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abstract grafana in prometheus config

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This commit is contained in:
Noah Masur 2023-07-05 14:19:54 -06:00
parent 4c4e250fa1
commit ee58f7a4ee
1 changed files with 15 additions and 14 deletions
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29
modules/nixos/services/prometheus.nix
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@ -6,10 +6,13 @@
default = null;
};
# If hosting Grafana, host local Prometheus and listen for inbound jobs.
# If not hosting Grafana, send remote Prometheus writes to primary host
config = let
config = lib.mkIf config.services.prometheus.enable {
# If hosting Grafana, host local Prometheus and listen for inbound jobs. If
# not hosting Grafana, send remote Prometheus writes to primary host.
isServer = config.services.grafana.enable;
in lib.mkIf config.services.prometheus.enable {
services.prometheus = {
exporters.node.enable = true;
@ -17,10 +20,9 @@
job_name = "local";
static_configs = [{ targets = [ "127.0.0.1:9100" ]; }];
}];
webExternalUrl = lib.mkIf config.services.grafana.enable
"https://${config.prometheusServer}";
webExternalUrl = lib.mkIf isServer "https://${config.prometheusServer}";
# Web config file: https://prometheus.io/docs/prometheus/latest/configuration/https/
webConfigFile = lib.mkIf config.services.grafana.enable
webConfigFile = lib.mkIf isServer
((pkgs.formats.yaml { }).generate "webconfig.yml" {
basic_auth_users = {
# Generate password: htpasswd -nBC 10 "" | tr -d ':\n'
@ -29,7 +31,7 @@
"$2y$10$r7FWHLHTGPAY312PdhkPEuvb05aGn9Nk1IO7qtUUUjmaDl35l6sLa";
};
});
remoteWrite = lib.mkIf (!config.services.grafana.enable) [{
remoteWrite = lib.mkIf (!isServer) [{
name = config.networking.hostName;
url = "https://${config.prometheusServer}";
basic_auth = {
@ -41,20 +43,19 @@
};
# Create credentials file for remote Prometheus push
secrets.prometheus = lib.mkIf (!config.services.grafana.enable) {
secrets.prometheus = lib.mkIf (!isServer) {
source = ../../../private/prometheus.age;
dest = "${config.secretsDirectory}/prometheus";
owner = "prometheus";
group = "prometheus";
permissions = "0440";
};
systemd.services.prometheus-secret =
lib.mkIf (!config.services.grafana.enable) {
requiredBy = [ "prometheus.service" ];
before = [ "prometheus.service" ];
};
systemd.services.prometheus-secret = lib.mkIf (!isServer) {
requiredBy = [ "prometheus.service" ];
before = [ "prometheus.service" ];
};
caddy.routes = lib.mkIf config.services.grafana.enable [{
caddy.routes = lib.mkIf isServer [{
match = [{ host = [ config.prometheusServer ]; }];
handle = [{
handler = "reverse_proxy";