RHCE 無料問題集「RedHat Red Hat Certified Engineer - RHCE」
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Create a logical volume
Create a new logical volume as required:
Name the logical volume as database, belongs to datastore of the volume group, size is 50 PE.
Expansion size of each volume in volume group datastore is 16MB.
Use ext3 to format this new logical volume, this logical volume should automatically mount to /mnt/database
Create a logical volume
Create a new logical volume as required:
Name the logical volume as database, belongs to datastore of the volume group, size is 50 PE.
Expansion size of each volume in volume group datastore is 16MB.
Use ext3 to format this new logical volume, this logical volume should automatically mount to /mnt/database
正解：
fdisk-cu/dev/vda//Createa1Gpartitionmodifiedwhenneededpartx-a/dev/vdapvcreate/dev/vdaxvgcreatedatastore/dev/vdax-s16Mlvcreate-l50-ndatabasedatastoremkfs.ext3/dev/datastore/databasemkdir/mnt/databasemount/dev/datastore/database/mnt/database/df-Thvi/etc/fstab/dev/datastore/database/mnt/database/ext3defaults00mount-aRestartandcheckallthequestionsrequirements.
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Create a 2G swap partition which take effect automatically at boot-start, and it should not affect the original swap partition.
Create a 2G swap partition which take effect automatically at boot-start, and it should not affect the original swap partition.
正解：
#fdisk/dev/sdap(checkPartitiontable)n(createnewpartition:pressetocreateextendedpartitionpressptocreatethemainpartitionandtheextendedpartitionisfurtherdividedintologicalpartitions)Enter+2Gt8I82Wpartx-a/dev/sdapartprobemkswap/dev/sda8CopyUUIDswapon-avim/etc/fstabUUID=XXXXXswapswapdefaults00(swapon-s)
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Create a volume group, and set 16M as a extends. And divided a volume group containing 50 extends on volume group lv, make it as ext4 file system, and mounted automatically under /mnt/data.
Create a volume group, and set 16M as a extends. And divided a volume group containing 50 extends on volume group lv, make it as ext4 file system, and mounted automatically under /mnt/data.
正解：
#pvcreate/dev/sda7/dev/sda8
#vgcreate-s16Mvg1/dev/sda7/dev/sda8
#lvcreate-l50-nlvm02
#mkfs.ext4/dev/vg1/lvm02
#blkid/dev/vg1/lv1
#vim/etc/fstab
#mkdir-p/mnt/dataUUID=xxxxxxxx/mnt/dataext4defaults00
#vim/etc/fstab
#mount-a
#mount(Verify)
#vgcreate-s16Mvg1/dev/sda7/dev/sda8
#lvcreate-l50-nlvm02
#mkfs.ext4/dev/vg1/lvm02
#blkid/dev/vg1/lv1
#vim/etc/fstab
#mkdir-p/mnt/dataUUID=xxxxxxxx/mnt/dataext4defaults00
#vim/etc/fstab
#mount-a
#mount(Verify)
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Notes:
NFS : NFS instructor.example.com:/var/ftp/pub/rhel6/dvd
YUM : http://instructor.example.com/pub/rhel6/dvd
ldap : http : //instructor.example.com/pub/EXAMPLE-CA-CERT
Install dialog package.
Notes:
NFS : NFS instructor.example.com:/var/ftp/pub/rhel6/dvd
YUM : http://instructor.example.com/pub/rhel6/dvd
ldap : http : //instructor.example.com/pub/EXAMPLE-CA-CERT
Install dialog package.
正解：
yum install dialog
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Create User Account.
Create the following user, group and group membership:
Adminuser group
User natasha, using adminuser as a sub group
User Harry, also using adminuser as a sub group
User sarah, can not access the SHELL which is interactive in the system, and is not a member of adminuser, natasha , harry , sarah password is redhat.
Create User Account.
Create the following user, group and group membership:
Adminuser group
User natasha, using adminuser as a sub group
User Harry, also using adminuser as a sub group
User sarah, can not access the SHELL which is interactive in the system, and is not a member of adminuser, natasha , harry , sarah password is redhat.
正解：
groupaddadminuseruseraddnatasha-Gadminuseruseraddharyy-Gadminuseruseraddsarah-s/sbin/nologinPasswdusername//tomodifypasswordorechoredhat|passwd--stdinusernameidnatasha//toviewusergroup.
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There is a server having 172.24.254.254 and 172.25.254.254. Your System lies on 172.24.0.0/16. Make successfully ping to 172.25.254.254 by Assigning following IP: 172.24.0.x where x is your station number.
There is a server having 172.24.254.254 and 172.25.254.254. Your System lies on 172.24.0.0/16. Make successfully ping to 172.25.254.254 by Assigning following IP: 172.24.0.x where x is your station number.
正解：
Usenetconfigcommand
EntertheIPAddressasgivenstationnumberbyyourexaminer:example:172.24.0.1
EnterSubnetMask
EnterDefaultGatewayandprimarynameserver
pressonok
ifdowneth0
ifupeth0
verifyusingifconfigInthelabserverisplayingtheroleofrouterIPforwardingisenabled.JustsettheCorrectIPandgatewayyoucanpingto172.25.254.254.
