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Raspberry Pi

Fluent Bit is distributed as the fluent-bit package and is available for Raspberry Pi. The following versions are supported:

  • Raspbian Bookworm (12)
  • Raspbian Bullseye (11)
  • Raspbian Buster (10)

Server GPG key

The first step is to add the Fluent Bit server GPG key to your keyring so you can get FLuent Bit signed packages:

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

Updated key from March 2022

For the 1.9.0 and 1.8.15 and later releases, the GPG key has been updated. 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) <releases@fluentbit.io>

The previous key is still available and might 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 the Fluent Bit APT server entry to your sources lists.

Add the following content at bottom of your /etc/apt/sources.list file.

Raspbian 12 (Bookworm)

echo "deb https://packages.fluentbit.io/raspbian/bookworm bookworm main" | sudo tee /etc/apt/sources.list.d/fluent-bit.list

Raspbian 11 (Bullseye)

echo "deb https://packages.fluentbit.io/raspbian/bullseye bullseye main" | sudo tee /etc/apt/sources.list.d/fluent-bit.list

Raspbian 10 (Buster)

echo "deb https://packages.fluentbit.io/raspbian/buster buster main" | sudo tee /etc/apt/sources.list.d/fluent-bit.list

Update your repositories database

Now let your system update the apt database:

sudo apt-get update

{% hint style="info" %}

Fluent Bit recommends upgrading your system (sudo apt-get upgrade) to avoid potential issues with expired certificates.

{% endhint %}

Install Fluent Bit

  1. Use the following apt-get command to install the latest Fluent Bit:

    sudo apt-get install fluent-bit

  2. 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 collects metrics for CPU usage and sends the records to the standard output. You can see the outgoing data in your /var/log/syslog file.