Fluentd is an open source data collector, which lets you unify the data collection and consumption for a better use and understanding of data.
These tags have image version postfix. This updates many places so we need feedback for improve/fix the images.
Current images use fluentd v1 serise.
v1.7.3-1.0,v1.7-1,edge(v1.7/alpine/Dockerfile)v1.7.3-debian-1.0,v1.7-debian-1,edge-debian(v1.7/debian/Dockerfile)v1.7.3-windows-1.0,v1.7-windows-1(v1.7/windows/Dockerfile)
This is for backward compatibility. Use "Current images" instead.
v1.4.2-2.0,v1.4-2(v1.4/alpine/Dockerfile)v1.4.2-onbuild-2.0,v1.4-onbuild-2(v1.4/alpine-onbuild/Dockerfile)v1.4.2-debian-2.0,v1.4-debian-2(v1.4/debian/Dockerfile)v1.4.2-debian-onbuild-2.0,v1.4-debian-onbuild-2,edge-debian-onbuild(v1.4/debian-onbuild/Dockerfile)v1.4.2-windows-2.0,v1.4-windows-2(v1.4/windows/Dockerfile)
v0.12.43-2.0,v0.12-2(v0.12/alpine/Dockerfile)v0.12.43-onbuild-2.0,v0.12-onbuild-2(v0.12/alpine-onbuild/Dockerfile)v0.12.43-debian-2.0,v0.12-debian-2(v0.12/debian/Dockerfile)v0.12.43-debian-onbuild-2.0,v0.12-debian-onbuild-2(v0.12/debian-onbuild/Dockerfile)
You can use older versions via tag. See tag page on Docker Hub.
We recommend to use debian version for production because it uses jemalloc to mitigate memory fragmentation issue.
Check fluentd-kubernetes-daemonset images.
This image is based on the popular Alpine Linux project, available in the alpine official image, and Debian images.
Latest released version of Fluentd. This tag is mainly for testing.
Latest version of vX.Y Fluentd branch.
A will be incremented when image has major changes.
When fluentd version is updated, A is reset to 1.
Concrete vX.Y.Z version of Fluentd. This tag is recommeded for the production environment.
A will be incremented when image has major changes.
B will be incremented when image has small changes, e.g. library update or bug fixes.
When fluentd version is updated, A.B is reset to 1.0.
onbuild images are deprecated. Use non-onbuild images instead to build your image.
New images, v1.5 or later, don't provide onbuild version.
The image based on Debian Linux image.
You may use this image when you require plugins which cannot be installed on Alpine (like fluent-plugin-systemd).
The armhf images use ARM base images for use on devices such as Raspberry Pis.
Furthermore, the base images enable support for cross-platform builds using the cross-build tools from resin.io.
In order to build these images natively on ARM devices, the CROSS_BUILD_START and CROSS_BUILD_END Docker build arguments must be set to the shell no-op (:), for example:
docker build --build-arg CROSS_BUILD_START=":" --build-arg CROSS_BUILD_END=":" -t fluent/fluentd:v1.3-onbuild-1 v1.3/armhf/alpine-onbuild(assuming the command is run from the root of this repository).
These images/tags are kept for backward compatibility. No update anymore and don't use for new deployment. Use "current images" instead.
Latest version of stable Fluentd branch (currently v1.3-1).
Latest version of vX.Y Fluentd branch.
Concrete vX.Y.Z version of Fluentd.
Same as current images.
To create endpoint that collects logs on your host just run:
docker run -d -p 24224:24224 -p 24224:24224/udp -v /data:/fluentd/log fluent/fluentd:v1.3-debian-1Default configurations are to:
- listen port
24224for Fluentd forward protocol - store logs with tag
docker.**into/fluentd/log/docker.*.log(and symlinkdocker.log) - store all other logs into
/fluentd/log/data.*.log(and symlinkdata.log)
fluentd arguments can be appended to the docker run line
For example, to provide a bespoke config and make fluentd verbose, then:
docker run -ti --rm -v /path/to/dir:/fluentd/etc fluentd -c /fluentd/etc/<conf> -v
The first -v tells Docker to share '/path/to/dir' as a volume and mount it at /fluentd/etc
The -c after the container name (fluentd) tells fluentd where to find the config file
The second -v is passed to fluentd to tell it to be verbose
Use -u option with docker run.
docker run -p 24224:24224 -u foo -v ...
You can build a customized image based on Fluentd's onbuild image.
Customized image can include plugins and fluent.conf file.
