Администрирование Linux

Overview

The first of two courses covering the core system administration tasks needed to manage Red Hat Enterprise Linux servers.

Red Hat System Administration I (RH124) is designed for IT professionals without previous Linux system administration experience. The course provides students with Linux administration competence by focusing on core administration tasks. This course also provides a foundation for students who plan to become full-time Linux system administrators by introducing key command-line concepts and enterprise-level tools.

This course is the first of a two-course series that takes a computer professional without Linux system administration knowledge to become a fully capable Linux administrator. These concepts are further developed in the follow-on course, Red Hat System Administration II (RH134).

This course is based on Red Hat® Enterprise Linux 9.0.

Objectives

Introduce Linux and the Red Hat Enterprise Linux ecosystem.
Run commands and view shell environments.
Manage, organize, and secure files.
Manage users, groups and user security policies.
Control and monitor systemd services.
Configure remote access using the web console and SSH.
Configure network interfaces and settings.
Archive and copy files from one system to another.
Manage software using DNF

Audience for this course

The primary persona is a technical professional with current or pending responsibilities as a Linux enterprise or cloud system administrator.
This course is popular in Red Hat Academy, and is targeted at the student who is planning to become a technical professional using Linux.

Prerequisites for this course

Basic technical user skills with computer applications on some operating systems are expected.
Take our free assessment to gauge whether this offering is the best fit for your skills.

Technology considerations

There are no special technical requirements for this course.
This course is not designed for bring your own device (BYOD).
Internet access is not required but is recommended so that students can research and browse Red Hat online resources.

Outline

1. Get started with Red Hat Enterprise Linux

Describe and define open source, Linux distributions, and Red Hat Enterprise Linux.

2. Access the command line

Log into a Linux system and run simple commands using the shell.

3. Manage files from the command line

Copy, move, create, delete, and organize files while working from the bash shell.

4. Get help in Red Hat Enterprise Linux

Resolve problems by using local help systems.

5. Create, view, and edit text files

Manage text files from command output or in a text editor.

6. Manage local users and groups

Create, manage, and delete local users and groups, as well as administer local password policies.

7. Control access to files

Set Linux file system permissions on files and interpret the security effects of different permission settings.

8. Monitor and manage Linux processes

Evaluate and control processes running on a Red Hat Enterprise Linux system.

9. Control services and daemons

Control and monitor network services and system daemons using systemd.

10. Configure and secure SSH

Configure secure command line service on remote systems, using OpenSSH.

11. Analyze and store logs

Locate and accurately interpret logs of system events for troubleshooting purposes.

12. Manage networking

Configure network interfaces and settings on Red Hat Enterprise Linux servers.

13. Archive and transfer files

Archive and copy files from one system to another.

14. Install and update software packages

Download, install, update, and manage software packages from Red Hat and DNF package repositories.

15. Access Linux files systems

Access, inspect, and use existing file systems on storage attached to a Linux server.

16. Analyze servers and get support

Investigate and resolve issues in the web-based management interface, getting support from Red Hat to help solve problems.

17. Comprehensive review

Review the content covered in this course by completing hands-on exercises.

Course Description:

Build the skills to perform the key tasks needed to become a full-time Linux administrator
Red Hat System Administration II (RH134) serves as the second part of the RHCSA training track for IT professionals who have taken Red Hat System Administration I (RH124). The course goes deeper into core Linux system administration skills in storage configuration and management, installation and deployment of Red Hat® Enterprise Linux®, management of security features such as SELinux, control of recurring system tasks, management of the boot process and troubleshooting, basic system tuning, and command-line automation and productivity.
Experienced Linux administrators looking for rapid preparation for the RHCSA certification should instead start with RHCSA Rapid Track (RH199).
This course is based on Red Hat Enterprise Linux 9.0.

This course will help you:

Install Red Hat Enterprise Linux using scalable methods
Access security files, file systems, and networks
Execute shell scripting and automation techniques
Manage storage devices, logical volumes, and file systems
Manage security and system access
Control the boot process and system services
Run containers

Who Should Enroll

This course is geared toward Windows system administrators, network administrators, and other system administrators who are interested in supplementing current skills or backstopping other team members, in addition to Linux system administrators who are responsible for these tasks:

Configuring, installing, upgrading, and maintaining Linux systems using established standards and procedures
Providing operational support
Managing systems for monitoring system performance and availability
Writing and deploying scripts for task automation and system administration

What to Expect in the Exam:

The 200-301 CCNA exam certifies your knowledge and skills related to network fundamentals, network access, IP connectivity, IP services,
security fundamentals, and automation and programmability.
After you pass 200-301 CCNA, you earn CCNA certification.

