Red Hat System Administration III with RHCSA and RHCE Exams (RH255)

Level: Intermediate

This Red Hat System Administration III with RHCE Exam (RH255) is related to Red Hat Enterprise Linux (RHEL) 7 and is designed for experienced Linux system administrators who hold a Red Hat Certified System Administrator (RHCSA) certification or equivalent skills and who want to broaden their ability to administer Linux systems at an enterprise level.

This RH255 course is focused on deploying and managing network servers running caching Domain Name Service (DNS), MariaDB, Apache HTTPD, Postfix SMTP nullclients. You will also examine network file sharing with Network File System (NFS) and Server Message Block (SMB), iSCSI initiators and targets, advanced networking and firewall 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 certification will be exposed to all competencies covered by the Red Hat Certified Engineer (RHCE) exam. This version of the course includes both the RHCSA (EX200) and RHCE (EX300) exams and at completion of the course students should be prepared to take the exams.

This course does not cover all RHCSA tasks. Students who need a review of RHCSA skills are encouraged to attend RHCSA Rapid Track Course (RH199).

Key Features of this RH255 Training:

  • Official Red Hat training curriculum
  • Extensive hands-on labs for enhancing practical skills
  • Bring this course to your facility

You Will Learn How To:

  • Managing and troubleshooting system services during the boot process
  • Network configuration and basic troubleshooting
  • Managing local storage, creating and using file systems
  • Firewall management with firewall
  • Automating installation of Red Hat Enterprise Linux® using kickstart
  • Manage SELinux settings
  • Using NFS and Samba shared filesystems
  • Network port security and link aggregation
  • iSCSI initiator and target configuration
  • Domain Name System (DNS) troubleshooting and caching name server
  • Providing Network File System (NFS) and Server Message Block (SMB) file servers
  • Apache HTTPD web server management
  • MariaDB SQL datbase configuration
  • Postfix Simple Mail Transfer Protocol (SMTP) nullclient for servers
  • Bash scripting for automation

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RH255 Course Information

  • Requirements

  • Exam Information

    • Cost of the exam is included in the tuition fee price. Students must take the exam on the 5th day of class — Red Hat does not allow reschedules or issue vouchers for attendees who want to wait to take the exam at a later date.

    RH255 Course Outline

    Local and remote logins

    • Review methods for accessing the system and engaging Red Hat Support.

    File system navigation

    • Copy, move, create, delete, link, and organise files while working from the Bash shell prompt.

    Users and groups

    • Manage Linux users and groups and administer local password policies.

    File permissions

    • Control access to files and directories using permissions and access control lists (ACLs).

    SELinux permissions

    • Manage the SELinux behaviour of a system to keep it secure in case of a network service compromise.

    Process management

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

    Updating software packages

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

    Creating and mounting file systems

    • Create and manage disks, partitions, and filesystems from the command line.

    Service management and boot troubleshooting

    • Control and monitor system daemons and troubleshoot the Red Hat Enterprise Linux boot process.

    Network configuration

    • Configure basic IPv4 networking on Red Hat Enterprise Linux systems.

    System logging and ntp

    • Locate and accurately interpret relevant system log files for troubleshooting purposes.

    Logical volume management

    • Create and manage logical volumes from the command line.

    Scheduled processes

    • Schedule tasks to automatically execute in the future.

    Mounting network file systems

    • Use autofs and the command line to mount and unmount network storage with NFS and SMB.

    Firewall configuration

    • Configure a basic firewall.

    Virtualisation and kickstart

    • Automate the installation of Red Hat Enterprise Linux on virtual machines with Kernel-based Virtual Machine (KVM) and libvirt.

    Managing IPv6 networking

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

    Configuring link aggregation and bridging

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

    Controlling network port security

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

    Managing DNS for Servers

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

    Configuring E-mail Delivery

    • Relay all e-mail sent by the system to a SMTP gateway for central delivery.

    Providing block-based storage

    • Provide and use networked iSCSI block devices as remote disks.

    Providing file-based storage

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

    Configuring MariaDB databases

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

    Providing Apache HTTPD Web Service

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

    Writing 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.

    Configuring the shell environment

    • Customise Bash startup and use environment variables, Bash aliases, and Bash functions.

    Recommended next exam or course:

    • Red Hat Certified Engineer Exam (EX300)
    • Red Hat Enterprise Virtualisation (RH318)
    • Red Hat Enterprise Deployment and Systems Management (RH401)
    • Red Hat Enterprise Clustering and Storage Management (RH436)
    • Red Hat Enterprise System Monitoring and Performance Tuning (RH442)
    • Red Hat Server Hardening (RH413)
    • Red Hat OpenStack Administration (CL210)
    • Red Hat OpenShift Administration (CL280)

    RH255 Training FAQs

    • How do I take the EX200 and EX300 exams to achieve Red Hat Certified Engineer (RHCE) certification?

      Yes! We know your busy work schedule may prevent you from getting to one of our classrooms which is why we offer convenient online training to meet your needs wherever you want. This course is available virtually as Private Team Training.

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