Detailed explanation of yum commands and YumSource in Linux

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= = Base Source =

Base/Extras/Updates: default (foreign source)

[root@tianyun ~] # ls / etc/yum.repos.d/

CentOS-Base.repo CentOS-fasttrack.repo CentOS-Vault.repo

CentOS-CR.repo CentOS-Media.repo

CentOS-Debuginfo.repo CentOS-Sources.repo

[root@tianyun ~] # yum repolist

Repo id repo name status

Base/7/x86_64 CentOS-7-Base 9363

Extras/7/x86_64 CentOS-7-Extras 449

Updates/7/x86_64 CentOS-7-Updates 2146

Repolist: 11958

/ etc/yum.re

Aliyun:

[root@tianyun ~] # mv / etc/yum.repos.d/CentOS-Base.repo / etc/yum.repos.d/CentOS-Base.repo.backup

[root@tianyun] # curl-o / etc/yum.repos.d/CentOS-Base.repo / / mirrors.aliyun.com/repo/Centos-7.repo

[root@tianyun ~] # yum clean all / / clear the old YUM database information

[root@tianyun ~] # yum makecache / / Update new YUM warehouse information

Yum-y install lftp

163:

[root@tianyun ~] # mv / etc/yum.repos.d/CentOS-Base.repo / etc/yum.repos.d/CentOS-Base.repo.backup

[root@tianyun] # curl-o / etc/yum.repos.d/CentOS-Base.repo http://mirrors.163.com/.help/CentOS7-Base-163.repo

EPEL:

[root@tianyun] # yum-y install epel-release (foreign source)

Or

[root@tianyun ~] # mv / etc/yum.repos.d/epel.repo / etc/yum.repos.d/epel.repo.backup

[root@tianyun ~] # wget-O / etc/yum.repos.d/epel.repo http://mirrors.aliyun.com/repo/epel-7.repo

= = Software official source =

Nginx:

Nginx.org

[root@tianyun ~] # vim / etc/yum.repos.d/nginx.repo

[nginx]

Name=nginx repo

Baseurl= http://nginx.org/packages/centos/7/$basearch/

Gpgcheck=0

Enabled=1

MySQL:

Yum-y install https://dev.mysql.com/get/mysql57-community-release-el7-9.noarch.rpm

Zabbix:

# rpm-ivh http://repo.zabbix.com/zabbix/3.2/rhel/7/x86_64/zabbix-release-3.2-1.el7.noarch.rpm

Openstack:

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