After taking this course, you should be able to:

Successful completion of Red Hat System Administration I (RH124) is recommended.
Experienced Linux administrators seeking to accelerate their path toward becoming a Red Hat Certified System Administrator should start with the RHCSA Rapid Track course (RH199).
Take our free assessment to gauge whether this offering is the best fit for your skills.

Before taking this course, you should have:

There are no special technology requirements.
This course is not designed for bring your own device (BYOD).
Internet access is not required, but is recommended to allow students to research and access Red Hat online resources.

Course Outline:

1. Improve command line productivity

Run commands more efficiently by using advanced features of the Bash shell, shell scripts, and various utilities provided by Red Hat Enterprise Linux.

2. Schedule future tasks

Schedule commands to run in the future, either one time or on a repeating schedule.

3. Tune system performance

Improve system performance by setting tuning parameters and adjusting scheduling priority of processes.

4. Manage SELinux security

Protect and manage the security of a server by using SELinux.

5. Manage logical volumes

Create and manage logical volumes containing file systems and swap spaces from the command line.

6. Access network-attached storage

Use the NFS protocol to administer network-attached storage.

7. Control the boot process

Manage the boot process to control services offered and to troubleshoot and repair problems.

8. Manage network security

Control network connections to services using the system firewall and SELinux rules.

9. Install Red Hat Enterprise Linux

Install Red Hat Enterprise Linux on servers and virtual machines.

10. Run Containers

Obtain, run, and manage simple, lightweight services as containers on a single Red Hat Enterprise Linux server.

Course Description:

Broaden your ability to administer Linux systems and prepare for your Red Hat Certified Engineer (RHCE) exam
Red Hat System Administration III: Data Center Services for Red Hat Enterprise Linux 7 (RH254) is designed for experienced Linux® system administrators who hold a Red Hat Certified System Administrator (RHCSA®) credential or possess equivalent skills and want to broaden their ability to administer Linux systems at an enterprise level.
This course is based on Red Hat® Enterprise Linux 7.
The course is focused on deploying and managing network servers running caching domain name service (DNS), MariaDB, Apache HTTPD, Postfix SMTP nullclients, network file sharing with network file system (NFS) and server message block (SMB), iSCSI initiators and targets, advanced networking and firewalld configurations, and the use of bash shell scripting to help automate, configure, and troubleshoot the system. Through lectures and hands-on labs, students who have already earned the RHCSA credential will be exposed to all competencies covered by the Red Hat Certified Engineer (RHCE) exam (EX300).
Note: This course does not cover all RHCSA tasks. Students who need a review of RHCSA skills are encouraged to attend the RHCSA Rapid Track course (RH199).

This course will help you:

This course is intended for experienced Linux administrators wishing to learn enterprise-level automation techniques through scripting, how to deploy and secure network services, and how to manage other key security features of Red Hat Enterprise Linux. Prior to taking this course, you should have earned your RHCSA or possess equivalent skills.

Who Should Enroll

RHCSA certification or equivalent experience
For candidates who have not earned their RHCSA certification, confirmation of the correct skills and knowledge can be obtained by passing the online skills assessment.

Course Outline:

Control services and daemons

Review how to manage services and the boot-up process using systemctl.

Manage IPv6 networking

Configure and troubleshoot basic IPv6 networking on Red Hat Enterprise Linux systems.

Configure link aggregation and bridging

Configure and troubleshoot advanced network interface functionality including bonding, teaming, and local software bridges.

Control network port security

Permit and reject access to network services using advanced SELinux and firewalld filtering techniques.

Manage DNS for servers

Set and verify correct DNS records for systems and configure secure DNS caching.

Configure email delivery

Relay all email sent by the system to an SMTP gateway for central delivery.

Provide block-based storage

Provide and use networked iSCSI block devices as remote disks.

Provide file-based storage

Provide NFS exports and SMB file shares to specific systems and users.

Configure MariaDB databases

Provide a MariaDB SQL database for use by programs and database administrators.

Provide Apache HTTPD web service

Configure Apache HTTPD to provide Transport Layer Security (TLS)-enabled websites and virtual hosts.

Write bash scripts

Write simple shell scripts using bash.

Bash conditionals and control structures

Use bash conditionals and other control structures to write more sophisticated shell commands and scripts.

Configure the shell environment

Customize bash startup and use environment variables, bash aliases, and bash functions.

