cd /var/www/html

wget http://instructor.example.com/pub/serverX.html mv serverX.html index.html /etc/init.d/httpd restart

chkconfig httpd on

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.

yum -y install sssd authconfig-gtk krb5-workstation authconfig-gtk // open the graphical interface

Modify user account database to ldap, fill up DN and LDAP SERVER as questions required, use TLS to encrypt connections making tick, write http://server.domain11.example.com/pub/EXAMPLE-CA-CERT to download ca, authentication method choose ldap password.

You can test if the ldapuser is added by the following command:

Id ldapuser1

Note: user password doesn’t not need to set

• lvextend -L+200M /dev/test0/testvolume1 Use lvdisplay /dev/test0/testvolume1)
• ext2online -d /dev/test0/testvolume1

lvextend command is used the increase the size of Logical Volume. Other command lvresize command also here to resize. And to bring increased size on online we use the ext2online command.

• use the authconfig --nisserver= --nisdomain= -- update

Example: authconfig --niserver=192.168.0.254 --nisdomain=RHCE --update or system-config-authentication

• Click on Enable NIS
• Type the NIS Domain: RHCE
• Type Server 192.168.0.254 then click on next and ok
• You will get a ok message.
• Create a Directory /rhome/stationx where x is your station number.

• vi /etc/auto.master and write at the end of file /rhome/stationx /etc/auto.home --timeout=60
• vi /etc/auto.home and write

* -rw,soft,intr 192.168.0.254:/rhome/stationx/&

Note: please specify your station number in the place of x.

• Service autofs restart
• Login as the nisuser2001 or nisuser2002 on another terminal will be Success. According to question, RHCE domain is already configured. We have to make a client of RHCE domain and automatically mount the home directory on your system. To make a member of domain, we use the authconfig with option or system-config authentication command. There a are lots of authentication server i.e NIS, LDAB, SMB etc. NIS is a RPC related Services, no need to configure the DNS, we should specify the NIS server address.

Here Automount feature is available. When user tried to login, home directory will automatically mount. The automount service used the /etc/auto.master file. On

/etc/auto.master file we specified the mount point the configuration file for mount point.

*

[root@node2 ~]# lsblk

NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT

vdd 252:48 0 5G 0 disk

vde 252:64 0 10G 0 disk

└─vdo1 253:4 0 50G 0 vdo /vbread

[root@node2 ~]# yum install stratis* -y

[root@node2 ~]# systemctl enable --now stratisd.service

[root@node2 ~]# systemctl start stratisd.service

[root@node2 ~]# systemctl status stratisd.service

[root@node2 ~]# stratis pool create think_pool /dev/vdd

[root@node2 ~]# stratis pool list

Name Total Physical Properties

think_pool 5 GiB / 37.63 MiB / 4.96 GiB ~Ca,~Cr

*

[root@node2 ~]# stratis filesystem create think_pool think_fs

[root@node2 ~]# stratis filesystem list

Pool Name Name Used Created Device UUID

think_pool think_fs 546 MiB Mar 23 2021 08:21 /stratis/think_pool/think_fs ade6fdaab06449109540c2f3fdb9417d

[root@node2 ~]# mkdir /strav

[root@node2 ~]# lsblk

[root@node2 ~]# blkid

/dev/mapper/stratis-1-91ab9faf36a540f49923321ba1c5e40d-thin-fs-ade6fdaab06449109540c2f3fdb9417d: UUID="ade6fdaa-b064-4910-9540-c2f3fdb9417d" BLOCK_SIZE="512" TYPE="xfs"

*

[root@node2 ~]# vim /etc/fstab

UUID=ade6fdaa-b064-4910-9540-c2f3fdb9417d /strav xfs defaults,x-systemd.requires=stratisd.service 0 0

[root@node2 ~]# mount /stratis/think_pool/think_fs /strav/

[root@node2 ~]# df -hT

/dev/mapper/stratis-1-91ab9faf36a540f49923321ba1c5e40d-thin-fs-ade6fdaab06449109540c2f3fdb9417d xfs 1.0T 7.2G 1017G 1% /strav

# chkconfig autofs on

# cd /etc/

# vim /etc/auto.master

/rhome /etc/auto.ldap

# cp auto.misc auto.ldap

# vim auto.ladp

ldapuser40 -rw,soft,intr 172.24.40.10:/rhome/ldapuser40

* -rw,soft,intr 172.16.40.10:/rhome/&

# service autofs stop

# server autofs start

# showmount -e 172.24.40.10

# su - ladpuser40