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| Section | Objectives |
|---|---|
| Topic 1: Manage software | - Configure access to RPM repositories - Install and remove RPM software packages - Install and remove Flatpak software packages - Configure access to Flatpak repositories |
| Topic 2: Create and configure file systems | - Diagnose and correct file permission problems - Mount and unmount network file systems using NFS - Configure autofs - Extend existing logical volumes - Create, mount, unmount, and use VFAT, ext4, and XFS file systems |
| Topic 3: Operate running systems | - Boot, reboot, and shut down a system normally - Interrupt the boot process to gain access to a system - Boot systems into different targets manually - Preserve system journals - Locate and interpret system log files and journals - Adjust process scheduling - Start, stop, and check the status of network services - Manage tuning profiles - Securely transfer files between systems - Identify CPU and memory intensive processes and kill processes |
| Topic 4: Understand and use essential tools | - Create, delete, copy, and move files and directories - Create hard and soft links - Log in and switch users in multi-user targets - List, set, and change standard ugo/rwx permissions - Access remote systems using SSH - Archive, compress, unpack, and uncompress files using tar, gzip, and bzip2 - Create and edit text files - Access a shell prompt and issue commands with correct syntax - Use grep and regular expressions to analyze text - Use input-output redirection - Locate, read, and use system documentation |
| Topic 5: Configure local storage | - Create and remove physical volumes - Create and delete logical volumes - Configure systems to mount file systems at boot by UUID or label - Add new partitions, logical volumes, and swap non-destructively - List, create, and delete partitions on GPT disks - Assign physical volumes to volume groups |
| Topic 6: Manage basic networking | - Configure network services to start automatically at boot - Restrict network access using firewalld and firewall-cmd - Configure hostname resolution - Configure IPv4 and IPv6 addresses |
| Topic 7: Create simple shell scripts | - Conditionally execute code - Use looping constructs to process files and command-line input - Process output of shell commands within a script - Process script inputs |
| Topic 8: Deploy, configure, and maintain systems | - Configure systems to boot into a specific target automatically - Install and update software packages - Start and stop services and configure services to start automatically at boot - Configure time service clients - Modify the system bootloader - Schedule tasks using at, cron, and systemd timer units |
| Topic 9: Manage users and groups | - Change passwords and adjust password aging for local users - Create, delete, and modify local user accounts - Create, delete, and modify local groups and group memberships - Configure privileged access |
| Topic 10: Manage security | - Manage SELinux port labels - Configure key-based authentication for SSH - Use Boolean settings to modify SELinux settings - Set enforcing and permissive modes for SELinux - List and identify SELinux file and process contexts - Manage default file permissions - Restore default file contexts - Configure firewall settings using firewall-cmd and firewalld |
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NEW QUESTION # 58
Configure the verification mode of your host account and the password as LDAP. And it can login successfully through ldapuser40. The password is set as "password". And the certificate can be downloaded from http://ip/dir/ldap.crt. After the user logs on the user has no host directory unless you configure the autofs in the following questions.
Answer:
Explanation:
system-config-authentication
LDAP Server: ldap//instructor.example.com (In domain form, not write IP) OR
# yum groupinstall directory-client (1.krb5-workstation 2.pam-krb5 3.sssd)
# system-config-authentication
1.User Account Database: LDAP
2.LDAP Search Base DN: dc=example,dc=com
3.LDAP Server: ldap://instructor.example.com (In domain form, not write IP) 4.Download CA Certificate
5.Authentication Method: LDAP password
6.Apply
getent passwd ldapuser40
NEW QUESTION # 59
Add a swap partition.
Adding an extra 500M swap partition to your system, this swap partition should mount automatically when the system starts up. Don't remove and modify the existing swap partitions on your system.
Answer:
Explanation:
see explanation below.
Explanation
fdisk -cu /dev/vda// in the way of expanding the partition, don't make main partition partx -a /dev/vda mkswap /dev/vdax swapon /dev/vdax swapon -s vi /etc/fstab
/dev/vdaxswapswapdefaults0 0
mount -a
NEW QUESTION # 60
Configure your system to use the default repositories
YUM repositories are available from http://content/rhel9.0/x86_64/dvd/BaseOS and http://content/rhel9.0/x86_64/dvd/AppStream. Configure your system to use
these locations as default repositories.
Answer:
Explanation:
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
NEW QUESTION # 61
According the following requirements to create user, user group and the group members:
- A group named admin.
- A user named mary, and belong to admin as the secondary group.
- A user named alice, and belong to admin as the secondary group.
- A user named bobby, bobby's login shell should be non-interactive. Bobby not belong to admin as the secondary group.
Mary, Alice, bobby users must be set "password" as the user's password.
Answer:
Explanation:
groupadd admin
useradd -G admin mary
useradd -G admin alice
useradd -s /sbin/nologin bobby
echo "password" | passwd --stdin mary
echo "password" | passwd --stdin alice
echo "password" | passwd --stdin bobby
NEW QUESTION # 62
Part 2 (on Node2 Server)
Task 5 [Managing Logical Volumes]
Add an additional swap partition of 656 MiB to your system. The swap partition should automatically mount when your system boots Do not remove or otherwise alter any existing swap partition on your system
Answer:
Explanation:
* [root@node2 ~]# lsblk
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
vdc 252:32 0 5G 0 disk
└─vdc1 252:33 0 4.1G 0 part
└─datavg-datalv 253:3 0 3.9G 0 lvm /data
vdd 252:48 0 5G 0 disk
vde 252:64 0 10G 0 disk
[root@node2 ~]# swapon -s
Filename Type Size Used Priority
/dev/dm-1 partition 2097148 1548 -2
[root@node2 ~]# free -m
total used free shared buff/cache available
Mem: 1816 1078 104 13 633 573
Swap: 2047 1 2046
[root@node2 ~]# parted /dev/vdc print
Number Start End Size Type File system Flags
1 1049kB 4404MB 4403MB primary lvm
* [root@node2 ~]# parted /dev/vdc mkpart primary linux-swap 4404MiB 5060MiB
[root@node2 ~]# mkswap /dev/vdc2
Setting up swapspace version 1, size = 656 MiB (687861760 bytes)
no label, UUID=9faf818f-f070-4416-82b2-21a41988a9a7
[root@node2 ~]# swapon -s
Filename Type Size Used Priority
/dev/dm-1 partition 2097148 1804 -2
[root@node2 ~]# swapon /dev/vdc2
* [root@node2 ~]# swapon -s
Filename Type Size Used Priority
/dev/dm-1 partition 2097148 1804 -2
/dev/vdc2 partition 671740 0 -3
[root@node2 ~]# blkid
/dev/vdc2: UUID="9faf818f-f070-4416-82b2-21a41988a9a7" TYPE="swap" PARTUUID="0f22a35f-02"
[root@node2 ~]# vim /etc/fstab
UUID=9faf818f-f070-4416-82b2-21a41988a9a7 swap swap defaults 0 0
[root@node2 ~]# reboot
[root@node2 ~]# swapon -s
Filename Type Size Used Priority
/dev/dm-1 partition 2097148 1804 -2
/dev/vdc2 partition 671740 0 -3
NEW QUESTION # 63
......
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