I'm trying to mount a data volume to a docker container using the Rex-Ray plugin. I've chosen VirtualBox Media as the storage provider.
The versions I'm using are:
- Docker 1.12.5
- Rex-Ray 0.6.3 with libStorage 0.3.5
- VirtualBox base package 5.1.12
The setup:
- One CentOS 7 VM running in VirtualBox
- Docker 1.12.5 running in the CentOS 7 VM
- Rex-Ray installed and running in the CentOS 7 VM
- Mac OS X 10.12.1 host machine
On the Mac OS host machine:
1 . I turn off VirtualBox SOAP API authentication with VBoxManage setproperty websrvauthlibrary null
2 . I start the VirtualBox SOAP API with
vboxwebsrv -H 0.0.0.0 -v to allow Rex-Ray to communicate with VirtualBox
In the CentOS 7 VM I'm doing the following (as root):
1 . Start Docker with systemctl start docker
2 . Create the Rex-Ray /etc/rexray/config.yml file:
libstorage:
service: virtualbox
integration:
volume:
operations:
mount:
preempt: true
virtualbox:
endpoint: http://192.168.99.1:18083
volumePath: /Users/<username>/Volumes
controllerName: SATA
where the endpoint is the IP on which the VirtualBox SOAP API runs on the Mac OS X host machine and volumePath is an existing folder on the Mac OS X host in which volumes will be stored after creation
This config file follows the same format found in the Dell EMC tutorial on https://github.com/codedellemc/labs/tree/master/setup-virtualbox-dockermachine
3 . Start Rex-Ray service using rexray start
4 . Create a 1GB volume with
docker volume create -d rexray --name pg_data --opt=size=1
5 . Attempt to run a Postgres docker container using the official postgres image. The rexray volume created previously is mounted to the /var/lib/postgresql/data directory in the Postgres container:
docker run -dit --name pg -e POSTGRES_PASSWORD=mysecretpassword --volume-driver=rexray -v pg_data:/var/lib/postgresql/data postgres
The container fails to start and I receive the following error
Error response from daemon: VolumeDriver.Mount: {"Error":"VirtualBox error: Invalid managed object reference """}
My VirtualBox storage settings are shown in the following image:
Any help much appreciated
