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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Perform basic shell scripting | - Use conditional statements, loops, and script inputs | |
| Topic 2: Deploy, configure, and maintain systems | 15% | - Manage network interfaces and settings with NetworkManager/nmcli - Manage software packages with DNF/YUM - Configure firewalld firewall rules |
| Topic 3: Manage users and groups | 10% | - Configure SSH key-based authentication - Create, delete, modify users and groups - Manage password policies and sudo access |
| Topic 4: Understand and use essential tools | 25% | - Create/edit text files; manage files, directories, links, permissions - Access remote systems via SSH - Use grep and regular expressions - Use input-output redirection - Access shell prompt and issue commands with correct syntax - Archive, compress, unpack files using tar, gzip, bzip2 |
| Topic 5: Operate running systems | 20% | - Schedule tasks using cron and at - Boot systems into different targets; manage systemd units - Manage logging and journaling - Manage networking and network services - Maintain accurate system time with chrony |
| Topic 6: Manage security | 10% | - Restore file contexts and troubleshoot SELinux issues - Enforce SELinux modes, contexts, booleans, and port labeling |
| Topic 7: Configure local storage | 15% | - List, create, delete partitions and GPT/MBR layouts - Create and manage LVM physical volumes, volume groups, logical volumes - Configure swap space |
| Topic 8: Create and configure file systems | 15% | - Manage access control lists (ACLs) - Create and mount XFS, ext4, VFAT file systems - Mount and manage network file systems (NFS, autofs) - Maintain entries in /etc/fstab using UUID or labels |
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NEW QUESTION # 25
Resize the logical volume vo and its filesystem to 290 MB. Make sure that the filesystem contents remain intact.
Note: Partitions are seldom exactly the same size requested, so a size within the range of 260 MB to 320 MiB is acceptable.
Answer:
Explanation:
df -hT
lvextend -L +100M /dev/vg0/vo
lvscan
xfs_growfs /home/ // home is LVM mounted directory
Note: This step is only need to do in our practice environment, you do not need to do in the real exam resize2fs /dev/vg0/vo // Use this comand to update in the real exam df -hT OR e2fsck -f/dev/vg0/vo umount /home resize2fs /dev/vg0/vo required partition capacity such as 100M lvreduce -l 100M /dev/vg0/vo mount /dev/vg0/vo /home df -Ht
NEW QUESTION # 26
23. Configure Your System to Use Default Repositories
The YUM repositories are available at http://content/rhel9.0/x86_64/dvd/BaseOS and http://content/rhel9.0/x86_64/dvd/AppStream. Configure your system to use
these locations as the default repositories.
Answer:
Explanation:
Solution:
Method 1:
# Copy the yum configuration file from node1.
[root@node2 ~]# scp root@node1:/etc/yum.repos.d/rhcsa.repo /etc/yum.repos.d/
Method 2:
[root@node2 ~]# vim /etc/yum.repos.d/rhcsa.repo
[Base]
name=Base
baseurl=http://content/rhel9.0/x86_64/dvd/BaseOS
enabled=1
gpgcheck=no
[App]
name=App
baseurl=http://content/rhel9.0/x86_64/dvd/AppStream
enabled=1
gpgcheck=no
# Verification
[root@node2 ~]# yum repoinfo
[root@node2 ~]# yum -y install ftp
NEW QUESTION # 27
Create a catalog under /home named admins. Its respective group is requested to be the admin group.
The group users could read and write, while other users are not allowed to access it. The files created by users from the same group should also be the admin group.
Answer:
Explanation:
Answer see in the explanation.
Explanation/Reference:
# cd /home/
# mkdir admins /
# chown .admin admins/
# chmod 770 admins/
# chmod g+s admins/
NEW QUESTION # 28
Part 2 (on Node2 Server)
Task 3 [Managing Logical Volumes]
Create a new volume group in the name of datavg and physical volume extent is 16 MB Create a new logical volume in the name of datalv with the size of 250 extents and file system must xfs Then the logical volume should be mounted automatically mounted under /data at system boot time
Answer:
Explanation:
* [root@node2 ~]# lsblk
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
vdb 252:16 0 5G 0 disk
└─vdb1 252:17 0 4.2G 0 part
└─vgrz-lvrz 253:2 0 4.1G 0 lvm /datarz
vdc 252:32 0 5G 0 disk
vdd 252:48 0 5G 0 disk
vde 252:64 0 10G 0 disk
[root@node2 ~]# parted /dev/vdc mklabel msdos
[root@node2 ~]# parted /dev/vdc mkpart primary 1MiB 4200MiB
[root@node2 ~]# parted /dev/vdc set 1 lvm on
* [root@node2 ~]# udevadm settle
[root@node2 ~]# pvcreate /dev/vdc1
Physical volume "/dev/vdc1" successfully created.
[root@node2 ~]# vgcreate -s 16M datavg /dev/vdc1
Volume group "datavg" successfully created
[root@node2 ~]# lvcreate -n datalv -L 4000M datavg
Logical volume "datalv" created.
[root@node2 ~]# mkfs.xfs /dev/datavg/datalv
[root@node2 ~]# mkdir /data
[root@node2 ~]# blkid
/dev/mapper/datavg-datalv: UUID="7397a292-d67d-4632-941e-382e2bd922ce" BLOCK_SIZE="512" TYPE="xfs"
* [root@node2 ~]# vim /etc/fstab
UUID=7397a292-d67d-4632-941e-382e2bd922ce /data xfs defaults 0 0
[root@node2 ~]# mount UUID=7397a292-d67d-4632-941e-382e2bd922ce /data
[root@node2 ~]# reboot
[root@node2 ~]# df -hT
Filesystem Type Size Used Avail Use% Mounted on
/dev/mapper/datavg-datalv xfs 3.9G 61M 3.9G 2% /data
NEW QUESTION # 29
Please open the ip_forward, and take effect permanently.
Answer:
Explanation:
see explanation below.
Explanation
* vim /etc/sysctl.conf net.ipv4.ip_forward = 1
* sysctl -w (takes effect immediately)
If no "sysctl.conf" option, use these commands:
* sysctl -a |grep net.ipv4
* sysctl -P net.ipv4.ip_forward = 1
* sysctl -w
NEW QUESTION # 30
......
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