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| Section | Weight | Objectives |
|---|---|---|
| Create and configure file systems | 15% | - Manage access control lists (ACLs) - Mount and manage network file systems (NFS, autofs) - Maintain entries in /etc/fstab using UUID or labels - Create and mount XFS, ext4, VFAT file systems |
| Understand and use essential tools | 25% | - Archive, compress, unpack files using tar, gzip, bzip2 - Create/edit text files; manage files, directories, links, permissions - Use input-output redirection - Use grep and regular expressions - Access shell prompt and issue commands with correct syntax - Access remote systems via SSH |
| Manage security | 10% | - Restore file contexts and troubleshoot SELinux issues - Enforce SELinux modes, contexts, booleans, and port labeling |
| Operate running systems | 20% | - Maintain accurate system time with chrony - Boot systems into different targets; manage systemd units - Manage logging and journaling - Schedule tasks using cron and at - Manage networking and network services |
| Deploy, configure, and maintain systems | 15% | - Configure firewalld firewall rules - Manage software packages with DNF/YUM - Manage network interfaces and settings with NetworkManager/nmcli |
| 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 |
| Perform basic shell scripting | - Use conditional statements, loops, and script inputs | |
| Manage users and groups | 10% | - Configure SSH key-based authentication - Manage password policies and sudo access - Create, delete, modify users and groups |
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NEW QUESTION # 17
Download the document from ftp://instructor.example.com/pub/testfile, find all lines containing [abcde] and redirect to /MNT/answer document, then rearrange the order according the original content.
Answer:
Explanation:
Download the file to /tmp first
grep [abcde] /tmp/testfile > /mnt/answer
NEW QUESTION # 18
Configure a cron Task.
User natasha must configure a cron job, local time 14:23 runs and executes: */bin/echo hiya every day.
Answer:
Explanation:
see explanation below.
Explanation
crontab -e -u natasha
23 14/bin/echo hiya
crontab -l -u natasha // view
systemctlenable crond
systemcdlrestart crond
NEW QUESTION # 19
Configure an application
* Configure an application named rhcsa.
* When this application is run as the user natasha, it should display the string: This is a rhcsa
Answer:
Explanation:
Explanation/Reference:
Solution:
su - natasha
vim .bashrc
alias rhcsa='ehco This is a rhcsa'
source .bashrc
rhcsa
NEW QUESTION # 20
14. 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:
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
NEW QUESTION # 21
Create a user alex with a userid of 3400. The password for this user should be redhat.
Answer:
Explanation:
see explanation below.
* useradd -u 3400 alex
* passwd alex
* su -alex
NEW QUESTION # 22
......
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