nixpkgs/nixos/tests/prometheus-exporters.nix

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{ system ? builtins.currentSystem
, config ? {}
, pkgs ? import ../.. { inherit system config; }
}:
let
inherit (import ../lib/testing-python.nix { inherit system pkgs; }) makeTest;
inherit (pkgs.lib) concatStringsSep maintainers mapAttrs mkMerge
removeSuffix replaceChars singleton splitString;
/*
* The attrset `exporterTests` contains one attribute
* for each exporter test. Each of these attributes
* is expected to be an attrset containing:
*
* `exporterConfig`:
* this attribute set contains config for the exporter itself
*
* `exporterTest`
* this attribute set contains test instructions
*
* `metricProvider` (optional)
* this attribute contains additional machine config
*
* Example:
* exporterTests.<exporterName> = {
* exporterConfig = {
* enable = true;
* };
* metricProvider = {
* services.<metricProvider>.enable = true;
* };
* exporterTest = ''
* wait_for_unit("prometheus-<exporterName>-exporter.service")
* wait_for_open_port("1234")
* succeed("curl -sSf 'localhost:1234/metrics'")
* '';
* };
*
* # this would generate the following test config:
*
* nodes.<exporterName> = {
* services.prometheus.<exporterName> = {
* enable = true;
* };
* services.<metricProvider>.enable = true;
* };
*
* testScript = ''
* <exporterName>.start()
* <exporterName>.wait_for_unit("prometheus-<exporterName>-exporter.service")
* <exporterName>.wait_for_open_port("1234")
* <exporterName>.succeed("curl -sSf 'localhost:1234/metrics'")
* <exporterName>.shutdown()
* '';
*/
exporterTests = {
bind = {
exporterConfig = {
enable = true;
};
metricProvider = {
services.bind.enable = true;
services.bind.extraConfig = ''
statistics-channels {
inet 127.0.0.1 port 8053 allow { localhost; };
};
'';
};
exporterTest = ''
wait_for_unit("prometheus-bind-exporter.service")
wait_for_open_port(9119)
succeed(
"curl -sSf http://localhost:9119/metrics | grep -q 'bind_query_recursions_total 0'"
)
'';
};
blackbox = {
exporterConfig = {
enable = true;
configFile = pkgs.writeText "config.yml" (builtins.toJSON {
modules.icmp_v6 = {
prober = "icmp";
icmp.preferred_ip_protocol = "ip6";
};
});
};
exporterTest = ''
wait_for_unit("prometheus-blackbox-exporter.service")
wait_for_open_port(9115)
succeed(
"curl -sSf 'http://localhost:9115/probe?target=localhost&module=icmp_v6' | grep -q 'probe_success 1'"
)
'';
};
collectd = {
exporterConfig = {
enable = true;
extraFlags = [ "--web.collectd-push-path /collectd" ];
};
exporterTest = let postData = replaceChars [ "\n" ] [ "" ] ''
[{
"values":[23],
"dstypes":["gauge"],
"type":"gauge",
"interval":1000,
"host":"testhost",
"plugin":"testplugin",
"time":DATE
}]
''; in ''
wait_for_unit("prometheus-collectd-exporter.service")
wait_for_open_port(9103)
succeed(
'echo \'${postData}\'> /tmp/data.json'
)
succeed('sed -ie "s DATE $(date +%s) " /tmp/data.json')
succeed(
"curl -sSfH 'Content-Type: application/json' -X POST --data @/tmp/data.json localhost:9103/collectd"
)
succeed(
"curl -sSf localhost:9103/metrics | grep -q 'collectd_testplugin_gauge{instance=\"testhost\"} 23'"
)
'';
};
dnsmasq = {
exporterConfig = {
enable = true;
