nixos-servers/nixos-modules/monitoring/default.nix

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{ lib, config, machines, ... }:
let
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cfg = config.lab.monitoring;
in
{
options = {
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lab.monitoring = {
enable = lib.mkOption {
default = true;
type = lib.types.bool;
};
server.enable = lib.mkOption {
default = false;
type = lib.types.bool;
};
};
};
config = lib.mkIf cfg.enable {
networking.firewall.allowedTCPPorts = [ config.services.prometheus.exporters.node.port ]
++ lib.lists.optionals cfg.server.enable [ 80 ];
services.prometheus = {
enable = cfg.server.enable;
webExternalUrl = "/prometheus";
exporters = {
node = {
enable = true;
};
};
scrapeConfigs = lib.mkIf cfg.server.enable (
lib.attrsets.mapAttrsToList
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(name: machine: {
job_name = name;
static_configs = [{
targets = [ "${name}.dmz:${toString config.services.prometheus.exporters.node.port}" ];
}];
})
machines
);
};
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services.nginx = lib.mkIf cfg.server.enable {
enable = true;
virtualHosts."${config.networking.fqdn}" = {
locations."/prometheus/" = {
proxyPass = "http://127.0.0.1:${toString config.services.prometheus.port}";
recommendedProxySettings = true;
};
};
};
};
}