Install
the appropriate kernel update from http://server.domain11.example.com/pub/updates.
The following criteria must also be met:
The updated kernel is the default kernel when the system is rebooted
The original kernel remains available and bootable on the system
Solution:
see explanation below.
ftp server.domain11.example.com Anonymous login
ftp> cd /pub/updates ftp> ls
ftp> mget kernel* ftp> bye rpm -ivh kernel* vim /etc/grub.conf
Check the updatted kernel is the first kernel and the orginal kernel remains available. set default=0
wq!
Does this meet the goal?
Correct Answer:
A
Configure NTP.
Configure NTP service, Synchronize the server time, NTP server: classroom.example.com
Solution:
Configure the client:
Yum -y install chrony
Vim /etc/chrony.conf
Add: server classroom.example.com iburst
Start: systemctl enable chronyd
systemctl restart chronyd
Validate: timedatectl status
Does this meet the goal?
Correct Answer:
A
Part 1 (on Node1 Server)
Task 16 [Running Containers]
Configure your host journal to store all journal across reboot
Copy all journal files from /var/log/journal/ and put them in the /home/shangrila/container-logserver
Create and mount /home/shangrila/container-logserver as a persistent storage to the container as /var/log/ when container start
Solution:
*
[shangrila@node1 ~]$ podman ps
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
d5ffe018a53c registry.domain15.example.com:5000/rhel8/rsyslog:latest /bin/rsyslog.sh 5 seconds ago Up 4 seconds ago logserver
[shangrila@node1 ~]$ podman stats logserver
Error: stats is not supported in rootless mode without cgroups v2
[shangrila@node1 ~]$ podman stop logserver d5ffe018a53ca7eb075bf560d1f30822ab6fe51eba58fd1a8f370eda79806496
[shangrila@node1 ~]$ podman rm logserver
Error: no container with name or ID logserver found: no such container
[shangrila@node1 ~]$ mkdir -p container-journal/
*
[shangrila@node1 ~]$ sudo systemctl restart systemd-journald
[sudo] password for shangrila:
[shangrila@node1 ~]$ sudo cp -av /var/log/journal/* container-journal/
[shangrila@node1 ~]$ sudo cp -av /var/log/journal/* container-journal/
[shangrila@node1 ~]$ sudo chown -R shangrila container-journal/
[shangrila@node1 ~]$ podman run -d --name logserver -v
/home/shangrila/container-journal/:/var/log/journal:Z registry.domain15.example.com:5000/rhel8/rsyslog
[shangrila@node1 ~]$ podman ps
[shangrila@node1 ~]$ loginctl enable-linger
[shangrila@node1 ~]$ loginctl show-user shangrila|grep -i linger Linger=yes
*
[shangrila@node1 ~]$ podman stop logserver
[shangrila@node1 ~]$ podman rm logserver
[shangrila@node1 ~]$ systemctl --user daemon-reload
[shangrila@node1 ~]$ systemctl --user enable --now container-logserver
[shangrila@node1 ~]$ podman ps
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
3903e1d09170 registry.domain15.example.com:5000/rhel8/rsyslog:latest /bin/rsyslog.sh 4 seconds ago Up 4 seconds ago logserver
[shangrila@node1 ~]$ systemctl --user stop container-logserver.service
*
[shangrila@node1 ~]$ sudo reboot
[shangrila@node1 ~]$ podman ps -a
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
7e6cd59c506a registry.domain15.example.com:5000/rhel8/rsyslog:latest /bin/rsyslog.sh 10 seconds ago Up 9 seconds ago logserver
Does this meet the goal?
Correct Answer:
A
Create a user alex with a userid of 3400. The password for this user should be redhat.
Solution:
see explanation below.
useradd -u 3400 alex passwd alex su -alex
Does this meet the goal?
Correct Answer:
A
Find the rows that contain abcde from file /etc/testfile, and write it to the file/tmp/testfile, and the sequence is requested as the same as /etc/testfile.
Solution:
# cat /etc/testfile | while read line;
do
echo $line | grep abcde | tee -a /tmp/testfile
done
OR
grep `abcde' /etc/testfile > /tmp/testfile
Does this meet the goal?
Correct Answer:
A
