play with using healthchecks.io (#1)

README.md

@@ -5,3 +5,11 @@ This documents and configures the infrastructure used for the `nix-community` Gi
 ## Usage
 
 `./deploy`
+
+## Hosts
+
+* ![build01](https://healthchecks.io/badge/c9e58e14-c706-4084-959b-17b06fbd124f/QFBOLbO1/build01.svg)
+
+## Services
+
+* buildkite on build01

build01/configuration.nix

@@ -35,6 +35,12 @@
     '';
   };
 
+  services.cron.enable = true;
+  services.cron.systemCronJobs = [
+    # record that this machine is alive
+    "*/5 * * * * root ${pkgs.curl}/bin/curl -sfL https://hc-ping.com/fcf6c029-5b57-44aa-b392-923f3d894dd9"
+  ];
+
   boot.kernelPackages = pkgs.linuxPackages_latest;
   boot.supportedFilesystems = [ "zfs" ];