Advanced management of linux yum

First, the deployment of private repo source

1, download the official repository needs:

rsync -avrt --delete rsync://mirrors.ustc.edu.cn/centos/7/cloud/x86_64/openstack-pike /export/download/cloud/

2. Install the package:

yum install yum-utils createrepo nginx -y

3. Create yum source repository:

cd /export/download/ && createrepo cloud

4, create and edit the nginx configuration file:

/etc/nginx/conf.d/ Vim repo.conf 
#repo the conf 
Server { 
the listen 8080 ; 
######## from a domain ####### 
server_name open.yunwei.edu; 
access_log / var / log / Nginx / repo.log; 
the error_log / var / log / Nginx / repoerr.log; 
LOCATION / { 
the root / Export / downloads / Cloud; 
autoindex ON; 
        } 
}

5, open the browser, to verify:

http://ip:8080

Second, ISO image build private source repository yum

In general there is no optical drive on the server, we need to produce their own local ISO image a warehouse source:

By local ISO image, Copy to a Linux system directory, the pseudo file system is mounted, the following command:

Mount: Mount -o -t iso9660 CentOS- Loop 7.3 -x86_64-DVD- 1611 .iso directory names 
     such as: Mount -o -t iso9660 CentOS- Loop 7.3 -x86_64-DVD- 1611 .iso / mnt 

unload mount: 
     for example, : umount / mnt

1, in /etc/yum.repos.d/ catalog, establish repo source file

vim .repo name 
[name] 
name = Comment 
baseurl = file: // path mount 
Enabled. 1 = 
gpgcheck = 0

Note: gpg keys detection support; 0 is no and 1 is allowed;

　　Gpg keys to specify the path and name: gpgcheck = file: /// etc / pki / rpm-gpg / RPM-GPG-Test

2, clear the cache

yum clean all

3, establish metadata cache

yum makecache

4, installation of software testing

yum install tree -y

Third, the network source cache settings

[ren11 the root @ ~] # Vim / etc / yum .conf 
[main] 
cacheDir = / var / Cache / yum / basearch $ / $ the releasever 
keepcache = 0            # 1 is turned on to buffer

Four, yum commonly used commands

yum repolist All software lists all the local pool information
 yum  Groups List View package group (group list) 

yum  install PACKAGE1 install the specified installation package
 yum  Groups  install "GROUPS1" to install the specified program group
 yum Update Update All
 yum Update PACKAGE1 update the specified packages 

yum the Remove PACKAGE1 delete the specified package
 yum  groups the Remove "gROUP1" Remove programs group group1 

yum -y install  yum -utils *       install yum plugin 
yumdownloader download only the package name is not installed

yum history History feature rollback, the most important thing is to rely on the joint be deleted

yum history View History 
yum history list Name / ID search in the history of a package 
yum history undo ID rollback

Five, Linux character and graphical interface to mount the switch of the two interfaces

1, see the yum software charter

yum groups list

2, select the server installed with the GUI

yum groups install "Server with a GUI"

3, is switched to the character interface graphical interface

Meet switch to a graphical character: startx 
Crt inside exit graphic: Ctrl + C

4, the current configuration of the interface get started

systemctl get-default

5, reboot into the next set of interface: Character / Graphics

[root @ ren11 ~] # systemctl set-default multi-user.target next boot is set to launch the character of 
[root @ ren11 ~] # systemctl set-default graphical.target set to start next boot into a graphical 
[root @ ren11 ~] # reboot reboot