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grafana: Avoid dashboard patching by using victoriametrics's prometheus compatibility

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SebastianStork 2025-09-20 21:49:29 +02:00
parent 14956c6712
commit 8a45686da7
3 changed files with 34 additions and 41 deletions
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1
hosts/srv-monitor/default.nix
View file

@ -58,6 +58,7 @@
enable = true;
domain = "grafana.${tailscaleDomain}";
datasources = {
prometheus.enable = true;
victoriametrics.enable = true;
victorialogs.enable = true;
};

63
modules/system/services/grafana/default.nix → modules/system/services/grafana.nix
View file

@ -19,6 +19,13 @@ in
default = 3000;
};
datasources = {
prometheus = {
enable = lib.mkEnableOption "";
url = lib.mkOption {
type = lib.types.nonEmptyStr;
default = "https://metrics.${config.custom.services.tailscale.domain}";
};
};
victoriametrics = {
enable = lib.mkEnableOption "";
url = lib.mkOption {
@ -69,34 +76,36 @@ in
dashboards.settings = {
# TODO: Uncomment when upgrading to 25.11
# prune = true;
providers = [
{
name = "Dashboards";
disableDeletion = true;
options = {
path = "/etc/grafana-dashboards";
foldersFromFilesStructure = true;
};
}
];
providers = lib.singleton {
name = "Dashboards";
options.path = "/etc/grafana-dashboards";
};
};
datasources.settings = {
# TODO: Uncomment when upgrading to 25.11
# prune = true;
datasources =
(lib.optional cfg.datasources.victoriametrics.enable {
(lib.optional cfg.datasources.prometheus.enable {
name = "Prometheus";
type = "prometheus";
inherit (cfg.datasources.prometheus) url;
isDefault = true;
jsonData = {
prometheusType = "Prometheus";
prometheusVersion = "2.50.0";
};
})
++ (lib.optional cfg.datasources.victoriametrics.enable {
name = "VictoriaMetrics";
type = "victoriametrics-metrics-datasource";
access = "proxy";
url = "https://metrics.${config.custom.services.tailscale.domain}";
isDefault = true;
inherit (cfg.datasources.victoriametrics) url;
isDefault = false;
})
++ (lib.optional cfg.datasources.victorialogs.enable {
name = "VictoriaLogs";
type = "victoriametrics-logs-datasource";
access = "proxy";
url = "https://logs.${config.custom.services.tailscale.domain}";
inherit (cfg.datasources.victorialogs) url;
isDefault = false;
});
};
@ -108,19 +117,13 @@ in
++ (lib.optional cfg.datasources.victorialogs.enable victoriametrics-logs-datasource);
};
environment.etc."grafana-dashboards/node-exporter-full.json".source =
lib.mkIf cfg.dashboards.node-exporter-full.enable
(
pkgs.fetchurl {
name = "node-exporter-full.json";
url = "https://grafana.com/api/dashboards/1860/revisions/41/download";
hash = "sha256-A6/4QjcMzkry68fSPwNdHq8i6SGwaKwZXVKDZB5h71A=";
downloadToTemp = true;
postFetch = ''
patch $downloadedFile < ${./patches/node-exporter-full.patch}
mv $downloadedFile $out
'';
}
);
environment.etc."grafana-dashboards/node-exporter-full.json" = {
enable = cfg.dashboards.node-exporter-full.enable;
source = pkgs.fetchurl {
name = "node-exporter-full.json";
url = "https://grafana.com/api/dashboards/1860/revisions/41/download";
hash = "sha256-EywgxEayjwNIGDvSmA/S56Ld49qrTSbIYFpeEXBJlTs=";
};
};
};
}

11
modules/system/services/grafana/patches/node-exporter-full.patch
View file

@ -1,11 +0,0 @@
--- v1.json 2025-06-27 15:13:02.187282992 -0600
+++ v2.json 2025-06-27 15:12:49.094889325 -0600
@@ -16015,7 +16015,7 @@
"label": "Datasource",
"name": "DS_PROMETHEUS",
"options": [],
- "query": "prometheus",
+ "query": "victoriametrics-metrics-datasource",
"refresh": 1,
"regex": "",
"type": "datasource"