Correct Answer:

See the solution below in Explanation.
Explanation:
Solution:
* Reboot the system.
* Interrupt GRUB boot.
* Press e to edit the boot entry.
* On the linux line, append:
rd.break
* Boot with Ctrl+x.
* At the emergency shell:
mount -o remount,rw /sysroot
chroot /sysroot
passwd root
touch /.autorelabel
exit
exit
Detailed Explanation:
* rd.break drops you into an early emergency environment.
* /sysroot contains the real root filesystem.
* mount -o remount,rw /sysroot makes it writable.
* chroot /sysroot changes into the installed system.
* passwd root resets the password.
* touch /.autorelabel is critical so SELinux relabels files on next boot.

Correct Answer:

Solution:
# Check the disk layout
[root@node2 ~]# lsblk
# Partition the disk
[root@node2 ~]# fdisk /dev/vdb
Welcome to fdisk (util-linux 2.37.4).
Changes will remain in memory only, until you decide to write them.
Be careful before using the write command.
Command (m for help): n # Add a new partition
Partition type
p primary (1 primary, 0 extended, 3 free) # Primary partition
e extended (container for logical partitions) # Extended partition
Select (default p): p
Partition number (2-4, default 2): # Press Enter
First sector (1026048-20971519, default 1026048): # Press Enter
***Note: The partition size must be larger than the total size, it should not be exactly equal to. It is recommended to add an extra 200M.
Last sector, +/-sectors or +/-size{K,M,G,T,P} (1026048-20971519, default 20971519): +1200M # Partition size
Created a new partition 2 of type 'Linux' and of size 512 MiB.
Command (m for help): w # Save and exit
The partition table has been altered.
Syncing disks.
# Create volume group and logical volume
[root@node2 ~]# vgcreate -s 16M myvg /dev/vdb4
[root@node2 ~]# lvcreate -l 50 -n mylv myvg
# Install vfat support
[root@node2 ~]# yum provides */mkfs.vfat
[root@node2 ~]# yum -y install dosfstools
# Format the logical volume with vfat filesystem
[root@node2 ~]# mkfs.vfat /dev/myvg/mylv
# Create mount point
[root@node2 ~]# mkdir /mnt/mydata
# Update /etc/fstab for automatic mounting
[root@node2 ~]# vim /etc/fstab
/dev/myvg/mylv /mnt/mydata vfat defaults 0 0
# Mount the logical volume
[root@node2 ~]# mount -a

Correct Answer:

See the solution below in Explanation.
Explanation:
Solution:
groupadd ops
visudo -f /etc/sudoers.d/ops-restart-httpd
Add this line to the file:
%ops ALL=(ALL) NOPASSWD: /usr/bin/systemctl restart httpd
Set correct permissions:
chmod 440 /etc/sudoers.d/ops-restart-httpd
visudo -cf /etc/sudoers.d/ops-restart-httpd
Detailed Explanation:
* Using /etc/sudoers.d/ is the standard safe approach.
* visudo validates syntax and helps prevent syntax errors.
* %ops applies the rule to the whole group.
* Restricting the exact command is better than granting broad sudo access. Red Hat's RHEL 10 security
hardening guide documents sudo configuration through sudoers. ( Red Hat Documentation )

Correct Answer:

Solution:
# Note: Perform the following operations by SSHing into localhost as the user "wallah"
[root@node1 ~]# ssh wallah@localhost
# Prepare the relevant mapping directories
[wallah@node1 ~]$ sudo mkdir /opt/{file,progress}
[wallah@node1 ~]$ sudo chown wallah:wallah /opt/{file,progress}
# Start the container and map directories
# :Z changes the SELinux security context of the directory to allow container access.
[wallah@node1 ~]$ podman run -d --name ascii2pdf -v /opt/file:/dir1:Z -v /opt/progress:/dir2:Z pdf
[wallah@node1 ~]$ podman ps -a
# Create systemd service file
[wallah@node1 ~]$ mkdir -p ~/.config/systemd/user
[wallah@node1 ~]$ cd ~/.config/systemd/user/
[wallah@node1 ~]$ podman generate systemd -n ascii2pdf -f --new
[wallah@node1 user]$ ll
total 4
-rw-r--r--. 1 wallah wallah 770 Dec 13 01:07 container-ascii2pdf.service
# Stop and remove the existing ascii2pdf container
[wallah@node1 ~]$ podman stop ascii2pdf
[wallah@node1 ~]$ podman rm ascii2pdf
[wallah@node1 ~]$ podman ps -a
# Enable and start the container-ascii2pdf service
[wallah@node1 ~]$ systemctl --user daemon-reload
[wallah@node1 ~]$ systemctl --user enable --now container-ascii2pdf
# Check container status
[wallah@node1 ~]$ systemctl --user status container-ascii2pdf
[wallah@node1 ~]$ podman ps
# On node1, switch to the root user to perform the following operations
# Ensure that the services for the wallah user start automatically at system boot
[root@node1 ~]# loginctl enable-linger
[root@node1 ~]# loginctl show-user wallah
# Check to ensure the container starts on boot (mandatory operation)
[root@node1 ~]# reboot
[root@node1 ~]# ssh wallah@node1
[wallah@node1 ~]# podman ps