Opsgility Official Training

Red Hat System Administration Iii (Rh254)

Students in a classroom-min

Course Description

Red Hat System Administration III (RH254), related to Red Hat Enterprise Linux 7, 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. 

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 using Bash shell scripting to help automate, configure, and troubleshoot the system. 

Through lectures and hands-on labs, RHCSA-certified professionals will be exposed to all competencies covered by the Red Hat Certified Engineer (RHCE) exam. 

About this course

What You'll Learn

  • Network port security and link aggregation 
  • iSCSI initiator and target configuration 
  • DNS troubleshooting and caching name server 
  • Provisioning NFS and SMB file servers 
  • Apache HTTPD web server management 
  • MariaDB SQL database configuration 
  • Postfix SMTP nullclient for servers 
  • Bash scripting for automation 

Who Needs to Attend

  • Experienced Linux administrators who have earned RHCSA certification or have equivalent skills and wish 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 


  • 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 
  • 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. 

Ready to get started?