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RedHat RHCE Exam Syllabus Topics:
| Section | Objectives |
|---|---|
| System Administration Fundamentals | - Perform all RHCSA core tasks expected of a system administrator - Manage users, groups, security and services across systems |
| Advanced Automation | - Use Ansible Vault in playbooks - Apply error handling and conditionals in automation |
| Automating Standard Tasks | - Automate scheduled tasks and service configuration - Automate firewall, storage, file systems and security tasks |
| Core Ansible Automation | - Understand and use core components of Ansible - Configure Ansible managed nodes and inventories |
| Playbooks and Roles | - Create and work with roles and content collections - Write and execute Ansible playbooks |
RedHat Red Hat Certified Engineer - RHCE Sample Questions:
CORRECT TEXT
Create a 512M partition, make it as ext4 file system, mounted automatically under /mnt/data and which take effect automatically at boot-start.
Correct Answer:
#fdisk/dev/vdan+512Mw
#partprobe/dev/vda
#mkfs-text4/dev/vda5
#mkdir-p/data
#vim/etc/fstab/dev/vda5/dataext4defaults00
#mount-a
CORRECT TEXT
You are a System administrator. Using Log files very easy to monitor the system. Now there are 50 servers running as Mail, Web, Proxy, DNS services etc. You want to centralize the logs from all servers into on LOG Server.
How will you configure the LOG Server to accept logs from remote host?
Correct Answer:
Bydefaultsystemacceptthelogsonlygeneratedfromlocalhost.ToaccepttheLogfromotherhostconfigure:vi/etc/sysconfig/syslogSYSLOGD_OPTIONS="-m0-r"Where-m0disables'MARK'messages.-renablesloggingfromremotemachines-xdisablesDNSlookupsonmessagesreceivedwith-rservicesyslogrestart
CORRECT TEXT
One Logical Volume named lv1 is created under vg0. The Initial Size of that Logical Volume is 100MB. Now you required the size 500MB. Make successfully the size of that Logical Volume 500M without losing any data. As well as size should be increased online.
Correct Answer:
TheLVMsystemorganizesharddisksintoLogicalVolume(LV)groups.Essentiallyphysicalharddiskpartitions(orpossiblyRAIDarrays)aresetupinabunchofequalsizedchunksknownasPhysicalExtents(PE).AsthereareseveralotherconceptsassociatedwiththeLVMsystemlet'sstartwithsomebasicdefinitions:PhysicalVolume(PV)isthestandardpartitionthatyouaddtotheLVMmix.Normallyaphysicalvolumeisastandardprimaryorlogicalpartition.ItcanalsobeaRAIDarray.PhysicalExtent(PE)isachunkofdiskspace.EveryPVisdividedintoanumberofequalsizedPEs.EveryPEinaLVgroupisthesamesize.DifferentLVgroupscanhavedifferentsizedPEs.LogicalExtent(LE)isalsoachunkofdiskspace.EveryLEismappedtoaspecificPE.LogicalVolume(LV)iscomposedofagroupofLEs.Youcanmountafilesystemsuchas/homeand/varonanLV.VolumeGroup(VG)iscomposedofagroupofLVs.ItistheorganizationalgroupforLVM.Mostofthecommandsthatyou'lluseapplytoaspecificVG.
VerifythesizeofLogicalVolume:lvdisplay/dev/vg0/lv1
VerifytheSizeonmounteddirectory:df-hordf-hmounteddirectoryname
Use:lvextend-L+400M/dev/vg0/lv1
ext2online-d/dev/vg0/lv1tobringextendedsizeonline.
AgainVerifyusinglvdisplayanddf-hcommand.
CORRECT TEXT
According the following requirements to create user, user group and the group members:
- A group named admin.
- A user named mary, and belong to admin as the secondary group.
- A user named alice, and belong to admin as the secondary group.
- A user named bobby, bobby's login shell should be non-interactive. Bobby not belong to admin as the secondary group.
Mary, Alice, bobby users must be set "password" as the user's password.
Correct Answer:
groupaddadminuseradd-Gadminmaryuseradd-Gadminaliceuseradd-s/sbin/nologinbobbyecho"password"|passwd--stdinmaryecho"password"|passwd--stdinaliceecho"password"|passwd--stdinbobby
CORRECT TEXT
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.)
Correct Answer:
#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)
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