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Last pushed: 2 years ago
Short Description
fluentd setup to use the elastic search plugin and user customizable elastic search host/container.
Full Description


Base docker image to run fluentd, with the ElasticSearch plugin.

Building a tagged release from Github

As an alternative to the Docker Index, an image can be created from my Github repository:

# docker build -t openfirmware/fluentd-elasticsearch

Once built, the image will be available locally as openfirmware/fluentd-elasticsearch. The command can be re-run to update the image with any changes to the Dockerfile.

Running fluentd

Run the following command to start fluentd:

# docker run -d -p 8888:8888 -p 24224:24224 openfirmware/fluentd-elasticsearch

By default, the plugin will assume these details for ElasticSearch:

host: localhost
port: 9200
index_name: fluentd
type_name: fluentd

These are almost certainly not useful unless you are using a different base image that includes ElasticSearch. Instead, customize the settings using environment variables as explained in the following sections.

Running fleuntd with a remote Elastic Search host

With ElasticSearch running on and port 9500:

# docker run -d -p 8888:8888 -p 24224:24224 -e ES_HOST="" -e ES_PORT="9500" openfirmware/fluentd-elasticsearch

Enviroment Variables you can customize:


Host IP or address for ElasticSearch. Multiple hosts are not supported in this Dockerfile currently. Defaults to $ELASTICSEARCH_PORT_9200_TCP_ADDR then localhost.


Host port for ElasticSearch. Defaults to $ELASTICSEARCH_PORT_9200_TCP_PORT then 9200.


Index name for ElasticSearch. Defaults to fluentd.


Type name for ElasticSearch. Defaults to fluentd.

Running fluentd with a local container running Elastic Search

Docker supports linking named containers together, allowing IPs and ports to be automatically configured from random values. Let's assume ElasticSearch is running in another docker container:

# docker run -d --name=elasticsearch dockerfile/elasticsearch

That container has the name elasticsearch and has the ports 9200 and 9300 exposed but not bound. We can link it to fluentd-elasticsearch:

# docker run -d -p 8888:8888 -p 24224:24224 --link elasticsearch:elasticsearch openfirmware/fluentd-elasticsearch

This will feed the IP and port from the elasticsearch container as default values instead of localhost and 9200.


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