红帽全球峰会16.2. Using DNF with image mode for RHEL
The rhel10/rhel-bootc container image includes the dnf package manager. You can use dnf for several use cases:
- Using
dnfas a part of a container build -
You can use the
RUN dnf installdirective in the Containerfile. - Using
dnfat runtime
警告
The functionality depends on the dnf version. You might get an error: error: can’t create transaction lock on /usr/share/rpm/.rpm.lock (Read-only file system).
You can use the bootc-usr-overlay command to create a writable overlay filesystem for /usr directory. The dnf install writes to this overlay. You can use this feature for installing debugging tools. Note that changes will be lost on reboot.
- Configuring storage
The supported storage technologies are the following:
-
xfs/ext4 - Logical volume management (LVM)
- Linux Unified Key Setup (LUKS)
-
You can add other storage packages to the host system.
-
Storage with
bootc-image-builderYou can use the bootc-image-builder tool to create a disk image. The available configuration for partitioning and layout is relatively fixed. The default filesystem type is derived from the container image’s bootc install configuration. -
Storage with bootc install You can use the
bootc install to-diskcommand for flat storage configurations andbootc install to-filesytemcommand for more advanced installations. For more information see Advanced installation withto-filesystem.
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