Splunk logging driver (Engine)

Splunk logging driver

The splunk logging driver sends container logs to HTTP Event Collector in Splunk Enterprise and Splunk Cloud.

Usage

You can configure the default logging driver by passing the --log-driver option to the Docker daemon:

docker daemon --log-driver=splunk

You can set the logging driver for a specific container by using the --log-driver option to docker run:

docker run --log-driver=splunk ...

Splunk options

You can use the --log-opt NAME=VALUE flag to specify these additional Splunk logging driver options:

Option Required Description
splunk-token required Splunk HTTP Event Collector token.
splunk-url required Path to your Splunk Enterprise or Splunk Cloud instance (including port and schema used by HTTP Event Collector) https://your_splunk_instance:8088.
splunk-source optional Event source.
splunk-sourcetype optional Event source type.
splunk-index optional Event index.
splunk-capath optional Path to root certificate.
splunk-caname optional Name to use for validating server certificate; by default the hostname of the splunk-url will be used.
splunk-insecureskipverify optional Ignore server certificate validation.
tag optional Specify tag for message, which interpret some markup. Default value is {{.ID}} (12 characters of the container ID). Refer to the log tag option documentation for customizing the log tag format.
labels optional Comma-separated list of keys of labels, which should be included in message, if these labels are specified for container.
env optional Comma-separated list of keys of environment variables, which should be included in message, if these variables are specified for container.

If there is collision between label and env keys, the value of the env takes precedence. Both options add additional fields to the attributes of a logging message.

Below is an example of the logging option specified for the Splunk Enterprise instance. The instance is installed locally on the same machine on which the Docker daemon is running. The path to the root certificate and Common Name is specified using an HTTPS schema. This is used for verification. The SplunkServerDefaultCert is automatically generated by Splunk certificates.

docker run --log-driver=splunk \
    --log-opt splunk-token=176FCEBF-4CF5-4EDF-91BC-703796522D20 \
    --log-opt splunk-url=https://splunkhost:8088 \
    --log-opt splunk-capath=/path/to/cert/cacert.pem \
    --log-opt splunk-caname=SplunkServerDefaultCert
    --log-opt tag="{{.Name}}/{{.FullID}}"
    --log-opt labels=location
    --log-opt env=TEST
    --env "TEST=false"
    --label location=west
    your/application

© 2013–2016 Docker, Inc.
Licensed under the Apache License, Version 2.0.
Docker and the Docker logo are trademarks or registered trademarks of Docker, Inc. in the United States and/or other countries.
Docker, Inc. and other parties may also have trademark rights in other terms used herein.
https://docs.docker.com/v1.11/engine/admin/logging/splunk/

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