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RedHat EX200 Sample Question Answers
Question # 1
Part 2 (on Node2 Server) Task 8 [Tuning System Performance] Set your server to use the recommended tuned profile
Answer: See the Explanation below:
Explanation: [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
Question # 2
Part 2 (on Node2 Server) Task 2 [Installing and Updating Software Packages] Configure your system to use this location as a default repository: http://utility.domain15.example.com/BaseOS http://utility.domain15.example.com/AppStream Also configure your GPG key to use this location http://utility.domain15.example.com/RPM-GPG-KEY-redhat-release
Part 1 (on Node1 Server) Task 15 [Running Containers] Create a container named logserver with the image rhel8/rsyslog found from the registry registry.domain15.example.com:5000 The container should run as the root less user shangrila. use redhat as password [sudo user] Configure the container with systemd services as the shangrila user using the service name, “container-logserver” so that it can be persistent across reboot. Use admin as the username and admin123 as the credentials for the image registry.
There is a server having 172.24.254.254 and 172.25.254.254. Your System lies on172.24.0.0/16. Make successfully ping to 172.25.254.254 by Assigning following IP:172.24.0.x where x is your station number.
Answer: see explanation below.
Explanation: Use netconfig command Enter the IP Address as given station number by your examiner: example: 172.24.0.1 Enter Subnet Mask Enter Default Gateway and primary name server press on ok ifdown eth0 ifup eth0 verify using ifconfig In the lab server is playing the role of router, IP forwarding is enabled. Just set the Correct IP and gateway, you can ping to 172.25.254.254.
Question # 6
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: See the Explanation below:
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
Question # 7
Part 1 (on Node1 Server) Task 2 [Installing and Updating Software Packages] Configure your system to use this location as a default repository: http://utility.domain15.example.com/BaseOS http://utility.domain15.example.com/AppStream Also configure your GPG key to use this location http://utility.domain15.example.com/RPM-GPG-KEY-redhat-release
Some users home directory is shared from your system. Using showmount -e localhost command, the shared directory is not shown. Make access the shared users home directory.
Answer: see explanation below.
Explanation: Verify the File whether Shared or not ? : cat /etc/exports Start the nfs service: service nfs start Start the portmap service: service portmap start Make automatically start the nfs service on next reboot: chkconfig nfs on Make automatically start the portmap service on next reboot: chkconfig portmap on Verify either sharing or not: showmount -e localhost Check that default firewall is running on system? If running flush the iptables using iptables -F and stop the iptables service.
Question # 9
Part 1 (on Node1 Server) Task 4 [Controlling Access to Files] Create collaborative directory /mnt/shares with the following characteristics: Group ownership of /mnt/shares should be sharegrp. The directory should be readable, writable and accessible to member of sharegrp but not to any other user. (It is understood that root has access to all files and directories on the system) Files created in /mnt/shares automatically have group ownership set to the sharegrp group.
Answer: See the Explanation below:
Explanation: * [root@node1 ~]# mkdir -p /mnt/shares [root@node1 ~]# ls -lrt /mnt/ [root@node1 ~]# chgrp sharegrp /mnt/shares/ [root@node1 ~]# chmod 2770 /mnt/shares/ [root@node1 ~]# ls -lrt /mnt/ ### For Checking ### [root@node1 ~]# su - harry [harry@node1 ~]$ cd /mnt/shares/ [harry@node1 shares]$ touch harry [harry@node1 shares]$ logout [root@node1 ~]# su - natasha [natasha@node1 ~]$ cd /mnt/shares/ [natasha@node1 shares]$ touch natasha [natasha@node1 shares]$ ls -lrt -rw-rw-r--. 1 harry sharegrp 0 Mar 21 06:03 harry -rw-rw-r--. 1 natasha sharegrp 0 Mar 21 06:03 natasha
Question # 10
Please open the ip_forward, and take effect permanently.