yum Profile
Yum (called the Yellow dog Updater, Modified) is a front end package manager Shell Fedora and RedHat and CentOS in. RPM-based package management, can automatically download from the specified server RPM package and installed, you can automatically handle dependencies, and install all packages depending on, again and again without the cumbersome download and installation.
By means of YUM repositories, you can complete the installation, uninstallation, and other tasks automatically upgrade the rpm package that can automatically find and resolve dependencies between the rpm package without the need for administrators to manually install each rpm package, the administrator more comfortable when maintaining a large number of Linux servers. In particular those with a large number of Linux hosts on the local network, to build a source server can greatly ease software installation, upgrades, etc. dependence on lnterner of.
yum server set up
yum server Overview
yum repositories usually by means of HTTP or FTP protocol to publish, so you can face all the clients in the network to provide software source service. In order to facilitate the client queries the package, get dependencies and other information required to provide data warehouse (Repodata) in the depot, which collects information on all head rpm package directory.
Preparation network installation source (server)
(1) preparing depot catalog
The root directory of the CD-ROM package CentOS6.5 copy of the first CD content to a local FTP server anonymous user access
[root@localhost ~]# cd /var/ftp/
[root@localhost ftp]# mkdir centos6
[root@localhost ftp]# cp -rf /media/CentOS_6.5_Final/* /var/ftp/centos6/ &
[1] 45717
[root@localhost ftp]# jobs
[1]+ Done cp -i -rf /media/CentOS_6.5_Final/* /var/ftp/centos6/
[Root @ localhost ksh] # cp /media/CentOS_6.5_Final/Packages/ksh-20120801-10.el6.x86_64.rpm / var / ftp / ksh /
[Root @ localhost ksh] # cp /media/CentOS_6.5_Final/Packages/mksh-39-7.el6_4.1.x86_64.rpm / var / ftp / ksh /
[root@localhost ksh]# ls
ksh-20120801-10.el6.x86_64.rpm mksh-39-7.el6_4.1.x86_64.rpm
No need to install the package installation createrepo
[root@localhost ksh]# yum -y install createrepo
[root@localhost ksh]# createrepo -v ./
Spawning worker 0 with 2 pkgs
Worker 0: reading ksh-20120801-10.el6.x86_64.rpm
Worker 0: reading mksh-39-7.el6_4.1.x86_64.rpm
Workers Finished
Gathering worker results
Saving Primary metadata
Saving file lists metadata
Saving other metadata
Generating sqlite DBs
Starting other db creation: Thu May 31 18:20:51 2018
Ending other db creation: Thu May 31 18:20:51 2018
Starting filelists db creation: Thu May 31 18:20:51 2018
Ending filelists db creation: Thu May 31 18:20:51 2018
Starting primary db creation: Thu May 31 18:20:51 2018
Ending primary db creation: Thu May 31 18:20:51 2018
Sqlite DBs complete
[root@localhost ksh]# ls
ksh-20120801-10.el6.x86_64.rpm mksh-39-7.el6_4.1.x86_64.rpm repodata
Install and start vsftpd service (see the FTP service content)
[root@localhost ksh]# service vsftpd restart
Close vsftpd: [OK]
As vsftpd start vsftpd: [OK]
[root@localhost ksh]# chkconfig vsftpd on
[root@localhost ksh]# chkconfig vsftpd --list
vsftpd 0: Close 1: Close 2: Enabled 3: Enable 4: Enable 5: 6 Enable: Off
Yum configuration software warehouse location (client side)
