Red Hat Certified System Administrator (RHCSA) EX200 Study Guide

12/ 17/ 12
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# m ount -t cifs -o guest //192.168.1.7 0/Share /hom e/win_m ount
Configure systems to mount ext4, LUKS-encrypted, and network file systems automatically.
/etc/fstab entries
/dev/mapper/LUKSext4defaults12
/dev/sda1/homeext4defaults12
//192.168.1.70/Share/home/win_mountcifsguest,_netdev00
192.168.1.67:/home/home/nfs_localnfsdefaults00
Extend existing unencrypted ext4-formatted logical volumes.
# v gextend VG01 /dev /sdb1 //adds partition to volume group VG01
# lv extend -L +5g /dev /VG01/LV011 //adds 5gigs to logical volume LV01
# resize2fs -p /dev /VG01/LV01 //resizes the filesy stem
Create and configure set-GID directories for collaboration.
Create a directory to be shared by a group
# m kdir /hom e/topsecret
# chgrp -R security /hom e/topsecret //changes group owner of the folder to security
# chm od 27 55 /hom e/topsecret // Adds the GUID bit to the directory
# chm od g+s /hom e/topsecret //Adds the GUID bit to the directory
Create and manage Access Control Lists (ACLs).
# setfacl -m u:boss:rwx /hom e/bonus_pay outs.txt //add the user boss to the file
# setfacl -x u:boss /hom e/bonus_pay outs.txt //remove the user boss from the file
# setfacl -b /hom e/bouns_pay outs.txt //removes the acl settings from the file
# getfacl /hom e/bonus_pay outs.txt // lists the acl settings for the directory
Diagnose and correct file permission problems.
Deploy, configure, and maintain systems
Configure networking and hostname resolution statically or dy namically .
DHCP Configuration
nano/etc/sysconfig/network-scripts/ifcfg-eth0
DEVICE="eth0"
BOOTPROTO="dhcp"
HWADDR="00:16:D4:39:5B:6F"
NM_CONTROLLED="yes"
ONBOOT="yes"