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Raspbian / Raspberry Pi

Fluent Bit is distributed as fluent-bit package and is available for the Raspberry, specifically for Raspbian distribution, the following versions are supported:

  • Raspbian Bullseye (11)
  • Raspbian Buster (10)

Server GPG key

The first step is to add our server GPG key to your keyring, on that way you can get our signed packages:

curl https://packages.fluentbit.io/fluentbit.key | sudo apt-key add -

Updated key from March 2022

From the 1.9.0 and 1.8.15 releases please note that the GPG key has been updated at https://packages.fluentbit.io/fluentbit.key so ensure this new one is added.

The GPG Key fingerprint of the new key is:

C3C0 A285 34B9 293E AF51  FABD 9F9D DC08 3888 C1CD
Fluentbit releases (Releases signing key) <[email protected]>

The previous key is still available at https://packages.fluentbit.io/fluentbit-legacy.key and may be required to install previous versions.

The GPG Key fingerprint of the old key is:

F209 D876 2A60 CD49 E680 633B 4FF8 368B 6EA0 722A

Refer to the supported platform documentation to see which platforms are supported in each release.

Update your sources lists

On Debian and derivative systems such as Raspbian, you need to add our APT server entry to your sources lists, please add the following content at bottom of your /etc/apt/sources.list file.

Raspbian 11 (Bullseye)

deb https://packages.fluentbit.io/raspbian/bullseye bullseye main

Raspbian 10 (Buster)

deb https://packages.fluentbit.io/raspbian/buster buster main

Update your repositories database

Now let your system update the apt database:

sudo apt-get update

{% hint style="info" %} We recommend upgrading your system (sudo apt-get upgrade). This could avoid potential issues with expired certificates. {% endhint %}

Install Fluent Bit

Using the following apt-get command you are able now to install the latest fluent-bit:

sudo apt-get install fluent-bit

Now the following step is to instruct systemd to enable the service:

sudo service fluent-bit start

If you do a status check, you should see a similar output like this:

sudo service fluent-bit status
● fluent-bit.service - Fluent Bit
   Loaded: loaded (/lib/systemd/system/fluent-bit.service; disabled; vendor preset: enabled)
   Active: active (running) since mié 2016-07-06 16:58:25 CST; 2h 45min ago
 Main PID: 6739 (fluent-bit)
    Tasks: 1
   Memory: 656.0K
      CPU: 1.393s
   CGroup: /system.slice/fluent-bit.service
           └─6739 /opt/fluent-bit/bin/fluent-bit -c /etc/fluent-bit/fluent-bit.conf
...

The default configuration of fluent-bit is collecting metrics of CPU usage and sending the records to the standard output, you can see the outgoing data in your /var/log/syslog file.