290 lines
10 KiB
Nix
290 lines
10 KiB
Nix
# To run the test on the unfree ELK use the following command:
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# cd path/to/nixpkgs
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# NIXPKGS_ALLOW_UNFREE=1 nix-build -A nixosTests.elk.unfree.ELK-6
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{ system ? builtins.currentSystem,
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config ? {},
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pkgs ? import ../.. { inherit system config; },
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}:
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let
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inherit (pkgs) lib;
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esUrl = "http://localhost:9200";
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mkElkTest = name : elk :
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import ./make-test-python.nix ({
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inherit name;
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meta = with pkgs.lib.maintainers; {
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maintainers = [ eelco offline basvandijk ];
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};
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nodes = {
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one =
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{ pkgs, lib, ... }: {
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# Not giving the machine at least 2060MB results in elasticsearch failing with the following error:
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#
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# OpenJDK 64-Bit Server VM warning:
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# INFO: os::commit_memory(0x0000000085330000, 2060255232, 0)
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# failed; error='Cannot allocate memory' (errno=12)
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#
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# There is insufficient memory for the Java Runtime Environment to continue.
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# Native memory allocation (mmap) failed to map 2060255232 bytes for committing reserved memory.
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#
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# When setting this to 2500 I got "Kernel panic - not syncing: Out of
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# memory: compulsory panic_on_oom is enabled" so lets give it even a
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# bit more room:
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virtualisation.memorySize = 3000;
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# For querying JSON objects returned from elasticsearch and kibana.
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environment.systemPackages = [ pkgs.jq ];
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services = {
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journalbeat = {
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enable = elk ? journalbeat;
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package = elk.journalbeat;
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extraConfig = pkgs.lib.mkOptionDefault (''
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logging:
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to_syslog: true
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level: warning
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metrics.enabled: false
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output.elasticsearch:
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hosts: [ "127.0.0.1:9200" ]
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journalbeat.inputs:
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- paths: []
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seek: cursor
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'');
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};
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filebeat = {
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enable = elk ? filebeat;
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package = elk.filebeat;
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inputs.journald.id = "everything";
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inputs.log = {
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enabled = true;
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paths = [
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"/var/lib/filebeat/test"
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];
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};
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settings = {
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logging.level = "info";
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};
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};
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metricbeat = {
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enable = true;
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package = elk.metricbeat;
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modules.system = {
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metricsets = ["cpu" "load" "memory" "network" "process" "process_summary" "uptime" "socket_summary"];
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enabled = true;
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period = "5s";
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processes = [".*"];
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cpu.metrics = ["percentages" "normalized_percentages"];
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core.metrics = ["percentages"];
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};
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settings = {
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output.elasticsearch = {
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hosts = ["127.0.0.1:9200"];
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};
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};
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};
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logstash = {
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enable = true;
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package = elk.logstash;
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inputConfig = ''
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exec { command => "echo -n flowers" interval => 1 type => "test" }
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exec { command => "echo -n dragons" interval => 1 type => "test" }
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'';
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filterConfig = ''
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if [message] =~ /dragons/ {
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drop {}
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}
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'';
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outputConfig = ''
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file {
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path => "/tmp/logstash.out"
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codec => line { format => "%{message}" }
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}
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elasticsearch {
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hosts => [ "${esUrl}" ]
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}
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'';
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};
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elasticsearch = {
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enable = true;
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package = elk.elasticsearch;
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};
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kibana = {
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enable = true;
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package = elk.kibana;
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};
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elasticsearch-curator = {
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enable = true;
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actionYAML = ''
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---
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actions:
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1:
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action: delete_indices
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description: >-
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Delete indices older than 1 second (based on index name), for logstash-
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prefixed indices. Ignore the error if the filter does not result in an
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actionable list of indices (ignore_empty_list) and exit cleanly.
