https://ubuntu.com/server/docs/how-to/installation/interactive-live-server-installation-on-ibm-z-vm-s390x/
Interactive live server installation on IBM z/VM (s390x) - Ubuntu Server documentation
Interactive Ubuntu Server installation on IBM z/VM (s390x) using the live server installer with manual configuration steps.
server installationibm zubuntu documentationinteractivelive
https://ubuntu.com/server/docs/how-to/installation/how-to-netboot-the-server-installer-on-amd64/
How to netboot the server installer on amd64 - Ubuntu Server documentation
Network boot the Ubuntu Server installer on amd64 systems using PXE in UEFI or legacy BIOS mode with DHCP, TFTP, and PXELINUX configuration.
how toubuntu documentationserverinstalleramd64
https://ubuntu.com/server/docs/how-to/samba/member-server-in-an-ad-domain/
Member server in an Active Directory domain - Ubuntu Server documentation
Join Samba server to Active Directory domain using realmd to serve files and printers with SMB authentication for AD users.
in anactive directoryubuntu documentationmemberserver
https://ubuntu.com/server/docs/how-to/networking/install-isc-dhcp-server/
How to install and configure isc-dhcp-server - Ubuntu Server documentation
Install and configure the legacy isc-dhcp-server DHCP daemon on Ubuntu. Note - This software is no longer vendor-supported; use Kea instead.
how to installisc dhcpubuntu documentationconfigureserver
https://translations.launchpad.net/ubuntu-docs/+translations
Translations : Ubuntu Documentation
ubuntu documentationtranslations
https://help.ubuntu.com/legal.html
Official Ubuntu Documentation
ubuntu documentationofficial
https://ubuntu.com/server/docs/how-to/databases/install-mysql/
Install and configure a MySQL server - Ubuntu Server documentation
Install and configure MySQL database server on Ubuntu for mission-critical, multi-threaded SQL database applications and workloads.
install and configuremysql serverubuntu documentation
https://ubuntu.com/server/docs/how-to/samba/print-server/
Set up Samba as a print server - Ubuntu Server documentation
Configure Samba as a print server to share CUPS printers with Windows clients over the network with or without authentication.
set upprint serverubuntu documentationsamba
https://help.ubuntu.com/
Official Ubuntu Documentation
ubuntu documentationofficial
https://docs.ubuntu.com/
Ubuntu documentation
The docs directory for all Ubuntu operating systems and products.
ubuntu documentation
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https://documentation.ubuntu.com/core/explanation/community-engagement/
Community engagement - Ubuntu Core documentation
Engage with the Ubuntu Core community. Learn about contributing to snapd, kernel snaps, gadget snaps, and documentation.
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https://ubuntu.com/server/docs/explanation/networking/configuring-networks/
Configuring networks - Ubuntu Server documentation
Learn about network configuration options on Ubuntu Server, including Netplan, interfaces, and network management approaches.
ubuntu server documentationconfiguringnetworks
https://documentation.ubuntu.com/core/how-to-guides/manage-ubuntu-core/add-a-system-user/
Add a system user - Ubuntu Core documentation
Add system users to Ubuntu Core devices. Create users via system-user assertions for device access without console-conf.
ubuntu coreaddsystemuserdocumentation
https://ubuntu.com/server/docs/how-to/mail-services/
Mail services - Ubuntu Server documentation
Configure mail services on Ubuntu Server with installation and configuration guides for Postfix, Exim4, and Dovecot.
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https://ubuntu.com/server/docs/explanation/active-directory/identity-mapping-idmap-backends/
Identity Mapping (idmap) backends - Ubuntu Server documentation
Introduction to identity mapping (idmap) backends for mapping Windows SIDs to Unix UIDs and GIDs in Active Directory integration.
ubuntu server documentationidentitymappingbackends
https://canonical-robotics.readthedocs-hosted.com/en/latest/tutorials/snaps-core/
From zero to hero: deploy a robot with snaps and Ubuntu Core - Robotics documentation
This series of tutorials introduce you to using snaps and Ubuntu Core for deploying ROS-based robots. Starting from a fresh install, these guides take you...
zero to heroubuntu corerobotics documentationdeploysnaps
https://ubuntu.com/server/docs/explanation/performance/perf-tune-cpupower/
The cpupower tool - Ubuntu Server documentation
Learn about CPU governors and the cpupower tool for managing CPU frequency scaling and power management on Ubuntu Server.
