Hi users and developers!
We announce the dropping schedule for TD Agent 4 development.
Since td-agent 4.0.0 was released in 2020, td-agent 4 has been maintained for a long time.
As new major version of td-agent 4 was rebranded (to fluent-package v5), and released in August 2023,
we decided to stop maintaining td-agent 4.
As you know, already stepping down maintenance activity, new minor update for td-agent 4 will not be shipped anymore. (td-agent v4.5.1 will be the last release of this series, it will be shipped in this month.)
Thus, we recommend using fluent-package v5 for new deployment :)
There is a good article to do it.
Follow the above instructions.
fluent-package "v5" is available since August 2023.
fluent-package is the successor of td-agent "v4".
In this post, we will share the steps we've tested and hopefully this will help your experience from v4 to v5.
fluent-package was formerly known as td-agent.
In the past, Treasure Data, Inc took the initiative to provide the package, but now the Fluentd community does it. This is why the package name was changed.
To represent "All in one package of Fluentd which contains Fluentd and related gem packages", the package name was changed to fluent-package.
Even though package name was changed, Treasure Data, Inc still sponsor the package delivery resources.
There are two channels for fluent-package.
One is normal release version which will be updated regularly - rapid release development style (td-agent v4 was released like this in almost every quarter).
In this version, fluentd will be eventually updated to newer minor version (e.g. 1.17.x and so on)
The other is a more conservative maintenance version (Long Term Support) which will not introduce a new feature. It only applies teeny update such as security or bug fix only. LTS for v5 will be supported until March, 2025.
More details about difference between normal release version and LTS version will be explained in Scheduled support lifecycle announcement about Fluent Package.
In the fluent-package v5, core components like ruby (2.7.8 -> 3.2.2) and OpenSSL (1.1.1 -> 3.1.0 for Windows, 3.0.8 for macOS) were updated.
The major changes are as follows.
td-agent command is renamed to fluentd.
$ td-agent --version -> $ fluentd --versiontd-agent-gem command is renamed to fluent-gem.
$ td-agent-gem list -> $ fluent-gem listtd-agent is renamed to fluentd.
$ systemctl status td-agent -> $ systemctl status fluentdWith the change of package name, install path, service name (e.g. /opt/fluent, fluentd.service) and so on were also changed.
Basically, for td-agent v4 users, it aims to keep compatibility as far as possible by executing the migration process with copying old files or providing
symbolic links for it.
If you want to know the details of upgraded components, see CHANGELOG.md.
NOTE: We explain for platform specific issue as "Additional hints for v4 users" section below.
During the upgrade process, plugins bundled in td-agent are automatically upgraded. With that being said, other plugins added on your own are not included. You should review if you need to upgrade plugins since some directory structures from v4 and v5 are changed.
In this post, I will show steps with plugins added on my own, "fluent-plugin-concat" for instance. Here is sample configuration file I used through steps.
<filter docker.log>
@type concat
key message
multiline_start_regexp /^Start/
</filter>
$ td-agent-gem list | grep fluent-plugin*
fluent-plugin-calyptia-monitoring (0.1.3)
fluent-plugin-concat (2.5.0)
fluent-plugin-elasticsearch (5.3.0)
fluent-plugin-flowcounter-simple (0.1.0)
fluent-plugin-kafka (0.19.0)
fluent-plugin-metrics-cmetrics (0.1.2)
fluent-plugin-opensearch (1.1.0)
fluent-plugin-prometheus (2.0.3)
fluent-plugin-prometheus_pushgateway (0.1.0)
fluent-plugin-record-modifier (2.1.1)
fluent-plugin-rewrite-tag-filter (2.4.0)
fluent-plugin-s3 (1.7.2)
fluent-plugin-sd-dns (0.1.0)
fluent-plugin-systemd (1.0.5)
fluent-plugin-td (1.2.0)
fluent-plugin-utmpx (0.5.0)
fluent-plugin-webhdfs (1.5.0)
You can also find installed plugins under /opt/td-agent/lib/ruby/gems/2.7.0/gems/ directories.
