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List of contents of this article:

• 1,DigiPlus How to back up, restore and migrate Docker in LinuxContainer
• 2, docker container storage disk space migration under linux
• 3, migrate the entire Linux system to another hard disk
• 4, How to migrate the linux of the physical machine to vmware

How to backup, restore and migrate Docker containers in Linux

1,Backup containers. First of all, in order to back up the containers in Docker, we want to see the list of containers we want to back up. To achieve this goal, we need to run the docker ps command on the Linux machine where we are running the Docker engine and have created the container.

2, backup the boot partition of the Linux system ("/boot).

3. Docker will be installed under the /var/lib/docker/ directory by default under centOS. The capacity of this directory is not large, and it cannot be used if there are too many containers or mirrors created. The directory migration record is as follows (change to /home/docker): Stop the docker service.

docker container storage disk space migration under linux

2. When you use docker pull to pull down the image from the repository, or when you create a container from an image that does not yet exist locally, each layer will be pulled down separately and stored in the local storage area of Docker, which is usually /var/lib/ Docker/on the Linux host.

3. The operation steps are as follows: To install Docker, install the necessary dependencies on the Linux server. You can use the dockerimages command to obtain all the mirror images in the local repository, and select the appropriate one to download or update according to your needs.

Migrate the entire Linux system to anotherA hard disk

1, restart the computer, enter the BIOS/boot window, set the mobile hard disk as the first boot device, and save the settings to exit the window. Restart the computer and test to start Linux from the mobile hard disk; after x0dx0a is successful, it is natural to restore the original hard disk connection of the host.

2. First, install the hard disk and partition it, and format it. It's better not to mount a new partition. The same goes for other subdivisions. In addition, the dd command will also copy uuid. After the migration is completed, the system in the new partition cannot be started yet.

3. My system is only installed in one partition, so I migrate directly in root mode: the migration is completed in about an hour.

4. The following will introduce how to transfer the system from the old hard disk to the new hard disk.Step 1: Backup data. Before replacing the hard disk, you need to back up the data on the old hard disk. Backup can be achieved by copying files to another hard disk or using backup software.

5. Specific steps: 1. Download ddcopy, make a win98 boot floppy disk and copy ddcopy to the floppy disk. You can also use a USB flash drive. 2. Connect the first hard disk, that is, the source disk with the Linux system installed, to the main data line connected to the main version, and the second hard disk, that is the target disk, is connected to the secondary data line connected to the main version.

How to migrate the linux of the physical machine to vmware

1. Click the virtual machine and select to install VMware tools.Click to download directly. After the download is completed, just click to install. Just drag the files in the local machine directly into VMware. Select the virtual machine and click Settings. Enter the options page. Select the shared folder.

2. Click the virtual machine of your system, right-click setting, and then click option. There is a shared folder in it. The default is disabled. You can set a folder of your system to always enable, and this directory can be interoperable with linux in the future.

3. vmotion migration (hot migration): the open virtual machine is moved from one host or storage location to another host or storage location without interruption, also known as 'real-time migration'.Migration includes: any amount of system and application data running in memory, hardware device information.