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docker-logstash

This is a highly configurable logstash (1.4.2) image running elasticsearch (1.1.1) and Kibana 3 (3.0.1).

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
$ make build
$ make <options> run

See below for a complate example using Vagrant.

Running Logstash

First, prepare your Logstash configuration file

The logstash configuration file used in this container is downloaded from the internet using wget. The configuration file location is determined by the value of the LOGSTASH_CONFIG_FILE environment variable, which is set using the -e flag when executing docker run.

Unless LOGSTASH_CONFIG_FILE is overridden, an example configuration file for an embedded Elasticsearch will be downloaded, moved to /opt/logstash.conf, and used in your container.

I have created two reference config files that can be used for testing:

You will find example usage using -e LOGSTASH_CONFIG_URL=<your_logstash_config_url> below.

Second, choose an Elasticsearch install type

To run this logstash image, you have to first choose one of three Elasticsearch configurations.

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

Use the embedded Elasticsearch server

To fetch and start a container running logstash and the embedded Elasticsearch server, simply execute:

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

If you want to use your own config file rather than the default, don't forget the LOGSTASH_CONFIG_URL environment variable as noted above:

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

Use a linked container running Elasticsearch

If you want to link to another container running elasticsearch rather than use the embedded 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 you 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 linked config file which includes the ES_HOST and ES_PORT placeholders described above.

Use an 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

Test locally using Vagrant

To build the image locally using Vagrant, you will first need to clone the repository:

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

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 Kibana3 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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Owner
marcelmaatkamp
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