docker-machine with rsync

Question

I want to use rsync within order to synchronize a folder. docker-machine allows rsync with the -d option.

docker-machine scp -r -d . machine-name:~

This command seems to be working, however, I would like to extend the use of rsync to:

rsync -rvz --delete --exclude-from=.rsyncignore -e 'docker-machine ssh machine-name' . :

I also tried the following command:

sshpass -p "tcuser" rsync -rvz --delete --exclude-from=.rsyncignore  . docker@`docker-machine ip machine-name`:

Both command synchronize everything a first time, however, once everything is synced, I cannot access the VM anymore. If I try to access the VM through docker-machine ssh machine-name i receive the responseexit status 255. What is happening?

Answer 1

You can find more about here

1.-The Dockerfile

 FROM centos:6
    # install rsync
    RUN yum update -y
    RUN yum -y install rsync xinetd
    # configure rsync
    ADD ./rsyncd.conf /root/
    RUN sed -i 's/disable[[:space:]]*=[[:space:]]*yes/disable = no/g' /etc/xinetd.d/rsync # enable rsync
    RUN cp /root/rsyncd.conf /etc/rsyncd.conf
    RUN /etc/rc.d/init.d/xinetd start
    RUN chkconfig xinetd on
    # create the dir that will be synced
    RUN mkdir /home/share
    # just to keep the container running
    CMD /etc/rc.d/init.d/xinetd start && tail -f /dev/null

2.-Build the container within the repository directory.

docker build . -t docker-rsync

3.-For start the container and map the rsync server port to a specific host port, like to

docker run -p 10873:873 docker-rsync

4.-Now we need to sync our share directory and sync any changes again as soon as anything changes. Rsync will only sync changes after an initial sync.

# initial sync
rsync -avP ./share --delete rsync://localhost:10873/example/
# sync on change
fswatch -0 ./share | xargs -0 -n 1 -I {} rsync -avP ./share --delete rsync://localhost:10873/example/

UPGRADE: because docker machines change content and virtual disk need upgrade

first command when changed files in docker containers :

rsync --ignore-existing --sparse ...

second when docker machine create new files in containers sparse mode ,followed by:

 rsync --inplace ...