nixos/applications/prometheus.nix

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{
nodes,
lib,
config,
...
}:
with lib; let
name = "prometheus";
cfg = config.services.skynet."${name}";
in {
imports = [];
options.services.skynet."${name}" = {
server = {
enable = mkEnableOption "Prometheus Server";
host = {
ip = mkOption {
type = types.str;
};
name = mkOption {
type = types.str;
};
};
port = mkOption {
type = types.port;
default = 9001;
};
other_nodes = mkOption {
type = types.listOf types.str;
description = ''
To add other nodes outside of nix, specify ip and port that server should listen to here
'';
};
};
port_collecter = mkOption {
type = types.port;
default = 9002;
};
};
config =
{
services.prometheus.exporters.node = {
enable = true;
# most collectors are on by default see docs for more options
enabledCollectors = ["systemd"];
port = cfg.port_collecter;
};
}
// mkIf cfg.server.enable {
services.prometheus = {
enable = true;
port = cfg.server.port;
scrapeConfigs = [
{
job_name = "node_exporter";
static_configs = [
{
targets = (map (hostname: "${hostname}:${cfg.port_collecter}") (lib.attrsets.mapAttrsToList (server: server.deployment.hostname)) nodes) ++ cfg.other_nodes;
}
];
}
];
};
};
}