Simple rsync server running in a docker container

Launch the container via docker:

docker run -d -p <port>:873 --name rsyncd thomfab/docker-rsyncd

You can connect to the rsync server you just created with:

rsync rsync://<docker>:<port>/
volume          volume

To sync:

rsync -avP /path/to/dir rsync://<docker>:<port>/volume/

Some variables can be customized :

To set the name of the sync volume. Default is "volume"

Example :

docker run -d -p <port>:873 --name rsyncd \
              -e VOLUME="backup" \
              thomfab/docker-rsyncd

which will give :

rsync rsync://<docker>:<port>/
backup          backup

By default, rsync server accepts a connection only from 192.168.0.0/16 and 172.12.0.0/12 for security reasons. You can override via an environment variable like this:

docker run -d -p <port>:873 \
              --name rsyncd \
              -e ALLOW='10.0.0.0/8 x.x.x.x/y' \
              thomfab/docker-rsyncd

By default the user "nobody" is used. You can customize and pass the id of a user the docker host (so that file perms are correct). Example, if your docker host has a user "ubuntu" with id 1000 you can use :

docker run -d -p <port>:873 \
           --name rsyncd \
           -e OWNER=1000 \
           thomfab/rsyncd

Files created in the volume by rsyncd will belong to the user ubuntu (see volumes below).

By default the group "nogroup" is used. You can also customize and pass the id of a group on the docker host. Example, if your docker host has a group "users" with id 100 you can use :

docker run -d -p <port>:873 \
           --name rsyncd \
           -e GROUP=100 \
           thomfab/rsyncd

Files created in the volume by rsyncd will belong to the group users.

The sync folder exposed by rsyncd is a docker volume. You can map it to a local folder on the docker host :

docker run -d -p <port>:873 \
              --name rsyncd \
              -v /path/to/host/folder:/volume \
              thomfab/docker-rsyncd

docker run -d -p 873:873 \
              --name rsyncd \
              -e VOLUME="backup" \
              -e OWNER=1000 \
              -e GROUP=100 \
              -v /srv/backup:/volume \
              thomfab/docker-rsyncd

This will start an rsync daemon, exposed on the standard port, with a volume named "backup", and map it to the host folder /srv/backup. Files created during sync will belong to user "ubuntu" and group "users" on a standard Ubuntu install.