RPM Package Management

TARGETS

è Installation , Upgration and remove RPM (red hat packet management)

è Installation , Upgration and remove YUM

è Management of  RPM & YUM packets

RPM PACKAGE  MANAGEMENT

The main RPM components are

            Local database, rpm and related executables, rpm frontends such as yum, package files.

Local database:-

            The local RPM database is maintained in /var/lib/rpm. The database stores information about installed packages such file attributes and package prerequisites.

RPM and related executables:-

            Software to be installed using rpm is distributed through rpm package files. In general the basic syntax for rpm packages are

                                           softwarepackage.rpm

rpm is a backend for other programs such as yum or system-config-packages.

THE PRIMARY FUNCTIONS IN RPM’s:-

            Install, upgrade, remove, query, verify.

Install:

For installing new rpm into your system use the below command:

    Syntax:             rpm -ivh package_name.rpm

          EX:             rpm –ivh zip-2.3-8.i386.rpm

Upgrade:

For updating an existing rpm into your system use the below command:

    Syntax:            rpm  -Uvh   package_name.rpm

          EX:      rpm  -Uvh   zip-2.3-8.i386.rpm

Remove:        

For removing an existing rpm into your system use the below command:

     Syntax:            rpm  -e  package_name

           EX:            rpm  -ivh  package_name

Verify:

   Used to check the package is installed or not.

      Syntax:          rpm  -q  package_name

                  EX:          rpm  –q zip-2.3-8.i386.rpm

Query:

   Used to check the all installed packages.

       Syntax:           rpm -qa 

                   EX:           rpm –qa                                             

RPM VERIFICATION

Verification of an installed packages compares like file size, permission , owner , group , MD5 checksum, and modification time against the RPM database

The basic RPM verification options are

 --To verify the installed zip rpm against the RPM database

         Syntax:         rpm  -V  packagename

               EX:         rpm  -V  zip

--To verify all installed RPMS against the RPM database

  Syntax:          rpm  -Va

--To verify the installed zip package against zip package file

  Syntax:          rpm  -Vp  package_name.rpm

        EX:          rpm  -Vp zip-2.3-8.i386.rpm

YUM (YELLOW DOG UPDATE, MODIFIED)

To solve the problem of dependency resolution and package location ,we have YUM. The yum application can call upon several repositories for dependency resolution, fetch the RPMs, and install the needed packages. The main disadvantage of rpm command is it requires the dependencies to be resolved manual it cannot call upon repositories automatically.

The Primary Functions in YUM’s:-

           Install, update, and remove.

Install:

For installing new rpm into your system use the below command:

   Syntax:         yum  install  packagename

         EX:         yum  install  media player

Update:

For updating an existing rpm into your system use the below command:

    Syntax:        yum update  packagename

          EX:        yum update  media player

Remove:

For removing an existing rpm into your system use the below command

    Syntax:        yum   remove  packagename

          EX:        yum   remove  media player

The primary function for searching   yum packages/files :

      Search, list, info, what provides.

--To search a installed package

                Syntax:          yum search  packagename

                     EX:           yum search   firefox   

--To know the all installed packages

          Syntax:                    yum  list

--To search the package database for a package & displays the info. about it

          Syntax:          yum   info firefox

YUM Installation on Server Side

Step by Step Procedure for Server Side:

1. cp all rpms to /var/ftp/pub/rpm

2. Install rpm -ivh createrepo-0.4.4-2.fc6.noarch.rpm

3. Execute repository creating command:

                         #createrepo /var/ftp/pub/rpm/

        Takes Some times for creating repository

YUM Installation on Client Side

1. vim /etc/yum.repos.d/open.repo           (Any Name with .repo for your reference only)

        name=opensourcerepo                                             # Any Friendly name can be given

        baseurl=ftp://123.236.153.248/pub/rpm                # Set the Server ipaddress with your                                                                                                                       repository path

        gpgcheck=1      # Key Verification Enabled

        enabled=1       # yum Enabled for this client

        gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-redhat-release

Examples on YUM:

1. To know whether the package is installed properly or not

#[root@ns1 ~]# yum list openldap

Loading "installonlyn" plugin

Loading "rhnplugin" plugin

RHN support will be disabled.

Setting up repositories

Reading repository metadata in from local files

Installed Packages

openldap.i386                            2.3.27-5               installed     

2. To remove any installed package

#[root@ns1 ~]# yum remove openssh

Loading "installonlyn" plugin

Loading "rhnplugin" plugin

This system is not registered with RHN.

RHN support will be disabled.

Setting up Remove Process

Resolving Dependencies

            --> Populating transaction set with selected packages. Please wait.

            --> Package openssh.i386 0:4.3p2-16.el5 set to be erased

            --> Running transaction check

            Setting up repositories

            Reading repository metadata in from local files

            --> Processing Dependency: openssh = 4.3p2-16.el5 for package: openssh-server

            --> Processing Dependency: openssh = 4.3p2-16.el5 for package: openssh-askpass

            --> Processing Dependency: openssh = 4.3p2-16.el5 for package: openssh-clients

            --> Restarting Dependency Resolution with new changes.

            --> Populating transaction set with selected packages. Please wait.

            --> Package openssh-clients.i386 0:4.3p2-16.el5 set to be erased

            --> Package openssh-server.i386 0:4.3p2-16.el5 set to be erased

            --> Package openssh-askpass.i386 0:4.3p2-16.el5 set to be erased

            -->Running transaction check

            Dependencies Resolved

===============================================================

 Package                 Arch       Version          Repository        Size

===============================================================

Removing:

 openssh                 i386       4.3p2-16.el5     installed           714 k

Removing for dependencies:

 openssh-askpass     i386       4.3p2-16.el5     installed         9.8 k

 openssh-clients       i386       4.3p2-16.el5     installed         811 k

 openssh-server        i386       4.3p2-16.el5     installed         447 k

Transaction Summary

===============================================================

Install      0 Package(s)

Update       0 Package(s)

Remove       4 Package(s)

Is this ok [y/N]: y     # Click "y" to remove

Downloading Packages:

Running Transaction Test

Finished Transaction Test

Transaction Test Succeeded

Running Transaction

  Removing  : openssh-clients              ######################### [1/4]

  Removing  : openssh                          ######################### [2/4]

  Removing  : openssh-server               ######################### [3/4]

  Removing  : openssh-askpass             ######################### [4/4]

Removed: openssh.i386 0:4.3p2-16.el5

Dependency Removed: openssh-askpass.i386 0:4.3p2-16.el5 openssh-clients.i386 0:4.3p2-16.el5 openssh-server.i386 0:4.3p2-16.el5

Complete!