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:
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 so ensure this new one is added.
The GPG Key fingerprint of the new key is:
The previous key is still available at and may be required to install previous versions.
The GPG Key fingerprint of the old key is:
Refer to the 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)
Raspbian 10 (Buster)
Update your repositories database
Now let your system update the apt database:
We recommend upgrading your system (sudo apt-get upgrade). This could avoid potential issues with expired certificates.
Install Fluent Bit
Using the following apt-get command you are able now to install the latest fluent-bit:
Now the following step is to instruct systemd to enable the service:
If you do a status check, you should see a similar output like this:
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.