# Oracle Linux

## How to create VM image?

You should download [Oracle Linux image](https://yum.oracle.com/oracle-linux-templates.html) to OSS/S3 directly, don't try to build image from ISO manual setup by KVM/VMVare/VirtualBox

## Cloud image requirements

- Kernel:
  - Unbreakable Enterprise Kernel (UEK)(√)
  - Red Hat Compatible Kernel(RHCK)
- OS disk automaticlly resize
- User can user password or key both for create VM or reset password
- OS start methond on Cloud: UEFI-Preferred
- Logic Disk partition: LVM
- File system type: xfs(√)、[btrfs](https://blogs.oracle.com/linux/post/btrfs-on-oracle-linuxefficiently-backup-and-recover-systems) 
- Softwares: cloud-init, agent of Cloud provider, virtio, NVMe
- Other config: https://github.com/Websoft9/mcloud/blob/master/ansible/roles/desktop/tasks/image.yml
- Applicaitons: Desktop or Docker/Podman
- Other repository
  ```
  yum install -y oraclelinux-developer-release-e* oracle-nodejs-release-e* oracle-epel-release-e*; fi
  python3 and pip at OracleLinux7?
  ```

## Upgrade Oracle Linux

You can use [leapp](https://docs.oracle.com/en/learn/ol-linux-leapp) to upgrade major version, e.g Oracle Linux8 > Oracle Linux9

## Test your Cloud private image

Some Cloud provider have tools for your image testing:  

- [阿里云 sersi](https://help.aliyun.com/zh/ecs/user-guide/check-whether-an-image-meets-the-import-requirements)