RH134 - ch06s02

In this exercise, you will create a partition on a new storage device, format it with an XFS file system, configure it to be mounted at boot, and mount it for use.

Outcomes

You should be able to use parted, mkfs.xfs, and other commands to create a partition on a new disk, format it, and persistently mount it.

On workstation, run the lab storage-partitions start command. This command runs a start script that determines if the servera machine is reachable on the network. It also prepares the second disk on servera for the exercise.

[student@workstation ~]$ lab storage-partitions start

Use the ssh command to log in to servera as the student user. The systems are configured to use SSH keys for authentication, therefore a password is not required.
```
[student@workstation ~]$ ssh student@servera
...output omitted...
[student@servera ~]$ 
```
Use the sudo -i command to switch to the root user. If prompted, use student as the password.
```
[student@servera ~]$ sudo -i
[sudo] password for student: student
[root@servera ~]# 
```
Use parted to create a new disk label of type msdos on the /dev/vdb disk to prepare that new disk for the MBR partitioning scheme.
```
[root@servera ~]# parted /dev/vdb mklabel msdos
Information: You may need to update /etc/fstab.
```
Add a new primary partition that is 1 GB in size. For proper alignment, start the partition at the sector 2048. Set the partition file system type to XFS.
1. Use parted interactive mode to help you create the partition.
```
[root@servera ~]# parted /dev/vdb
GNU Parted 3.2
Using /dev/vdb
Welcome to GNU Parted! Type 'help' to view a list of commands.
(parted) mkpart
Partition type?  primary/extended? primary
File system type?  [ext2]? xfs
Start? 2048s
End? 1001MB
(parted) quit
Information: You may need to update /etc/fstab.
```
  Because the partition starts at the sector 2048, the previous command sets the end position to 1001MB to get a partition size of 1000MB (1 GB).
  As an alternative, you can perform the same operation with the following noninteractive command: parted /dev/vdb mkpart primary xfs 2048s 1001MB
2. Verify your work by listing the partitions on /dev/vdb.
```
[root@servera ~]# parted /dev/vdb print
Model: Virtio Block Device (virtblk)
Disk /dev/vdb: 5369MB
Sector size (logical/physical): 512B/512B
Partition Table: msdos
Disk Flags:

Number  Start   End     Size    Type     File system  Flags
 1      1049kB  1001MB  1000MB  primary
```
3. Run the udevadm settle command. This command waits for the system to register the new partition and returns when it is done.
```
[root@servera ~]# udevadm settle
```

Format the new partition with the XFS file system.

[root@servera ~]# mkfs.xfs /dev/vdb1
meta-data=/dev/vdb1              isize=512    agcount=4, agsize=61056 blks
         =                       sectsz=512   attr=2, projid32bit=1
         =                       crc=1        finobt=1, sparse=1, rmapbt=0
         =                       reflink=1
data     =                       bsize=4096   blocks=244224, imaxpct=25
         =                       sunit=0      swidth=0 blks
naming   =version 2              bsize=4096   ascii-ci=0, ftype=1
log      =internal log           bsize=4096   blocks=1566, version=2
         =                       sectsz=512   sunit=0 blks, lazy-count=1
realtime =none                   extsz=4096   blocks=0, rtextents=0

Configure the new file system to mount at /archive persistently.
1. Use mkdir to create the /archive directory mount point.
```
[root@servera ~]# mkdir /archive
```
2. Use the lsblk command with the --fs option to discover the UUID of the /dev/vdb1 device.
```
[root@servera ~]# lsblk --fs /dev/vdb
NAME   FSTYPE LABEL UUID                                 MOUNTPOINT
vdb
└─vdb1 xfs          e3db1abe-6d96-4faa-a213-b96a6f85dcc1
```
  The UUID in the previous output is probably different on your system.
3. Add an entry to /etc/fstab. In the following content, replace the UUID with the one you discovered from the previous step.
```
...output omitted...
UUID=e3db1abe-6d96-4faa-a213-b96a6f85dcc1 /archive xfs defaults  0 0
```
4. Update systemd for the system to register the new /etc/fstab configuration.
```
[root@servera ~]# systemctl daemon-reload
```
5. Execute the mount /archive command to mount the new file system using the new entry added to /etc/fstab.
```
[root@servera ~]# mount /archive
```
6. Verify that the new file system is mounted at /archive.
```
[root@servera ~]# mount | grep /archive
/dev/vdb1 on /archive type xfs (rw,relatime,seclabel,attr2,inode64,noquota)
```

Reboot servera. After the server has rebooted, log in and verify that /dev/vdb1 is mounted at /archive. When done, log off from servera.

