答案：

Solution:
[root@node1 ~]# groupadd sysmgrs
[root@node1 ~]# useradd -G sysmgrs natasha
[root@node1 ~]# useradd -G sysmgrs harry
[root@node1 ~]# useradd -s /bin/false sarah
[root@node1 ~]# echo tianyun |passwd --stdin natasha
[root@node1 ~]# echo tianyun |passwd --stdin harry
[root@node1 ~]# echo tianyun |passwd --stdin sarah

答案：

Solution:
Method 1:
# Copy the yum configuration file from node1.
[root@node2 ~]# scp root@node1:/etc/yum.repos.d/rhcsa.repo /etc/yum.repos.d/
Method 2:
[root@node2 ~]# 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@node2 ~]# yum repoinfo
[root@node2 ~]# yum -y install ftp

答案：

See the solution below in Explanation.
Explanation:
Solution:
mkdir -p /webdata
semanage fcontext -a -t httpd_sys_content_t "/webdata(/.*)?"
restorecon -Rv /webdata
ls -Zd /webdata
Detailed Explanation:
* semanage fcontext defines a persistent SELinux file-context rule.
* restorecon applies the correct labels to the directory and contents.
* httpd_sys_content_t is the standard read-only content type for Apache.
* RHEL 10 SELinux documentation covers persistent labeling with semanage and applying labels with
restorecon. ( Red Hat Documentation )

答案：

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 )