某培训机构最新RHCE题库.docx
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某培训机构最新RHCE题库
PhaseA
ForthefirstPhase,Wehaveperformedasimpleinstallationandhave
createdeightproblemsforyoutosolve.Weexpresstheseproblemsin
termsofendstates.Theconditionsbelowwillnotexistonyousystem
atthebegining.YourtaskinPhaseAisfixormodifytheRedHat
EnterpriseLinuxinstallationonyoursystemsuchthattheseconditions
doexist:
.Compulsory1:
（T01）theexaminercanlogintoyoursystemasroot
usingthpassword"A9b7#Eq.*".Thehomedirectorymustbe/root.
（compulsory）
[root@Clever~]#passwd
.Compulsory2:
（T02）ping192.168.0.254issuccessful,andyoursystem
usesstaticnetworkingasdescribedin/root/network（compulsory）
configureyourstationXfollowis:
addressis192.168.0.X（Xisyourstationnumber）
netmaskis255.255.255.0
gatewayis192.168.0.254
nameserveris192.168.0.254
configcorrecthostname（youcanreferto/etc/hosts）
makesuccessfullyresolveto
[root@Clever~]#cat/etc/sysconfig/network-scripts/ifcfg-eth0
#AdvancedMicroDevices[AMD]79c970[PCnet32LANCE]
DEVICE=eth0
BOOTPROTO=static
ONBOOT=yes
BOOTPROTO=static
IPADDR=192.168.0.2
NETMASK=255.255.255.0
GATEWAY=192.168.0.254
[root@Clever~]#cat/etc/sysconfig/network
NETWORKING=yes
NETWORKING_IPV6=no
HOSTNAME=
[root@Clever~]#servicenetworkrestart
正在关闭接口eth0：
[确定]
关闭环回接口：
[确定]
弹出环回接口：
[确定]
弹出界面eth0：
[确定]
[root@station2~]#ifconfig
eth0Linkencap:
EthernetHWaddr08:
00:
27:
85:
03:
7A
inetaddr:
192.168.0.2Bcast:
192.168.0.255Mask:
255.255.255.0
inet6addr:
fe80:
:
a00:
27ff:
fe85:
37a/64Scope:
Link
UPBROADCASTRUNNINGMULTICASTMTU:
1500Metric:
1
RXpackets:
96019errors:
2dropped:
0overruns:
0frame:
0
TXpackets:
40706errors:
0dropped:
0overruns:
0carrier:
0
collisions:
0txqueuelen:
1000
RXbytes:
52348895（49.9MiB）TXbytes:
10048326（9.5MiB）
Interrupt:
11Baseaddress:
0xc020
loLinkencap:
LocalLoopback
inetaddr:
127.0.0.1Mask:
255.0.0.0
inet6addr:
:
:
1/128Scope:
Host
UPLOOPBACKRUNNINGMTU:
16436Metric:
1
RXpackets:
1248errors:
0dropped:
0overruns:
0frame:
0
TXpackets:
1248errors:
0dropped:
0overruns:
0carrier:
0
collisions:
0txqueuelen:
0
RXbytes:
158030（154.3KiB）TXbytes:
158030（154.3KiB）
[root@station2~]#ping192.168.0.254
.Compulsory3:
（T03）digsuccessfulyresolvesthat
hostnameusingDNS（compulsory）
[root@Clever~]#cat/etc/resolv.conf
;generatedby/sbin/dhclient-script
nameserver192.168.0.254
search
[root@Clever~]#dig
[root@Clever~]#ping
.Compulsory4:
（T09）yoursystemhasanew500MBphysicalpartition
mountedunder/mnt/backupwitha500MBext3filesystem.Note:
because
partitionsizeareseldomexactlywhatisspecifiedwhentheyare
created.anythingwithintherangeof450to550MBisacceptable
（compulsory）
[root@Clever~]#fdisk/dev/sda
[root@Clever~]#partprobe
[root@Clever~]#mke2fs–j/dev/sda9
[root@Clever~]#mkdir/mnt/backup
[root@Clever~]#cat/etc/fstab
LABEL=//ext3defaults11
LABEL=/boot/bootext3defaults12
tmpfs/dev/shmtmpfsdefaults00
devpts/dev/ptsdevptsgid=5,mode=62000
sysfs/syssysfsdefaults00
proc/procprocdefaults00
LABEL=SWAP-hda2swapswapdefaults00
/dev/sda9/mnt/backupext3defaults00
[root@Clever~]#mount-a
[root@Clever~]#df-h
Payattention,youmustsuccessfullyfixedT02andT03cancompleteyour
RHCEexamine.
