如何将卷数据从 docker-for-mac 迁移到 colima

Question

如何将卷从 docker-for-mac 移动到 colima？

Answer 1

将从docker-for-mac 复制所有卷并将它们移动到colima。

注意：您可能不想复制很多卷，因为它们是临时卷，您可以通过在 for 循环之前或之前添加 | grep "YOUR FILTER" 来忽略它们在awk之后。

以下代码做了两个假设：

1. 您已安装并运行 docker-for-mac
2. 您正在运行科利马

这就是您所需要的，现在将其复制并粘贴到您的终端中。无需触摸任何东西。

(
# 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
)