# Install By Deb This article explains how to install the td-agent deb package, the stable Fluentd distribution package maintained by [Treasure Data, Inc](http://www.treasuredata.com/). ## What is td-agent? Fluentd is written in Ruby for flexibility, with performance sensitive parts written in C. However, some users may have difficulty installing and operating a Ruby daemon. That's why [Treasure Data, Inc](http://www.treasuredata.com/) is providing **the stable community distribution of Fluentd**, called `td-agent`. The differences between Fluentd and td-agent can be found [here](https://www.fluentd.org/faqs). Currently, td-agent 2 deb has two versions, td-agent 2.5 / td-agent 2.3. The different point is bundled ruby version. td-agent 2.5 or later uses ruby 2.5 and td-agent 2.3 or earlier uses ruby 2.1. ruby 2.1 is EOL so we recommend to use td-agent 2.5 for new deployment. td-agent 2.5 and td-agent 2.3 use fluentd v0.12 serise so the behaviour is same. ## Step 0: Before Installation Please follow the [Preinstallation Guide](https://docs.fluentd.org/0.12/articles/before-install) to configure your OS properly. This will prevent many unnecessary problems. ## Step 1 : Install from Apt Repository For Ubuntu, we currently support "Ubuntu 18.04 LTS / Bionic 64bit", "Ubuntu 16.04 LTS / Xenial 64bit", "Ubuntu 14.04 LTS / Trusty 64bit/32bit", "Ubuntu 12.04 LTS / Precise 64bit/32bit", "Ubuntu 10.04 LTS / Lucid 64bit/32bit". For Debian, we currently support Jessie, Wheezy and Squeeze. There is no 32bit packages for Debian. We might not provide td-agent for older distributions. For example, we don't provide latest td-agent version for squeeze and lucid for now. A shell script is provided to automate the installation process for each version. The shell script registers a new apt repository at `/etc/apt/sources.list.d/treasure-data.list` and installs the `td-agent` deb package. For Bionic, ``` curl -L https://toolbelt.treasuredata.com/sh/install-ubuntu-bionic-td-agent2.5.sh | sh ``` For Xenial, ``` # td-agent 2.5 or later curl -L https://toolbelt.treasuredata.com/sh/install-ubuntu-xenial-td-agent2.5.sh | sh # td-agent 2.3 or earlier curl -L https://toolbelt.treasuredata.com/sh/install-ubuntu-xenial-td-agent2.sh | sh ``` For Trusty, ``` # td-agent 2.5 or later curl -L https://toolbelt.treasuredata.com/sh/install-ubuntu-trusty-td-agent2.5.sh | sh # td-agent 2.3 or earlier curl -L https://toolbelt.treasuredata.com/sh/install-ubuntu-trusty-td-agent2.sh | sh ``` For Precise, ``` curl -L https://toolbelt.treasuredata.com/sh/install-ubuntu-precise-td-agent2.sh | sh ``` For Lucid, ``` curl -L https://toolbelt.treasuredata.com/sh/install-ubuntu-lucid-td-agent2.sh | sh ``` For Debian Stretch, ``` curl -L https://toolbelt.treasuredata.com/sh/install-debian-stretch-td-agent2.sh | sh ``` For Debian Jessie, ``` curl -L https://toolbelt.treasuredata.com/sh/install-debian-jessie-td-agent2.sh | sh ``` For Debian Wheezy, ``` curl -L https://toolbelt.treasuredata.com/sh/install-debian-wheezy-td-agent2.sh | sh ``` For Debian Squeeze, ``` curl -L https://toolbelt.treasuredata.com/sh/install-debian-squeeze-td-agent2.sh | sh ``` It's HIGHLY recommended that you set up **ntpd** on the node to prevent invalid timestamps in your logs. Please check the [Preinstallation Guide](https://docs.fluentd.org/0.12/articles/before-install). ## Step2: Launch Daemon The `/etc/init.d/td-agent` script is provided to start, stop, or restart the agent. ``` $ sudo /etc/init.d/td-agent restart $ sudo /etc/init.d/td-agent status td-agent (pid 21678) is running... ``` The following commands are supported: ``` $ sudo /etc/init.d/td-agent start $ sudo /etc/init.d/td-agent stop $ sudo /etc/init.d/td-agent restart $ sudo /etc/init.d/td-agent status ``` Please make sure **your configuration file** is located at `/etc/td-agent/td-agent.conf`. ## Step3: Post Sample Logs via HTTP By default, `/etc/td-agent/td-agent.conf` is configured to take logs from HTTP and route them to stdout (`/var/log/td-agent/td-agent.log`). You can post sample log records using the curl command. ``` $ curl -X POST -d 'json={"json":"message"}' http://localhost:8888/debug.test ``` ## Next Steps You're now ready to collect your real logs using Fluentd. Please see the following tutorials to learn how to collect your data from various data sources. * Basic Configuration * [Config File](https://docs.fluentd.org/0.12/configuration/config-file) * Application Logs * [Ruby](https://docs.fluentd.org/0.12/articles/ruby), [Java](https://docs.fluentd.org/0.12/articles/java), [Python](https://docs.fluentd.org/0.12/articles/python), [PHP](https://docs.fluentd.org/0.12/articles/php), [Perl](https://docs.fluentd.org/0.12/articles/perl), [Node.js](https://docs.fluentd.org/0.12/articles/nodejs), [Scala](https://docs.fluentd.org/0.12/articles/scala) * Examples * [Store Apache Log into Amazon S3](https://docs.fluentd.org/0.12/articles/apache-to-s3) * [Store Apache Log into MongoDB](https://docs.fluentd.org/0.12/articles/apache-to-mongodb) * [Data Collection into HDFS](https://docs.fluentd.org/0.12/articles/http-to-hdfs) Please refer to the resources below for further steps. * [ChangeLog of td-agent](https://docs.treasuredata.com/display/public/PD/The+td-agent+Change+Log) * [Chef Cookbook](https://github.com/treasure-data/chef-td-agent/) If this article is incorrect or outdated, or omits critical information, please [let us know](https://github.com/fluent/fluentd-docs-gitbook/issues?state=open). 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