We will use this directory to build a Docker image. Type following commands on a terminal to prepare a minimal project first:
# Create project directory.
mkdir custom-fluentd
cd custom-fluentd
# Download default fluent.conf. This file will be copied to the new image.
# VERSION is v1.4 or v0.12 like fluentd version and OS is alpine or debian.
# Full example is https://raw.githubusercontent.com/fluent/fluentd-docker-image/master/v1.4/debian-onbuild/fluent.conf
curl https://raw.githubusercontent.com/fluent/fluentd-docker-image/master/VERSION/OS-onbuild/fluent.conf > fluent.conf
# Create plugins directory. plugins scripts put here will be copied to the new image.
mkdir plugins
curl https://raw.githubusercontent.com/fluent/fluentd-docker-image/master/Dockerfile.sample > DockerfileDocumentation of fluent.conf is available at docs.fluentd.org.
You can install Fluentd plugins using Dockerfile.
Sample Dockerfile installs fluent-plugin-elasticsearch.
To add plugins, edit Dockerfile as following:
FROM fluent/fluentd:v1.7-1
# Use root account to use apk
USER root
# below RUN includes plugin as examples elasticsearch is not required
# you may customize including plugins as you wish
RUN apk add --no-cache --update --virtual .build-deps \
sudo build-base ruby-dev \
&& sudo gem install fluent-plugin-elasticsearch \
&& sudo gem sources --clear-all \
&& apk del .build-deps \
&& rm -rf /tmp/* /var/tmp/* /usr/lib/ruby/gems/*/cache/*.gem
COPY fluent.conf /fluentd/etc/
COPY entrypoint.sh /bin/
USER fluentFROM fluent/fluentd:v1.7-debian-1
# Use root account to use apt
USER root
# below RUN includes plugin as examples elasticsearch is not required
# you may customize including plugins as you wish
RUN buildDeps="sudo make gcc g++ libc-dev" \
&& apt-get update \
&& apt-get install -y --no-install-recommends $buildDeps \
&& sudo gem install fluent-plugin-elasticsearch \
&& sudo gem sources --clear-all \
&& SUDO_FORCE_REMOVE=yes \
apt-get purge -y --auto-remove \
-o APT::AutoRemove::RecommendsImportant=false \
$buildDeps \
&& rm -rf /var/lib/apt/lists/* \
&& rm -rf /tmp/* /var/tmp/* /usr/lib/ruby/gems/*/cache/*.gem
COPY fluent.conf /fluentd/etc/
COPY entrypoint.sh /bin/
USER fluentThese example run apk add/apt-get install to be able to install
Fluentd plugins which require native extensions (they are removed immediately
after plugin installation).
If you're sure that plugins don't include native extensions, you can omit it
to make image build faster.
FROM fluent/fluentd:v1.3-onbuild-1
# below RUN includes plugin as examples elasticsearch is not required
# you may customize including plugins as you wish
RUN apk add --no-cache --update --virtual .build-deps \
sudo build-base ruby-dev \
&& sudo gem install \
fluent-plugin-elasticsearch \
&& sudo gem sources --clear-all \
&& apk del .build-deps \
&& rm -rf /tmp/* /var/tmp/* /usr/lib/ruby/gems/*/cache/*.gemFROM fluent/fluentd:v1.3-debian-onbuild-1
# below RUN includes plugin as examples elasticsearch is not required
# you may customize including plugins as you wish
RUN buildDeps="sudo make gcc g++ libc-dev ruby-dev" \
&& apt-get update \
&& apt-get install -y --no-install-recommends $buildDeps \
&& sudo gem install \
fluent-plugin-elasticsearch \
&& sudo gem sources --clear-all \
&& SUDO_FORCE_REMOVE=yes \
apt-get purge -y --auto-remove \
-o APT::AutoRemove::RecommendsImportant=false \
$buildDeps \
&& rm -rf /var/lib/apt/lists/* \
&& rm -rf /tmp/* /var/tmp/* /usr/lib/ruby/gems/*/cache/*.gemUse docker build command to build the image.
This example names the image as custom-fluentd:latest:
docker build -t custom-fluentd:latest ./Once the image is built, it's ready to run.
Following commands run Fluentd sharing ./log directory with the host machine:
mkdir -p log
docker run -it --rm --name custom-docker-fluent-logger -v $(pwd)/log:/fluentd/log custom-fluentd:latestOpen another terminal and type following command to inspect IP address. Fluentd is running on this IP address:
docker inspect -f '{{.NetworkSettings.IPAddress}}' custom-docker-fluent-loggerLet's try to use another docker container to send its logs to Fluentd.
docker run --log-driver=fluentd --log-opt tag="docker.{{.ID}}" --log-opt fluentd-address=FLUENTD.ADD.RE.SS:24224 python:alpine echo Hello
# and force flush buffered logs
docker kill -s USR1 custom-docker-fluent-logger(replace FLUENTD.ADD.RE.SS with actual IP address you inspected at
the previous step)
You will see some logs sent to Fluentd.
Fluentd logging driver - Docker Docs
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If you have any problems with or questions about this image, please contact us through a GitHub issue.