leasesPath = "/var/lib/dnsmasq/dnsmasq.leases";
};
metricProvider = {
services.dnsmasq.enable = true;
};
exporterTest = ''
wait_for_unit("prometheus-dnsmasq-exporter.service")
wait_for_open_port(9153)
succeed("curl -sSf http://localhost:9153/metrics | grep -q 'dnsmasq_leases 0'")
'';
};
dovecot = {
exporterConfig = {
enable = true;
scopes = [ "global" ];
socketPath = "/var/run/dovecot2/old-stats";
user = "root"; # <- don't use user root in production
};
metricProvider = {
services.dovecot2.enable = true;
};
exporterTest = ''
wait_for_unit("prometheus-dovecot-exporter.service")
wait_for_open_port(9166)
succeed(
"curl -sSf http://localhost:9166/metrics | grep -q 'dovecot_up{scope=\"global\"} 1'"
)
'';
};
fritzbox = { # TODO add proper test case
exporterConfig = {
enable = true;
};
exporterTest = ''
wait_for_unit("prometheus-fritzbox-exporter.service")
wait_for_open_port(9133)
succeed(
"curl -sSf http://localhost:9133/metrics | grep -q 'fritzbox_exporter_collect_errors 0'"
)
'';
};
json = {
exporterConfig = {
enable = true;
url = "http://localhost";
configFile = pkgs.writeText "json-exporter-conf.json" (builtins.toJSON [{
name = "json_test_metric";
path = "$.test";
}]);
};
metricProvider = {
systemd.services.prometheus-json-exporter.after = [ "nginx.service" ];
services.nginx = {
enable = true;
virtualHosts.localhost.locations."/".extraConfig = ''
return 200 "{\"test\":1}";
'';
};
};
exporterTest = ''
wait_for_unit("nginx.service")
wait_for_open_port(80)
wait_for_unit("prometheus-json-exporter.service")
wait_for_open_port(7979)
succeed("curl -sSf localhost:7979/metrics | grep -q 'json_test_metric 1'")
'';
};
mail = {
exporterConfig = {
enable = true;
configuration = {
monitoringInterval = "2s";
mailCheckTimeout = "10s";
servers = [ {
name = "testserver";
server = "localhost";
port = 25;
from = "mail-exporter@localhost";
to = "mail-exporter@localhost";
detectionDir = "/var/spool/mail/mail-exporter/new";
} ];
};
};
metricProvider = {
services.postfix.enable = true;
systemd.services.prometheus-mail-exporter = {
after = [ "postfix.service" ];
requires = [ "postfix.service" ];
preStart = ''
mkdir -p -m 0700 mail-exporter/new
'';
serviceConfig = {
ProtectHome = true;
ReadOnlyPaths = "/";
ReadWritePaths = "/var/spool/mail";
WorkingDirectory = "/var/spool/mail";
};
};
users.users.mailexporter.isSystemUser = true;
};
exporterTest = ''
wait_for_unit("postfix.service")
wait_for_unit("prometheus-mail-exporter.service")
wait_for_open_port(9225)
wait_until_succeeds(
"curl -sSf http://localhost:9225/metrics | grep -q 'mail_deliver_success{configname=\"testserver\"} 1'"
)
'';
};
mikrotik = {
exporterConfig = {
enable = true;
extraFlags = [ "-timeout=1s" ];
configuration = {
devices = [
{
name = "router";
address = "192.168.42.48";
user = "prometheus";
password = "shh";
}
];
features = {
bgp = true;
dhcp = true;
dhcpl = true;
dhcpv6 = true;
health = true;
routes = true;
poe = true;
pools = true;
optics = true;
w60g = true;
wlansta = true;
wlanif = true;
monitor = true;
ipsec = true;
};
};
};
exporterTest = ''
wait_for_unit("prometheus-mikrotik-exporter.service")
wait_for_open_port(9436)
succeed(
