如何删除 filebeat 元数据

how to remove filebeat metadata

我正在使用 filebeat 将传入的日志从 haproxy 转发到 Kafka 主题,但是在转发 filebeat 之后,向 kafka 消息添加了如此多的元数据,这会消耗更多我想避免的内存。

消息从 filebeat 下沉到 kafka 的示例,其中添加了元数据、主机和许多其他内容:

{ "@timestamp": "2017-03-27T08:14:09.508Z", “打”: { “主机名”:“舞台-kube03”, “名称”:“舞台-kube03”, “版本”:“5.2.1” }, "input_type": "日志", “信息”: { “信息”: { “活动类型”:空 }, “偏移量”:3783008, "来源": "/var/log/audit.log", “类型”:“日志” } 我如何 control/reduce 将附加元数据 filebeat 添加到 kafka 消息以及日志行有效负载?下面是我的 filebeat.yml 文件

###################### Filebeat Configuration Example #########################

# This file is an example configuration file highlighting only the most common
# options. The filebeat.reference.yml file from the same directory contains all the
# supported options with more comments. You can use it as a reference.
#
# You can find the full configuration reference here:
# https://www.elastic.co/guide/en/beats/filebeat/index.html

# For more available modules and options, please see the filebeat.reference.yml sample
# configuration file.

#=========================== Filebeat inputs =============================

filebeat.inputs:

# Each - is an input. Most options can be set at the input level, so
# you can use different inputs for various configurations.
# Below are the input specific configurations.

- type: log

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

  # Paths that should be crawled and fetched. Glob based paths.
  paths:
    - /var/log/haproxy.log
  #exclude_files: [".gz$"]
  #fields:
   # codec: plain
   # token: USER_TOKEN
   # type: haproxy_log
  #fields_under_root: true
    #- c:\programdata\elasticsearch\logs\*
  processors:
   - drop_event:
     # fields: ["prospector","event","dataset"]

  # Exclude lines. A list of regular expressions to match. It drops the lines that are
  # matching any regular expression from the list.
  #exclude_lines: ['^DBG']
  exclude_lines: ['^source']
  # Include lines. A list of regular expressions to match. It exports the lines that are
  # matching any regular expression from the list.
  #include_lines: ['^ERR', '^WARN']

  # Exclude files. A list of regular expressions to match. Filebeat drops the files that
  # are matching any regular expression from the list. By default, no files are dropped.
  #exclude_files: ['.gz$']

  # Optional additional fields. These fields can be freely picked
  # to add additional information to the crawled log files for filtering
  #fields:
  #  level: debug
  #  review: 1

  ### Multiline options

  # Multiline can be used for log messages spanning multiple lines. This is common
  # for Java Stack Traces or C-Line Continuation

  # The regexp Pattern that has to be matched. The example pattern matches all lines starting with [
  #multiline.pattern: ^\[

  # Defines if the pattern set under pattern should be negated or not. Default is false.
  #multiline.negate: false

  # Match can be set to "after" or "before". It is used to define if lines should be append to a pattern
  # that was (not) matched before or after or as long as a pattern is not matched based on negate.
  # Note: After is the equivalent to previous and before is the equivalent to to next in Logstash
  #multiline.match: after


#============================= Filebeat modules ===============================

filebeat.config.modules:
  # Glob pattern for configuration loading
  path: ${path.config}/modules.d/*.yml

  # Set to true to enable config reloading
  reload.enabled: false

  # Period on which files under path should be checked for changes
  #reload.period: 10s

#==================== Elasticsearch template setting ==========================

setup.template.settings:
  index.number_of_shards: 3
  #index.codec: best_compression
  #_source.enabled: false

#================================ General =====================================

# The name of the shipper that publishes the network data. It can be used to group
# all the transactions sent by a single shipper in the web interface.
#name:

# The tags of the shipper are included in their own field with each
# transaction published.
#tags: ["service-X", "web-tier"]

# Optional fields that you can specify to add additional information to the
# output.
#fields:
#  env: staging


#============================== Dashboards =====================================
# These settings control loading the sample dashboards to the Kibana index. Loading
# the dashboards is disabled by default and can be enabled either by setting the
# options here, or by using the `-setup` CLI flag or the `setup` command.
#setup.dashboards.enabled: false

# The URL from where to download the dashboards archive. By default this URL
# has a value which is computed based on the Beat name and version. For released
# versions, this URL points to the dashboard archive on the artifacts.elastic.co
# website.
#setup.dashboards.url:

#============================== Kibana =====================================

# Starting with Beats version 6.0.0, the dashboards are loaded via the Kibana API.
# This requires a Kibana endpoint configuration.
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: "localhost:5601"

  # Kibana Space ID
  # ID of the Kibana Space into which the dashboards should be loaded. By default,
  # the Default Space will be used.
  #space.id:

