alertmanager: implement HA clustering support

Changed files
+11
nixos
modules
services
monitoring
prometheus
+11
nixos/modules/services/monitoring/prometheus/alertmanager.nix
···
"--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)
···
'';
};
+
clusterPeers = mkOption {
+
type = types.listOf types.str;
+
default = [];
+
description = ''
+
Initial peers for HA cluster.
+
'';
+
};
+
extraFlags = mkOption {
type = types.listOf types.str;
default = [];
···
'';
serviceConfig = {
Restart = "always";
+
StateDirectory = "alertmanager";
DynamicUser = true; # implies PrivateTmp
EnvironmentFile = lib.mkIf (cfg.environmentFile != null) cfg.environmentFile;
WorkingDirectory = "/tmp";