最新的RedHat Red Hat Certified System Administrator - RHCSA (EX200日本語版) - EX200日本語免費考試真題

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

Solution:
# Install and enable tuned
[root@node2 ~]# yum -y install tuned
[root@node2 ~]# systemctl enable tuned
[root@node2 ~]# systemctl restart tuned
# Check the recommended configuration scheme for the system
[root@node2 ~]# tuned-adm recommend
virtual-guest
# Switch to the specified configuration scheme
[root@node2 ~]# tuned-adm profile virtual-guest
# Check the current configuration scheme
[root@node2 ~]# tuned-adm active
Current active profile: virtual-guest

See the solution below in Explanation.
Explanation:
Solution:
* Set the hostname:
hostnamectl set-hostname server1.example.com
* Configure the existing connection with a static IP:
nmcli connection modify ens160 ipv4.address 192.168.1.2/24 ipv4.gateway 192.168.1.1 ipv4.dns 1.1.1.1 ipv4.
method manual connection.autoconnect yes
* Bring the connection up:
nmcli connection up ens160
Detailed Explanation:
* hostnamectl is the correct modern command for changing the system hostname.
* nmcli is the correct tool for RHEL 10 network configuration because the old ifcfg style is removed in
RHEL 10, and NetworkManager keyfiles are the supported model.
* ipv4.method manual tells NetworkManager to use static addressing.
* connection.autoconnect yes ensures the profile activates automatically after reboot.
* nmcli connection up ens160 applies the changes immediately.

See the solution below in Explanation.
Explanation:
Solution:
* Reboot the server.
* At the GRUB menu, highlight the kernel entry and press e.
* Find the line starting with linux.
* Append:
systemd.unit=emergency.target
* Press Ctrl+x to boot.
Detailed Explanation:
* This changes the boot target only for the current boot.
* Emergency mode is useful for rescue and maintenance tasks.
* Red Hat's RHEL 10 systemd guidance documents booting with systemd.unit= < name > .target from
GRUB. ( Red Hat Documentation )

Solution:
[root@node1 ~]# vim /etc/yum.repos.d/rhcsa.repo
[Base]
name=Base
baseurl=http://content/rhel9.0/x86_64/dvd/BaseOS
enabled=1
gpgcheck=no
[App]
name=App
baseurl=http://content/rhel9.0/x86_64/dvd/AppStream
enabled=1
gpgcheck=no
# Verification
[root@node1 ~]# yum repoinfo
[root@node1 ~]# yum -y install vsftpd

See the solution below in Explanation.
Explanation:
Solution:
lvcreate -L 1G -n lvbackup vgdata
mkfs.xfs /dev/vgdata/lvbackup
mkdir -p /backup
echo "/dev/vgdata/lvbackup /backup xfs defaults 0 0" > > /etc/fstab
mount -a
df -h /backup
Detailed Explanation:
* lvcreate allocates a new LV from the existing VG.
* mkfs.xfs creates the filesystem.
* /etc/fstab makes the mount persistent across reboot.
* mount -a tests the fstab entry immediately.
* RHEL 10 storage documentation continues to use LVM and XFS as core administration topics. ( Red
Hat Documentation )

See the solution below in Explanation.
Explanation:
Solution:
systemctl enable --now fstrim.timer
systemctl status fstrim.timer
Detailed Explanation:
* fstrim.timer schedules discard of unused blocks.
* This is useful on SSD-backed storage and thin-provisioned environments.
* RHEL 10 storage documentation explicitly documents enabling fstrim.timer. ( Red Hat Documentation )