Typical warehouse configuration
YUM network source
[root@n2 ~]# cd /etc/yum.repos.d/
[root@n2 yum.repos.d]# ls
CentOS-Base.repo CentOS-Debuginfo.repo CentOS-Media.repo CentOS-Vault.repo
[root@n2 yum.repos.d]# mkdir bak
[root@n2 yum.repos.d]# mv *o ./bak/
[root@n2 yum.repos.d]# ls
behind
[root@n2 yum.repos.d]# vim amber.repo
[yum]
name=centos 6.5
baseurl=ftp://192.168.28.128/centos6/
gpgcheck=0
enabled=1
[ksh]
name=ksh
baseurl=ftp://192.168.28.128/ksh/
gpgcheck=0
enabled=1
~
[root@n2 ~]# yum -y clean all
Loaded plugins: fastestmirror, refresh-packagekit, security
Cleaning repos: ksh yum
Cleaning up Everything
Cleaning up list of fastest mirrors
[root@n2 ~]# yum makecache
Loaded plugins: fastestmirror, refresh-packagekit, security
Determining fastest mirrors
ksh | 2.9 kB 00:00
ksh/filelists_db | 1.1 kB 00:00
ksh/primary_db | 3.3 kB 00:00
ksh/other_db | 2.2 kB 00:00
yum | 4.0 kB 00:00
yum/group_gz | 220 kB 00:00
yum/filelists_db | 5.8 MB 00:00
yum/primary_db | 4.4 MB 00:00
yum/other_db | 2.7 MB 00:00
Metadata Cache Created
查看yum缓存是否生成
[root@n2 ~]# ls /var/cache/yum/x86_64/6/
base extras ksh timedhosts.txt updates yum
[root@n2 ~]# ls /var/cache/yum/x86_64/6/yum/
0dafccfdbf892f02acca8267ade4bdcee7280a682e65dc7e29145f3341fd7a8c-primary.sqlite
594d4bb4a79ed01d66635adbcf76c45ca4a85b30fc3e3c3c28316e64f0a83f21-filelists.sqlite
ca525c73086186bfcb81ad9edd45796026dac7e4e50524e0f2daf901532aaf66-c6-x86_64-comps.xml.gz
cachecookie
fdd542ef36b0cde54ee0521fae90b98911db06483163aa1c049995b6d109349b-other.sqlite
gen
packages
repomd.xml
[root@n2 ~]# ls /var/cache/yum/x86_64/6/ksh
046862454d1aa798eb72c70668a54e25905c276a613fd0cc15abdf13fc20d6de-filelists.sqlite
38c945c0799d8cfb481c6145b8c227b1f2ef91100f3b7bc8cad97645594f4643-primary.sqlite
cachecookie
fe7ae063ad2b6e2c4bcdbc676581ac33eb74c0645132fb0c4bac78f24300ffb5-other.sqlite
packages
repomd.xml
测试
[root@n2 ~]# yum -y install dhcp
Loaded plugins: fastestmirror, refresh-packagekit, security
Loading mirror speeds from cached hostfile
Setting up Install Process
Resolving Dependencies
--> Running transaction check
---> Package dhcp.x86_64 12:4.1.1-38.P1.el6.centos will be installed
--> Finished Dependency Resolution
Dependencies Resolved
========================================================================================================================================================
Package Arch Version Repository Size
========================================================================================================================================================
Installing:
dhcp x86_64 12:4.1.1-38.P1.el6.centos yum 817 k
Transaction Summary
========================================================================================================================================================
Install 1 Package(s)
Total download size: 817 k
Installed size: 1.9 M
Downloading Packages:
dhcp-4.1.1-38.P1.el6.centos.x86_64.rpm | 817 kB 00:00
Running rpm_check_debug
Running Transaction Test
Transaction Test Succeeded
Running Transaction
Warning: RPMDB altered outside of yum.
Installing : 12:dhcp-4.1.1-38.P1.el6.centos.x86_64 1/1
Verifying : 12:dhcp-4.1.1-38.P1.el6.centos.x86_64 1/1
Installed:
dhcp.x86_64 12:4.1.1-38.P1.el6.centos
Complete!
注意;因为ksh包在光盘中存在，所以需先修改repo文件后重建yum缓存再进行安装测试，否则安装的是光盘中的包。