Red Hat Certified System Administrator
The Red Hat Certified System Administrator exam is a performance-based evaluation of Red Hat Enterprise Linux system administration skills and knowledge. You will perform a number of routine system administration tasks and be evaluated on whether you have met specific objective criteria. Performance-based testing means that you must perform tasks similar to what you would perform on the job.
Content
- Boot, reboot, and shut down the system normally
- Diagnose and correct problems at boot
- Boot systems into different runlevels for troubleshooting and system maintenance
- Use single-user mode to gain access to a system for which the root password is not known
- Diagnose and correct misconfigured networking settings
- Diagnose and correct hostname resolution problems
- Diagnose and address permissions problems and SELinux policy violations
- Diagnose and correct non-hardware disk storage problems
- Adding new partitions, logical volumes, filesystems, and swap areas to a system non-destructively
- Manually open, mount, unmount, and close LUKS-encrypted filesystems
- Extend existing unencrypted ext4-formatted logical volumes
- Login or switch user to the root account
- Use ssh and VNC to access remote systems
- Locate and read on-line documentation using man, info, and files in /usr/share/doc
- Locate and analyze system log files
- Understand how to use grep and regular expressions to analyze text output
- Access a bash shell prompt and issue commands with correct syntax; use pipelines and I/O redirection
- Use text editors such as gedit and vim to create and edit text files
- Manage system resources: Identify CPU/memory intensive processes, adjust process priority with renice, kill processes
- Manage files and directories: Create/delete/copy/move; create hard and soft links
- Use tar, gzip, and bzip2 to archive and compress files
- Install Red Hat Enterprise Linux manually with the graphical installer from network installation media
- Install Red Hat Enterprise Linux automatically using Kickstart
- Configure a physical machine as a RHEL-based virtualization host
- Manage virtual machines: Install/start/stop/configure to start at boot/access a VM’s graphical console
- Manage disk partitions: Understand MBR-style partitions
(primary,extended,logical); list/create/delete partitions - Manage logical volumes: Create/remove physical volumes, assign PVs to volume groups, create/delete logical volumes
- Create and configure LUKS-encrypted partitions and logical volumes to prompt for password and mount decrypted filesystem at boot
- Canage ext4 filesystems: Create, label, mount, mount automatically at boot (by UUID or label), unmount
- Manage network devices: Understand basic IP networking/routing, configure IP addresses/default route statically or dynamically
- Manage name resolution: Set local hostname, configure /etc/hosts, configure to use existing DNS server
- Manage network services: Check status, start, stop, configure to start automatically at boot
- Configure the scheduling of tasks using cron and at
- Manage local user and group accounts: Create, delete, change passwords, adjust password aging, adjust group memberships
- Use network user and group accounts stored on an existing LDAP directory service
- Manage standard permissions: List, interpret, change ugo/rwx
- Use sgid directories for collaboration
- Set and manage Access Control Lists (ACLs)
- Manage SELinux security: Set enforcing/permissive modes, list file and process context, restore default file context, use “booleans” to adjust policy
- Manage default firewall settings with basic tools
- Install and update software packages from RHN or remote repository, or from the local filesystem
- Update the kernel package appropriately to ensure a bootable system
- Modify the system bootloader
- Configure the system to synchronize system time using remote NTP servers
- Deploy a VNC server that allows multiple desktops to be shared
30. Mount and unmount CIFS and NFS network filesystems, manually or by configuring autofs