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Go cartridge for OpenShift Origin
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OpenShift Go Cartridge

Runs Go on OpenShift using downloadable cartridge support. To install to OpenShift from the CLI (you'll need version 1.9 or later of rhc), run:

rhc create-app mygo

Once the app is created, you'll need to create and add a ".godir" file in your repo to tell the cartridge what the package of your Go code is. A typical .godir file might contain:

which would tell OpenShift to place all of the files in the root of the Git repository inside of the package prior to compilation.

When you push code to the repo, the cart will compile your package into $OPENSHIFT_REPO_DIR/bin/, with the last segment of the .godir being the name of the executable. For the above .godir, your executable will be:


If you want to serve web requests (vs. running in the background), you'll need to listen on the ip address and port that OpenShift allocates - those are available as OPENSHIFT_GO_IP and OPENSHIFT_GO_PORT in the environment.

The repository contains a sample go file which will print "hello, world" when someone hits your web application - see web.go.

Any log output will be generated to $OPENSHIFT_GO_LOG_DIR.

To provide your own custom GOPATH directory, add a ".gopath" file to the root of your Git repo with the desired GOPATH location, relative to the $OPENSHIFT_HOMEDIR directory. Example of a .gopath file content: app-root/data/mygopath. The specified location will be additive to the existing GOPATH provided by the cartridge as the first path declared in GOPATH (notice the GOPATH spec defines that "Go searches each directory listed in GOPATH to find source code, but new packages are always downloaded into the first directory in the list").

How it Works

When you push code to your repo, a Git postreceive hook runs and invokes the bin/compile script. This attempts to download a Go environment for you into $OPENSHIFT_GO_DIR/cache. Once the environment is setup, the cart runs

go get -tags openshift ./...

on a working copy of your source. The main file that you run will have access to two environment variables, $OPENSHIFT_GO_IP and $OPENSHIFT_GO_PORT, which contain the internal address you must listen on to receive HTTP requests to your application.


The bin/compile script is based on the Heroku Go buildpack, adapted for OpenShift cartridges.

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