Comprehensive review

Practice and demonstrate knowledge and skills learned in this course.

Course overview

Deploy, configure, manage, and migrate virtual environments
Red Hat Virtualization (RH318) teaches you the skills needed to deploy, administer, and operate virtual machines in your organization using Red Hat® Virtualization. Through numerous hands-on exercises, you will demonstrate the ability to deploy and configure the Red Hat Virtualization infrastructure and use it to provision and manage virtual machines. This offering also prepares you for the Red Hat Certified Specialist in Virtualization exam.
This course is based on Red Hat Enterprise Virtualization 4.3 and Red Hat Enterprise Linux® 7.6 and 8, as well as Red Hat Hyperconverged Infrastructure for Virtualization 1.6.

Objectives

Configure Red Hat Virtualization
Configure networking and storage for use with Red Hat Virtualization
Manage user accounts and access to the Red Hat Virtualization environment
Install and manage virtual machines in Red Hat Virtualization
Use templates for rapid virtual machine deployment
Manage virtual machine snapshots and images
Migrate virtual machines and explore high-availability options
As a result of attending this course, you should be able to create and deploy Red Hat Virtualization and virtual servers. Using a single, full-service management interface, Red Hat Virtualization Manager, you will be able to configure, manage, and migrate systems within the virtualization environment.

Prerequisites

Become a Red Hat Certified System Administrator (RHCSA®), or demonstrate equivalent experience
Being a Red Hat Certified Engineer (RHCE®) is strongly recommended for Ansible® automation comprehension

Audience for this course

Linux system administrators, virtualization administrators, and hybrid infrastructure engineers interested in deploying large-scale virtualization solutions and managing virtual servers in their datacenters, based on the Red Hat Virtualization open virtualization management platform.

Outline for this course

1. Red Hat Virtualization overview

Explain the purpose and architecture of Red Hat Virtualization.

2. Install and configure Red Hat Virtualization

Install a minimal Red Hat Virtualization environment and use it to create a virtual machine.

3. Create and manage datacenters and clusters

Organize hypervisors into groups using datacenters and clusters.

4. Manage user accounts and roles

Configure user accounts using a central directory service, then use roles to assign access to resources based on job responsibilities.

5. Adding physical hosts

Add additional Red Hat Virtualization hosts automatically, and move and remove hosts from datacenters as needed.

6. Scale Red Hat Virtualization infrastructure

Add Red Hat Virtualization hosts automatically, configure Red Hat Enterprise Linux hosts when appropriate, and move and remove hosts from data centers as needed.

7. Manage Red Hat Virtualization networks

Separate network traffic into multiple networks on one or more interfaces to improve the performance and security of Red Hat Virtualization.

8. Manage Red Hat Virtualization storage

Create and manage data and ISO storage domains.

9. Deploy and manage virtual machines

Operate virtual machines in the Red Hat Virtualization environment.

10. Migrate virtual machines

Migrate and control automatic migration of virtual machines.

11. Manage virtual machine images

Manage virtual machine snapshots and disk images.

12. Automating virtual machine deployment

Automate deployment of virtual machines by using templates and cloud-init.

13. Back up and upgrade Red Hat Virtualization

Back up, restore, and upgrade the software in a Red Hat Virtualization environment.

13. Explore high-availability practices

Explain procedures to improve the resilience and reliability of Red Hat Virtualization by removing single points of failure and implementing high-availability features.

14. Perform comprehensive review

Demonstrate skills learned in this course by installing and configuring Red Hat Virtualization; using the platform to create and manage virtual machines; and backing up and updating components of Red Hat Virtualization.

Course Overview

Created for senior Linux® system administrators, this 4-day course strongly emphasizes lab-based activities. You’ll learn how to deploy and manage shared storage and server clusters that provide highly available network services to a mission-critical enterprise environment.
This course also helps you prepare for the Red Hat Certified Specialist in High Availability Clustering exam (EX436).

Content summary

Install and configure a Pacemaker-based high availability cluster
Create and manage highly available services
Troubleshoot common cluster issues
Work with shared storage (iSCSI) and configure multipathing
Configure GFS2 file systems

Audience for this course

Senior Linux system administrators responsible for maximizing resiliency through high-availability clustering services and using fault-tolerant shared storage technologies

Prerequisites for this course

If you want to take this course without the exam (RH436) and have not earned your RHCE®certification, you can confirm that you have the necessary knowledge by passing the online skills assessment.

