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Merge pull request #48055 from WilliButz/add-exporter-tests

nixos/tests: add test for prometheus exporters
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fpletz committed Oct 11, 2018
2 parents 5660ac7 + 0febc64 commit 0aabc77a0336ad4efba606af22cd83e9478e1721
@@ -123,15 +123,13 @@ let
systemd.services."prometheus-${name}-exporter" = mkMerge ([{
wantedBy = [ "multi-user.target" ];
after = [ "network.target" ];
serviceConfig = {
Restart = mkDefault "always";
PrivateTmp = mkDefault true;
WorkingDirectory = mkDefault /tmp;
} // mkIf (!(serviceOpts.serviceConfig.DynamicUser or false)) {
User = conf.user;
Group = conf.group;
};
} serviceOpts ]);
serviceConfig.Restart = mkDefault "always";
serviceConfig.PrivateTmp = mkDefault true;
serviceConfig.WorkingDirectory = mkDefault /tmp;
} serviceOpts ] ++ optional (serviceOpts.serviceConfig.DynamicUser or false) {
serviceConfig.User = conf.user;
serviceConfig.Group = conf.group;
});
};
in
{
@@ -172,5 +170,8 @@ in
}) exporterOpts)
);
meta.doc = ./exporters.xml;
meta = {
doc = ./exporters.xml;
maintainers = [ maintainers.willibutz ];
};
}
@@ -69,6 +69,7 @@ in
path = [ pkgs.varnish ];
serviceConfig = {
DynamicUser = true;
RestartSec = mkDefault 1;
ExecStart = ''
${pkgs.prometheus-varnish-exporter}/bin/prometheus_varnish_exporter \
--web.listen-address ${cfg.listenAddress}:${toString cfg.port} \
View
@@ -390,6 +390,7 @@ in rec {
tests.predictable-interface-names = callSubTests tests/predictable-interface-names.nix {};
tests.printing = callTest tests/printing.nix {};
tests.prometheus = callTest tests/prometheus.nix {};
tests.prometheus-exporters = callTest tests/prometheus-exporters.nix {};
tests.prosody = callTest tests/prosody.nix {};
tests.proxy = callTest tests/proxy.nix {};
tests.quagga = callTest tests/quagga.nix {};
@@ -0,0 +1,297 @@
import ./make-test.nix ({ lib, pkgs, ... }:
let
escape' = str: lib.replaceChars [''"'' "$" "\n"] [''\\\"'' "\\$" ""] str;
/*
* 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 = ''
* waitForUnit("prometheus-<exporterName>-exporter.service");
* waitForOpenPort("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>->waitForUnit("prometheus-<exporterName>-exporter.service");
* $<exporterName>->waitForOpenPort("1234");
* $<exporterName>->succeed("curl -sSf 'localhost:1234/metrics'");
* $<exporterName>->shutdown();
* '';
*/
exporterTests = {
blackbox = {
exporterConfig = {
enable = true;
configFile = pkgs.writeText "config.yml" (builtins.toJSON {
modules.icmp_v6 = {
prober = "icmp";
icmp.preferred_ip_protocol = "ip6";
};
});
};
exporterTest = ''
waitForUnit("prometheus-blackbox-exporter.service");
waitForOpenPort(9115);
succeed("curl -sSf 'http://localhost:9115/probe?target=localhost&module=icmp_v6' | grep -q 'probe_success 1'");
'';
};
collectd = {
exporterConfig = {
enable = true;
extraFlags = [ "--web.collectd-push-path /collectd" ];
};
exporterTest =let postData = escape' ''
[{
"values":[23],
"dstypes":["gauge"],
"type":"gauge",
"interval":1000,
"host":"testhost",
"plugin":"testplugin",
"time":$(date +%s)
}]
''; in ''
waitForUnit("prometheus-collectd-exporter.service");
waitForOpenPort(9103);
succeed("curl -sSfH 'Content-Type: application/json' -X POST --data \"${postData}\" localhost:9103/collectd");
succeed("curl -sSf localhost:9103/metrics | grep -q 'collectd_testplugin_gauge{instance=\"testhost\"} 23'");
'';
};
dnsmasq = {
exporterConfig = {
enable = true;
leasesPath = "/var/lib/dnsmasq/dnsmasq.leases";
};
metricProvider = {
services.dnsmasq.enable = true;
};
exporterTest = ''
