Contents
Reference
- About this guide
- I Advanced administration
- II System
- 8 32-bit and 64-bit applications in a 64-bit system environment
- 9 Introduction to the boot process
- 10 The
systemddaemon - 11
journalctl: query thesystemdjournal - 12 The boot loader GRUB 2
- 13 Basic networking
- 14 UEFI (Unified Extensible Firmware Interface)
- 15 Special system features
- 16 Dynamic kernel device management with
udev
- III Services
- IV Mobile computers
- A An example network
- B GNU licenses
openSUSE Leap 15.7
Reference
Publication Date: October 22, 2025
- About this guide
- I Advanced administration
- 1 YaST in text mode
- 2 Managing software with command line tools
- 3 System recovery and snapshot management with Snapper
- 3.1 Default setup
- 3.2 Using Snapper to undo changes
- 3.3 System rollback by booting from snapshots
- 3.4 Enabling Snapper in user home directories
- 3.5 Creating and modifying Snapper configurations
- 3.6 Manually creating and managing snapshots
- 3.7 Automatic snapshot clean-up
- 3.8 Showing exclusive disk space used by snapshots
- 3.9 Frequently asked questions
- 4 Remote graphical sessions with VNC
- 5
- 6 Installing multiple kernel versions
- 7 Graphical user interface
- II System
- 8 32-bit and 64-bit applications in a 64-bit system environment
- 9 Introduction to the boot process
- 10 The
systemddaemon - 11
journalctl: query thesystemdjournal - 12 The boot loader GRUB 2
- 13 Basic networking
- 13.1 IP addresses and routing
- 13.2 IPv6—the next generation Internet
- 13.3 Name resolution
- 13.4 Configuring a network connection with YaST
- 13.5 NetworkManager
- 13.6 Configuring a network connection manually
- 13.7 Basic router setup
- 13.8 Setting up bonding devices
- 13.9 Setting up team devices for Network Teaming
- 13.10 Software-defined networking with Open vSwitch
- 14 UEFI (Unified Extensible Firmware Interface)
- 15 Special system features
- 16 Dynamic kernel device management with
udev - 16.1 The
/devdirectory - 16.2 Kernel
ueventsandudev - 16.3 Drivers, kernel modules and devices
- 16.4 Booting and initial device setup
- 16.5 Monitoring the running
udevdaemon - 16.6 Influencing kernel device event handling with
udevrules - 16.7 Persistent device naming
- 16.8 Files used by
udev - 16.9 More information
- 16.1 The
- III Services
- 17 SLP
- 18 Time synchronization with NTP
- 19 The domain name system
- 20 DHCP
- 21 Samba
- 22 Sharing file systems with NFS
- 23 On-demand mounting with autofs
- 24 The Apache HTTP server
- 24.1 Quick start
- 24.2 Configuring Apache
- 24.3 Starting and stopping Apache
- 24.4 Installing, activating and configuring modules
- 24.5 Enabling CGI scripts
- 24.6 Setting up a secure Web server with SSL
- 24.7 Running multiple Apache instances on the same server
- 24.8 Avoiding security problems
- 24.9 Troubleshooting
- 24.10 More information
- 25 Setting up an FTP server with YaST
- 26 Squid caching proxy server
- 26.1 Facts about proxy servers
- 26.2 System requirements
- 26.3 Basic usage of Squid
- 26.4 The YaST Squid module
- 26.5 The Squid configuration file
- 26.6 Configuring a transparent proxy
- 26.7 Using the Squid cache manager CGI interface (
cachemgr.cgi) - 26.8 Cache report generation with Calamaris
- 26.9 More Information
- IV Mobile computers
- A An example network
- B GNU licenses
List of Figures
- 1.1 Main window of YaST in text mode
- 1.2 The software installation module
- 3.1 Boot loader: snapshots
- 4.1 vncviewer
- 4.2 Remmina's main window
- 4.3 Remote desktop preference
- 4.4 Quick-starting
- 4.5 Remmina viewing remote session
- 4.6 Reading path to the profile file
- 4.7 Remote administration
- 4.8 VNC session settings
- 4.9 Joining a persistent VNC session
- 5.1 The YaST partitioner
- 5.2 Btrfs subvolumes in YaST partitioner
- 5.3 Creating a volume group
- 5.4 Logical volume management
- 5.5 RAID partitions
- 6.1 The YaST software manager: multiversion view
- 10.1 Services Manager
- 11.1 YaST systemd journal
- 12.1 GRUB 2 boot editor
- 12.2 Boot code options
- 12.3 Boot loader options
- 12.4 Kernel parameters
- 13.1 Simplified layer model for TCP/IP
- 13.2 TCP/IP Ethernet packet
- 13.3 Configuring network settings
- 13.4
wickedarchitecture - 14.1 Secure boot support
- 14.2 UEFI: secure boot process