ubuntu server documentationtool
https://ubuntu.com/server/docs/explanation/software/third-party-repository-usage/
Third party repository usage - Ubuntu Server documentation
Learn about using third-party repositories on Ubuntu Server, including security considerations and best practices.
ubuntu server documentationthird partyrepositoryusage
https://ubuntu.com/server/docs/explanation/networking/networking-key-concepts/
Networking key concepts - Ubuntu Server documentation
Understand essential networking concepts including TCP/IP, routing, DNS, and other fundamental protocols for Ubuntu Server networking.
ubuntu server documentationkey conceptsnetworking
https://ubuntu.com/server/docs/how-to/backups/install-bacula/
How to install and configure Bacula - Ubuntu Server documentation
Install and configure Bacula cross-platform backup management system for network-wide backup, restore, and verification operations.
how to installubuntu server documentationconfigurebacula
https://documentation.ubuntu.com/landscape/how-to-guides/ubuntu-pro/attach-ubuntu-pro/
How to attach your Ubuntu Pro subscription - Landscape documentation
Attach Ubuntu Pro subscription for enterprise lifecycle support. Enable Livepatch, FIPS packages, and security compliance with Pro tokens.
ubuntu pro subscriptionhow toattachlandscapedocumentation
https://documentation.ubuntu.com/core/explanation/recovery-modes/
Recovery modes - Ubuntu Core documentation
Understand Ubuntu Core recovery modes. Learn about install, run, recover, and factory reset functions for device management.
ubuntu corerecoverymodesdocumentation
https://ubuntu.com/server/docs/how-to/security/user-management/
User management - Ubuntu Server documentation
Manage Ubuntu Server users securely using sudo and sudo-rs for privilege escalation without requiring the root account password.
ubuntu server documentationuser management
https://documentation.ubuntu.com/core/how-to-guides/image-creation/add-console-conf/
Add console-conf - Ubuntu Core documentation
Add console-conf to Ubuntu Core images. Include interactive device onboarding interface for network and user setup configuration.
ubuntu coreaddconsoleconfdocumentation
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https://ubuntu.com/security/livepatch/docs
Livepatch Documentation | Ubuntu
Ubuntu is an open source software operating system that runs from the desktop, to the cloud, to all your internet connected things.
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https://ubuntu.com/server/docs/how-to/networking/
Networking - Ubuntu Server documentation
Ubuntu Server networking guides covering Netplan configuration, DNS/DNSSEC, FTP, DHCP, time synchronization, and network troubleshooting.
ubuntu server documentationnetworking
https://ubuntu.com/server/docs/explanation/multipath/multipath-configuration-examples/
Multipath configuration examples - Ubuntu Server documentation
Explore practical multipath configuration examples for different storage scenarios on Ubuntu Server.
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https://documentation.ubuntu.com/core/explanation/system-snaps/modem-manager/install-modem-manager/
Install Modem Manager - Ubuntu Core documentation
The ModemManager snap is currently available from the Ubuntu Store. It can be installed on any system that supports snaps but is only recommended on Ubuntu...
ubuntu coreinstallmodemmanagerdocumentation
https://ubuntu.com/server/docs/how-to/samba/share-access-controls/
Share access controls - Ubuntu Server documentation
Configure Samba share access controls by managing user authentication, permissions, and security options for shared directories.
ubuntu server documentationaccess controlsshare
https://documentation.ubuntu.com/core/explanation/system-snaps/network-manager/how-to-guides/message-logging/
Message logging - Ubuntu Core documentation
This section shows how to modify the logging levels by NetworkManager. NetworkManager supports on the fly changing of the logging levels and allows for a fine...
ubuntu coremessageloggingdocumentation
https://ubuntu.com/server/docs/explanation/storage/about-lvm/
About Logical Volume Management (LVM) - Ubuntu Server documentation
Learn about Logical Volume Management (LVM) on Ubuntu Server for flexible disk storage management and dynamic volume resizing.
ubuntu server documentationlogicalvolumemanagementlvm
https://documentation.ubuntu.com/core/explanation/stores/brand-accounts/
Brand accounts - Ubuntu Core documentation
Learn about brand accounts for Ubuntu Core. Manage dedicated snap stores with signing keys and device models.
ubuntu corebrandaccountsdocumentation
https://ubuntu.com/server/docs/how-to/openldap/ldap-and-tls/
LDAP and Transport Layer Security (TLS) - Ubuntu Server documentation
Secure OpenLDAP authentication with Transport Layer Security (TLS) by creating certificates and configuring encrypted sessions.
