EX200 Online Practice Questions and Answers

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/etc/sysconfig/selinux SELINUX=enforcing

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# fdisk /dev/vda n +512M w # partprobe /dev/vda # mkfs -t ext4 /dev/vda5 # mkdir -p /data # vim /etc/fstab /dev/vda5 /data ext4 defaults 0 0 # mount -a

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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

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Create a partition having size 5 GB and change the syste id '8e'.

use partprobe command

pvcreate /dev/hda9 Suppose your partition number is hda9.

vgextend test0 /dev/hda9 vgextend command add the physical disk on volume group.

lvextend -L+5120M /dev/test0/lvtestvolume

verify using lvdisplay /dev/test0/lvtestvolume.

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YUM http://instructor.example.com/pub/rhel6/dvd ldap http//instructor.example.com/pub/EXAMPLE-CA-CERT Install dialog package. yum install dialog

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# which echo # crontab -e 23 14 * * * /bin/echo hello # crontab -l (Verify)

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(a) Created as administrator # crontab -u natasha -e 23 14 * * * /bin/echo "file" (b)Created as natasha # su - natasha $ crontab -e 23 14 * * * /bin/echo "file"

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fdisk /dev/vda pvcreate /dev/vda3 vgcreate –s 16M vg0 /dev/vda3 lvcreate –n lv0 –l 20 vg0 mkfs.ext3 /dev/mapper/vg0-lv0 mkdir /data /etc/fstab: /dev/mapper/vg0-lv0 /data ext3 defaults 0 0 mount –a mount | grep data

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* [root@node2 ~]# lsblk NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT vdb 252:16 0 5G 0 disk vdb1 252:17 0 4.2G 0 part vgrz-lvrz 253:2 0 4.1G 0 lvm /datarz vdc 252:32 0 5G 0 disk vdd 252:48 0 5G 0 disk vde 252:64 0 10G 0 disk [root@node2 ~]# parted /dev/vdc mklabel msdos [root@node2 ~]# parted /dev/vdc mkpart primary 1MiB 4200MiB [root@node2 ~]# parted /dev/vdc set 1 lvm on

* [root@node2 ~]# udevadm settle [root@node2 ~]# pvcreate /dev/vdc1 Physical volume "/dev/vdc1" successfully created. [root@node2 ~]# vgcreate -s 16M datavg /dev/vdc1 Volume group "datavg" successfully created [root@node2 ~]# lvcreate -n datalv -L 4000M datavg Logical volume "datalv" created. [root@node2 ~]# mkfs.xfs /dev/datavg/datalv [root@node2 ~]# mkdir /data [root@node2 ~]# blkid /dev/mapper/datavg-datalv: UUID="7397a292-d67d-4632-941e-382e2bd922ce" BLOCK_SIZE="512" TYPE="xfs"

* [root@node2 ~]# vim /etc/fstab UUID=7397a292-d67d-4632-941e-382e2bd922ce /data xfs defaults 0 0 [root@node2 ~]# mount UUID=7397a292-d67d-4632-941e-382e2bd922ce /data [root@node2 ~]# reboot [root@node2 ~]# df -hT Filesystem Type Size Used Avail Use% Mounted on /dev/mapper/datavg-datalv xfs 3.9G 61M 3.9G 2% /data

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[root@node2 ~]# tuned-adm list [root@node2 ~]# tuned-adm active Current active profile: virtual-guest [root@node2 ~]# tuned-adm recommend virtual-guest [root@node2 ~]# tuned-adm profile virtual-guest [root@node2 ~]# tuned-adm active Current active profile: virtual-guest [root@node2 ~]# reboot [root@node2 ~]# tuned-adm active Current active profile: virtual-guest