waitForUnit("prometheus-dnsmasq-exporter.service");
waitForOpenPort(9153);
succeed("curl -sSf http://localhost:9153/metrics | grep -q 'dnsmasq_leases 0'");
'';
};
dovecot = {
exporterConfig = {
enable = true;
scopes = [ "global" ];
socketPath = "/var/run/dovecot2/old-stats";
user = "root"; # <- don't use user root in production
};
metricProvider = {
services.dovecot2.enable = true;
};
exporterTest = ''
waitForUnit("prometheus-dovecot-exporter.service");
waitForOpenPort(9166);
succeed("curl -sSf http://localhost:9166/metrics | grep -q 'dovecot_up{scope=\"global\"} 1'");
'';
};
fritzbox = { # TODO add proper test case
exporterConfig = {
enable = true;
};
exporterTest = ''
waitForUnit("prometheus-fritzbox-exporter.service");
waitForOpenPort(9133);
succeed("curl -sSf http://localhost:9133/metrics | grep -q 'fritzbox_exporter_collect_errors 0'");
'';
};
json = {
exporterConfig = {
enable = true;
url = "http://localhost";
configFile = pkgs.writeText "json-exporter-conf.json" (builtins.toJSON [{
name = "json_test_metric";
path = "$.test";
}]);
};
metricProvider = {
systemd.services.prometheus-json-exporter.after = [ "nginx.service" ];
services.nginx = {
enable = true;
virtualHosts.localhost.locations."/".extraConfig = ''
return 200 "{\"test\":1}";
'';
};
};
exporterTest = ''
waitForUnit("nginx.service");
waitForOpenPort(80);
waitForUnit("prometheus-json-exporter.service");
waitForOpenPort(7979);
succeed("curl -sSf localhost:7979/metrics | grep -q 'json_test_metric 1'");
'';
};
nginx = {
exporterConfig = {
enable = true;
};
metricProvider = {
services.nginx = {
enable = true;
statusPage = true;
virtualHosts."/".extraConfig = "return 204;";
};
};
exporterTest = ''
waitForUnit("nginx.service")
waitForUnit("prometheus-nginx-exporter.service")
waitForOpenPort(9113)
succeed("curl -sSf http://localhost:9113/metrics | grep -q 'nginx_up 1'")
'';
};
node = {
exporterConfig = {
enable = true;
};
exporterTest = ''
waitForUnit("prometheus-node-exporter.service");
waitForOpenPort(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 = ''
waitForUnit("prometheus-postfix-exporter.service");
waitForOpenPort(9154);
succeed("curl -sSf http://localhost:9154/metrics | grep -q 'postfix_smtpd_connects_total 0'");
'';
};
snmp = {
exporterConfig = {
enable = true;
configuration.default = {
version = 2;
auth.community = "public";
};
};
exporterTest = ''
waitForUnit("prometheus-snmp-exporter.service");
waitForOpenPort(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 = ''
waitForUnit("nginx.service");
waitForOpenPort(80);
waitForUnit("prometheus-surfboard-exporter.service");
waitForOpenPort(9239);
succeed("curl -sSf localhost:9239/metrics | grep -q 'surfboard_up 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 = ''
waitForUnit("prometheus-varnish-exporter.service");
waitForOpenPort(9131);
succeed("curl -sSf http://localhost:9131/metrics | grep -q 'varnish_up 1'");
'';
};
};
nodes = lib.mapAttrs (exporter: testConfig: lib.mkMerge [{
services.prometheus.exporters.${exporter} = testConfig.exporterConfig;
} testConfig.metricProvider or {}]) exporterTests;
testScript = lib.concatStrings (lib.mapAttrsToList (exporter: testConfig: (''
subtest "${exporter}", sub {
${"$"+exporter}->start();
${lib.concatStringsSep " " (map (line: ''
${"$"+exporter}->${line};
'') (lib.splitString "\n" (lib.removeSuffix "\n" testConfig.exporterTest)))}
${"$"+exporter}->shutdown();
};
'')) exporterTests);
in
{
name = "prometheus-exporters";
inherit nodes testScript;
meta = with lib.maintainers; {
maintainers = [ willibutz ];
};
})

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