transport layer securityubuntu server documentationldaptls
https://canonical-robotics.readthedocs-hosted.com/en/latest/explanations/ubuntu-core/
Ubuntu Core - Robotics documentation
Ubuntu Core is a version of the Ubuntu operating system designed and engineered for IoT and embedded systems. Ubuntu Core updates itself and its applications...
ubuntu corerobotics documentation
https://documentation.ubuntu.com/core/explanation/security-and-sandboxing/
Security and sandboxing - Ubuntu Core documentation
Understand Ubuntu Core security and sandboxing. Learn about snap confinement, interfaces, and security policies.
ubuntu coresecuritysandboxingdocumentation
https://canonical-ibm.readthedocs-hosted.com/
Ubuntu on IBM documentation
Discover Ubuntu on IBM Cloud, including optimized images, deployment guides, and best practices for cloud workloads.
ibm documentationubuntu
https://ubuntu.com/server/docs/how-to/mail-services/install-dovecot/
Install and configure Dovecot - Ubuntu Server documentation
Install and configure Dovecot IMAP and POP3 server with basic SSL configuration.
install and configureubuntu server documentationdovecot
https://documentation.ubuntu.com/core/explanation/how-installation-works/
How installation works - Ubuntu Core documentation
Understand how Ubuntu Core installation works. Learn the six-step installation process and snap provisioning mechanism.
ubuntu coreinstallationworksdocumentation
https://ubuntu.com/server/docs/how-to/networking/dpdk-with-open-vswitch/
How to use Open vSwitch with DPDK - Ubuntu Server documentation
Install and configure Open vSwitch with DPDK support on Ubuntu for high-performance networking with libvirt and qemu-kvm integration.
how to useubuntu server documentationopen
https://ubuntu.com/server/docs/how-to/virtualisation/lxd/
LXD containers and virtual machines - Ubuntu Server documentation
Install and manage LXD system containers and virtual machines with command-line administration for development and production workloads.
ubuntu server documentationvirtual machineslxdcontainers
https://ubuntu.com/kubernetes/charmed-k8s/docs
Kubernetes documentation | Ubuntu
Documentation for Charmed Kubernetes.
kubernetes documentationubuntu
https://documentation.ubuntu.com/core/how-to-guides/manage-ubuntu-core/use-a-recovery-mode/
Use a recovery mode - Ubuntu Core documentation
Use recovery modes on Ubuntu Core devices. Access recovery options for device repair, restoration, or reinstallation.
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https://ubuntu.com/server/docs/explanation/data-and-storage/
Data and storage - Ubuntu Server documentation
Understanding data management and storage in Ubuntu Server including OpenLDAP directory services, databases, and storage solutions.
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https://ubuntu.com/server/docs/explanation/intro-to/virtualisation/
Introduction to virtualization - Ubuntu Server documentation
Introduction to the concepts of virtualization and containers on Ubuntu Server.
ubuntu server documentationintroductionvirtualization
https://ubuntu.com/server/docs/how-to/virtualisation/sev-snp/
Confidential Computing with AMD - Ubuntu Server documentation
Enable AMD SEV-SNP confidential computing on Ubuntu 25.04 to run encrypted VMs with memory and register protection from the host.
ubuntu server documentationconfidential computingamd
https://documentation.ubuntu.com/core/explanation/cve-remediation/
CVE remediation in Ubuntu Core - Ubuntu Core documentation
Understand CVE remediation in Ubuntu Core. Learn how security fixes are delivered through snap revisions.
cve remediationubuntu coredocumentation
https://ubuntu.com/server/docs/tutorial/basic-installation/
Basic installation - Ubuntu Server documentation
Learn how to install Ubuntu Server with this step-by-step guide covering system requirements, ISO download, bootable USB creation, and installation process.
ubuntu server documentationbasic installation
https://documentation.ubuntu.com/core/tutorials/try-pre-built-images/install-on-a-vm/
Install on a VM - Ubuntu Core documentation
Install Ubuntu Core in a virtual machine with Multipass. Try pre-built images without dedicated hardware requirements.