Reboot servera.

[root@servera ~]# systemctl reboot
Connection to servera closed by remote host.
Connection to servera closed.
[student@workstation ~]$

Wait a few minutes for servera to reboot and log in as the student user.

[student@workstation ~]$ ssh student@servera
...output omitted...
[student@servera ~]$

Verify that /dev/vdb1 is mounted at /archive.

[student@servera ~]$ mount | grep /archive
/dev/vdb1 on /archive type xfs (rw,relatime,seclabel,attr2,inode64,noquota)

Log off from servera.

[student@servera ~]$ exit
logout
Connection to servera closed.
[student@workstation ~]$

Finish

On workstation, run the lab storage-partitions finish script to complete this exercise.

[student@workstation ~]$ lab storage-partitions finish

This concludes the guided exercise.

Discuss Red Hat System Administration II

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Is It possible to reset root password when the system is on multi-user.target?

jennifer1987

27 lip 2023

Hi thereWell, i have a question, Is It possible to reset root password when the system is on multi-user.target? I was not be able to found a foro o some information related with this and another question that I have, If the grub menu dont show up, is it posible to reset the root password?

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Red Hat System Administration II (RH134)

Haley_Ruccio

21 lip 2023

Build the skills to perform the key tasks needed to become a full-time Linux administratorRed Hat System Administration II (RH134) is the second part of the RHCSA training track for IT professionals who have already attended Red Hat System Administration I. The course goes deeper into core Linux system administration skills in storage configuration and management, installation and deployment of Red Hat Enterprise Linux, management of security features such as SELinux, control of recurring system tasks, management of the boot process and troubleshooting, basic system tuning, and command-line automation and productivity. This course assumes that students have attended Red Hat System Administration I (RH124).Experienced Linux administrators who seek rapid preparation for the RHCSA certification should instead start with RHCSA Rapid Track (RH199).This course is based on Red Hat Enterprise Linux 9.0.Course summaryInstall Red Hat Enterprise Linux using scalable methodsAccess security files, file systems, and networksExecute shell scripting and automation techniquesManage storage devices, logical volumes, and file systemsManage security and system accessControl the boot process and system servicesRun containersAudience for this courseThis course is geared toward Windows system administrators, network administrators, and other system administrators who are interested in supplementing current skills or backstopping other team members, in addition to Linux system administrators who are responsible for these tasks:Configuring, installing, upgrading, and maintaining Linux systems using established standards and proceduresProviding operational supportManaging systems for monitoring system performance and availabilityWriting and deploying scripts for task automation and system administrationRecommended trainingSuccessful completion of Red Hat System Administration I (RH124) is recommended.Experienced Linux administrators seeking to accelerate their path toward becoming a Red Hat Certified System Administrator should start with the RHCSA Rapid Track course (RH199).Take our free assessment to gauge whether this offering is the best fit for your skills.Technology considerationsThere are no special technology requirements.This course is not designed for bring your own device (BYOD).Internet access is not required, but is recommended to allow students to research and access Red Hat online resources.

Welcome to the Red Hat System Administration II (RH134) group in the Red Hat Learning Community!

Deanna

18 lip 2023

We are excited to launch a space dedicated to the Red Hat Training course Red Hat System Administration II! To gain the most value from this group - click the "Join Group" button in the upper right hand corner.We encourage group members to collaborate in this group to discuss topics, ask questions, share best practices and tips, provide course feedback, and share their accomplishments as it relates to RH134.Read more about Red Hat System Administration II here.

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Revision: rh134-8.2-f0a9756