rhcsa guide

RHCSA
Red Hat Certified System Administrator Exam Objectives

Candidates should be able to do the following:
Boot, reboot, and shutdown the system normally
shutdown
halt
poweroff
reboot
init 0|6
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
ping
arping
traceroute | tracepath
route
ifconfig
netstat
ethtool
Diagnose and correct hostname resolution problems
host
nslookup
dig
Diagnose and address permissions problems and SELinux policy violations
Diagnose and correct non-hardware disk storage problems
fsck | e2fsck | xfs_check | jfs_fsck | reiserfsck
badblocks
tune2fs
debugfs
Adding new partitions, logical volumes, filesystems, and swap areas to a system non-destructively
fdisk | cfdisk
parted
swapon | swapoff
Manually open, mount, unmount, and close LUKS-encrypted filesystems
Extend existing unencrypted ext4-formatted logical volumes
Login or switch user to the root account
su
sudo
Use ssh and VNC to access remote systems
ssh
vncviewer | xtightvncviewer
Locate and read on-line documentation using man, info, and files in /usr/share/doc
man
info
apropos
whatis
Locate and analyze system log files
find
locate
whereis
Understand how to use grep and regular expressions to analyze text output
grep | egrep | fgrep
awk
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
vi | vim | gvim
gedit
Manage system resources: identify CPU/memory intensive processes, adjust process priority with renice, kill processes
top
ps
pgrep | pkill
nice | renice
kill | killall
Manage files and directories: create/delete/copy/move; create hard and soft links
cp
mv
rm
mkdir
rmdir
ln
Use tar, gzip, and bzip2 to archive and compress files
tar
gzip | gunzip | zcat
bzip2 | bunzip2 | bzcat
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
Mount and unmount CIFS and NFS network filesystems, manually or by configuring autofs
Manage network devices: understand basic IP networking/routing, configure IP addresses/default route statically or dynamically
Manage name resolution: set local hostname, configure to use existing DNS server, configure /etc/hosts
/etc/resolv.conf
/etc/hosts
Manage network services: check status, start, stop, configure to start automatically at boot
service
ntsysv
chkconfig
system-config-services
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)
setfacl
getfacl
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
Deploy file sharing services with HTTP/FTP