From e484ca3d9b34bc27cd7e3611b6d3d483bd07c000 Mon Sep 17 00:00:00 2001
From: Robin Gloster <mail@glob.in>
Date: Mon, 13 Apr 2020 18:39:51 +0200
Subject: [PATCH] alertmanager: implement HA clustering support
---
.../services/monitoring/prometheus/alertmanager.nix | 11 +++++++++++
1 file changed, 11 insertions(+)
diff --git a/nixos/modules/services/monitoring/prometheus/alertmanager.nix b/nixos/modules/services/monitoring/prometheus/alertmanager.nix
index 69e3dcf1408..1b02ebf3704 100644
--- a/nixos/modules/services/monitoring/prometheus/alertmanager.nix
+++ b/nixos/modules/services/monitoring/prometheus/alertmanager.nix
@@ -21,6 +21,8 @@ let
"--config.file /tmp/alert-manager-substituted.yaml"
"--web.listen-address ${cfg.listenAddress}:${toString cfg.port}"
"--log.level ${cfg.logLevel}"
+ "--storage.path /var/lib/alertmanager"
+ (toString (map (peer: "--cluster.peer ${peer}:9094") cfg.clusterPeers))
] ++ (optional (cfg.webExternalUrl != null)
"--web.external-url ${cfg.webExternalUrl}"
) ++ (optional (cfg.logFormat != null)
@@ -120,6 +122,14 @@ in {
'';
};
+ clusterPeers = mkOption {
+ type = types.listOf types.str;
+ default = [];
+ description = ''
+ Initial peers for HA cluster.
+ '';
+ };
+
extraFlags = mkOption {
type = types.listOf types.str;
default = [];
@@ -162,6 +172,7 @@ in {
'';
serviceConfig = {
Restart = "always";
+ StateDirectory = "alertmanager";
DynamicUser = true; # implies PrivateTmp
EnvironmentFile = lib.mkIf (cfg.environmentFile != null) cfg.environmentFile;
WorkingDirectory = "/tmp";