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Installation methods

You can install crowdsec in different ways :


Packaging for FreeBSD and RedHat/CentOS are WIP at the time of writing. Documentation will be updated once those packages are published & functional.

Required resources

Crowdsec agent itself is rather light, and in a small to medium setup should use less than 100Mb of memory. During intensive logs processing, CPU is going to be the most used resource, and memory usage shouldn't really grow.

However, running metabase (the dashboard deployed by cscli dashboard setup) requires 1-2Gb of RAM.

Install using crowdsec repository

Crowdsec distributes their own pragmatic debian packages that closely follow the development stream (packages are automatically published on release), and are suitable for those that want to keep up with the latest changes of crowdsec.

setup the repository

wget -qO - |sudo apt-key add - && echo "deb$(lsb_release -cs) $(lsb_release -cs) main" | sudo tee /etc/apt/sources.list.d/crowdsec.list > /dev/null
sudo apt-get update

The following debian suites / architectures are available :

Suite Architecture
bionic amd64, arm64, i386
bullseye amd64, i386
buster amd64, arm64, i386
focal amd64, arm64, i386
sid amd64, i386
stretch amd64, arm64, i386
xenial amd64, arm64, i386

install crowdsec

sudo apt-get install crowdsec

Manually install the debian package

Fetch your package from the public repository, and install it manually :

sudo dpkg -i ./crowdsec_1.0.7-4_amd64.deb

Install using debian official packages

Crowdsec is available for bullseye & sid and can be installed simply :

sudo apt-get install crowdsec

Install from the release tarball

Fetch crowdsec-agent's latest version here.

tar xvzf crowdsec-release.tgz
cd crowdsec-v1.X.X

A wizard is provided to help you deploy crowdsec-agent and cscli.

Using the interactive wizard

sudo ./ -i


The wizard is going to guide you through the following steps :

  • detect services that are present on your machine
  • detect selected services logs
  • suggest collections (parsers and scenarios) to deploy
  • deploy & configure crowdsec-agent in order to watch selected logs for selected scenarios

The process should take less than a minute, please report if there are any issues.

You are then ready to take a tour of your freshly deployed crowdsec-agent !


Keep in mind the crowdsec-agent is only in charge of the "detection", and won't block anything on its own. You need to deploy a bouncers to "apply" decisions.

Binary installation

you of little faith

sudo ./ --bininstall

This will only deploy the binaries, and some extra installation steps need to be completed for the software to be functional :

  • sudo cscli hub update : update the hub index
  • sudo cscli machines add -a : register crowdsec to the local API
  • sudo cscli capi register : register to the central API
  • sudo cscli collections install crowdsecurity/linux : install essential configs (syslog parser, geoip enrichment, date parsers)
  • configure your sources in your acquisition : /etc/crowdsec/acquis.yaml

You can now start & enable the crowdsec service :

  • sudo systemctl start crowdsec
  • sudo systemctl enable crowdsec

Using the unattended wizard

If your setup is standard and you've walked through the default installation without issues, you can win some time in case you need to perform a new install : sudo ./ --unattended

This mode will emulate the interactive mode of the wizard where you answer yes to everything and stick with the default options.

Install from source


  • Go v1.13+
  • git clone
  • jq

Go in crowdsec-agent folder and build the binaries :

cd crowdsec
make release

This will create you a directory (crowdsec-vXXX/) and an archive (crowdsec-release.tgz) that are release built from your local code source.

Now, you can install either with interactive wizard or the unattended mode.

Build docker image

Crowdsec provides a docker image and can simply built like this :

git clone && cd crowdsec
docker build -t crowdsec .