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

# chkconfig autofs on
# cd /etc/
# vim /etc/auto.master
/rhome /etc/auto.ldap
# cp auto.misc auto.ldap
# vim auto.ladp
ldapuser40 -rw,soft,intr 172.24.40.10:/rhome/ldapuser40
* -rw,soft,intr 172.16.40.10:/rhome/&
# service autofs stop
# server autofs start
# showmount -e 172.24.40.10
# su - ladpuser40

Solution:
# Connect to servera via console for IP modification, then check using the ip addr command.
# After confirming no issues, SSH to servera for hostname modification. This way, you can copy the hostname to avoid typos.
[root@clear ~] nmcli con show
[root@clear ~] nmcli con mod 'network configuration name' ipv4.method manual ipv4.addresses 172.25.0.25/24 ipv4.gateway 172.25.0.254 ipv4.dns 172.25.0.254
autoconnect yes
[root@clear ~] nmcli con up 'network configuration name'
[root@clear ~] ip a
[root@clear ~] ssh [email protected]
[root@clear ~] hostnamectl set-hostname red.lab0.example.com
# Verification
[root@node1 ~] ip a //Check if the IP is correct
[root@node1 ~] hostname //Check if the hostname is correct

groupadd sysmgrs
useradd -G sysmgrs Natasha
We can verify the newly created user by cat /etc/passwd)
# useradd -G sysmgrs harry
# useradd -s /sbin/nologin sarrh
# passwd Natasha
# passwd harry
# passwd sarrah

Solution:
# Install container management tools
[root@node1 ~]# dnf -y install container-tools
# Execute operations as the user wallah
[root@node1 ~]# ssh wallah@localhost
# Download the container build file
[wallah@node1 ~]# wget http://classroom/Containerfile
# Log in to the image registry
[wallah@node1 ~]# podman login -u admin -p redhat321 registry.lab.example.com
# Build the container image using the Containerfile in the current directory, with the image name "pdf"
[wallah@node1 ~]# podman build -t pdf .
# View the images
[wallah@node1 ~]$ podman images
REPOSITORY TAG IMAGE ID CREATED SIZE
localhost/pdf latest 1d6e7ea71460 31 seconds ago 300 MB
registry.lab.example.com/ubi9-beta/ubi latest 28b0a4b69d9b 2 years ago 229 MB