Advanced Topics
- About This Guide
- 1 SUSE Manager on IBM z Systems
- 2 Uyuni 3.2 Proxy
- 3 Security
- 4 Uyuni in the Public Cloud: Uyuni Server and Uyuni Proxy in the Public Cloud
- 5 Optimization and Scalability
- 6 Salt SSH Integration
- 7 Monitoring with Icinga
- 8 Image Building and Management
- 9 Kubernetes Integration Guide
- 10 Cobbler
- 11 Virtualization
- 12 Inventorying vCenter/vSphere ESXi Hosts with Uyuni
- 13 SUSE Manager Command Line Tools
- 14 spacecmd Reference
- A Ports
- B Minimalist AutoYaST Profile for Automated Installations and Useful Enhancements
- C GNU Licenses
- 15 GNU Free Documentation License
1 SUSE Manager on IBM z Systems
1.1 Introduction #
This best practice guide is intended for z/VM administrators responsible for operating the IBM z Systems Mainframe. The goal of this guide is to lead an z/VM administrator trained on normal z Systems operating protocols through the installation of Uyuni onto an existing mainframe system. The intent of this article is not to cover the variety of hardware configuration profiles available on z Systems but instead to provide a foundational overview of the procedure and requirements necessary for a successful Uyuni server deployment.
1.2 Base System Requirements #
The z/VM administrator should acquire and prepare the following resources for a successful Uyuni installation. Uyuni3.2 is delivered as an extension. These sections will provide you with the minimum and recommended system requirements for Uyuni . The base system for Uyuni 3.2 is SLES 12SP3 .
| Hardware | Recommended Hardware |
|---|---|
IBM Systems | * IBM zEnterprise System z196 (z196) * IBM zEnterprise System z114 (z114) * IBM zEnterprise EC12 (zEC12) * IBM zEnterprise EC12 (zEC12) * IBM zEnterprise BC12 (zBC12) * IBM z13 (z13) * LinuxOne Rockhopper * LinuxOne Emperor |
RAM | Split memory requirements across available RAM, VDISK and swap to suit your environment. On a production system the ratio of physical memory to VDISK will need to be re-evaluated based on the number of clients which will be supported. Minimum 5 GB+ for test server (3 GB RAM + 2 GB VDISK Swap) Minimum 16 GB+ for base installation Minimum 32 GB+ for a production server |
Free Disk Space | Minimum 100 GB for root partition Minimum 50
GB for Minimum 50
GB per SUSE
product + 100 GB per Red Hat product |
Network Connection | * OSA Express Ethernet (including Fast and Gigabit Ethernet) _ * HiperSockets or Guest LAN * 10 GBE, VSWITCH * RoCE _(RDMA over Converged Ethernet) The following interfaces are still included but no longer supported: * CTC (or virtual CTC) * IP network interface for IUCV |
Media Requirements #
SUSE Linux Enterprise 12SP3 Installation Media for IBM z Systems :
1.3 Additional Requirements #
There are a few additional resource requirements you will need to prepare before installing the Uyuni extension on your system. This section overviews these requirements.
The guest z/VM should be provided with a static IP address and hostname as these cannot be easily changed after initial setup. The hostname should contain less than 8 characters.
For more information on Uyuni additional requirements, see https://www.suse.com/documentation/suse-manager-3/book_suma_best_practices/data/mgr_conceptual_overview.html.
You will need to ensure you have sufficient disk storage for Uyuni
before running yast2 susemanagersetup.
This section explains these requirements in more detail.
Warning: UyuniDefault Volume Groups and Disk Space
By default the file system of Uyuni, including the embedded database and patch directories, reside within the root volume. While adjustments are possible once installation is complete, it is the administrator’s responsibility to specify and monitor these adjustments.
If your Uyuni runs out of disk space, this can have a severe impact on its database and file structure. Preparing storage requirements in accordance with this section will aid in preventing these harmful effects. SUSE technical services will not be able to provide support for systems suffering from low disk space conditions as this can have an effect on an entire system and therefore becomes unresolvable. A full recovery is only possible with a previous backup or a new Uyuni installation.
Required Storage Devices. An additional disk is required for database storage.
This should be an zFCP or DASD device as these are preferred for use with HYPERPAV.
The disk should fulfill the following requirements:
At least 50 GB for
/var/lib/pgsqlAt least 50 GB for each SUSE product in
/var/spacewalkAt least 100 GB for each Red Hat product in
/var/spacewalk
Reclaiming Disk Space. If you need to reclaim more disk space, try these suggestions:
Remove custom channels (you cannot remove official SUSE channels)
Use the
spacewalk-data-fsck --helpcommand to compare the spacewalk database to the filesystem and remove entries if either is missing.
1.4 SLES 12SP3 Installation and the Uyuni Extension #
This section covers the installation of Uyuni3.2 as an extension to SLES 12SP3 .
For more information on deploying SLES 12SP3 on your hardware, see https://www.suse.com/documentation/sles-12/book_sle_deployment/data/cha_zseries.html.
During installation of SLES 12SP3 select Uyuni as an extension.
After rebooting you will need to set up the additional storage required for /var/spacewalk and /var/lib/pgsql and swap space using the yast partitioner tool.
This step is required before running yast2 susemanagersetup.
After configuring the storage requirements, having executed a YaST online update and completed a full system reboot, run Uyuni setup to finalize the Uyuni installation on your z Systems mainframe:
{prompt.root}yast2 susemanagersetupThis completes the installation of Uyuni on your z Systems . For more information on beginning management with Uyuni , see Setup Uyuni with YaST.