ifyousuccessfulyallofthempleasevisitingthewebsitetonextfor
yourRHCEexame.
yoursystemisinstalledthedistributionisavailablevia:
NFS:
/var/ftp/pub/Server
YUM
RHCT（Local）Requirements
.InstallthedialogRPMpackage.
[root@Clever~]#vi/etc/yum.repo.d/base.repo
[base]
name=yumrepo
baseurl=
gpgcheck=0
enabled=1
[root@Clever~]#yumcleanall
[root@Clever~]#yumlist
[root@Clever~]#yum–yinstalldialog
.UsetheremainingspacetocreateaRAID1seton/dev/md1and
mountedthispatitionon/mnt/common
[root@Clever~]#fdisk/dev/sda
[root@Clever~]#partprobe
[root@Clever~]#mdadm--create/dev/md1--level=1/dev/sda{10,11}
[root@Clever~]#mke2fs–j/dev/md1
[root@Clever~]#mkdir/mnt/common
[root@Clever~]#cat/etc/fstab
LABEL=//ext3defaults11
LABEL=/boot/bootext3defaults12
tmpfs/dev/shmtmpfsdefaults00
devpts/dev/ptsdevptsgid=5,mode=62000
sysfs/syssysfsdefaults00
proc/procprocdefaults00
LABEL=SWAP-hda2swapswapdefaults00
/dev/sda9/mnt/backupext3defaults00
/dev/md1/mnt/commonext3defaults00
[root@Clever~]#mount-a
[root@Clever~]#df-h
.SELinuxmustberunningintheEnforcingmode
[root@Clever~]#setenforce1
[root@Clever~]#getenforce
.neousertriedby:
ddif=/dev/zeroof=/home/neo/somefilebs=1024count=100
filecreatedsuccessfully.Againneotriedtocreatefileand
having170Kusingfollowingcommand:
ddif=/dev/zeroof=/home/neo/somefilebs=1024count=170
butheisunabletocreatethefile.maketheusercancreate
thefilelessthen170K.
[root@Clever~]#useraddneo
[root@Clever~]#vi/etc/fstab
LABEL=/home/homeext3defaults,usrquota,grpquota11
[root@Clever~]#mount-a
[root@Clever~]#df-h
[root@Clever~]#mount|grephome
[root@Clever~]#quotacheck–avug
[root@Clever~]#quotaon–auvg
[root@Clever~]#edquota–uneo
Diskquotasforuserneo
Filesystemblockssofthardinodessofthard
/dev/hda380100170000
[root@Clever~]#repquota–a
?
.Someusershomedirectoryissharedfromyoursystem,using
showmount-elocalhostcommand,thesharedirectoryisnotshow,
makeaccesstheshareusershomedirectory.
[root@Clever~]#yum-yinstallnfs*
[root@Clever~]#cat/etc/exports
/home*（ro,async）
[root@Clever~]#servicenfsstart
[root@Clever~]#serviceportmapstart
[root@Clever~]#showmount-elocalhost
Exportlistforlocalhost:
/home*
.Inyoursystemhasalogicalvolumeiscreatednamedascommonunder
vol0volumegroupandismounton/common,Theinitialsizeofthat
volumeis100MB,makesuccessfullythatthesizeoflogicalvolume190MB
withoutlosinganydata.Thesizelogicalvolume160MB-200MBwillbeacceptable.