"curl -sSf http://localhost:9436/metrics | grep -q 'mikrotik_scrape_collector_success{device=\"router\"} 0'"
)
'';
};
nextcloud = {
exporterConfig = {
enable = true;
passwordFile = "/var/nextcloud-pwfile";
url = "http://localhost/negative-space.xml";
};
metricProvider = {
systemd.services.nc-pwfile = let
passfile = (pkgs.writeText "pwfile" "snakeoilpw");
in {
requiredBy = [ "prometheus-nextcloud-exporter.service" ];
before = [ "prometheus-nextcloud-exporter.service" ];
serviceConfig.ExecStart = ''
${pkgs.coreutils}/bin/install -o nextcloud-exporter -m 0400 ${passfile} /var/nextcloud-pwfile
'';
};
services.nginx = {
enable = true;
virtualHosts."localhost" = {
basicAuth.nextcloud-exporter = "snakeoilpw";
locations."/" = {
root = "${pkgs.prometheus-nextcloud-exporter.src}/serverinfo/testdata";
};
};
};
};
exporterTest = ''
wait_for_unit("nginx.service")
wait_for_unit("prometheus-nextcloud-exporter.service")
wait_for_open_port(9205)
succeed("curl -sSf http://localhost:9205/metrics | grep -q 'nextcloud_up 1'")
'';
};
nginx = {
exporterConfig = {
enable = true;
};
metricProvider = {
services.nginx = {
enable = true;
statusPage = true;
virtualHosts."test".extraConfig = "return 204;";
};
};
exporterTest = ''
wait_for_unit("nginx.service")
wait_for_unit("prometheus-nginx-exporter.service")
wait_for_open_port(9113)
succeed("curl -sSf http://localhost:9113/metrics | grep -q 'nginx_up 1'")
'';
};
node = {
exporterConfig = {
enable = true;
};
exporterTest = ''
wait_for_unit("prometheus-node-exporter.service")
wait_for_open_port(9100)
succeed(
"curl -sSf http://localhost:9100/metrics | grep -q 'node_exporter_build_info{.\\+} 1'"
)
'';
};
postfix = {
exporterConfig = {
enable = true;
};
metricProvider = {
services.postfix.enable = true;
};
exporterTest = ''
wait_for_unit("prometheus-postfix-exporter.service")
wait_for_open_port(9154)
succeed(
"curl -sSf http://localhost:9154/metrics | grep -q 'postfix_smtpd_connects_total 0'"
)
'';
};
postgres = {
exporterConfig = {
enable = true;
runAsLocalSuperUser = true;
};
metricProvider = {
services.postgresql.enable = true;
};
exporterTest = ''
wait_for_unit("prometheus-postgres-exporter.service")
wait_for_open_port(9187)
wait_for_unit("postgresql.service")
succeed(
"curl -sSf http://localhost:9187/metrics | grep -q 'pg_exporter_last_scrape_error 0'"
)
succeed("curl -sSf http://localhost:9187/metrics | grep -q 'pg_up 1'")
systemctl("stop postgresql.service")
succeed(
"curl -sSf http://localhost:9187/metrics | grep -qv 'pg_exporter_last_scrape_error 0'"
)
succeed("curl -sSf http://localhost:9187/metrics | grep -q 'pg_up 0'")
systemctl("start postgresql.service")
wait_for_unit("postgresql.service")
succeed(
"curl -sSf http://localhost:9187/metrics | grep -q 'pg_exporter_last_scrape_error 0'"
)
succeed("curl -sSf http://localhost:9187/metrics | grep -q 'pg_up 1'")
'';
};
rspamd = {
exporterConfig = {
enable = true;
};
metricProvider = {
services.rspamd.enable = true;
virtualisation.memorySize = 1024;
};
exporterTest = ''
wait_for_unit("rspamd.service")
wait_for_unit("prometheus-rspamd-exporter.service")
wait_for_open_port(11334)
wait_for_open_port(7980)
wait_until_succeeds(
