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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Perform basic shell scripting | - Use conditional statements, loops, and script inputs | |
| Topic 2: Manage security | 10% | - Restore file contexts and troubleshoot SELinux issues - Enforce SELinux modes, contexts, booleans, and port labeling |
| Topic 3: Configure local storage | 15% | - Create and manage LVM physical volumes, volume groups, logical volumes - List, create, delete partitions and GPT/MBR layouts - Configure swap space |
| Topic 4: Manage users and groups | 10% | - Create, delete, modify users and groups - Manage password policies and sudo access - Configure SSH key-based authentication |
| Topic 5: Operate running systems | 20% | - Schedule tasks using cron and at - Manage networking and network services - Boot systems into different targets; manage systemd units - Manage logging and journaling - Maintain accurate system time with chrony |
| Topic 6: Understand and use essential tools | 25% | - Access shell prompt and issue commands with correct syntax - Archive, compress, unpack files using tar, gzip, bzip2 - Create/edit text files; manage files, directories, links, permissions - Use grep and regular expressions - Access remote systems via SSH - Use input-output redirection |
| Topic 7: 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 8: Create and configure file systems | 15% | - Mount and manage network file systems (NFS, autofs) - Manage access control lists (ACLs) - Create and mount XFS, ext4, VFAT file systems - Maintain entries in /etc/fstab using UUID or labels |
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NEW QUESTION # 28
Which of the following HTTP methods are used by REST? (Choose three correct answers.)
Answer: B,C,D
Explanation:
Explanation/Reference:
Reference https://restfulapi.net/http-methods/
NEW QUESTION # 29
Configure Cron Job
Configure a cron job to automatically execute /usr/bin/echo hello every day at 14:23 for the user harry.
Answer:
Explanation:
[root@node1 ~]# systemctl status crond
[root@node1 ~]# systemctl enable crond
[root@node1 ~]# crontab -e -u harry
23 14 * * * /usr/bin/echo hello
# Verification
[root@node1 ~]# crontab -l -u harry
NEW QUESTION # 30
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 # 31
Add 3 users: harry, natasha, tom.
The requirements: The Additional group of the two users: harry, Natasha is the admin group. The user: tom's login shell should be non-interactive.
Answer:
Explanation:
see explanation below.
Explanation
# useradd -G admin harry
# useradd -G admin natasha
# useradd -s /sbin/nologin tom
# id harry;id Natasha (Show additional group)
# cat /etc/passwd
(Show the login shell)
OR
# system-config-users
NEW QUESTION # 32
Configure Container as a Service
As the user "wallah," configure a systemd service for the container:
- Container name: ascii2pdf
- Use the image named pdf created earlier.
- Service name: container-ascii2pdf
- Automatically start the service on system reboot without manual intervention.
- Configure the service to automatically mount /opt/file to /dir1 and /opt/progress to /dir2 in the container upon startup.
Answer:
Explanation:
# 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
NEW QUESTION # 33
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