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https://ubuntu.com/server/docs/reference/
Ubuntu Server reference - Ubuntu Server documentation
Complete reference documentation for Ubuntu Server, including glossary, system requirements, and technical specifications.
ubuntu serverreference documentation
https://ubuntu.com/server/docs/
Ubuntu Server documentation
Official Ubuntu Server documentation - comprehensive guides for installation, configuration, security, networking, databases, virtualization, and system...
ubuntu server documentation
https://documentation.ubuntu.com/core/tutorials/build-your-first-image/create-a-model/
Create a model - Ubuntu Core documentation
Create a model assertion for Ubuntu Core images. Download and customize model files with your selected snaps.
create a modelubuntu coredocumentation
https://documentation.ubuntu.com/desktop/en/latest/how-to/create-a-bootable-usb-stick/
Create a bootable USB stick - Ubuntu Desktop documentation
Topics: Installation Windows macOS You can convert your USB stick (USB flash drive) into Ubuntu installation media. This is different from copying a file to...
usb stickubuntu desktopcreatedocumentation
https://documentation.ubuntu.com/core/explanation/system-snaps/network-manager/how-to-guides/configure-the-snap/
Configure the snap - Ubuntu Core documentation
The Network Manager snap includes its own configuration options, separate from those of Network Manager itself. Documentation of the D-Bus API is provided by...
the snapubuntu coreconfiguredocumentation
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https://ubuntu.com/server/docs/how-to/openldap/ldap-saslauthd-authentication-intro/
How to configure OpenLDAP with passthrough authentication - Ubuntu Server documentation
Introduction to configuring OpenLDAP passthrough authentication using SASL library and saslauthd daemon for external password storage.
ubuntu server documentationhow toconfigureopenldappassthrough
https://documentation.ubuntu.com/core/reference/assertions/account-key/
account-key - Ubuntu Core documentation
The account-key assertion holds a public key belonging to an account. This assertion is used to transmit key information between the store and snapd, enabling...
ubuntu coreaccountkeydocumentation
https://documentation.ubuntu.com/core/how-to-guides/container-deployment/run-a-docker-container/
Run a Docker container - Ubuntu Core documentation
Run Docker containers on Ubuntu Core. Install Docker Engine snap and execute containerized applications with proper interface permissions.
docker containerubuntu corerundocumentation
https://documentation.ubuntu.com/gcp/
Ubuntu on GCP documentation
Discover Ubuntu on Google Cloud Platform (GCP), including optimized images, deployment guides, and best practices for cloud workloads.
ubuntugcpdocumentation
https://ubuntu.com/server/docs/explanation/intro-to/sssd/
Introduction to network user authentication with SSSD - Ubuntu Server documentation
Introduction to SSSD (System Security Services Daemon) for centralized authentication and identity management from network sources.
ubuntu server documentationuser authenticationintroductionnetworksssd
https://documentation.ubuntu.com/core/contributing/
Contribute to our docs - Ubuntu Core documentation
Contribute to Ubuntu Core documentation. Learn how to write, improve, and submit contributions through the Open Documentation Academy.
our docsubuntu corecontributedocumentation
https://documentation.ubuntu.com/project/
Ubuntu project documentation
Ubuntu is the world’s most widely deployed Linux operating system. It’s also a long-standing software project, with a mesh of distributed processes and...
ubuntu projectdocumentation
https://ubuntu.com/server/docs/how-to/kerberos/configure-service-principals/
How to configure Kerberos service principals - Ubuntu Server documentation
Step-by-step guide to creating and configuring Kerberos service principals and keytabs for services running on your network.
ubuntu server documentationhow toconfigurekerberosservice
https://ubuntu.com/server/docs/reference/other-tools/pam-motd/
pam_motd - Ubuntu Server documentation
Reference documentation for pam_motd, the PAM infrastructure that generates and displays message-of-the-day on login at an Ubuntu Server.
ubuntu server documentationpammotd
https://documentation.ubuntu.com/aws/aws-how-to/instances/find-ubuntu-images/
Find Ubuntu images on AWS - Ubuntu on AWS documentation
Learn how to find and select Ubuntu AMIs for EC2 and EKS. Includes methods using SSM Parameter Store, describe-images API, and AWS Console, with tips for...
on awsfindubuntuimagesdocumentation
https://ubuntu.com/server/docs/explanation/performance/perf-p-states/
CPU Power states - Ubuntu Server documentation
Learn about Energy Performance Preference (EPP) settings for optimizing power consumption and performance on Ubuntu Server.
ubuntu server documentationcpupowerstates
https://documentation.ubuntu.com/core/how-to-guides/deploy-an-image/
Deploy an image - Ubuntu Core documentation
Learn how to build, deploy, and manage Ubuntu Core images and devices. These how-to guides provide practical instructions for common tasks and workflows in...
an imageubuntu coredeploydocumentation
https://ubuntu.com/ceph/docs
Charmed Ceph documentation | Ubuntu
Ubuntu is an open source software operating system that runs from the desktop, to the cloud, to all your internet connected things.
