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| Section | Objectives |
|---|---|
| Topic 1: Understand and use essential tools | - Remote system access using SSH - Shell access and command syntax - Creating and editing text files - Text analysis with grep and regular expressions - Hard and soft links - Users and multi-user targets - System documentation - File archiving and compression - Input and output redirection - File permissions - File and directory management |
| Topic 2: Configure local storage | - Logical volumes - Volume groups - GPT disk partitions - Physical volumes - Adding partitions, logical volumes, and swap - File system mounting using UUID or labels |
| Topic 3: Manage users and groups | - Local group management - Password and password aging management - Privileged access configuration - Local user account management |
| Topic 4: Manage basic networking | - IPv4 and IPv6 configuration - Hostname resolution - Network services at boot - Firewall configuration with firewalld and firewall-cmd |
| Topic 5: Create simple shell scripts | - Conditional execution - Processing script inputs - Processing command output - Looping constructs |
| Topic 6: Deploy, configure, and maintain systems | - Task scheduling with at, cron, and systemd timers - Software installation and updates - Service management - Default boot target configuration - Time service clients - Bootloader configuration |
| Topic 7: Operate running systems | - Network services - Boot systems into different targets - Tuning profiles - Interrupt the boot process - Secure file transfer - Process scheduling - Process monitoring and termination - Boot, reboot, and shut down systems - System logs and journals |
| Topic 8: Manage software | - Configure Flatpak repositories - Install and remove Flatpak packages - Install and remove RPM packages - Configure RPM repositories |
| Topic 9: Create and configure file systems | - NFS file systems - VFAT, ext4, and XFS file systems - Autofs - File permission troubleshooting - Extending logical volumes |
| Topic 10: Manage security | - SELinux Boolean settings - Firewall configuration - Default file permissions - SELinux port labels - SSH key-based authentication - SELinux file context restoration - SELinux file and process contexts - SELinux enforcing and permissive modes |
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NEW QUESTION # 62
Make on /archive directory that only the user owner and group owner member can fully access.
Answer:
Explanation:
see explanation below.
Explanation
* chmod 770 /archive
* Verify using : ls -ld /archive Preview should be like:
drwxrwx--- 2 root sysuser 4096 Mar 16 18:08 /archive
To change the permission on directory we use the chmod command. According to the question that only the owner user (root) and group member (sysuser) can fully access the directory so: chmod 770 /archive
NEW QUESTION # 63
Create Archive
Create a tar archive named /root/backup.tar.bz2, which should contain the contents of /usr/local. The tar archive must be compressed using bzip2.
Answer:
Explanation:
[root@node1 ~]# yum -y install bzip2
[root@node1 ~]# tar -jcvPf /root/backup.tar.bz2 /usr/local
# Verification
[root@node1 ~]# file /root/backup.tar.bz
NEW QUESTION # 64
Configure AutoFS so that accessing /shares/projects mounts server1:/srv/nfs/projects.
Answer:
Explanation:
See the solution below in Explanation.
Explanation:
Solution:
dnf install -y autofs
mkdir -p /shares
echo "/shares /etc/auto.shares" > > /etc/auto.master
echo "projects -fstype=nfs,rw server1:/srv/nfs/projects" > /etc/auto.shares
systemctl enable --now autofs
ls /shares/projects
Detailed Explanation:
* /etc/auto.master defines the main map.
* /etc/auto.shares defines the indirect mount entry.
* The mount happens on demand when /shares/projects is accessed.
* RHEL 10 file-system documentation includes AutoFS for on-demand mounts. ( Red Hat
Documentation )
NEW QUESTION # 65
Part 2 (on Node2 Server)
Task 4 [Managing Logical Volumes]
Resize the logical volume, lvrz and reduce filesystem to 4600 MiB. Make sure the the filesystem contents remain intact with mount point /datarz (Note: partitions are seldom exactly the size requested, so anything within the range of 4200MiB to 4900MiB is acceptable)
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
└─vdc1 252:33 0 4.4G 0 part
└─datavg-datalv 253:3 0 3.9G 0 lvm /data
vdd 252:48 0 5G 0 disk
vde 252:64 0 10G 0 disk
[root@node2 ~]# lvs
LV VG Attr LSize Pool Origin Data% Meta% Move Log Cpy%Sync Convert
lvrz vgrz -wi-ao---- 4.10g
[root@node2 ~]# vgs
VG #PV #LV #SN Attr VSize VFree
vgrz 1 1 0 wz--n- <4.15g 48.00m
[root@node2 ~]# parted /dev/vdb print
Number Start End Size Type File system Flags
1 1049kB 4456MB 4455MB primary lvm
* [root@node2 ~]# df -hT
Filesystem Type Size Used Avail Use% Mounted on
/dev/mapper/vgrz-lvrz ext4 4.0G 17M 3.8G 1% /datarz
[root@node2 ~]# parted /dev/vdb mkpart primary 4456MiB 5100MiB
[root@node2 ~]# parted /dev/vdb set 2 lvm on
[root@node2 ~]# udevadm settle
[root@node2 ~]# pvcreate /dev/vdb2
Physical volume "/dev/vdb2" successfully created.
* [root@node2 ~]# vgextend vgrz /dev/vdb2
Volume group "vgrz" successfully extended
[root@node2 ~]# lvextend -r -L 4600M /dev/vgrz/lvrz
Size of logical volume vgrz/lvrz changed from 4.10 GiB (1050 extents) to 4.49 GiB (1150 extents).
Logical volume vgrz/lvrz successfully resized.
[root@node2 ~]# resize2fs /dev/vgrz/lvrz
[root@node2 ~]# df -hT
Filesystem Type Size Used Avail Use% Mounted on
/dev/mapper/vgrz-lvrz ext4 4.4G 17M 4.2G 1% /datarz
NEW QUESTION # 66
Search files.
Find out files owned by jack, and copy them to directory /root/findresults
Answer:
Explanation:
mkdir/root/findfiles
find / -user jack -exec cp -a {} /root/findfiles/ \; ls /root/findresults
NEW QUESTION # 67
......
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