Filebeat mapping bug with json enabled?

Hi All,

Let's say I have app with such output line: "{'message':'example output from my app'}",

when I use filebeat without json parsing giving "my app" in kibana is enough to find it
... but with json parsing enabled "my app" gives me zero results in kibana I need to input whole line to find it.

Is it bug, feature, some missconfiguration?

tested with filebeat 6.5.4 and 7.1.1, index recreated after enabling json (kibana mapping also), json is parsed without errors

Cheers,
Daniel

Hi,

Can you provide some more details, like how you are indexing data to ElasticSearch from FileBeats.

  1. Are you directly indexing data to ElasticSearch from Filebeats ?
  2. Are you using Logstash to parse logs from FileBeats and then indexing parsed logs to ElasticSearch from Logstash ?
  3. Can you show your filebeats config file ?
  4. Do you see any errors in the console .... Did you try enabling debug log ?

You can enable debug log by appending -d "*" to the cmd that you use to start filebeats/logstash

1.Are you directly indexing data to ElasticSearch from Filebeats ?

yes

2.Are you using Logstash to parse logs from FileBeats and then indexing parsed logs to ElasticSearch from Logstash ?

no

3.Can you show your filebeats config file ?

  paths:
    - ... path ...
  json.message_key: message
  json.keys_under_root: false
  json.add_error_key: true
  json.overwrite_keys: false

  fields_under_root: true
  fields:
    json:
      args: ""

  exclude_lines:
    - 'closed pipe:'

4.Do you see any errors in the console .... Did you try enabling debug log ?

no and no... log from my app is placed in ES without problems... it seems that json.message is not indexed the same way as pure message (when json is disabled)

First of all, I didn't get answers for question 1 & 2. Now I don't exactly understand what you are trying to do.

By seeing this config, I can tell you that this is not the full config. From my understanding If this is all that you have in your filebeats config, then it;s obvious that you didn't configure any output.

sorry, I'm completely confused now :frowning:

I did answered to 1 & 2

that is config for particular log where I want to enable json logs:

MAIN CONF:


# 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.config.inputs:

  enabled: true
  path: configs/*.yml

  # Exclude lines. A list of regular expressions to match. It drops the lines that are
  # matching any regular expression from the list.

  # 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: ^[(\s|\[|>)]

  # 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"

#============================= 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: ["{{ beats_logs_target }}"]

  # 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"

#================================ 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: ["*"]

particular conf:

- type: log
  paths:
    - path
  json.message_key: message
  json.keys_under_root: false
  json.add_error_key: true
  json.overwrite_keys: false

  fields_under_root: true
  fields:
    json:
      args: ""

  exclude_lines:
    - 'closed pipe:'

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