"curl -sSf localhost:7980/metrics | grep -q 'rspamd_scanned{host=\"rspamd\"} 0'"
)
'';
};
snmp = {
exporterConfig = {
enable = true;
configuration.default = {
version = 2;
auth.community = "public";
};
};
exporterTest = ''
wait_for_unit("prometheus-snmp-exporter.service")
wait_for_open_port(9116)
succeed("curl -sSf localhost:9116/metrics | grep -q 'snmp_request_errors_total 0'")
'';
};
surfboard = {
exporterConfig = {
enable = true;
modemAddress = "localhost";
};
metricProvider = {
systemd.services.prometheus-surfboard-exporter.after = [ "nginx.service" ];
services.nginx = {
enable = true;
virtualHosts.localhost.locations."/cgi-bin/status".extraConfig = ''
return 204;
'';
};
};
exporterTest = ''
wait_for_unit("nginx.service")
wait_for_open_port(80)
wait_for_unit("prometheus-surfboard-exporter.service")
wait_for_open_port(9239)
succeed("curl -sSf localhost:9239/metrics | grep -q 'surfboard_up 1'")
'';
};
tor = {
exporterConfig = {
enable = true;
};
metricProvider = {
# Note: this does not connect the test environment to the Tor network.
# Client, relay, bridge or exit connectivity are disabled by default.
services.tor.enable = true;
services.tor.controlPort = 9051;
};
exporterTest = ''
wait_for_unit("tor.service")
wait_for_open_port(9051)
wait_for_unit("prometheus-tor-exporter.service")
wait_for_open_port(9130)
succeed("curl -sSf localhost:9130/metrics | grep -q 'tor_version{.\\+} 1'")
'';
};
varnish = {
exporterConfig = {
enable = true;
instance = "/var/spool/varnish/varnish";
group = "varnish";
};
metricProvider = {
systemd.services.prometheus-varnish-exporter.after = [
"varnish.service"
];
services.varnish = {
enable = true;
config = ''
vcl 4.0;
backend default {
.host = "127.0.0.1";
.port = "80";
}
'';
};
};
exporterTest = ''
wait_for_unit("prometheus-varnish-exporter.service")
wait_for_open_port(6081)
wait_for_open_port(9131)
succeed("curl -sSf http://localhost:9131/metrics | grep -q 'varnish_up 1'")
'';
};
wireguard = let snakeoil = import ./wireguard/snakeoil-keys.nix; in {
exporterConfig.enable = true;
metricProvider = {
networking.wireguard.interfaces.wg0 = {
ips = [ "10.23.42.1/32" "fc00::1/128" ];
listenPort = 23542;
inherit (snakeoil.peer0) privateKey;
peers = singleton {
allowedIPs = [ "10.23.42.2/32" "fc00::2/128" ];
inherit (snakeoil.peer1) publicKey;
};
};
systemd.services.prometheus-wireguard-exporter.after = [ "wireguard-wg0.service" ];
};
exporterTest = ''
wait_for_unit("prometheus-wireguard-exporter.service")
wait_for_open_port(9586)
wait_until_succeeds(
"curl -sSf http://localhost:9586/metrics | grep '${snakeoil.peer1.publicKey}'"
)
'';
};
};
in
mapAttrs (exporter: testConfig: (makeTest {
name = "prometheus-${exporter}-exporter";
nodes.${exporter} = mkMerge [{
services.prometheus.exporters.${exporter} = testConfig.exporterConfig;
} testConfig.metricProvider or {}];
testScript = ''
${exporter}.start()
${concatStringsSep "\n" (map (line:
if (builtins.substring 0 1 line == " " || builtins.substring 0 1 line == ")")
then line
else "${exporter}.${line}"
) (splitString "\n" (removeSuffix "\n" testConfig.exporterTest)))}
${exporter}.shutdown()
'';
meta = with maintainers; {
maintainers = [ willibutz ];
};
})) exporterTests