fluentd
Fluentd Overview
Secure your stack with a hardened Fluentd image freshly-built by Minimus. Minimus images always include the most up-to-date package version for all packages and dependencies.
Use this image to set up your own logging infrastructure and manage your own log aggregation system. Fluentd is a log collector used to send structured log data to various destinations over a wide range of fluentd plugins. Fluentd is also one of Docker's official logging drivers.
Try It Out
In your project directory, create a file named demo.conf. This file is used to catch and parse log strings received by Fluentd.
Save the code below to the file demo.conf:
<source>
@type forward
port 24224
bind 0.0.0.0
</source>
<match **>
@type stdout
</match>Run the following from the project directory, to initiate a Fluentd container and listen for incoming log strings.
docker run -it \
-p 24224:24224 \
-v $(pwd)/demo.conf:/fluentd/etc/demo.conf \
-e FLUENT_CONF=/fluentd/etc/demo.conf \
reg.mini.dev/fluentdLeave this terminal open. We will use it to monitor incoming log strings.
Initiate a BusyBox container and send the message "Hello Fluentd" to the Fluentd logging monitor:
docker run \
--log-driver=fluentd \
reg.mini.dev/busybox:latest echo "Hello Fluentd"The Fluentd terminal should log an incoming string, such as:
2025-03-25 15:32:08.000000000 +0000 1297a706210e: {"log":"Hello Fluentd","container_id":"1297a706210ec83370dd17dda398c2e29b19819b9790e2fac8ac9c5241e7fc0e","container_name":"/stoic_feistel","source":"stdout"}Deploy via a Helm chart
Fluentd can also be deployed via Helm. See the related charts tab to get started.
Technical Considerations
The fluentd image provided by Minimus is a slim, security-hardened alternative to the public image from Docker Hub. The images are largely interchangeable, with a few differences as noted below.
Fluentd built by Minimus:
- Runs as non-root by default for a security-first approach that protects against privilege escalation attacks. The public image runs as root.
- Listens on but does not expose the default ports: 24224/tcp and 24224/udp. The public image exposes ports 24224/tcp and 5140/tcp by default.
- The image entrypoint is
/usr/bin/fluentd. The public image uses an entrypoint script. - Drill down on the version specification tab to see the default user, listening ports, entrypoint, volumes, environment variables, etc.
The Payoff
A hardened, minimal image that will remain more secure for the long run and accrue vulnerabilities at a slower rate.
- See the risk reduction dashboard for a detailed CVE comparison over the past 30 days.
- Review the compliance report to see the default hardening and security configurations for the image.
Terms & Info
Trademark
This catalog is published by Minimus. All product names, logos, and marks, other than those belonging to Minimus, shown are owned by their respective rights holders and appear here only to identify the open source software each image contains. Minimus claims no ownership of those marks and implies no affiliation with, endorsement by, certification by, or sponsorship by any rights holder.
Disclaimer
Images are provided "as-is" without warranty of any kind. "Hardened" refers to the security configuration applied at the time of build and does not constitute a guarantee of ongoing security or absence of vulnerabilities. The free tier is provided without support, SLA, or guaranteed patching timelines. Security updates may be applied to paid subscriptions before or instead of free tier images. By pulling or using any image you agree to our Terms of Use.