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https://documentation.ubuntu.com/azure/azure-how-to/instances/find-ubuntu-images/
Find Ubuntu images on Azure - Ubuntu on Azure documentation
Learn how to find and select different Ubuntu images on Microsoft Azure. Includes URNs for LTS, interim releases, Pro, CVM, FIPS-compliant, and CIS-hardened...
on azurefindubuntuimagesdocumentation
https://documentation.ubuntu.com/core/explanation/
Explanation - Ubuntu Core documentation
Explanations of Ubuntu Core architecture, design, and operational models. Learn how the system works under the hood and why it is designed for IoT, embedded,...
ubuntu coreexplanationdocumentation
https://documentation.ubuntu.com/core/explanation/system-snaps/network-manager/how-to-guides/configure-the-snap/connectivity-check/
Connectivity check - Ubuntu Core documentation
Connectivity checking is a NetworkManager functionality that allows periodically testing whether the system can actually access the internet or not. The...
ubuntu coreconnectivitycheckdocumentation
https://canonical-ubuntu-hardware-support.readthedocs-hosted.com/image-cookbook/
Image cookbook - Ubuntu hardware support documentation
The Image Cookbook is meant to help users to spin Ubuntu based images for hardware that is not yet supported by the Ubuntu distribution. It will guide you...
hardware supportimagecookbookubuntudocumentation
https://ubuntu.com/server/docs/how-to/networking/chrony-client/
Synchronize time using chrony - Ubuntu Server documentation
Learn how to synchronize time on Ubuntu using chrony, check client status with timedatectl and chronyc, and query time accuracy.
ubuntu server documentationsynchronizetimeusingchrony
https://documentation.ubuntu.com/core/reference/assertions/snap-resource-revision/
snap-resource-revision - Ubuntu Core documentation
Snap-resource-revision assertion reference. Version metadata and integrity verification for snap components.
ubuntu coresnapresourcerevisiondocumentation
https://ubuntu.com/server/docs/how-to/samba/provision-samba-ad-controller/
Provisioning a Samba Active Directory Domain Controller - Ubuntu Server documentation
Bootstrap and provision a Samba Active Directory Domain Controller for authentication services without file or print sharing.
ubuntu server documentationactive directoryprovisioningsambadomain
https://ubuntu.com/server/docs/how-to/observability/
Observability - Ubuntu Server documentation
Monitor Ubuntu Server with Canonical Observability Stack, LMA stack, Logwatch, Munin, and Nagios installation guides.
ubuntu server documentationobservability
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https://ubuntu.com/server/docs/how-to/wireguard-vpn/
WireGuard VPN - Ubuntu Server documentation
Set up WireGuard VPN on Ubuntu Server for peer-to-site and site-to-site connections with security tips and troubleshooting.
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https://documentation.ubuntu.com/core/explanation/system-snaps/console-conf/
console-conf - Ubuntu Core documentation
console-conf snap for Ubuntu Core. Initial user and network configuration interface for Ubuntu Core devices.
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https://ubuntu.com/server/docs/explanation/security/security_suggestions/
Security suggestions - Ubuntu Server documentation
Understand security best practices and recommendations for hardening and protecting Ubuntu Server deployments.
ubuntu server documentationsecuritysuggestions
https://ubuntu.com/server/docs/how-to/graphics/
Graphics - Ubuntu Server documentation
Configure GPU support on Ubuntu Server including NVIDIA driver installation and virtual GPU (vGPU) setup with QEMU/KVM.
ubuntu server documentationgraphics
https://serverpilot.io/docs/servers/packages/mysql/
MySQL versions on Ubuntu | ServerPilot Documentation
Learn which MySQL version is installed on your server and whether your server still receives MySQL updates.
mysqlversionsubuntuserverpilotdocumentation
https://documentation.ubuntu.com/core/explanation/system-snaps/upower/
Upower - Ubuntu Core documentation
Upower on Ubuntu Core. Monitor power devices and battery statistics for power management.
ubuntu coreupowerdocumentation
https://ubuntu.com/server/docs/how-to/samba/mount-cifs-shares-permanently/
How to mount CIFS shares permanently - Ubuntu Server documentation
Configure automatic mounting of CIFS shares at boot from Windows or Samba servers for persistent network file access on Ubuntu.
ubuntu server documentationhow tomountcifsshares
https://documentation.ubuntu.com/core/how-to-guides/manage-ubuntu-core/test-on-qemu/
Test on QEMU - Ubuntu Core documentation
Test Ubuntu Core on QEMU virtual machines. Deploy and test images with KVM, OVMF, and optional TPM emulation.
