Free Red Hat Certified System Administrator (RHCSA) Exam EX200 Exam Practice Test

Create a volume group, and set 16M as a extends. And divided a volume group containing 50 extends on volume group lv, make it as ext4 file system, and mounted automatically under /mnt/data.

• Explanation:
  # pvcreate /dev/sda7 /dev/sda8
  # vgcreate -s 16M vg1 /dev/sda7 /dev/sda8
  # lvcreate -l 50 -n lvm02
  # mkfs.ext4 /dev/vg1/lvm02
  # blkid /dev/vg1/lv1
  # vim /etc/fstab
  # mkdir -p /mnt/data
  UUID=xxxxxxxx /mnt/data ext4 defaults 0 0
  # vim /etc/fstab
  # mount -a
  # mount
  (Verify)
  

Set cronjob for user natasha to do /bin/echo hiya at 14:23.

• Explanation:
  # crontab -e -u natasha
  23 14 * * * /bin/echo hiya
  wq!
  

There is a server having 172.24.254.254 and 172.25.254.254. Your System lies on 172.24.0.0/16. Make successfully ping to 172.25.254.254 by Assigning following IP: 172.24.0.x where x is your station number.

• 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.
  

Part 1 (on Node1 Server)Task 12 [Accessing Network-Attached Storage]Configure autofs to automount the home directories of user remoteuserX. Note the following:utility.domain15.example.com(172.25.15.9), NFS-exports /netdir to your system, where user is remoteuserX where X is your domain numberremoteuserX home directory is utility.domain15.example.com:/netdir/remoteuserXremoteuserX home directory should be auto mounted locally at /netdir as /netdir/remoteuserXHome directories must be writable by their users while you are able to login as any of the remoteuserX only home directory that is accessible from your system

• Explanation:
  *
  *
  [root@host ~]#systemctl enable sssd.service
  [root@host ~]#systemctl start sssg.service
  [root@host ~]#getent passwd remoteuser15
  [root@host ~]#yum install autofs
  [root@host ~]#vim /etc/auto.master.d/home9.autofs
  /netdir/remoteuser15 /etc/auto.home9
  [root@host ~]#vim /etc/auto.home9
  remoteuser15 --rw,sync utility.network15.example.com:/netdir/remoteuser15/&
  [root@host ~]#systemctl enable autofs
  [root@host ~]#systemctl restart autofs
  [root@host ~]#su - remoteuser15
  

The system ldap.example.com provides an LDAP authentication service.Your system should bind to this service as follows:When properly configured, ldapuserX should be able to log into your system, but will not have a home directory until you have completed the autofs requirement. Username: ldapuser11Password: password

• Explanation:
  system-config-authentication LDAP user DN=dc=domain11,dc=example,dc=com Server= host.domain11.example.com
  Certificate= http://host.domain11.example.com/pub/domain11.crt (enter url carefully, there maybe // or ..)
  LDAP password
  OK
  starting sssd
  su -ldapuser11 Display Bash prompt #exit
  

According the following requirements, configure autofs service and automatically mount to user's home directory in the ldap domain.- Instructor.example.com (192.168.0.254) has shared /home/guests/ldapuserX home directory to your system by over NFS export, X is your hostname number.- LdapuserX's home directory is exist in the instructor.example.com: /home/ guests/ldapuserX- LdapuserX's home directory must be able to automatically mount to /home/ guests/ldapuserX in your system.- Home directory have write permissions for the corresponding user.However, you can log on to the ldapuser1 - ldapuser99 users after verification. But you can only get your corresponding ldapuser users. If your system's hostname is server1.example.com, you can only get ldapuser1's home directory.

• Explanation:
  mkdir --p /home/guests
  cat /etc/auto.master:
  /home/guests /etc/auto.ldap
  cat /etc/auto.ldap:
  ldapuser1 -rw instructor.example.com:/home/guests/ldapuser1
  automatically mount all the user's home directory #* -rw instructor.example.com:/home/guests/&
  

Configure autofs.Configure the autofs automatically mount to the home directory of LDAP, as required:server.domain11.example.com use NFS to share the home to your system. This file system contains a preconfigured home directory of user ldapuserX.Home directory of ldapuserX is:server.domain11.example.com /home/guests/ldapuserHome directory of ldapuserX should automatically mount to the ldapuserX of the local /home/guests Home directory's write permissions must be available for users ldapuser1's password is password

• Explanation:
  yum install -y autofs
  mkdir /home/rehome
  /etc/auto.master
  /home/rehome/etc/auto.ldap
  Keep then exit
  cp /etc/auto.misc /etc/auto.ldap
  /etc/auto.ldap
  ldapuserX -fstype=nfs,rw server.domain11.example.com:/home/guests/
  Keep then exit
  systemctl start autofs
  systemctl enable autofs
  su - ldapuserX// test
  If the above solutions cannot create files or the command prompt is -bash-4.2$, it maybe exist multi-level directory, this needs to change the server.domain11.example.com:/home/guests/ to server.domain11.example.com:/home/guests/ldapuserX. What is multi-level directory? It means there is a directory of ldapuserX under the /home/guests/ldapuserX in the questions. This directory is the real directory.
  

Configure /var/tmp/fstab Permission.Copy the file /etc/fstab to /var/tmp/fstab. Configure var/tmp/fstab permissions as the following:Owner of the file /var/tmp/fstab is Root, belongs to group rootFile /var/tmp/fstab cannot be executed by any userUser natasha can read and write /var/tmp/fstabUser harry cannot read and write /var/tmp/fstabAll other users (present and future) can read var/tmp/fstab.

• Explanation:
  cp /etc/fstab /var/tmp/
  /var/tmp/fstab view the owner setfacl -m u:natasha:rw- /var/tmp/fstab setfacl -m u:haryy:--- /var/tmp/fstab
  Use getfacl /var/tmp/fstab to view permissions
  

A YUM repository has been provided at http://server.domain11.example.com/pub/x86_64/Server.Configure your system to use this location as a default repository.

• Explanation:
  vim/etc/yum.repos/base.repo
  [base]
  name=base
  baseurl= http://server.domain11.example.com/pub/x86_64/Server
  gpgcheck=0
  enable=1
  Save and Exit
  Use yum list for validation, the configuration is correct if list the package information. If the Yum configuration is not correct then maybe cannot answer the following questions.
  

Install a FTP server, and request to anonymous download from /var/ftp/pub catalog. (it needs you to configure yum direct to the already existing file server.)

• Explanation:
  # cd /etc/yum.repos.d
  # vim local.repo
  [local]
  name=local.repo
  baseurl=file:///mnt
  enabled=1
  gpgcheck=0
  # yum makecache
  # yum install -y vsftpd
  # service vsftpd restart
  # chkconfig vsftpd on
  # chkconfig --list vsftpd
  # vim /etc/vsftpd/vsftpd.conf
  anonymous_enable=YES