There are many ways to study for and achieve the RHCSA 200 certification. Yeah you can go to youtube and look it up yourself and that’s fine. You might want to take out loans to take a course with a professional and that’s fine.  But this is my way.   I am not an expert just an amateur that cannot afford to pay thousands of dollars for a boot camp rush class .  I have just started updating my blog with a RED HAT section so subscribe because I will post updates regularly. I live in Dallas and I plan to start a RHCSA study group.  Mostly to make studying fun and build new friendships.  If you are interested in that or want to make new friends contact me.

I am going to lay out the objectives in the order RED HAT posted them on their website except I am going to start with how to install the operating system first. I am going to be using CENTOS 7 for the examples.   Centos 7 is pretty much RHEL 7 but it does not have RED HAT support.  I will go over things in order from top to bottom of list so until i cover that particular topic it won’t have a link to that post.  That makes sense right ? 

I know that different Linux certifications exist.   I have looked into the other types of certifications but  what it boils down to is RED HAT  is the most used in North America and a recruiter would rather hire a RHCSA certified person vs  Linux + .  One of those reasons why is because RH actually gives you a real world test.  Linux + you just have to answer multiple-choice questions.  That shit is easy in my opinion.

I will focus on mostly RH/CENTOS questions but will help anyone with questions about other flavors of Linux.  In Linux, there are many ways to skin a cat so just because I done something one way does not mean it cannot be done differently.

 

Installing CENTOS 7

  • USB Install
  • Virtual Install
  • Network install
  • Kickstart install will be covered in another section.

 

Understand and use essential tools

  • Access a shell prompt and issue commands with correct syntax
  • Use input-output redirection (>, >>, |, 2>, etc.)
  • Use grep and regular expressions to analyze text
  • Access remote systems using ssh
  • Log in and switch users in multiuser targets
  • Archive, compress, unpack, and uncompress files using tar, star, gzip, and bzip2
  • Create and edit text files
  • Create, delete, copy, and move files and directories
  • Create hard and soft links
  • List, set, and change standard ugo/rwx permissions
  • Locate, read, and use system documentation including man, info, and files in /usr/share/doc

Note: Red Hat may use applications during the exam that are not included in Red Hat Enterprise Linux for the purpose of evaluating candidate’s abilities to meet this objective.

Operate running systems

  • Boot, reboot, and shut down a system normally
  • Boot systems into different targets manually
  • Interrupt the boot process in order to gain access to a system
  • Identify CPU/memory intensive processes, adjust process priority with renice, and kill processes
  • Locate and interpret system log files and journals
  • Access a virtual machine’s console
  • Start and stop virtual machines
  • Start, stop, and check the status of network services
  • Securely transfer files between systems

Configure local storage

  • List, create, delete partitions on MBR and GPT disks
  • Create and remove physical volumes, assign physical volumes to volume groups, and create and delete logical volumes
  • Configure systems to mount file systems at boot by Universally Unique ID (UUID) or label
  • Add new partitions and logical volumes, and swap to a system non-destructively

Create and configure file systems

  • Create, mount, unmount, and use vfat, ext4, and xfs file systems
  • Mount and unmount CIFS and NFS network file systems
  • Extend existing logical volumes
  • Create and configure set-GID directories for collaboration
  • Create and manage Access Control Lists (ACLs)
  • Diagnose and correct file permission problems

Deploy, configure, and maintain systems

  • Configure networking and hostname resolution statically or dynamically
  • Schedule tasks using at and cron
  • Start and stop services and configure services to start automatically at boot
  • Configure systems to boot into a specific target automatically
  • Install Red Hat Enterprise Linux automatically using Kickstart
  • Configure a physical machine to host virtual guests
  • Install Red Hat Enterprise Linux systems as virtual guests
  • Configure systems to launch virtual machines at boot
  • Configure network services to start automatically at boot
  • Configure a system to use time services
  • Install and update software packages from Red Hat Network, a remote repository, or from the local file system
  • Update the kernel package appropriately to ensure a bootable system
  • Modify the system bootloader

Manage users and groups

  • Create, delete, and modify local user accounts
  • Change passwords and adjust password aging for local user accounts
  • Create, delete, and modify local groups and group memberships
  • Configure a system to use an existing authentication service for user and group information

Manage security

  • Configure firewall settings using firewall-config, firewall-cmd, or iptables
  • Configure key-based authentication for SSH
  • Set enforcing and permissive modes for SELinux
  • List and identify SELinux file and process context
  • Restore default file contexts
  • Use boolean settings to modify system SELinux settings
  • Diagnose and address routine SELinux policy violations