Get Started with Volumes¶
In this lab we learn how to create a basic docker volume and mount it in a container
Volume mounted in a container¶
Execute the following command
$ docker run -v /volume1 -i -t ubuntu /bin/bash
This will mount
/volume1
inside the container created fromubuntu
image and launch and bash shell.The command above will get us into the terminal tty of the container. Run
ls
command and you will notice volume 1 there$root@b979b5d735b0:/# ls bin boot dev etc home lib lib64.. var volume1
On inspecting the docker container you will notice that
/volume1
is mounted under/
and is a ReadWrite Volume{ "Volumes": { "/volume1": "/var/lib/docker/vfs/dir/012..5a569b392" }, "VolumesRW": { "/volume1": true } }
Mount a Host Directory as a Volume¶
Create a local directory
/host/logs
$ sudo mkdir -p /host/logs $ sudo touch /host/logs/log1.txt
Execute the following command to bind
/host/logs
host directory to/container/logs
volume$ docker run -v /host/logs:/container/logs -i -t ubuntu /bin/bash
Execute
ls
to see the contents of mounted volume. Notice that contents are the same as created in host directory.root@3774005dee32:/# ls bin boot container .. srv sys tmp usr var root@3774005dee32:/# ls container/logs/ log1.txt