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CVMFS HandsOn

Workaround for known bug Docker-XFS:

sudo mkdir /opt/cvmfs/spool/

sudo truncate -s 500M /opt/cvmfs/spool/test

sudo mkfs.ext4 /opt/cvmfs/spool/test

sudo mkdir -p /opt/docker/

sudo mount /opt/cvmfs/spool/test /opt/docker/

Docker compose for deploying a stratum0 + client:

version: "2"
services:
  cvmfs-client:
    image: cloudpg/cvmfs-client
    container_name: cvmfs-client
    hostname: cvmfs-client
    privileged: true
    depends_on:
      - cvmfs-stratum0
    volumes:
      - /sys/fs/cgroup:/sys/fs/cgroup
    environment:
      - "SERVER_NAME=cvmfs-stratum0"
      - "REPO_NAME=myrepo.dodas"
    tty: true

  cvmfs-stratum0:
    image: cloudpg/cvmfs-stratum0-base
    container_name: cvmfs-stratum0
    hostname: cvmfs-stratum0
    privileged: true
    volumes:
      - /opt/docker/:/var/spool/cvmfs
      - /var/cvmfs-docker/stratum0/cvmfs:/cvmfs
      - /var/cvmfs-docker/stratum0/srv/cvmfs:/srv/cvmfs
      - /var/cvmfs-docker/stratum0/etc/cvmfs:/etc/cvmfs
      - /sys/fs/cgroup:/sys/fs/cgroup

Bring up the containers:

docker-compose up

Create a cvmfs repository:

docker exec -ti cvmfs-stratum0 bash

cvmfs_server mkfs myrepo.dodas

exit

Copy the key of the repository into the client:

docker cp /var/cvmfs-docker/stratum0/etc/cvmfs/keys/myrepo.dodas.pub cvmfs-client:/etc/cvmfs/keys

docker exec -ti cvmfs-client bash

chmod +x /etc/cvmfs-init-scripts/client-init.sh

/etc/cvmfs-init-scripts/client-init.sh myrepo.dodas cvmfs-stratum0

ls /cvmfs/myrepo.dodas

cat /cvmfs/myrepo.dodas/new_repository

exit

Log into the Stratum0 and then let's see how to create and publish a file:

cvmfs_server transaction myrepo.dodas

echo "testme" >> /cvmfs/myrepo.dodas/test.txt

cvmfs_server publish myrepo.dodas

exit

Into the client again:

# no need to force restart, but not to waste time waiting for periodic update....
/etc/cvmfs-init-scripts/client-init.sh myrepo.dodas cvmfs-stratum0

ls /cvmfs/myrepo.dodas/test.txt

cat /cvmfs/myrepo.dodas/test.txt

Acknowledgements

https://github.com/gabrielefronze/cvmfs-server-container