docker-xrootd-proxy-server

Building the docker image

All necessary files are contained in the BUILD directory. This contains a Dockerfile, starting scripts for XRootD services and VOMS proxy creation.

You can build the docker image using the building script and will get an image called test-image:latest.

./BUILD/build.sh

Converting the image

The procedure of converting the docker image to a singularity image depends on the version of singularity you will use.

The conversion script automatically chooses the method according to the installed singularity version.

./CONVERT/convert.sh

You will get a suitable singularity image called xrootd-caching-proxy.<sif/simg>.

Singularity version >= 3.0

Here you can directly convert the image by using the build command.

Singularity version < 3.0

Since the build command of singularity creates a non-functional image, you need to upload the image to a dockerhub repo before building a singularity image while downloading it.

Running the container

Starting scripts for docker and singularity can be found in the RUN directory. These automatically mount the CACHE and HOME_DIR into/opt/cache and /opt/xrootd. Furthermore, they start an xrootd and an cmsd service for every XRootD config file (ending on *.cf) placed in HOME_DIR/configs/. Additionally, an GSI VOMS proxy certificate is created using the ùserkey.pem and usercert.pem (or usercred.p12) placed in HOME_DIR/.globus/ and renews is every 24 hours.

For docker

./RUN/docker-run.sh

For singularity

./RUN/singularity-run.sh