$ ls -l /opt/td-agent/lib/ruby/gems/2.7.0/gems |grep fluent-plugin*
drwxr-xr-x. 5 root root 175 7月 14 03:01 fluent-plugin-calyptia-monitoring-0.1.3
drwxr-xr-x. 4 root root 206 7月 14 03:03 fluent-plugin-concat-2.5.0
drwxr-xr-x. 5 root root 4096 7月 14 03:01 fluent-plugin-elasticsearch-5.3.0
drwxr-xr-x. 4 root root 205 7月 14 03:01 fluent-plugin-flowcounter-simple-0.1.0
drwxr-xr-x. 6 root root 191 7月 14 03:01 fluent-plugin-kafka-0.19.0
drwxr-xr-x. 5 root root 190 7月 14 03:01 fluent-plugin-metrics-cmetrics-0.1.2
drwxr-xr-x. 5 root root 4096 7月 14 03:01 fluent-plugin-opensearch-1.1.0
drwxr-xr-x. 5 root root 215 7月 14 03:01 fluent-plugin-prometheus-2.0.3
drwxr-xr-x. 6 root root 238 7月 14 03:01 fluent-plugin-prometheus_pushgateway-0.1.0
drwxr-xr-x. 4 root root 176 7月 14 03:01 fluent-plugin-record-modifier-2.1.1
drwxr-xr-x. 3 root root 210 7月 14 03:01 fluent-plugin-rewrite-tag-filter-2.4.0
drwxr-xr-x. 5 root root 230 7月 14 03:01 fluent-plugin-s3-1.7.2
drwxr-xr-x. 3 root root 170 7月 14 03:01 fluent-plugin-sd-dns-0.1.0
drwxr-xr-x. 3 root root 49 7月 14 03:01 fluent-plugin-systemd-1.0.5
drwxr-xr-x. 5 root root 221 7月 14 03:01 fluent-plugin-td-1.2.0
drwxr-xr-x. 5 root root 166 7月 14 03:01 fluent-plugin-utmpx-0.5.0
drwxr-xr-x. 4 root root 191 7月 14 03:01 fluent-plugin-webhdfs-1.5.0
$ sudo systemctl stop td-agent
Even though fluent-package supports upgrade without stopping service, but recommend to stop explicitly.
When you use RedHat or derivative distributions, you can run following script if you want to install normal release version of fluent-package.
# curl -L https://toolbelt.treasuredata.com/sh/install-redhat-fluent-package5.sh | sh
When you use RedHat or derivative distributions, you can run following script if you want to install LTS (Long term support) version of fluent-package.
# curl -L https://toolbelt.treasuredata.com/sh/install-redhat-fluent-package5-lts.sh | sh
You can find more information about the installation script in Fluend Doc - Installation.
$ LANG=C yum info fluent-package
Loaded plugins: fastestmirror
Loading mirror speeds from cached hostfile
* base: ftp.riken.jp
* extras: ftp.riken.jp
* updates: ftp.riken.jp
Installed Packages
Name : fluent-package
Arch : x86_64
Version : 5.0.0
Release : 1.el7
Size : 64 M
Repo : installed
From repo : /fluent-package-5.0.0-1.el7.x86_64
Summary : The stable distribution of Fluentd
URL : https://www.treasuredata.com/
License : ASL 2.0
Description : The stable distribution of Fluentd, called td-agent.
$ sudo systemctl daemon-reload
$ sudo systemctl enable --now fluentd
$ fluent-gem list |grep fluent-plugin*
fluent-plugin-calyptia-monitoring (0.1.3)
fluent-plugin-elasticsearch (5.3.0)
fluent-plugin-flowcounter-simple (0.1.0)
fluent-plugin-kafka (0.19.0)
fluent-plugin-metrics-cmetrics (0.1.2)
fluent-plugin-opensearch (1.1.0)
fluent-plugin-prometheus (2.0.3)
fluent-plugin-prometheus_pushgateway (0.1.0)
fluent-plugin-record-modifier (2.1.1)
fluent-plugin-rewrite-tag-filter (2.4.0)
fluent-plugin-s3 (1.7.2)
fluent-plugin-sd-dns (0.1.0)
fluent-plugin-systemd (1.0.5)
fluent-plugin-td (1.2.0)
fluent-plugin-utmpx (0.5.0)
fluent-plugin-webhdfs (1.5.0)
You can see bundled plugins are upgraded as well but can not find plugins added on your own. In this post, added plugin was "fluent-plugin-concat" and it is not shown in installed list.
