CORRECT TEXT
One Logical Volume named lv1 is created under vg0. The Initial Size of that Logical Volume is 100MB. Now you required the size 500MB. Make successfully the size of that Logical Volume 500M without losing any data. As well as size should be increased online.
Solution:
The LVM system organizes hard disks into Logical Volume (LV) groups. Essentially, physical hard disk partitions (or possibly RAID arrays) are set up in a bunch of equal sized chunks known as Physical Extents (PE). As there are several other concepts associated with the LVM system, let's start with some basic definitions:
Physical Volume (PV) is the standard partition that you add to the LVM mix. Normally, a physical volume is a standard primary or logical partition. It can also be a RAID array.
Physical Extent (PE) is a chunk of disk space. Every PV is divided into a number of equal sized PEs. Every PE in a LV group is the same size. Different LV groups can have different sized PEs.
Logical Extent (LE) is also a chunk of disk space. Every LE is mapped to a specific PE. Logical Volume (LV) is composed of a group of LEs. You can mount a file system such as
/home and /var on an LV.
Volume Group (VG) is composed of a group of LVs. It is the organizational group for LVM. Most of the commands that you'll use apply to a specific VG.
✑ Verify the size of Logical Volume: lvdisplay /dev/vg0/lv1
✑ Verify the Size on mounted directory: df -h or df -h mounted directory name
✑ Use: lvextend -L+400M /dev/vg0/lv1
✑ ext2online -d /dev/vg0/lv1 to bring extended size online.
✑ Again Verify using lvdisplay and df -h command.
Does this meet the goal?
Correct Answer:
A
CORRECT TEXT
Create the following users, groups, and group memberships: A group named adminuser.
A user natasha who belongs to adminuser as a secondary group A user harry who also belongs to adminuser as a secondary group.
A user sarah who does not have access to an interactive shell on the system, and who is not a member of adminuser, natasha, harry, and sarah should all have the password of redhat.
Solution:
✑ groupadd sysmgrs
✑ useradd -G sysmgrs Natasha
✑ We can verify the newly created user by cat /etc/passwd)
# useradd -G sysmgrs harry
# useradd -s /sbin/nologin sarrh
# passwd Natasha
# passwd harry
# passwd sarrah
Does this meet the goal?
Correct Answer:
A
CORRECT TEXT
Part 1 (on Node1 Server)
Task 17 [Accessing Linux File Systems]
Find all the files owned by user “alex” and redirect the output to /home/alex/files.
Solution:
* root@node1 ~]# find / -user alex -type f > /home/alex/files
Does this meet the goal?
Correct Answer:
A
CORRECT TEXT
Find the files owned by harry, and copy it to catalog: /opt/dir
Solution:
# cd /opt/
# mkdir dir
# find / -user harry -exec cp -rfp {} /opt/dir/ ;
Does this meet the goal?
Correct Answer:
A
CORRECT TEXT
Who ever creates the files/directories on a data group owner should automatically be in the same group owner as data.
Solution:
* 1. chmod g+s /data
* 2. Verify using: ls -ld /data
Permission should be like this: drwxrws--- 2 root sysadmin 4096 Mar 16 18:08 /data
If SGID bit is set on directory then who every users creates the files on directory group owner automatically the owner of parent directory. To set the SGID bit: chmod g+s directory To Remove the SGID bit: chmod g-s directory
Does this meet the goal?
Correct Answer:
A