EntertheIPAddressasgivenstationnumberbyyourexaminer:example:172.24.0.1
EnterSubnetMask
EnterDefaultGatewayandprimarynameserver
pressonok
ifdowneth0
ifupeth0
verifyusingifconfigInthelabserverisplayingtheroleofrouterIPforwardingisenabled.JustsettheCorrectIPandgatewayyoucanpingto172.25.254.254.
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1. Find all sizes of 10k file or directory under the /etc directory, and copy to /tmp/findfiles directory.
2. Find all the files or directories with Lucy as the owner, and copy to /tmp/findfiles directory.
1. Find all sizes of 10k file or directory under the /etc directory, and copy to /tmp/findfiles directory.
2. Find all the files or directories with Lucy as the owner, and copy to /tmp/findfiles directory.
正解：
(1)find/etc-size10k-execcp{}/tmp/findfiles\;(2)find/-userlucy-execcp-a{}/tmp/findfiles\;Note:Iffindusersandpermissionsyouneedtousecp-aoptionstokeepfilepermissionsanduserattributesetc.
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Create one partitions having size 100MB and mount it on data.
Create one partitions having size 100MB and mount it on data.
正解：
1.Usefdisk/dev/hdatocreatenewpartition.2.TypenForNewpartitions.3.ItwillaskforLogicalorPrimaryPartitions.Presslforlogical.4.ItwillaskfortheStartingCylinder:UsetheDefaultbypressingEnterKey.5.TypetheSize:+100MyoucanspecifyeitherLastcylinderofsizehere.6.PressPtoverifythepartitionslistsandrememberthepartitionsname.7.Presswtowriteonpartitionstable.8.EitherRebootorusepartprobecommand.9.Usemkfs-text3/dev/hda?ORmke2fs-j/dev/hda?Tocreateext3filesystem.vi/etc/fstabWrite:/dev/hda?/dataext3defaults12VerifybymountingoncurrentSessionsalso:mount/dev/hda?/data
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/data Directory is shared from the server1.example.com server. Mount the shared directory that:
a. when user try to access, automatically should mount
b. when user doesn't use mounted directory should unmount automatically after 50 seconds.
c. shared directory should mount on /mnt/data on your machine.
/data Directory is shared from the server1.example.com server. Mount the shared directory that:
a. when user try to access, automatically should mount
b. when user doesn't use mounted directory should unmount automatically after 50 seconds.
c. shared directory should mount on /mnt/data on your machine.
正解：
1.vi/etc/auto.master/mnt/etc/auto.misc--timeout=50
vi/etc/auto.misc
data-rwsoftintrserver1.example.com:/data
serviceautofsrestart
chkconfigautofsonWhenyoumounttheotherfilesystemyoushouldunmountthemountedfilesystemAutomountfeatureoflinuxhelpstomountataccesstimeandaftercertainsecondswhenuserunaccessthemounteddirectoryautomaticallyunmountthefilesystem./etc/auto.masteristhemasterconfigurationfileforautofsservice.Whenyoustarttheserviceitreadsthemountpointasdefinedin/etc/auto.master.
vi/etc/auto.misc
data-rwsoftintrserver1.example.com:/data
serviceautofsrestart
chkconfigautofsonWhenyoumounttheotherfilesystemyoushouldunmountthemountedfilesystemAutomountfeatureoflinuxhelpstomountataccesstimeandaftercertainsecondswhenuserunaccessthemounteddirectoryautomaticallyunmountthefilesystem./etc/auto.masteristhemasterconfigurationfileforautofsservice.Whenyoustarttheserviceitreadsthemountpointasdefinedin/etc/auto.master.
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Change the logical volume capacity named vo from 190M to 300M. and the size of the floating range should set between 280 and 320. (This logical volume has been mounted in advance.)
Change the logical volume capacity named vo from 190M to 300M. and the size of the floating range should set between 280 and 320. (This logical volume has been mounted in advance.)
正解：
#vgdisplay(Checkthecapacityofvgifthecapacityisnotenoughneedtocreatepvvgextendlvextend)
#lvdisplay(Checklv)
#lvextend-L+110M/dev/vg2/lv2
#resize2fs/dev/vg2/lv2mount-a(Verify)-------------------------------------------------------------------------------(Decreaselvm)
#umount/media
#fsck-f/dev/vg2/lv2
#resize2fs-f/dev/vg2/lv2100M
#lvreduce-L100M/dev/vg2/lv2
#mount-a
#lvdisplay(Verify)OR
#e2fsck-f/dev/vg1/lvm02
#resize2fs-f/dev/vg1/lvm02
#mount/dev/vg1/lvm01/mnt
#lvreduce-L1G-n/dev/vg1/lvm02
#lvdisplay(Verify)
#lvdisplay(Checklv)
#lvextend-L+110M/dev/vg2/lv2
#resize2fs/dev/vg2/lv2mount-a(Verify)-------------------------------------------------------------------------------(Decreaselvm)
#umount/media
#fsck-f/dev/vg2/lv2
#resize2fs-f/dev/vg2/lv2100M
#lvreduce-L100M/dev/vg2/lv2
#mount-a
#lvdisplay(Verify)OR
#e2fsck-f/dev/vg1/lvm02
#resize2fs-f/dev/vg1/lvm02
#mount/dev/vg1/lvm01/mnt
#lvreduce-L1G-n/dev/vg1/lvm02
#lvdisplay(Verify)