Pushing logs with a forwarder - Filebeat (Linux)

###################### 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: false

  # 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.
  #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.
  #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 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

#================================ 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_under_root: true
fields:
  X-OVH-TOKEN: 'xxxxxxxxxxxxxxxxxxxxx'

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

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

#----------------------------- Logstash output --------------------------------
output.logstash:
  # Boolean flag to enable or disable the output module.
  enabled: true

  # The Logstash hosts
  hosts: ["<your_cluster>.logs.ovh.com:5044"]

  # Set gzip compression level.
  compression_level: 3

  # Enable SSL support. SSL is automatically enabled if any SSL setting is set.
  ssl.enabled: true

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

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

#==================== Output template setting ==========================

setup.template.enabled: false
setup.ilm.enabled: false

#-------------------------- OpenSearch output ------------------------------
output.elasticsearch:
  # Array of hosts to connect to.
  hosts: ["<your-cluster>.logs.ovh.com:9200"]

  # Protocol - either `http` (default) or `https`.
  protocol: "https"

  # Authentication credentials - either API key or username/password.
  username: "pat_jwt_<your_suffix>"
  password: "<iam-token>"
  index: "ldp-logs"
  # Header for OpenSearch 2.X
  headers:
    X-Es-Compat: "7.10"

$ ldp@ubuntu:~$ sudo filebeat modules enable apache

- module: apache
  # Access logs
  access:
    enabled: true

    # Set custom paths for the log files. If left empty,
    # Filebeat will choose the paths depending on your OS.
    var.paths: ["/var/log/apache2/access.log*","/var/log/apache2/ssl_access.log*"]

  # Error logs
  error:
    enabled: true

    # Set custom paths for the log files. If left empty,
    # Filebeat will choose the paths depending on your OS.
    var.paths: ["/var/LOG/apache2/error_log*","/var/log/apache2/ssl_error_log*"]

$ ldp@ubuntu:~$ sudo filebeat modules enable system

- module: system
  # Syslog
  syslog:
    enabled: true

    # Set custom paths for the log files. If left empty,
    # Filebeat will choose the paths depending on your OS.
    var.paths: ["/var/log/syslog*"]

  # Authorization logs
  auth:
    enabled: true

    # Set custom paths for the log files. If left empty,
    # Filebeat will choose the paths depending on your OS.
    var.paths: ["/var/log/auth.log*"]

$ filebeat setup --pipelines --modules apache,system

$ ldp@ubuntu:~$ sudo systemctl restart filebeat.service

$ ldp@ubuntu:~$ sudo /etc/init.d/filebeat restart