$ sudo fluent-gem install fluent-plugin-concat
$ fluent-gem list | grep fluent-plugin*
fluent-plugin-calyptia-monitoring (0.1.3)
fluent-plugin-concat (2.5.0)
fluent-plugin-elasticsearch (5.3.0)
fluent-plugin-flowcounter-simple (0.1.0)
fluent-plugin-kafka (0.19.0)
fluent-plugin-metrics-cmetrics (0.1.2)
fluent-plugin-opensearch (1.1.0)
fluent-plugin-prometheus (2.0.3)
fluent-plugin-prometheus_pushgateway (0.1.0)
fluent-plugin-record-modifier (2.1.1)
fluent-plugin-rewrite-tag-filter (2.4.0)
fluent-plugin-s3 (1.7.2)
fluent-plugin-sd-dns (0.1.0)
fluent-plugin-systemd (1.0.5)
fluent-plugin-td (1.2.0)
fluent-plugin-utmpx (0.5.0)
fluent-plugin-webhdfs (1.5.0)
As for fluent-package v5, "fluent-plugin-concat" was installed under "/opt/fluent/lib/ruby/gems/3.2.0/gems/" directories.
$ ls -l /opt/fluent/lib/ruby/gems/3.2.0/gems/ |grep fluent-plugin*
drwxr-xr-x. 5 root root 175 7月 14 03:14 fluent-plugin-calyptia-monitoring-0.1.3
drwxr-xr-x. 4 root root 206 7月 14 03:16 fluent-plugin-concat-2.5.0
drwxr-xr-x. 5 root root 4096 7月 14 03:14 fluent-plugin-elasticsearch-5.3.0
drwxr-xr-x. 4 root root 205 7月 14 03:14 fluent-plugin-flowcounter-simple-0.1.0
drwxr-xr-x. 6 root root 191 7月 14 03:14 fluent-plugin-kafka-0.19.0
drwxr-xr-x. 5 root root 190 7月 14 03:14 fluent-plugin-metrics-cmetrics-0.1.2
drwxr-xr-x. 5 root root 4096 7月 14 03:14 fluent-plugin-opensearch-1.1.0
drwxr-xr-x. 5 root root 215 7月 14 03:14 fluent-plugin-prometheus-2.0.3
drwxr-xr-x. 6 root root 238 7月 14 03:14 fluent-plugin-prometheus_pushgateway-0.1.0
drwxr-xr-x. 4 root root 176 7月 14 03:14 fluent-plugin-record-modifier-2.1.1
drwxr-xr-x. 3 root root 210 7月 14 03:14 fluent-plugin-rewrite-tag-filter-2.4.0
drwxr-xr-x. 5 root root 230 7月 14 03:14 fluent-plugin-s3-1.7.2
drwxr-xr-x. 3 root root 170 7月 14 03:14 fluent-plugin-sd-dns-0.1.0
drwxr-xr-x. 3 root root 49 7月 14 03:14 fluent-plugin-systemd-1.0.5
drwxr-xr-x. 5 root root 221 7月 14 03:14 fluent-plugin-td-1.2.0
drwxr-xr-x. 5 root root 166 7月 14 03:14 fluent-plugin-utmpx-0.5.0
drwxr-xr-x. 4 root root 191 7月 14 03:14 fluent-plugin-webhdfs-1.5.0
$ sudo systemctl start fluentd
$ tail -100f /var/log/fluent/fluentd.log
Now, upgrading steps are completed. Happy Logging!
fluentd-apt-source package will be marked as a transitional package.
you can remove it safely with sudo apt purge fluentd-apt-source.td-agent.service, you must explicitly execute the following commands: $ sudo systemctl unmask td-agent
$ sudo systemctl enable fluentd
td-agent.service, you must explicitly execute the following command: $ sudo systemctl enable fluentd
fluent-package installer was changed not to start service by default.