ubuntu coretestqemudocumentation
https://documentation.ubuntu.com/core/reference/assertions/repair/
repair - Ubuntu Core documentation
Repair assertion reference. Last-resort recovery mechanism to restore unresponsive Ubuntu Core devices.
ubuntu corerepairdocumentation
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https://documentation.ubuntu.com/core/tutorials/build-your-first-image/requirements/
Requirements - Ubuntu Core documentation
Check tutorial requirements for building Ubuntu Core images. Prerequisites for host system and Raspberry Pi hardware setup.
ubuntu corerequirementsdocumentation
https://documentation.ubuntu.com/landscape/how-to-guides/iot-for-devices/create-a-core-image/
How to create an Ubuntu Core image with Landscape Client included - Landscape documentation
Build custom Ubuntu Core images with Landscape Client snap pre-installed. Auto-register IoT devices at first boot for scaled deployments.
how to createubuntu coreimagelandscapeclient
https://documentation.ubuntu.com/desktop/en/latest/tutorial/try-ubuntu-desktop/
Try Ubuntu Desktop - Ubuntu Desktop documentation
Topics: Introduction In this tutorial, you’ll try Ubuntu Desktop 24.04 LTS on your computer without making any permanent changes. Ubuntu Desktop will run from...
ubuntu desktoptrydocumentation
https://documentation.ubuntu.com/core/reference/release-notes/
Release notes - Ubuntu Core documentation
Ubuntu Core release notes. Latest features, updates, and release information for Ubuntu Core versions.
release notesubuntu coredocumentation
https://documentation.ubuntu.com/oracle/oracle-how-to/find-ubuntu-images/
Find Ubuntu images on Oracle Cloud - Ubuntu on Oracle documentation
Learn how to find Ubuntu images on Oracle Cloud using the web console and CLI, and also to find images for OKE worker nodes.
oracle cloudfindubuntuimagesdocumentation
https://documentation.ubuntu.com/core/how-to-guides/image-creation/use-ubuntu-image/
Use ubuntu-image - Ubuntu Core documentation
Use ubuntu-image tool to build Ubuntu Core images. Compile bootable images from model assertions with optional custom snaps.
useubuntuimagecoredocumentation
https://ubuntu.com/server/docs/how-to/installation/choosing-between-the-arm64-and-arm64-largemem-installer-options/
Choose between the arm64 and arm64+largemem installer options - Ubuntu Server documentation
Choose between Ubuntu Server arm64 (4k page size) and arm64+largemem (64k page size) installer options based on your workload requirements.
ubuntu server documentationchoosearm64installeroptions
https://ubuntu.com/server/docs/how-to/security/smart-card-authentication/
Smart card authentication - Ubuntu Server documentation
Configure smart card authentication on Ubuntu Server 20.04+ using SSSD, pcscd, and PIV/CAC drivers for two-factor security.
smart card authenticationubuntu server documentation
https://ubuntu.com/server/docs/how-to/web-services/install-php/
How to install and configure PHP - Ubuntu Server documentation
Install PHP scripting language with Apache2 and MySQL on Ubuntu Server for web development and dynamic HTML applications.
how to installubuntu server documentationconfigurephp
https://ubuntu.com/server/docs/how-to/sssd/
Network user authentication with SSSD - Ubuntu Server documentation
Configure network user authentication with SSSD on Ubuntu Server for Active Directory, LDAP, and Kerberos integration.
ubuntu server documentationuser authenticationnetworksssd
https://ubuntu.com/server/docs/how-to/kerberos/set-up-secondary-kdc/
How to set up secondary KDC - Ubuntu Server documentation
Set up a secondary Key Distribution Center (KDC) for high availability and redundancy in your Kerberos infrastructure.
ubuntu server documentationhow toset upsecondary
https://ubuntu.com/server/docs/explanation/software/about-apt-upgrade-and-phased-updates/
About apt upgrade and phased updates - Ubuntu Server documentation
Learn how apt upgrade and phased updates work on Ubuntu Server, including rollout strategies and update management.
ubuntu server documentationaptupgradeupdates
https://ubuntu.com/server/docs/explanation/networking/about-time-synchronisation/
About time synchronisation - Ubuntu Server documentation
Understand time synchronisation protocols and services, including NTP and chrony, for maintaining accurate system time on Ubuntu Server.
ubuntu server documentationabout timesynchronisation