Redhat / CentOS

Install on Red Hat Enterprise Linux/CentOS

Calyptia Fluent Bit is distributed as calyptia-fluent-bit package and is available for the latest stable RHEL and CentOS architectures. The following architectures are supported

• x86_64

• aarch64 / arm64v8

For CentOS 9+ we use CentOS Stream as the canonical base system.

Single line install

A simple installation script is provided to be used for most Linux targets. This will always install the most recent version released.

curl -L https://github.com/calyptia/lts-notifications/releases/latest/download/install-package.sh| sh

This is purely a convenience helper and should always be validated prior to use. The recommended secure deployment approach is to follow the instructions below.

CentOS 8

CentOS 8 is now EOL so the default Yum repositories are unavailable.

Make sure to configure to use an appropriate mirror, for example:

$ sed -i 's/mirrorlist/#mirrorlist/g' /etc/yum.repos.d/CentOS-* && \
  sed -i 's|#baseurl=http://mirror.centos.org|baseurl=http://vault.centos.org|g' /etc/yum.repos.d/CentOS-*

Signature Check

Calyptia packages are all signed via the calyptia.key that are included as part of your repositories. You can check the signatures by using the built-in rpm tool

Import Calyptia Key**

rpm --import calyptia.key

Check Signature

rpm -K <package>

Configure Yum

We provide calyptia-fluent-bit through a Yum repository. In order to add the repository reference to your system, please add a new file called package-centos.repo_ in /etc/yum.repos.d/ with the following content:

[calyptia-fluent-bit]
name = Calyptia Fluent Bit
baseurl = https://calyptia-lts-release-standard.s3.amazonaws.com/linux/23.4.1/package-centos-[YOUR VERSION_ID]
gpgcheck=1
gpgkey=https://calyptia-lts-release-standard.s3.amazonaws.com/linux/23.4.1/calyptia.key
repo_gpgcheck=1
enabled=1

It is best practice to always enable the gpgcheck and repo_gpgcheck for security reasons. We sign our repository metadata as well as all of our packages.

Install

Once your repository is configured, run the following command to install it:

sudo yum install calyptia-fluent-bit

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

sudo service calyptia-fluent-bit start

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

● calyptia-fluent-bit.service - Calyptia Fluent Bit
   Loaded: loaded (/usr/lib/systemd/system/calyptia-fluent-bit.service; enabled; vendor preset: disabled)
   Active: active (running) since Thu 2023-06-08 15:55:03 UTC; 9s ago
     Docs: https://docs.fluentbit.io/manual/
 Main PID: 16631 (calyptia-fluent)
   CGroup: /system.slice/calyptia-fluent-bit.service
           └─16631 /opt/calyptia-fluent-bit/bin/calyptia-fluent-bit -c //etc/calyptia-fluent-bit/calyptia-fluent-bit.conf

The default configuration of calyptia-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/messages file.