Red Hat System Administration III (RH255), 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.
Note: 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).
1. Control Services and Daemons
Review how to manage services and the boot-up process using systemctl.
2. Manage IPv6 Networking
Configure and troubleshoot basic IPv6 networking on Red Hat Enterprise Linux systems.
3. Configure Link Aggregation and Bridging
Configure and troubleshoot advanced network interface functionality, including bonding, teaming, and local software bridges.
4. Control Network Port Security
Permit and reject access to network services using advanced SELinux and firewalld filtering techniques.
5. Manage DNS for Servers
Set and verify correct DNS records for systems and configure secure DNS caching.
6. Configure Email Delivery
Relay all email sent by the system to an SMTP gateway for central delivery.
7. Provide Block-Based Storage
Provide and use networked iSCSI block devices as remote disks.
8. Provide File-Based Storage
Provide NFS exports and SMB file shares to specific systems and users.
9. Configure MariaDB Databases
Provide a MariaDB SQL database for use by programs and database administrators.
10. Provide Apache HTTPD Web Service
Configure Apache HTTPD to provide Transport Layer Security (TLS)-enabled websites and virtual hosts.
11. Write Bash Scripts
Write simple shell scripts using Bash.
12. Bash Conditionals and Control Structures
Use Bash conditionals and other control structures to write more sophisticated shell commands and scripts.
13. Configure the Shell Environment
Customize Bash startup and use environment variables, Bash aliases, and Bash functions.
14. Linux Containers Preview
Preview the capabilities of Linux containers, Docker, and other related technologies in Red Hat Enterprise Linux 7.
15. Comprehensive Review
Practice and demonstrate knowledge and skills learned in Red Hat System Administration III.