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feat: define global monitoring for each service and automatically configure telegraf based on it

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oddlama 2024-07-14 14:11:53 +02:00
parent 79e1e782c4
commit e35daee76d
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GPG key ID: 14EFE510775FE39A
23 changed files with 403 additions and 83 deletions
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90
modules/telegraf.nix
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@ -1,5 +1,6 @@
{
config,
globals,
lib,
minimal,
nodes,
@ -8,11 +9,18 @@
}: let
inherit
(lib)
concatLists
elem
flip
forEach
mapAttrsToList
mkAfter
mkEnableOption
mkIf
mkOption
optional
optionalAttrs
optionals
types
;
@ -36,6 +44,18 @@ in {
description = "Additional secrets to replace in pre-start. The attr name will be searched and replaced in the config with the value read from the given file.";
};
globalMonitoring = {
enable = mkEnableOption "monitor the global infrastructure from this node.";
availableNetworks = mkOption {
type = types.listOf types.str;
example = ["internet"];
description = ''
The networks that can be reached from this node.
Only global entries with a matching network will be monitored from here.
'';
};
};
influxdb2 = {
domain = mkOption {
type = types.str;
@ -165,8 +185,6 @@ in {
};
temp = {};
wireguard = {};
# http_response = { urls = [ "http://localhost/" ]; };
# ping = { urls = [ "9.9.9.9" ]; };
}
// optionalAttrs config.services.smartd.enable {
sensors = {};
@ -182,6 +200,74 @@ in {
}
// optionalAttrs (config.networking.wireless.enable || config.networking.wireless.iwd.enable) {
wireless = {};
}
// optionalAttrs cfg.globalMonitoring.enable {
ping = concatLists (flip mapAttrsToList globals.monitoring.ping (
name: pingCfg:
optionals (elem pingCfg.network cfg.globalMonitoring.availableNetworks) (
concatLists (forEach ["hostv4" "hostv6"] (
attr:
optional (pingCfg.${attr} != null) {
method = "native";
urls = [pingCfg.${attr}];
ipv4 = attr == "hostv4";
ipv6 = attr == "hostv6";
tags = {
inherit name;
inherit (pingCfg) location network;
ip_version =
if attr == "hostv4"
then "v4"
else "v6";
};
fieldpass = [
"percent_packet_loss"
"average_response_ms"
];
}
))
)
));
http_response = concatLists (flip mapAttrsToList globals.monitoring.http (
name: httpCfg:
optional (elem httpCfg.network cfg.globalMonitoring.availableNetworks) {
urls = [httpCfg.url];
method = "GET";
response_status_code = httpCfg.expectedStatus;
response_string_match = mkIf (httpCfg.expectedBodyRegex != null) httpCfg.expectedBodyRegex;
tags = {
inherit name;
inherit (httpCfg) location network;
};
}
));
dns_query = concatLists (flip mapAttrsToList globals.monitoring.dns (
name: dnsCfg:
optional (elem dnsCfg.network cfg.globalMonitoring.availableNetworks) {
servers = [dnsCfg.server];
domains = [dnsCfg.domain];
record_type = dnsCfg.record-type;
tags = {
inherit name;
inherit (dnsCfg) location network;
};
}
));
net_response = concatLists (flip mapAttrsToList globals.monitoring.tcp (
name: tcpCfg:
optional (elem tcpCfg.network cfg.globalMonitoring.availableNetworks) {
address = "${tcpCfg.host}:${toString tcpCfg.port}";
protocol = "tcp";
tags = {
inherit name;
inherit (tcpCfg) location network;
};
fieldexclude = ["result_type" "string_found"];
}
));
};
};
};