If you want to start fluentd as a service, execute the following command with administrator privileges. c:\opt\fluent> net start fluentdwinsvc
WARNING: Currently we have no plan to officially support dmg version of fluent-package yet.
It is just modified to be a minimally buildable state, it is for testing purpose only.
Hi users!
We have released td-agent v4.5.0. td-agent is a stable distribution package of Fluentd.
We are preparing next major version of td-agent which bundles Ruby 3.2. It's still work in progerss, we'll announce it as soon as we are ready for it.
Please note that the package name will be changed to fluent-package.
Please see the following discussion for more detail: https://github.com/fluent/fluentd/discussions/3860
Please see the download page.
Hi users!
We have released td-agent v4.4.2. td-agent is a stable distribution package of Fluentd.
<worker 0-N> directive!include directive in YAML config formatPlease see the download page.
Hi users!
We have released td-agent v4.4.1. td-agent is a stable distribution package of Fluentd.
--daemon flagandchunklimit_size`Please see the download page.
Hi users!
We have released td-agent v4.4.0. td-agent is a stable distribution package of Fluentd.
TD_AGENT_OPTIONS= from td-agent.service.
Instead it's loaded from /etc/sysconfig/td-agent (rpm) or /etc/default/td-agent (deb).Please see ChangeLog for more detail.
Please see the download page.
We have released td-agent v4.3.2. This release is mainly for supporting new distributions released in 2022Q2. We choose Ruby 3.1 to bundle for such new distributions to adopt to recent environment such as OpenSSL 3.0. For other distributions, we still use Ruby 2.7. We'll migrate to Ruby 3 completely after Ruby 3.2 is released.
Please see the download page.
We have released td-agent v4.3.1.1 for Windows. This version is a bug fix release of v4.3.1 only for Windows platform.
Please see the download page.
Hi users!
We have released td-agent v4.3.1. td-agent is a stable distribution package of Fluentd.
Please see ChangeLog for more detail.
Please see the download page.
Although Ubuntu 22.04 LTS (Jammy Jellyfish) is already released, we don't yet provide the official td-agent package for it. An experimental package which bundles Ruby 3.1 is work in progress.
Hi users and developers!
We announce the dropping schedule for TD Agent 3 development.
Since td-agent 3.0.0 was released in 2017, td-agent 3 had been maintained for a long time.
As new major version of td-agent 4 was released in August 2020, and several updates was shipped, we decided to stop maintaining td-agent 3.
As you know, already stepping down maintenance activity, new minor update for td-agent 3 will not be shipped anymore.
Thus, we recommend to use td-agent 4, latest fluentd v1 series, for new deployment :)
There is a good article to do it.
Follow the above instructions.
Fluentd is an open source data collector to simplify log management.
2024-08-29: Scheduled support lifecycle announcement about Fluent Package v6
2023-08-29: Drop schedule announcement about EOL of Treasure Agent (td-agent) 4
2023-08-29: Scheduled support lifecycle announcement about Fluent Package
2023-07-31: Upgrade to fluent-package v5
2025-05-16: fluent-package v5.0.7 has been released
2025-05-14: Fluentd v1.16.9 has been released
2025-05-01: Fluentd v1.16.8 has been released
2025-03-14: Drop Alpine and switch default to Debian for Fluentd docker image
2025-02-14: fluent-package v5.0.6 has been released
2025-01-29: Fluentd v1.16.7 has been released
2024-12-14: fluent-package v5.2.0 has been released
2024-11-29: Fluentd v1.18.0 has been released
2024-11-08: fluent-package v5.0.5 has been released
2024-08-29: Scheduled support lifecycle announcement about Fluent Package v6
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