This book covers four major learning objectives: 1) a self-study guide for Red Hat exams RHCSA (EX200) and RHCE (EX300) for those who intend to take the two exams and pass them, 2) an in-class training guide for college students, 3) an on-the-job reference for administrators, programmers, and DBAs, and 4) an easy-to-understand guide for novice and non-RHEL administrators who plan to learn RHEL from scratch.
This book is divided into two sections—RHCSA and RHCE—based on exam and learning objectives. The RHCSA section covers tasks that are intended for a single system, while the RHCE section covers those that require two or more networked systems. The book has twenty-five chapters altogether that are organized logically, keeping in mind the four learning objectives mentioned above.
The RHCSA Section (chapters 1 to 13) covers the topics that will help the reader learn system administration tasks and prepare for the new RHCSA exam. Material presented includes local RHEL7 installation; general Linux concepts and basic commands; compression and archiving; text editor and online help; file and directory manipulation and security; processes, task scheduling, and bash shell features; package administration and yum repository; host virtualization, and network and automated installations; system boot, kernel management, systemd, and local logging; user and group administration; storage partitioning and file system build; AutoFS, swap, and ACLs; basic firewall and SELinux; network interface configuration and NTP/LDAP clients; and SSH and TCP Wrappers.
The RHCE Section (chapters 14 to 25) covers the topics that will help the reader learn network administration tasks and prepare for the new RHCE exam. Material presented includes automation with shell scripting; network interface bonding and teaming; IPv6 and routing setups; remote time synchronization, firewalld, and Kerberos authentication; kernel tuning, resource utilization reporting, and network logging; block storage sharing with iSCSI; file storage sharing with NFS and Samba; web servers and virtual hosting; mail transfer and DNS; and MariaDB configuration and query.
Each chapter in the book highlights the major topics and relevant exam objectives covered in that chapter and ends with a summary followed by review questions/answers and do-it-yourself challenge labs. Throughout the book, figures, tables, and screen shots have been furnished to support explanation. This book includes two sample exams for RHCSA and two for RHCE, and are expected to be done using the knowledge and skills gained from reading the material and practicing the exercises and labs.