This document discusses software installation and configuration of Linux services including RPM packages, YUM, DNS server, and Apache web server. It provides instructions on installing software using RPM and YUM, configuring BIND as a DNS server, and setting up an Apache web server. Key steps include installing software, editing configuration files, starting and enabling services, and testing the DNS lookups and web pages.

1. Govt. Engg . College JhalawarSummerTrainingPresentation

2. Name Kuldeep GautamBranch Computer Science and EngineeringCollege Id. 2007UCS029Roll No. 07EEJCS028Training CompanyGrras Linux Training and Development Center Jaipur

3. Software InstallationIn Linux Software is install two types:First:rpm Command: Rat hat Packet ManagerWhat is an RPM Package?It’s a piece of software, all put in one RPM file. • For example, I am using the. . . let’s see. . .$ rpm -q evince -evince-0.5.1-3. . . software package to display these notes. • The name of the package is evince. • The version of the package is 0.5.1 • The release is 3

4. Advantages of RPM packages:You can install a new package easily with one operation

5. You can uninstall a package just as easily

6. the package can contain information about what else it needs to work properly

7. The RPM system includes a database with lots of Information about how the files should be installed, their size, owner, type,. . .rpm Commands: rpm -qa | less list all installed software packagesrpm -q httpd show the version of the httpd package, if it is installedrpm -qa | grep httpd show all installed packages that have httpd in their namerpm -ql httpd list all files in the httpd package

8. rpm -qd httpd list all documentation files in the httpd packagerpm -qc httpd list all configuration files in the httpd packagerpm -qi httpd display information about the packagerpm -V httpd verify that the httpd package is correctly installedrpm -qf /etc/passwd determine which package the /etc/passwd file belongs to

9. rpm’s problem:rpm tool requires dependency resolutionprogram x depends on library y

10. library y must be in place

11. if library y isn’t there, you must obtain an install it separately

12. finding library y can be hard

13. library y has its own dependenciesSecond:The Yellow dog Updater, Modified (YUM) is an open-source command – line package - management utility for RPM-compatible Linux operating systems Released under the GNU General Public License It was developed by Seth Vidal and a group of volunteer programmers.Yum repositoriesA separate tool, createrepo, sets up yum repositories, generating the necessary XMLmetadata Yum Steps:Install createrepo by rpm command rpm -ivh createrepo

14. Create repo of Software pakages createrepo -v pakage nameCreate a repo file in yum.reposd with extension .repo

15. Do entry in repo file by following method: [software name] baseurl=file:///pakage path gpgcheck=0

16. Clean up yum yum clean allInstall the softwares yum install soft ware_nameUninstall soft wares yum remove soft ware_name

17. D.N.S. ServerDomain Name System:DNS is a network service that enables clients to resolve names to IP address and vice-versa.

18. Allows machines to be logically grouped by domain names

19. Provides email routing informationD.N.S. Hierarchy:

20. A DNS server maintains the name to IP address mapping of the domain for which it is the name server.

21. The DNS server for a domain is registered with the domain registrar and the entry is maintained by the Internet Root-Servers or Country Level Root-Servers.Whenever a server is queried, if doesn’t have the answer, the root servers are contacted.

22. The root servers refer to the DNS server for that domain (in case the domain is a top level domain) or the Country Root Server (in case the domain is country level domain).

24. Port No.: 53Soft wares : bind bind-utils caching-nameserverConfiguration steps of D.N.S.:First: Install the soft wares which is used in D.N.S.

25. bind-utils is already installedyum install bind

26. yum install caching-nameserverSecond:Open the configuration file /etc/named.conf and do the entry following:

27. Third:Go to /var/named

28. command cd /var/named

29. Copy the localhost.zone file into the forward file

30. command cp localhost.zone forward

31. Copy the named.local file into the reverse file

32. command cp named.local reverseChange group of both forward and reverse file:

33. chgrp named forward

34. chgrp named reverse

35. Open the forward , reverse and resolve.conf files and fills the following entry

38. Fourth: Starts the following services Comm. Service named start Permanently server on Comm. chkconfig named on Fifth: Lookup the server: comm. nslookup address (forward) nslookup ip address (reverse)

39. Lookup of www.gecj.ac.inReverse lookup of 172.24.0.254

40. Look up of kuldeep.gecj.ac.inReverse lookup of 172.24.0.254