blue
 
@@ -211,6 +214,9 @@ smtp1.pyrocufflink.blue
 vmhost0.pyrocufflink.blue
 vmhost1.pyrocufflink.blue
 
+[vmagent:children]
+remote-blackbox
+
 [wheelhost]
 file0.pyrocufflink.blue