EX200 試験問題を無料オンラインアクセス

Solution:
# Install the chrony service for configuring NTP server
[root@node1 ~]# yum -y install chrony
[root@node1 ~]# vim /etc/chrony.conf
server materials.example.com iburst
[root@node1 ~]# systemctl restart chronyd
[root@node1 ~]# systemctl enable chronyd
# Check
# Set an arbitrary time
[root@node1 ~]# date -s "1982-1-1"
Fri Jan 1 12:00:00 AM EST 1982
# Restart the NTP server
[root@node1 ~]# systemctl restart chronyd
# Check if the time is synchronized
# Execute after 3-5 seconds, too fast won't synchronize the time
[root@node1 ~]# date
Tue Dec 12 11:40:19 PM EST 2023
# Use the chronyc command to check synchronization status
[root@node1 ~]# chronyc sources -v
.-- Source mode '^' = server, '=' = peer, '#' = local clock.
/ .- Source state '*' = current best, '+' = combined, '-' = not combined,
| / 'x' = may be in error, '~' = too variable, '?' = unusable.
|| .- xxxx [ yyyy ] +/- zzzz
|| Reachability register (octal) -. | xxxx = adjusted offset,
|| Log2(Polling interval) --. | | yyyy = measured offset,
|| \ | | zzzz = estimated error.
|| | | \
MS Name/IP address Stratum Poll Reach LastRx Last sample
^* classroom.lab.example.com 8 6 17 42 -14us[ -11us] +/- 463us

Solution:
# Scan logical volumes
[root@node2 ~]# lvscan
# Extend the logical volume. With -rL, the filesystem space is adjusted immediately after extending the volume.
[root@node2 ~]# lvextend -rL 300M /dev/myvol/vo
# Check the changes
[root@node2 ~]# lsblk
[root@node2 ~]# lvs
# Verification
[root@node2 ~]# df -h

See the solution below in Explanation.
Explanation:
Solution:
sed -i '/^pool /d;/^server /d' /etc/chrony.conf
echo "server time.example.com iburst" > > /etc/chrony.conf
systemctl enable --now chronyd
systemctl restart chronyd
chronyc sources -v
chronyc tracking
Detailed Explanation:
* chronyd is the RHEL 10 NTP implementation.
* iburst speeds up initial synchronization.
* chronyc sources -v and chronyc tracking confirm the sync state.
* Red Hat's RHEL 10 time synchronization documentation uses chrony as the supported NTP
implementation. ( Red Hat Documentation )

See the solution below in Explanation.
Explanation:
Solution:
dnf install -y vdo kmod-kvdo lvm2
pvcreate /dev/sdc
vgcreate vdo-volumegroup /dev/sdc
lvcreate --type vdo -n vdo-logicalvolume -L 5G -V 50G vdo-volumegroup/vdo-pool
mkfs.xfs /dev/vdo-volumegroup/vdo-logicalvolume
Detailed Explanation:
* VDO provides compression and deduplication.
* -L 5G sets the physical backing size.
* -V 50G sets the logical exposed size.
* This allows thin, optimized storage presentation.
* The exact commands are taken from the RHCSA dataset embedded in the uploaded lab HTML.

Solution:
[root@node1 ~]# useradd -u 3533 manalo
[root@node1 ~]# echo flectrag | passwd --stdin manalo