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2.17. Converting Containers with almaconvert8¶

Virtuozzo Hybrid Server introduces the option of converting the CentOS 7, CentOS 8, VzLinux 7, and VzLinux 8 operating systems running on a container to AlmaLinux 8.

To use this option, download and install the vzdeploy8 package:

yum install  https://repo.virtuozzo.com/vzlinux/vzdeploy/vzdeploy8.rpm

Use the almaconvert8 list command to list all the containers available for converting. For example:

# almaconvert8 list

...

MyCT-centos8
MyCT-centos7
MyCT-vzlinux7
MyCT-4-vzlinux8

Execute the almaconvert8 list-cpanel command to list containers with cPanel installed inside, available for converting to AlmaLinux 8.

Run the almaconvert8 convert command to convert a container from one operating system to AlmaLinux 8. For example, to convert the MyCT container to AlmaLinux 8, use the following:

# almaconvert8 convert MyCT

If you need to convert several containers simultaneously, run the following:

# almaconvert8 convert --parallel 7

7 is the number of containers that undergo the conversion concurrently.

Find below the list of options you can use when running the almaconvert8 convert command.

almaconvert8 convert [-h] [--dry-run] [-q] [-v] [--log LOG]
                     [--parallel [parallel]] [--elevate] [--strict]
                     CT [CT1 CT2 ... CTn]

Name	Description
`CT`	The UUID, CTID, or name of the container to convert. If there are several containers to convert, delimit them by spaces.
`-h, --help`	Provide the list of flags used with `almaconvert8 convert`.
`--dry-run`	Check that the conversion is possible.
`-q, --quiet`	Suppress the output.
`-v, --verbose`	Provide detailed processing information.
`--log LOG`	Dump all the information and messages to the specified log file.
`--parallel [parallel]`	The number of simultaneous conversions to execute.
`--elevate`	Call the elevate upgrade scripts and wait for them to complete. To use this option for `vzdeploy8-1.0.63-1` or later, ensure you are running at least Virtuozzo Hybrid Server 7.5 Update 6 or later versions.
`--elevate_continue`	Call the elevate script with the `--continue` parameter. It does not have an effect without the `--elevate` key.
`--strict`	Block the conversion when a precheck message appears.

Note

The --elevate option is an experimental feature for third-party scripts and is optional. Use it only when you have a complete understanding of the way this option is used. If you need to check the version of the tool, run the following command:

# almaconvert8 version

Version 7.5 — Apr 02, 2025

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