Novell Clp10 Question

Hi everyone

Here is the question i got for my CLP. I got three others. If you can help me to solve this problem in the next 48 hours, i will post the rest of the questions.

thanks

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As a SUSE LINUX professional, you have been called to help a company deploy SLES 10 in their environment. They have an established base SUSE LINUX Enterprise Server 10 image that has been prepared for you. Your job is to REMOTELY access the server and configure it based on their specifications.

NOTE: Latency (or lag) is a part of the exam environment and adequate time has been added in order to provide for latency delays. Verify that all configuration files, etc. which you are asked to create or modify are named EXACTLY as requested in the objectives!

Task 1: User administration

a) Add a new group “engineers” to both of your systems (server1 and server2). The GID of this group is 1100.

cool.gif Modify the default settings for adding new users on server1 > only:
* The access permissions for the home directory are drwx——.
* All directories and files created by the users should have full access permissions for the owner and none for the group members and all other users.
* Modify the list of files and directories to be created automatically:
Remove .emacs, .xemacs, .muttrc, public_html.
- Add directories “Engineers” and “Projects”

c) Use file system ACLs to define access permissions for the group “engineers”:
* The home directories of all users need to have an ACL set that allows the members of the group “engineers” to access the home directories of other users (_no_write_permissions).
* The directory “Engineers” in every user’s home directory (e.g. /home/tbarnes/Engineers) needs to have a default ACL set that allows the members of the group “engineers” to read all files and subdirectories.

d) Add the following users to both of your systems (server1 and server2) whose primary group is “users” and who are also members of the group “engineers”:

Name username UID
————————————
Thomas Barnes tbarnes 1010
James King jguide 1011

On server1, the home directories of these users have to be created below /home. Do not create the home directories on server2. The password for each user has to be set to “linux” (ignore all warning messages). Note: The home directories will be hosted on server1 only and will be provided via NFS, so steps

cool.gif and
c) do_no_need to be done on server2

Task 2: Export directories via NFS

a) On server1, create a new partition with the following properties:
* The size of the partition is 1 GB.
* The filesystem is ReiserFS.
* The partition is mounted at /data automatically during startup. Note: Do not reboot server1 to make the newly created partition known to the system. Use appropriate commands (e.g. partprobe) instead.

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cool.gif Create a shared directory called “/data/engineers” with the following properties:
* The owner of this directory is “root”, the directory belongs to the group “engineers”.
* The owner and members of the group “engineers” have full access to this directory (rwx), all other users have no access at all.
* All files created in this directory belong to the group “engineers”, independent of the current GID of the owner of this file.
* Files can only be removed by their respective ownews.
c) Configure the NFS server on server1 to export the directories /home and /data/engineers. Use the following parameters:
* All machines in the network 192.168.146.0/24 have access to /home and /data/engineers.
* The exported directories allow read/write access (subject to correct permissions).
* No access with root permissions is allowed.
* Make sure the NFS server will be started automatically after a reboot.
d) Configure the client machine (server2) to mount /home and /data/engineers from server1 automatically during startup. The mount points are /home and /data/engineers, respectively. Use the following parameters:
* The size of the buffer for read and write access is 8kb.
* The execution of binaries or shell scripts residing on the NFS filesystem is not allowed.

Task 3: Export directories using Samba.

Configure Samba on server1 using the following parameters.

a) The name of the workgroup is DA
cool.gif The directory /home is exported as a share with the name “homes” and the following properties:
* This directory must not be browseable.
* All files have to be created with read and write access for the owner and no access for the group and any other users.
* Only clients from the network 192.168.146.0/24 are allowed to access this share. Note: Modify the already existing share [homes]. Only the properties listed are required, so delete any other (already existing) settings.
c) The directory /data/engineers has to be exported as a share with the name “data” and the following properties:
* This directory has to be browseable, all files have to be created with read and write access for the owner, read access for the members of the group “engineers”, and no access for any other user.
* Only clients from the networks 192.168.146.0/24 and 192.168.147.0/24 are allowed to access this share.
d) The Samba server is started automatically after a reboot.
e) Make the users from task 1 known to the Samba server by adding them to /etc/samba/smbpasswd. Use the password “linux” for each of these Samba users.

Note: To test your Samba server from the Linux clients, you can use the command “smbclient”.

Task 4: Backup of home directories.

On server1, create a shell script (bash) called /root/bin/backup to perform a differential backup of the home directories (/home). Use the following parameters:

a) The script uses the tar command to backup the data. As tar can not save the file system ACLs, the script has to generate a file /home/acls which contains the ACL information of all files in the user’s home directories. This file has to be created every time before a backup is done and has to be backed up with the home directories.
cool.gif On Friday the script has to perform a full backup.
c) On Monday to Thursday the script has to perform a differential backup, copying only the files which have changed since the last full backup.
d) The script has to find out on which day of the week it is called and has to perform the corresponding backup.
e) Use a reference file /var/log/backup/last-backup to find all files to be copied. Update the time stamp of the reference file after a full backup.
f) For simplicity, create the following backup files:

* Full backup: /tmp/backup-full-YYY-MM-DD.tar
* Differential backup: /tmp/backup-diff-YYYY-MM-DD.tar. YYY-MM-DD is the date of the backup (e.g . 2006-07-21).
g) Log the names of all files saved during the backup to /var/log/backup/backup-YYY-MM-DD.log where YYYY-MM-DD is the date format (e.g., 2006-07-21).
h) If the backup did not finish successfully, send an email to root@server1.digitalairlines.com. The subject of the email has to be “Backup failed”, no text is needed in the mail body.
i) Schedule the script using the crontab command for Monday to Friday evening at 20:00.

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One Comment on “Novell Clp10 Question”

  • kwame asare wrote on 2 September, 2008, 9:23

    Is there any answer to Task 4: Backup of home directories? Thanks

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