Outline for this course

Clusters and storage

Get an overview of storage and cluster technologies.

Create high-availability clusters

Review and create the architecture of Pacemaker-based high-availability clusters.

Nodes and quorum

Review cluster node membership and how quorum is used to control clusters.

Fencing

Understand fencing and fencing configuration.

Resource groups

Create and configure simple resource groups to provide high-availability services to clients.

Troubleshoot high-availability clusters

Identify and troubleshoot cluster problems.

Complex resource groups

Control complex resource groups by using constraints.

Two-node clusters

Identify and work around two-node clusters issues.

ISCSI initiators

Manage iSCSI initiators for access to shared storage.

Multipath Storage

Configure redundant storage access.

Logical volume manager (LVM) clusters

Manage clustered LV.

Global File System 2

Create symmetric shared file systems.

Eliminate single points of failure

Eliminate single points of failure to increase service availability.

Comprehensive review

Set up high-availability services and storage.

Описание

Курс Linux Troubleshooting предназначен для ИТ и ИБ специалистов, желающих повысить свой
навык в поиске неисправностей в ОС Linux, курс затрагивает большинство самых популярных
областей ОС Linux, в которых могут возникать неисправности: менеджеры пакетов, сеть,
диагностика и восстановление системы при ошибках загрузки, файловые системы, резервное
копирование, оконный режим, сервис печати, планировщик, безопасность, FTP, LDAP, DNS, Samba,
почта, БД и прочее.

Аудитория

ИТ, ИБ специалисты в широком диапазоне дисциплин, которым необходимо выполнять основные
задачи администрирования Linux и всегда сопутствующий администрированию поиск
неисправностей.

Предварительные требования

Опыт системного администрирования обязателен. Курс предполагает у вас хотя бы минимальные
знания ОС Linux

Содержание

Модуль 1. Методология поиска неисправностей в ОС Linux

Выдвижение и оценка гипотезы
Определение и реализация изменений
Определение и следование политикам
Работа в команде при поиске неисправностей
Работа с документацией и поиск в интернете

Модуль 2. Инструменты поиска неисправностей в ОС Linux

RPM запросы и проверки
SRPM и spec файлы
Hardware Discovery Tools
hwinfo
strace и ltrace
lsof и fuser
ipcs и ipcrm
iostat, mpstat и vmstat
hdparm
ip команды
разрешение имён
ss/netstat и rpcinfo
nmap
Netcat
tcpdump и wireshark

Модуль 3. Диагностика и восстановление ОС Linux

Процедуры восстановления
mount & chroot
Примеры восстановления
Сетевые утилиты для восстановления

Модуль 4. Процесс загрузки ОС Linux

Процесс загрузки ОС Linux
Методы загрузки системы
Система systemd и Service Manager
Загрузка ОС Linux на ПК
GRUB 2
Поиск неисправности при загрузки ОС Linux

Модуль 5. Управление процессами

Модуль 6. Файловая система

Модуль 7. Резервное копирование

Модуль 8. Работа с сетью

Инструменты работы с сетью
Сетевые интерфейсы Linux
Network Manager
Поиск неисправности в сети
Виртуальные итерфейсы/IP Aliases
Network Teaming
Xinetd
TCP Wrappers
Netfilter/iptables

Модуль 9. Оконная система X

Работа с X11
Поиск неисправностей в X11

Модуль 10. Журналирование

rsyslog
syslogd
systemd
безопасное логирование

Модуль 11. Пакетный менеджер RPM

Модуль 12. Система печати

Common Unix Printing System (CUPS)
Поиск неисправностей в CUPS

Модуль 13. Автоматизация и планирование задач

at & cron использование и поиск неисправностей

Модуль 14. Пользователи и группы

Модуль 15. PAM (Pluggable Authentication Modules)

Модуль 16. Квоты файловой системы

Модуль 17. Контроль доступа к файлам

Модуль 18. SELinux

Модуль 19. Kernel модули

Модуль 19. Хранение данных в ОС Linux

Logical Volume Management (LVM)
Создание Logical Volumes
Проблемы с развёртыванием LVM
VG (Volume Group) и PV (Physical Volume)
Программный RAID
Multipathing
SAN Multipathing

Модуль 20. LDAP

Модуль 20. NIS (Network Information service) и NIS+ (YP)

Модуль 20. DNS

Модуль 20. Apache

Модуль 20. FTP

Модуль 20. Squid

Модуль 20. Samba

Модуль 20. Postfix

Модуль 20. IMAP/POP

Модуль 20. MariaDB