#============================= Elastic Cloud ==================================

# These settings simplify using filebeat with the Elastic Cloud (https://cloud.elastic.co/).

# The cloud.id setting overwrites the `output.elasticsearch.hosts` and
# `setup.kibana.host` options.
# You can find the `cloud.id` in the Elastic Cloud web UI.
#cloud.id:

# The cloud.auth setting overwrites the `output.elasticsearch.username` and
# `output.elasticsearch.password` settings. The format is `<user>:<pass>`.
#cloud.auth:

#================================ Outputs =====================================

# Configure what output to use when sending the data collected by the beat.

#-------------------------- Elasticsearch output ------------------------------
#output.elasticsearch:
  # Array of hosts to connect to.
 # hosts: ["localhost:9200"]

  # Enabled ilm (beta) to use index lifecycle management instead daily indices.
  #ilm.enabled: false

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

#----------------------------- Logstash output --------------------------------
#output.logstash:
  # The Logstash hosts
  #hosts: ["localhost:5044"]

  # Optional SSL. By default is off.
  # List of root certificates for HTTPS server verifications
  #ssl.certificate_authorities: ["/etc/pki/root/ca.pem"]

  # Certificate for SSL client authentication
  #ssl.certificate: "/etc/pki/client/cert.pem"

  # Client Certificate Key
  #ssl.key: "/etc/pki/client/cert.key"

#================================ Processors =====================================

# Configure processors to enhance or manipulate events generated by the beat.

processors:
  - add_host_metadata: ~
  - add_cloud_metadata: ~

#================================ Logging =====================================

# Sets log level. The default log level is info.
# Available log levels are: error, warning, info, debug
#logging.level: debug

# At debug level, you can selectively enable logging only for some components.
# To enable all selectors use ["*"]. Examples of other selectors are "beat",
# "publish", "service".
#logging.selectors: ["*"]

#============================== Xpack Monitoring ===============================
# filebeat can export internal metrics to a central Elasticsearch monitoring
# cluster.  This requires xpack monitoring to be enabled in Elasticsearch.  The
# reporting is disabled by default.

# Set to true to enable the monitoring reporter.
#xpack.monitoring.enabled: false

# Uncomment to send the metrics to Elasticsearch. Most settings from the
# Elasticsearch output are accepted here as well. Any setting that is not set is
# automatically inherited from the Elasticsearch output configuration, so if you
# have the Elasticsearch output configured, you can simply uncomment the
# following line.
#xpack.monitoring.elasticsearch:

output.kafka:
  hosts: ["10.12.0.90:9092"]
  topic: "data-meter-topic"
  codec.json:
    pretty: true

您需要删除您明确添加的额外 add_host_metadataadd_cloud_metadata 元数据,并删除带有 drop_field processor:

的其余字段

我已经测试了您的配置并更改了以下内容:

filebeat.inputs:
- type: log
  enabled: true
  paths:
    - /var/log/*.log
output.console:
  pretty: true
processors:
  - drop_fields:
      fields: ["agent", "log", "input", "host", "ecs" ]
  #- add_host_metadata: ~
  #- add_cloud_metadata: ~

结果:

{
  "@timestamp": "2020-11-27T15:55:17.098Z",
  "@metadata": {
    "beat": "filebeat",
    "type": "_doc",
    "version": "7.10.0"
  },
  "message": "2020-11-27 00:29:58 status installed libc-bin:amd64 2.28-10"
}

根据 documentation,您无法删除某些元数据,即 @timestamptype(应包括 @metadata 字段)。

The drop_fields processor specifies which fields to drop if a certain condition is fulfilled. The condition is optional. If it’s missing, the specified fields are always dropped. The @timestamp and type fields cannot be dropped, even if they show up in the drop_fields list.

编辑:

因为你似乎是 运行 filebeat 5.2.1,我尝试了以下配置,比 filebeat 7.x:

更成功
filebeat.prospectors:
- input_type: log
  paths:
    - /var/log/*.log
output.console:
  pretty: true
processors:
  - drop_fields:
     fields: ["log_type", "input_type", "offset", "beat", "source"]

结果:

{
  "@timestamp": "2020-11-30T09:51:40.404Z",
  "message": "2020-11-27 00:29:58 status half-configured vim:amd64 2:8.1.0875-5",
  "type": "log"
}

编辑2:

相反,因为你发布了 filebeat 6.8.0 版本输出,我也用这个完全相同的版本进行了测试:

filebeat.inputs:
- type: log
  enabled: true
  paths:
    - /var/log/*.log
output.console:
  pretty: true
processors:
  - drop_fields:
      fields: ["beat", "source", "prospector", "offset", "host", "log", "input", "event", "fileset" ]
  #- add_host_metadata: ~
  #- add_cloud_metadata: ~

输出:

{
  "@timestamp": "2020-11-30T10:08:26.176Z",
  "@metadata": {
    "beat": "filebeat",
    "type": "doc",
    "version": "6.8.0"
  },
  "message": "2020-11-27 00:29:58 status unpacked vim:amd64 2:8.1.0875-5"
}