From cfcad88572c0b6eb7c2083ad073ce8a489bbaef5 Mon Sep 17 00:00:00 2001
From: Florian Sesser <florian@private.storage>
Date: Thu, 8 Sep 2022 10:52:15 +0000
Subject: [PATCH] Prometheus should keep metrics as long as Loki keeps logs
... which is both governed by our retention policy.
---
nixos/modules/monitoring/server/prometheus.nix | 2 ++
1 file changed, 2 insertions(+)
diff --git a/nixos/modules/monitoring/server/prometheus.nix b/nixos/modules/monitoring/server/prometheus.nix
index 2a78dd3e..fac29c29 100644
--- a/nixos/modules/monitoring/server/prometheus.nix
+++ b/nixos/modules/monitoring/server/prometheus.nix
@@ -13,6 +13,7 @@ let
regex = "^(.*)(?:\\.monitoringvpn):\\d+$";
target_label = "instance";
};
+ logRetention = toString(config.services.private-storage.monitoring.policy.logRetentionSeconds) + "s";
in {
options.services.private-storage.monitoring.prometheus = {
@@ -44,6 +45,7 @@ in {
services.prometheus = {
enable = true;
# port = 9090; # Option only in recent (20.09?) nixpkgs, 9090 default
+ retentionTime = logRetention;
scrapeConfigs = [
{
job_name = "node-exporters";
--
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