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Logstash Dockerfile

This is a highly configurable logstash (1.4.2) image running Elasticsearch (1.1.1) and Kibana (3.0.1).

How to use this image

To run the image, you have to first decide on one of three Elasticsearch configurations:

  • Use the embedded Elasticsearch server
  • Use a linked container running Elasticsearch
  • Use an external Elasticsearch server

Embedded Elasticsearch server

By default, an example logstash.conf will be downloaded using wget and used in your container.

$ docker run -d \
  -p 9292:9292 \
  -p 9200:9200 \
  pblittle/docker-logstash

To use your own config file, set the LOGSTASH_CONFIG_URL environment variable using the -e flag as follows:

$ docker run -d \
  -e LOGSTASH_CONFIG_URL=<your_logstash_config_url> \
  -p 9292:9292 \
  -p 9200:9200 \
  pblittle/docker-logstash

Linked container running Elasticsearch

If you want to link to container running Elasticsearch rather than use the embedded Elasticsearch server:

$ docker run -d \
  -e LOGSTASH_CONFIG_URL=<your_logstash_config_url> \
  --link <your_es_container_name>:es \
  -p 9292:9292 \
  -p 9200:9200 \
  pblittle/docker-logstash

To have the linked Elasticsearch container's bind_host and port automatically detected, you will need to create an ES_HOST and ES_PORT placeholder in the elasticsearch definition in your logstash config file. For example:

output {
  elasticsearch {
    bind_host => "ES_HOST"
    port => "ES_PORT"
  }
}

I have created an example logstash_linked.conf which includes the ES_HOST and ES_PORT placeholders to serve as an example.

External Elasticsearch server

If you are using an external Elasticsearch server rather than the embedded server or a linked container, simply provide a configuration file with the Elasticsearch endpoints already configured:

$ docker run -d \
  -e LOGSTASH_CONFIG_URL=<your_logstash_config_url> \
  -p 9292:9292 \
  -p 9200:9200 \
  pblittle/docker-logstash

Finally, verify the installation

You can now verify the logstash installation by visiting the prebuilt logstash dashboard:

http://<your_container_ip>:9292/index.html#/dashboard/file/logstash.json

Optional, build and run the image from source

If you prefer to build from source rather than use the pblittle/docker-logstash trusted build published to the public Docker Registry, execute the following:

$ git clone https://github.com/pblittle/docker-logstash.git
$ cd docker-logstash

If you are using Vagrant, start and provision a virtual machine using the provided Vagrantfile:

$ vagrant up
$ vagrant ssh
$ cd /vagrant

From there, build and run a container using the newly created virtual machine:

$ make build
$ make <options> run

You can now verify the logstash installation by visiting the prebuilt logstash dashboard running in the newly created container.

Acknowledgements

Special shoutout to @ehazlett's excellent post, logstash and Kibana via Docker.

Contributing

  1. Fork it
  2. Create your feature branch (git checkout -b my-new-feature)
  3. Commit your changes (git commit -am 'Add some feature')
  4. Push to the branch (git push origin my-new-feature)
  5. Create new Pull Request

License

This application is distributed under the Apache License, Version 2.0.

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yyken
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