environment_variables.yaml

# Environment Variables Example
# ------------------------------------------------------------------------------
# A simple example that demonstrates Vector's environment variable
# interpolation syntax. More information can be found in the Environment
# Variables section in our docs:
#
# https://vector.dev/docs/setup/configuration#environment-variables
data_dir: "/var/lib/vector"

# Ingests Apache 2 log data by tailing one or more log files
# Example: 194.221.90.140 - - [22/06/2019:11:55:14 -0400] "PUT /integrate" 100 2213
# Docs: https://vector.dev/docs/reference/configuration/sources/file
sources:
  apache_logs:
    type: "file"
    include: [ "/var/log/apache2/*.log" ]
    # ignore files older than 1 day
    ignore_older_secs: 86400

# Add a field based on the value of the HOSTNAME env var
# Docs: https://vector.dev/docs/reference/configuration/transforms/remap
transforms:
  add_host:
    inputs: [ "apache_logs" ]
    type: "remap"
    source: |
      '''
      .host = get_env_var!("HOSTNAME")
      '''

# Print the data to STDOUT for inspection
# Docs: https://vector.dev/docs/reference/configuration/sinks/console
sinks:
  out:
    inputs: [ "add_host" ]
    type: "console"
    encoding:
      codec: "json"