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Installing Fluentd on RHE...
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Installing Fluentd on RHEL and CentOS

td-agent was discontinued in December 2023 and has been replaced by fluent-package. The fluent-package is the official successor maintained by the Cloud Native Computing Foundation.

fluent-package is a stable distribution package of Fluentd. Learn more about the difference between Fluentd and fluent-package.

Prerequisites

It's highly recommended that you set up ntpd on the nodes to sync the clock. Otherwise, the logs could contain invalid timestamps.

Install fluent-package

You can install fluent-package using the following methods. We recommend using fluent-package 6 LTS as this is the currently maintained version.

RHEL/CentOS/Rocky Linux

RHEL 8, 9 and compatible distributions (Rocky Linux, AlmaLinux) 64-bit are currently supported.

Executing the installation script automatically installs fluent-package on your machine. The shell script registers a new rpm repository and installs the fluent-package rpm package.

# fluent-package 6 LTS (recommended)
curl -fsSL https://fluentd.cdn.cncf.io/sh/install-redhat-fluent-package6-lts.sh | sh

Launch Daemon

fluent-package uses systemd to manage the service.

systemd

The systemd service script is provided to start, stop, or restart the agent.

sudo systemctl start fluentd.service
sudo systemctl status fluentd.service

Example output:

● fluentd.service - fluentd: Fluentd based data collector
   Loaded: loaded (/usr/lib/systemd/system/fluentd.service; disabled; vendor preset: disabled)
   Active: active (running) since Thu 2024-01-01 15:12:27 PST; 6min ago
     Docs: https://docs.fluentd.org/
  Process: 53192 ExecStart=/opt/fluent/bin/fluentd --config /etc/fluent/fluentd.conf
 Main PID: 53198 (fluentd)
   CGroup: /system.slice/fluentd.service
           └─53198 /opt/fluent/bin/ruby /opt/fluent/bin/fluentd --config /etc/fluent/fluentd.conf

If you want to customize systemd behavior, put your fluentd.service into /etc/systemd/system.

The following commands are supported:

sudo systemctl start fluentd.service
sudo systemctl stop fluentd.service
sudo systemctl restart fluentd.service
sudo systemctl status fluentd.service

Make sure your configuration file is located at /etc/fluent/fluentd.conf.

Other Resources

For more information, see the Fluentd Documentation.

For those who are using Treasure Data, refer to the following document:

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