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Nckl

Nckl (read as "nickel") is a lightweight Selenium load balancer used to transparently distribute browser requests from parallel processes over a limited set of browsers.

Building

We use godep for dependencies management so ensure it's installed before proceeding with next steps. To build the code:

  1. Checkout this source tree: $ git clone https://github.com/seleniumkit/nckl.git
  2. Download dependencies: $ godep restore
  3. Build as usually: $ go build
  4. Run compiled binary: $GOPATH/bin/nckl

Running

Type $ nckl --help to see all available flags. Usually Nckl is run like the following:

$ nckl -users /etc/grid-router/users.htpasswd -quotaDir /etc/grid-router/quota -destination example.com:4444

In this command -usersFile contains path to plain-test users file and -quotaDirectory contains path to directory with XML quota files. See example test.xml file in test-data directory.

Docker containers

To build Docker container make sure you have the following installed:

  1. Docker distribution
  2. Go distribution
  3. godep

To build container type:

$ godep restore
$ ./build-container.sh

This will build an image nckl:latest that exposes running Nckl to port 8080. To run container type:

$ docker run -d --name nckl -e DESTINATION='example.com:4444' -v /etc/grid-router/:/etc/grid-router:ro --net host nckl:latest