install fluent-bit

install

apt install gnupg1 curl lsb-release

cd /usr/share/keyrings/
# no exist
ls -lF fluent*
curl -s https://packages.fluentbit.io/fluentbit.key > fluentbit.asc
gpg1 --dearmor < fluentbit.asc > fluentbit.gpg

debian

# no exist
ls -lF /etc/apt/sources.list.d/fluentbit.list
cat > /etc/apt/sources.list.d/fluentbit.list <<EOF
deb [signed-by=/usr/share/keyrings/fluentbit.gpg] https://packages.fluentbit.io/debian/`lsb_release -cs` `lsb_release -cs` main
EOF

ubuntu

ls -lF /etc/apt/sources.list.d/fluentbit.list # no exist
cat > /etc/apt/sources.list.d/fluentbit.list <<EOF
deb [signed-by=/usr/share/keyrings/fluentbit.gpg] https://packages.fluentbit.io/ubuntu/`lsb_release -cs` `lsb_release -cs` main
EOF

shared

apt update
apt install fluent-bit

slackware

build from source

ready to go

you can now proceed with fluentbit setup

resources

https://docs.fluentbit.io/manual/installation/linux/debian

https://docs.fluentbit.io/manual/installation/kubernetes#installation

https://packages.fluentbit.io/