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options:
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allow_ilm_indices: true
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ignore_empty_list: True
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disable_action: False
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filters:
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- filtertype: pattern
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kind: prefix
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value: logstash-
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- filtertype: age
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source: name
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direction: older
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timestring: '%Y.%m.%d'
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unit: seconds
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unit_count: 1
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'';
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};
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};
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};
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};
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passthru.elkPackages = elk;
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testScript =
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let
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valueObject = lib.optionalString (lib.versionAtLeast elk.elasticsearch.version "7") ".value";
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in ''
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import json
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def expect_hits(message):
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dictionary = {"query": {"match": {"message": message}}}
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return (
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"curl --silent --show-error --fail-with-body '${esUrl}/_search' "
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+ "-H 'Content-Type: application/json' "
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+ "-d '{}' ".format(json.dumps(dictionary))
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+ " | tee /dev/console"
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+ " | jq -es 'if . == [] then null else .[] | .hits.total${valueObject} > 0 end'"
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)
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def expect_no_hits(message):
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dictionary = {"query": {"match": {"message": message}}}
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return (
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"curl --silent --show-error --fail-with-body '${esUrl}/_search' "
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+ "-H 'Content-Type: application/json' "
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+ "-d '{}' ".format(json.dumps(dictionary))
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+ " | tee /dev/console"
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+ " | jq -es 'if . == [] then null else .[] | .hits.total${valueObject} == 0 end'"
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)
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def has_metricbeat():
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dictionary = {"query": {"match": {"event.dataset": {"query": "system.cpu"}}}}
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return (
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"curl --silent --show-error --fail-with-body '${esUrl}/_search' "
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+ "-H 'Content-Type: application/json' "
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+ "-d '{}' ".format(json.dumps(dictionary))
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+ " | tee /dev/console"
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+ " | jq -es 'if . == [] then null else .[] | .hits.total${valueObject} > 0 end'"
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)
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start_all()
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one.wait_for_unit("elasticsearch.service")
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one.wait_for_open_port(9200)
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# Continue as long as the status is not "red". The status is probably
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# "yellow" instead of "green" because we are using a single elasticsearch
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# node which elasticsearch considers risky.
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#
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# TODO: extend this test with multiple elasticsearch nodes
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# and see if the status turns "green".
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one.wait_until_succeeds(
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"curl --silent --show-error --fail-with-body '${esUrl}/_cluster/health'"
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+ " | jq -es 'if . == [] then null else .[] | .status != \"red\" end'"
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)
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with subtest("Perform some simple logstash tests"):
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one.wait_for_unit("logstash.service")
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one.wait_until_succeeds("cat /tmp/logstash.out | grep flowers")
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one.wait_until_succeeds("cat /tmp/logstash.out | grep -v dragons")
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with subtest("Kibana is healthy"):
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one.wait_for_unit("kibana.service")
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one.wait_until_succeeds(
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"curl --silent --show-error --fail-with-body 'http://localhost:5601/api/status'"
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+ " | jq -es 'if . == [] then null else .[] | .status.overall.state == \"green\" end'"
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)
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with subtest("Metricbeat is running"):
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one.wait_for_unit("metricbeat.service")
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with subtest("Metricbeat metrics arrive in elasticsearch"):
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one.wait_until_succeeds(has_metricbeat())
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with subtest("Logstash messages arive in elasticsearch"):
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one.wait_until_succeeds(expect_hits("flowers"))
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one.wait_until_succeeds(expect_no_hits("dragons"))
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'' + lib.optionalString (elk ? journalbeat) ''
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with subtest(
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"A message logged to the journal is ingested by elasticsearch via journalbeat"
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):
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one.wait_for_unit("journalbeat.service")
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one.execute("echo 'Supercalifragilisticexpialidocious' | systemd-cat")
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one.wait_until_succeeds(
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expect_hits("Supercalifragilisticexpialidocious")
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)
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'' + lib.optionalString (elk ? filebeat) ''
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with subtest(
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"A message logged to the journal is ingested by elasticsearch via filebeat"
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):
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one.wait_for_unit("filebeat.service")
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one.execute("echo 'Superdupercalifragilisticexpialidocious' | systemd-cat")
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one.wait_until_succeeds(
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expect_hits("Superdupercalifragilisticexpialidocious")
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)
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one.execute(
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"echo 'SuperdupercalifragilisticexpialidociousIndeed' >> /var/lib/filebeat/test"
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)
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one.wait_until_succeeds(
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expect_hits("SuperdupercalifragilisticexpialidociousIndeed")
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)
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'' + ''
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with subtest("Elasticsearch-curator works"):
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one.systemctl("stop logstash")
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one.systemctl("start elasticsearch-curator")
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one.wait_until_succeeds(
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'! curl --silent --show-error --fail-with-body "${esUrl}/_cat/indices" | grep logstash | grep ^'
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)
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'';
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}) { inherit pkgs system; };
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in {
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# We currently only package upstream binaries.
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# Feel free to package an SSPL licensed source-based package!
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# ELK-7 = mkElkTest "elk-7-oss" {
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# name = "elk-7";
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# elasticsearch = pkgs.elasticsearch7-oss;
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# logstash = pkgs.logstash7-oss;
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# kibana = pkgs.kibana7-oss;
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# filebeat = pkgs.filebeat7;
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# metricbeat = pkgs.metricbeat7;
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# };
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unfree = lib.dontRecurseIntoAttrs {
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ELK-7 = mkElkTest "elk-7" {
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elasticsearch = pkgs.elasticsearch7;
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logstash = pkgs.logstash7;
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kibana = pkgs.kibana7;
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filebeat = pkgs.filebeat7;
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metricbeat = pkgs.metricbeat7;
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};
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};
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}
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