Some tweaks, set scrape interval to 20s and removed deprecated unswcanberraspace.com endpoints.

blackbox-exporter.yml

@@ -2,7 +2,8 @@ modules:
   http_2xx:
     prober: http
     http:
-        preferred_ip_protocol: "ip4"
+      preferred_ip_protocol: "ip4"
+      method: GET
   http_post_2xx:
     prober: http
     http:

prometheus.yml

@@ -34,6 +34,7 @@ scrape_configs:
     - targets: ['10.0.0.137:10091']
 
   - job_name: 'blackbox'
+    scrape_interval: 20s
     metrics_path: /probe
     params:
       module: [http_2xx]  # Look for a HTTP 200 response.
@@ -51,8 +52,6 @@ scrape_configs:
         - https://bitbucket.unswcanberraspace.com
         - https://jira.unswcanberraspace.com
         - https://crowd.unswcanberraspace.com
-        - https://rcode.unswcanberraspace.com
-        - https://survey.unswcanberraspace.com
     relabel_configs:
       - source_labels: [__address__]
         target_label: __param_target