[root@VirtualBox~]#fdisk/dev/hdb
[root@VirtualBox~]#partprobe
[root@VirtualBox~]#vgextendvol0/dev/hdb2
[root@VirtualBox~]#lvresize-L+80M/dev/vol0/lv0
[root@VirtualBox~]#resize2fs/dev/vol0/lv0
[root@Clever~]#cat/etc/fstab
/dev/sda9/mnt/backupext3defaults00
/dev/md1/mnt/commonext3defaults00
/dev/vol0/lv0/commonext3defaults00
[root@VirtualBox~]#mount-a
.Inyoursystemhasanotherlogicalvolumeiscreatenameasshrinkunder
vol0volumegroupandismount/shrink,Theinitialsizeofthatvalumeis
320MBshrinksuccessfullythatthesizeoflogicalvolume200MBwithout
losinganydata,payattentionthesizelogicalvolume192MB-240MBwillbe
acceptable.
[root@VirtualBox~]#umount/shrink
[root@VirtualBox~]#e2fsck-f/dev/vol0/lv0
[root@VirtualBox~]#resize2fs/dev/vol0/lv080M
[root@VirtualBox~]#mount/dev/vol0/lv0/common
[root@VirtualBox~]#lvresize-l-5/dev/vol0/lv0
降低LV容量，以PE为单位
.Createaraid0device/dev/md0bycreatingequaltwodisksfromavailable
freespaceonyoursystemandmountiton/raid0,whenyoursystemreboot
thismounteddirectoryshouldautomaticallymounton/raid0.
[root@Clever~]#fdisk/dev/sda
[root@Clever~]#partprobe
[root@Clever~]#mdadm--create/dev/md0--level=0/dev/sda{12,13}
[root@Clever~]#mke2fs–j/dev/md0
[root@Clever~]#mkdir/raid0
[root@Clever~]#cat/etc/fstab
LABEL=//ext3defaults11
LABEL=/boot/bootext3defaults12
tmpfs/dev/shmtmpfsdefaults00
devpts/dev/ptsdevptsgid=5,mode=62000
sysfs/syssysfsdefaults00
proc/procprocdefaults00
LABEL=SWAP-hda2swapswapdefaults00
/dev/sda9/mnt/backupext3defaults00
/dev/md1/mnt/commonext3defaults00
/dev/md0/raid0ext3defaults00
[root@Clever~]#mount-a
[root@Clever~]#df-h
.Makeaswappartitionhave512MB,makeautomaticallyuseableatsystemboottime.
[root@Clever~]#fdisk/dev/sda
Command（mforhelp）:
t<==修改系統ID
Partitionnumber（1-7）:
7<==從上結果看到的，七號partition
Hexcode（typeLtolistcodes）:
82<==改成swap的ID
[root@Clever~]#partprobe
[root@Clever~]#mkswap/dev/sda13
[root@Clever~]#swapon/dev/sda13
[root@Clever~]#free
[root@Clever~]#swapon-s
.Createthefollowingusers,groups,andgroupmemberships:
--Agroupnamedadmin
--Ausermarywhobelongstoadminasasecondarygroup
--Auseralicewhoalsobelongstoadminasasecondarygroup
--Auserbobbywhodosenothaveaccesstoaninteractiveshell
onthesystem,andwhoisnotamemberofadmin
--mary,alice,andbobbyshouldallhavethepasswdof"password"
[root@VirtualBox~]#groupaddadmin
[root@VirtualBox~]#useradd-Gadminmary
[root@VirtualBox~]#useradd-Gadminalice
[root@VirtualBox~]#useradd-s/sbin/nologinbobby
[root@VirtualBox~]#forainmaryalicebobby;doecho"password"|passwd--stdin$a;done
.Createacolloborativedirectory/common/adminwiththefollowing
characteristics:
--Groupownershipof/common/adminisadmin
--Thedirectoryshouldbereadable,writable,andaccessiableto
membersofadmin,butnottoanyotherusers.（Itisunderstood
thatroothasaccesstoallfilesanddirectoriesonthesystem）
--Filescreatedin/common/adminautomaticallyhavegroupownership
settotheadmingroup
[root@VirtualBox~]#chownmary:
admin/home/admin
[root@VirtualBox~]#chmod2770/common/adm
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