How do I move volumes from docker-for-mac
into colima
?
Will copy all the volumes from docker-for-mac
and move them to colima
.
Note: there will be a lot of volumes you may not want to copy over since they're temporary ones, you can ignore them by simply adding a | grep "YOUR FILTER"
to the for
loop, either before or after the awk
.
The following code makes 2 assumptions:
That is all you need, now copy-and-paste this into your terminal. No need to touch anything.
(
# set -x # uncomment to debug
set -e
# ssh doesn't like file descriptor piping, we need to write the configuration into someplace real
tmpconfig=$(mktemp);
# Need to have permissions to copy the volumes, and need to remove the ControlPath and add ForwardAgent
(limactl show-ssh --format config colima | grep -v "^ ControlPath\| ^User"; echo " ForwardAgent=yes") > $tmpconfig;
# Setup root account
ssh -F $tmpconfig $USER@lima-colima "sudo mkdir -p /root/.ssh/; sudo cp ~/.ssh/authorized_keys /root/.ssh/authorized_keys"
# Loop over each volume inside docker-for-mac
for volume_name in $(DOCKER_CONTEXT=desktop-linux docker volume ls | awk '{print $2}'); do
echo $volume_name;
# Make the volume backup
DOCKER_CONTEXT=desktop-linux docker run -d --rm --mount source=$volume_name,target=/volume --name copy-instance busybox sleep infinate;
DOCKER_CONTEXT=desktop-linux docker exec copy-instance sh -c "tar czf /$volume_name.tar /volume";
DOCKER_CONTEXT=desktop-linux docker cp copy-instance:/$volume_name.tar /tmp/$volume_name.tar;
DOCKER_CONTEXT=desktop-linux docker kill copy-instance;
# Restore the backup inside colima
DOCKER_CONTEXT=colima docker volume create $volume_name;
ssh -F $tmpconfig root@lima-colima "rm -rf /var/lib/docker/volumes/$volume_name; mkdir -p /var/lib/docker/volumes/$volume_name/_data";
scp -r -F $tmpconfig /tmp/$volume_name.tar root@lima-colima:/tmp/$volume_name.tar;
ssh -F $tmpconfig root@lima-colima "tar -xf /tmp/$volume_name.tar --strip-components=1 --directory /var/lib/docker/volumes/$volume_name/_data";
done
)