Install Using Yomi
Yomi (yet one more installer) is an installer for SUSE and openSUSE operating systems. Yomi is designed as a Salt state, and can be used for installing SUSE operating systems on new systems.
In Uyuni, Yomi can be used as part of provisioning new clients, as an alternative to AutoYaST.
Yomi consists of two components:
The Yomi formula, which contains the Salt states and modules required to perform the installation.
The operating system image, which includes the pre-configured
Both components can be used independently of Uyuni, or integrated with it. This section describes how to use it with Uyuni.
For more information about using Yomi independently, see https://github.com/openSUSE/yomi.
For build assets, see https://build.opensuse.org/project/show/systemsmanagement:yomi.
To use Yomi for installing a client operating system, follow this process:
Prepare the Salt pillar for the new installation.
Boot the new client using the PXE boot image for Yomi.
To use Yomi with Uyuni, ensure you have enough available memory. To boot from USB or DVD image, you need at least 512 MB. To boot from a PXE server, you need at least 2 GB.
Before you begin, you need to install the Yomi formula, which is available as a package in Uyuni.
yomi-formula package contains the Salt states and modules that describe the Yomi state, and the formulas with forms to create the pillar.
It also contains documentation about the different sections of the pillar, and some examples about how to parameterize installations based on openSUSE, MicroOS, or SLE.
The formula package performs these actions:
Adds a new configuration file called
/etc/salt/master.d/directory. This configuration file defines the Python module and Salt states required by Yomi.
Installs the Yomi Salt states in the
Provides some example configuration files in the
Installs the required forms and sub-forms in the
Provides some pillar examples in the
On the Uyuni Server, at the command prompt, as root, install the
zypper in yomi-formula
systemctl restart salt-master.service
For more information about the Yomi formula, see specialized-guides:salt/salt-formula-yomi.adoc.
To provision a new client, you need an operating system image to boot from.
You can use any image that contains a
salt-minion service enabled, together with a minimal set of tools that are required during the installation, for example
Yomi provides an already prepared image, based on openSUSE Tumbleweed, openSUSE Leap (for Uyuni), or SLE (for SUSE Manager).
For Uyuni, the image is packaged as an RPM.
This is done in a similar way to how
pxe-default-image is distributed.
The package installs a standard PXE OEM image generated by Kiwi, the initial kernel and initrd in the
/srv/pxe-yomi-image/ directory, and the second stage kernel, initrd and image in the
On the Uyuni Server, at the command prompt, as root, install the
zypper in pxe-yomi-image-opensuse15
When you have the package installed, you can register Yomi in Cobbler.
Uyuni uses Cobbler to manage the PXE boot service, so you will need to register the image in Cobbler.
On the Uyuni Server, at the command prompt, as root, create a directory for the Yomi image:
Define a distribution in Cobbler, including the path to install the second stage kernel and initrd, the location of the full image, and any further kernel options. Adjust this command to include the correct version of the product, and the TFTP server address:
cobbler distro add \ --name=pxe-yomi-image \ --kernel=/srv/pxe-yomi-image/linux \ --initrd=/srv/pxe-yomi-image/initrd \ --boot-files='/srv/tftpboot/pxe-yomi-image/image.initrd=/srv/pxe-yomi-image/image/pxe-yomi-image-opensuse15.x86_64-1.0.0.initrd /srv/tftpboot/pxe-yomi-image/image.kernel=/srv/pxe-yomi-image/image/pxe-yomi-image-opensuse15.x86_64-1.0.0.kernel /srv/tftpboot/pxe-yomi-image/image.md5=/srv/pxe-yomi-image/image/pxe-yomi-image-opensuse15.x86_64-1.0.0.md5 /srv/tftpboot/pxe-yomi-image/image.config.bootoptions=/srv/pxe-yomi-image/image/pxe-yomi-image-opensuse15-x86_64-1.0.0.config.bootoptions /srv/tftpboot/pxe-yomi-image/image.xz=/srv/pxe-yomi-image/image/pxe-yomi-image-opensuse15.x86_64-1.0.0.xz' \ --kernel-options='rd.kiwi.install.pxe rd.kiwi.install.image=tftp://<server-address>/pxe-yomi-image/image.xz rd.kiwi.ramdisk ramdisk_size=2097152 net.ifnames=1'
By default, the
salt-minion service in
pxe-yomi-image is configured to find the Salt master under the
If the DNS server is not able to resolve this address, you need to adjust the
kernel-options parameter from the Cobbler command that register the distribution, and add a new kernel command line of
This will override the default configuration for the
On the Uyuni Server, at the command prompt, as root, define a profile in Cobbler based on the image.
