Fluent Bit is distributed as the fluent-bit
package and is available for long-term
support releases of Ubuntu. The latest officially supported version is Noble Numbat
(24.04).
An installation script is provided for most Linux targets. This will always install the most recent version released.
curl https://raw.githubusercontent.com/fluent/fluent-bit/master/install.sh | sh
This is purely a convenience helper and should always be validated prior to use. The recommended secure deployment approach is to use the following instructions.
The first step is to add the Fluent Bit server GPG key to your keyring to ensure you can get the correct signed packages.
Follow the official Debian wiki guidance.
curl https://packages.fluentbit.io/fluentbit.key | gpg --dearmor > /usr/share/keyrings/fluentbit-keyring.gpg
For releases 1.9.0 and 1.8.15 and later, the GPG key has been updated. Ensure the new key 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 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.
On Ubuntu, 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. Ensure
CODENAME
is set to your specific Ubuntu release name.
For example, focal
for Ubuntu 20.04.
deb [signed-by=/usr/share/keyrings/fluentbit-keyring.gpg] https://packages.fluentbit.io/ubuntu/${CODENAME} ${CODENAME} main
Update the apt
database on your system:
sudo apt-get update
{% hint style="info" %} Fluent Bit recommends upgrading your system to avoid potential issues with expired certificates:
sudo apt-get upgrade
If you receive the error Certificate verification failed
, check if the package
ca-certificates
is properly installed:
sudo apt-get install ca-certificates
{% endhint %}
-
Use the following
apt-get
command to install the latest Fluent Bit:sudo apt-get install fluent-bit
-
Instruct
systemd
to enable the service:sudo systemctl start fluent-bit
If you do a status check, you should see a similar output like this:
systemctl status fluent-bit
● 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.