RHCSA and RHCE 6 Certifications

This article is an introduction to the series of articles that will be presented on this site covering the Red Hat Certified System Administration (RHCSA EX200) and Red Hat Certified Engineer ( RHCE EX300) certification exams. You need to keep in mind the following notes when reading the associated articles.

Scope

I am trying to write a series of articles that cover the exam objectives that make up the RHCSA and RHCE certification exams. I am not trying to teach Linux administration from first principles.

Assumptions

  • You’ve read the information on the Certifications section of the Red Hat website, specifically the RHCSA EX200 Objectives and RHCE EX300 Objctives sections.
  • You have previous Linux experience. This does not necessarily have to be with Red Hat distributions, but it will help.
  • You have access to RHEL 6, or one of its clones. I will be doing most of the work on Oracle Linux 6.x, which is a free binary clone or RHEL 6.x. You can get hold of this from http://edelivery.oracle.com/linux.

Resources

While you are working through the exam objectives, your first stop for information should be the Red Hat Documentation, available for free online. This will not be available during the exams, so get used to using the man and info pages also.

The man pages provide very detailed explanations of specific commands, including all available flags and syntax variations. You should get used to reading them because they will probably be the major source of information during exams. Typically you will just specify the command of interest as a parameter, but some sections with suggest checking the information for a specific section of the documentation. In this case it can be specified using an integer before the command parameter.

# man vmstat
# man 8 vmstat

The info command is an alternative to the man command. Some info entries are similar to the man entries, but others are much more in the style of the HTML documentation, with better examples. If you are struggling to understand the man pages for a particular subject, you should probably try the info entry for the same command.

# info vmstat

You also have the information in the “/usr/share/doc” directory, but its usefulness is very much dependent on the feature you are looking for. Some entries are almost devoid of information. Some give detailed step-by-step usage notes. It is usually the last place I look for information, but worth checking out if you are stuck.

If you need more detail specifically about the exams, I suggest you get hold of a copy of one of the certification guides, such as the one by Michael Jang.

RHCSA Objectives

The following objectives are taken from the RHCSA EX200 Objectives page. Each element links to page on this website that contains the information to fulfil that objective.

Understand and use essential tools:

Operate running systems:

Configure local storage:

Create and configure file systems:

Deploy, configure, and maintain systems:

Manage users and groups:

Manage security:

RHCE Objectives

System configuration and management:

  • Route IP traffic and create static routes.
  • Use iptables to implement packet filtering and configure network address translation (NAT).
  • Use /proc/sys and sysctl to modify and set kernel runtime parameters.
  • Configure a system to authenticate using Kerberos.
  • Build a simple RPM that packages a single file.
  • Configure a system as an iSCSI initiator that persistently mounts an iSCSI target.
  • Produce and deliver reports on system utilization (processor, memory, disk, and network).
  • Use shell scripting to automate system maintenance tasks.
  • Configure a system to log to a remote system.
  • Configure a system to accept logging from a remote system.

Network services:

Network services are an important subset of the exam objectives. RHCE candidates should be capable of meeting the following objectives for each of the network services listed below:

  • Install the packages needed to provide the service.
  • Configure SELinux to support the service.
  • Configure the service to start when the system is booted.
  • Configure the service for basic operation.
  • Configure host-based and user-based security for the service.

HTTP/HTTPS:

  • Configure a virtual host.
  • Configure private directories.
  • Deploy a basic CGI application.
  • Configure group-managed content.

DNS:

  • Configure a caching-only name server.
  • Configure a caching-only name server to forward DNS queries.
  • Note: Candidates are not expected to configure master or slave name servers.

FTP:

  • Configure anonymous-only download.

NFS:

  • Provide network shares to specific clients.
  • Provide network shares suitable for group collaboration.

SMB:

  • Provide network shares to specific clients.
  • Provide network shares suitable for group collaboration.

SMTP:

  • Configure a mail transfer agent (MTA) to accept inbound email from other systems.
  • Configure an MTA to forward (relay) email through a smart host.

SSH:

  • Configure key-based authentication.
  • Configure additional options described in documentation.

NTP:

  • Synchronize time using other NTP peers.

For more information see:

Hope this helps. Regards

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