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Elastic Stack 8 : Install Filebeat
2022/12/09
 
Install Filebeat that easily ships log file data to Elasticsearch or Logstash.
[1] Install Filebeat. Configure Elasticsearch repository before it.
[root@dlp ~]#
dnf -y install filebeat
[2] Configure basic settings and start Filebeat.
[root@dlp ~]#
vi /etc/filebeat/filebeat.yml
# line 28 : set items to collect data
# if collect logs, turn to [enabled: true]
# by default, /var/log/*.log files are shiped

- type: filestream

  # Unique ID among all inputs, an ID is required.
  id: my-filestream-id

  # Change to true to enable this input configuration.
  enabled: true

  # Paths that should be crawled and fetched. Glob based paths.
  paths:
    - /var/log/*.log
    #- c:\programdata\elasticsearch\logs\*

  # Exclude lines. A list of regular expressions to match. It drops the lines that are
  # matching any regular expression from the list.
  # Line filtering happens after the parsers pipeline. If you would like to filter lines
  # before parsers, use include_message parser.
  #exclude_lines: ['^DBG']

  # Include lines. A list of regular expressions to match. It exports the lines that are
  # matching any regular expression from the list.
  # Line filtering happens after the parsers pipeline. If you would like to filter lines
  # before parsers, use include_message parser.
  #include_lines: ['^ERR', '^WARN']

.....
.....

# line 108 : if use Kibana, uncomment and specify output host
# if SSL is enabled on Kibana, hostname should be the same with the hostname in certs
# [username] and [password] is the admin user's one
# if using self-signed certificate, specify [ssl.verification_mode: none]

setup.kibana:
.....
  host: "https://dlp.srv.world:5601"
  protocol: "https"
  username: "elastic"
  password: "password"
  ssl.enabled: true
  ssl.verification_mode: none

# line 144 : specify output of Elasticsearch
# [username] and [password] is the admin user's one
# [ssl.certificate_authorities] is the cacert generated by Elasticsearch installation

output.elasticsearch:
  # Array of hosts to connect to.l
  hosts: ["https://dlp.srv.world:9200"]

  protocol: "https"
  username: "elastic"
  password: "password"
  ssl.certificate_authorities: "/etc/elasticsearch/certs/http_ca.crt"

.....
.....

[root@dlp ~]#
vi /etc/filebeat/filebeat.reference.yml
# line 15 : set items to collect data

- module: system
  # Syslog
  syslog:
    enabled: true

.....
.....

  # Authorization logs
  auth:
    enabled: true

# line 4720 : if use Kibana, uncomment and specify output host
# if SSL is enabled on Kibana, uncomment ssl related lines
# [username] and [password] is the admin user's one
# if using self-signed certificate, specify [ssl.verification_mode: none]

setup.kibana:

  # Kibana Host
  # Scheme and port can be left out and will be set to the default (http and 5601)
  # In case you specify and additional path, the scheme is required: http://localhost:5601/path
  # IPv6 addresses should always be defined as: https://[2001:db8::1]:5601
  host: "https://dlp.srv.world:5601"

  # Optional protocol and basic auth credentials.
  protocol: "https"
  username: "elastic"
  password: "password"

  # Optional HTTP Path
  #path: ""

  # Use SSL settings for HTTPS. Default is true.
  ssl.enabled: true

.....
.....

  # after very careful consideration. It is primarily intended as a temporary
  # diagnostic mechanism when attempting to resolve TLS errors; its use in
  # production environments is strongly discouraged.
  # The default value is full.
  ssl.verification_mode: none

[root@dlp ~]#
systemctl enable --now filebeat
[3] Verify status the data has been collected normally.
# index list

[root@dlp ~]#
curl -u elastic --cacert /etc/elasticsearch/certs/http_ca.crt https://127.0.0.1:9200/_cat/indices?v

Enter host password for user 'elastic':
health status index                                  uuid                   pri rep docs.count docs.deleted store.size pri.store.size
yellow open   .ds-filebeat-8.5.3-2022.12.09-000001   u0HPkEGHRD256vQWbUiyAQ   1   1          0            0    668.4kb        668.4kb
yellow open   .ds-metricbeat-8.5.3-2022.12.09-000001 M5Aeg-pHQL6llaMBUD3JuA   1   1       2455            0      3.3mb          3.3mb
yellow open   .ds-packetbeat-8.5.3-2022.12.09-000001 8fLB4BygSyaQgo0naZMsYw   1   1      22781            0      6.5mb          6.5mb
yellow open   test_index                             yWfKwu85RpWT_LdWnsnV9Q   1   1          1            0      6.4kb          6.4kb

# document list on the index

[root@dlp ~]#
curl -u elastic --cacert /etc/elasticsearch/certs/http_ca.crt https://127.0.0.1:9200/.ds-filebeat-8.5.3-2022.12.09-000001/_search?pretty

Enter host password for user 'elastic':
{
  "took" : 0,
  "timed_out" : false,
  "_shards" : {
    "total" : 1,
    "successful" : 1,
    "skipped" : 0,
    "failed" : 0
  },
  "hits" : {
    "total" : {
      "value" : 6420,
      "relation" : "eq"
    },
    "max_score" : 1.0,
    "hits" : [
      {
        "_index" : ".ds-filebeat-8.5.3-2022.12.09-000001",
        "_id" : "wCED9oQBSb5fRSPmV4lu",
        "_score" : 1.0,
.....
.....
[4] If Kibana is running, it's possible to import data to sample Dashboards.
[root@dlp ~]#
filebeat setup --dashboards

Loading dashboards (Kibana must be running and reachable)
Loaded dashboards
Matched Content