Installing Kapow!

Kapow! has a reference implementation in Go that is under active development right now. If you want to start using Kapow! you can choose from several options.

Download and Install a Binary

Binaries for several platforms are available from the releases section, visit the latest release page and download the binary corresponding to the platfom and architecture you want to install Kapow! in.


Install the downloaded binary using the following command as a privileged user.

# install kapow_0.7.1_linux_amd64 /usr/local/bin/kapow


Install the downloaded binary using the following command as a privileged user.

# install kapow_0.7.1_darwin_amd64 /usr/local/bin/kapow


Native windows installers are provided for both 32 and 64 bit versions.

Alternatively, you can download the provided zipfile, expand it, and move kapow.exe to a directory of your choice; then update the system PATH variable to include that directory. Note that the zipfile also includes the LICENSE.

Install the package with go get

If you already have installed and configured the go runtime in the host where you want to run Kapow!, simply run:

$ go get -v

Note that Kapow! leverages Go modules, so you can target specific releases:

$ GO111MODULE=on go get -v
go: finding v0.7.1
go: finding v0.7.1
go: finding v0.7.1
go: downloading v0.7.1
go: extracting v0.7.1

Include Kapow! in your Container Image

If you want to include Kapow! in a Docker image, you can add the binary directly from the releases section. Below is an example Dockerfile that includes Kapow!.

FROM debian:stable-slim

ADD /usr/bin/kapow

RUN chmod 755 /usr/bin/kapow

ENTRYPOINT ["/usr/bin/kapow"]

If the container is intended for running the server and you want to dinamically configure it, remember to include a --control-bind param with an external bind address (e.g., and to map all the needed ports in order to get access to the control interface.

After building the image you can run the container with:

$ docker run --rm -i -p 8080:8080 -v $(pwd)/whatever-route:/opt/whatever-route kapow:latest server /opt/whatever-route

With the -v parameter we map a local file into the container’s filesystem so we can use it to configure our Kapow! server on startup.