cobbler profile add \ --name pxe-yomi-profile \ --distro=pxe-yomi-image
OPTIONAL: Create a system in Cobbler. If you know the MAC address for the new client to be provisioned, you can have it boot directly from the Yomi image.
cobbler system add \ --name=yomi \ --mac=00:11:22:33:44:55 \ --profile=pxe-yomi-profile
When the new node has been provisioned, remove the temporary Cobbler system:
cobbler system remove --name=yomi
The parameters of the new installation are defined with a Salt pillar. The pillar includes parameters that the Yomi state requires during the installation, including the partitions, file systems, repositories, packages installed, and services enabled.
The pillar is defined using the formulas with forms.
In this example, we prepare the pillar for a minimal openSUSE Tumbleweed installation.
You can find examples for MicroOS or SLES in the example directory
To begin, boot the client that you want to provision using the Yomi PXE boot image, using the Cobbler procedures described earlier in this section.
salt-minion service is running on the new client, accept the key by navigating to .
When the key is accepted, you can view and manage the client by navigating to .
Navigate to the
Formulas tab, and add all the Yomi Installer formulas to the client.
When you have added all the formulas, complete the forms and sub-forms.
This section outlines each form and provides example settings for a minimal installation.
For a detailed explanation of every option, see specialized-guides:salt/salt-formula-yomi.adoc.
The Yomi form contains some general configuration options. For example, the keyboard language and layout, the locale information, and the option to perform a full reset of the system after provisioning.
For this example, set the
Reboot parameter to
- Yomi Storage
This sub-form provides information about the devices, partitioning, file system (including the BtrFS subvolumes, for example), and LVM and RAID configuration.
For this example, we assume that the new client has a single device named
/dev/sda, and that it belongs to a non-UEFI system.
In this case, we have only three partitions: one for the boot loader, one for swap and one for the system.
We also expect to have an ext4 file system for the root directory.
Initial Gap: 1 MB
Create three partitions:
Partition Number: 1
Partition Size: 1 MB
Partition Type: boot
Partition Number: 2
Partition Size: 1024 MB
Partition Type: swap
Partition Number: 3
Partition Size: rest
Partition Type: linux
Create two file systems:
- Yomi Bootloader
This sub-form provides details required for GRUB.
Set these parameters:
Kernel parameter can be used for the GRUB
- Yomi Software
This form provides the different repositories and packages to install. You can also register the product in this form, using SUSEConnect, and install the different modules after registering.
For this example we are going to install a very minimal openSUSE Tumbleweed distribution, using publicly available repositories. For production deployments, you will need to provide a local repository.
Add a new repository: * Repository Name: repo-oss * Repository URL: http://download.opensuse.org/tumbleweed/repo/oss/
Add these packages: * pattern:enhanced_base * glibc-locale * kernel-default
You can also add patterns and products, together with packages, by using the correct prefix.
- Yomi Services
By default Yomi is installed with the
salt-minionservice, but you must enable it.
Add a new enabled service:
- Yomi Users
This form sets out the system users. In this example, we have a single root user. To provide a password, you must use the hashed version of the password, not the plain text. This behavior is set to be changed in future versions of Yomi.
Password Hash: $1$wYJUgpM5$RXMMeASDc035eXNbYWFl0
You can monitor the installation as it progresses, using the
monitor tool from Yomi.
You can continue monitoring as the highstate is applied to the new client.
To use the tool, you will need to have enabled
Events in the Yomi formula, and have the
salt-api service activated.
For more information about the
salt-api service, and how to use the
monitor tool, see https://github.com/openSUSE/yomi.