- 18.1 NTP configuration window
- 18.2 Adding a time server
- 19.1 DNS server installation: forwarder settings
- 19.2 DNS server installation: DNS zones
- 19.3 DNS server installation: finish wizard
- 19.4 DNS server: logging
- 19.5 DNS server: Zone Editor (Basics)
- 19.6 DNS server: Zone Editor (NS Records)
- 19.7 DNS server: Zone Editor (MX Records)
- 19.8 DNS server: Zone Editor (SOA)
- 19.9 Adding a record for a primary zone
- 19.10 Adding a reverse zone
- 19.11 Adding a reverse record
- 20.1 DHCP server: card selection
- 20.2 DHCP server: global settings
- 20.3 DHCP server: dynamic DHCP
- 20.4 DHCP server: start-up
- 20.5 DHCP server: host management
- 20.6 DHCP server: chroot jail and declarations
- 20.7 DHCP server: selecting a declaration type
- 20.8 DHCP server: configuring subnets
- 20.9 DHCP server: TSIG configuration
- 20.10 DHCP server: interface configuration for dynamic DNS
- 20.11 DHCP server: network interface and firewall
- 21.1 Determining Windows domain membership
- 21.2 Windows Explorer dialog
- 21.3 Windows Explorer directory listing with compressed files
- 21.4 Adding a new Samba share with snapshots enabled
- 21.5 The tab in Windows explorer
- 22.1 NFS server configuration tool
- 24.1 HTTP server wizard: default host
- 24.2 HTTP server wizard: summary
- 24.3 HTTP server configuration: listen ports and addresses
- 24.4 HTTP server configuration: server modules
- 25.1 FTP server configuration — start-up
- 27.1 Integrating a mobile computer in an existing environment
- 28.1 GNOME Network Connections dialog
List of Tables
- 2.1 Essential RPM query options
- 2.2 RPM verify options
- 7.1 Generating PFL from fontconfig rules
- 7.2 Results from generating PFL from fontconfig rules with changed order
- 7.3 Results from generating PFL from fontconfig rules
- 10.1 Service management commands
- 10.2 Commands for enabling and disabling services
- 10.3 System V runlevels and
systemdtarget units - 13.1 Private IP address domains
- 13.2 Parameters for /etc/host.conf
- 13.3 Databases available via /etc/nsswitch.conf
- 13.4 Configuration options for NSS “databases”
- 13.5 Feature comparison between bonding and team
- 15.1
ulimit: Setting resources for the user - 27.1 Use cases for NetworkManager
- 27.2 Overview of various Wi-Fi standards
List of Examples
- 2.1 Zypper—list of known repositories
- 2.2
rpm -q -i wget - 2.3 Script to search for packages
- 3.1 Example timeline configuration
- 7.1 Specifying rendering algorithms
- 7.2 Aliases and family name substitutions
- 7.3 Aliases and family name substitutions
- 7.4 Aliases and family names substitutions
- 10.1 List active services
- 10.2 List failed services
- 10.3 List all processes belonging to a service
- 12.1 Usage of grub2-mkconfig
- 12.2 Usage of grub2-mkrescue
- 12.3 Usage of grub2-script-check
- 12.4 Usage of grub2-once
- 13.1 Writing IP addresses
- 13.2 Linking IP addresses to the netmask
- 13.3 Sample IPv6 address
- 13.4 IPv6 address specifying the prefix length
- 13.5 Common network interfaces and some static routes
- 13.6
/var/run/netconfig/resolv.conf - 13.7
/etc/hosts - 13.8
/etc/networks - 13.9
/etc/host.conf - 13.10
/etc/nsswitch.conf - 13.11 Output of the command ping
- 13.12 Configuration for load balancing with Network Teaming
- 13.13 Configuration for DHCP Network Teaming device
- 15.1 Entry in /etc/crontab
- 15.2 /etc/crontab: remove time stamp files
- 15.3
ulimit: Settings in~/.bashrc - 16.1 Example
udevrules - 19.1 Forwarding options in named.conf
- 19.2 A basic /etc/named.conf
- 19.3 Entry to disable logging
- 19.4 Zone entry for example.com
- 19.5 Zone entry for example.net
- 19.6 The /var/lib/named/example.com.zone file
- 19.7 Reverse lookup
- 20.1 The configuration file /etc/dhcpd.conf
- 20.2 Additions to the configuration file
- 21.1 A CD-ROM share
- 21.2 [homes] share
- 21.3 Global section in smb.conf
- 21.4 Using
rpcclientto request a Windows server 2012 share snapshot - 24.1 Basic examples of name-based
VirtualHostentries - 24.2 Name-based
VirtualHostdirectives - 24.3 IP-based
VirtualHostdirectives - 24.4 Basic
VirtualHostconfiguration - 24.5 VirtualHost CGI configuration
- 26.1 A request with
squidclient - 26.2 Defining ACL rules
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