From 5c0a2e8c60660b341843883988d28f49b65d795e Mon Sep 17 00:00:00 2001
From: Robin Gloster <mail@glob.in>
Date: Sat, 21 Sep 2019 14:50:08 +0200
Subject: nixos/prometheus: add retentionTime

---
 nixos/modules/services/monitoring/prometheus/default.nix | 13 +++++++++++--
 1 file changed, 11 insertions(+), 2 deletions(-)

(limited to 'nixos/modules/services/monitoring/prometheus/default.nix')

diff --git a/nixos/modules/services/monitoring/prometheus/default.nix b/nixos/modules/services/monitoring/prometheus/default.nix
index d7e06484b69..bc23606edf1 100644
--- a/nixos/modules/services/monitoring/prometheus/default.nix
+++ b/nixos/modules/services/monitoring/prometheus/default.nix
@@ -49,8 +49,8 @@ let
     "--web.listen-address=${cfg.listenAddress}:${builtins.toString cfg.port}"
     "--alertmanager.notification-queue-capacity=${toString cfg.alertmanagerNotificationQueueCapacity}"
     "--alertmanager.timeout=${toString cfg.alertmanagerTimeout}s"
-  ] ++
-  optional (cfg.webExternalUrl != null) "--web.external-url=${cfg.webExternalUrl}";
+  ] ++ optional (cfg.webExternalUrl != null) "--web.external-url=${cfg.webExternalUrl}"
+    ++ optional (cfg.retentionTime != null)  "--storage.tsdb.retention.time=${cfg.retentionTime}";
 
   filterValidPrometheus = filterAttrsListRecursive (n: v: !(n == "_module" || v == null));
   filterAttrsListRecursive = pred: x:
@@ -624,6 +624,15 @@ in {
         errors, despite a correct configuration.
       '';
     };
+
+    retentionTime = mkOption {
+      type = types.nullOr types.str;
+      default = null;
+      example = "15d";
+      description = ''
+        How long to retain samples in storage.
+      '';
+    };
   };
 
   config = mkIf cfg.enable {
-- 
cgit 1.4.1