Shulou(Shulou.com)06/03 Report--

Centos7 configure yum software repository

Private network yum repository: local yum repository (that is, CD-ROM image comes with its own software as yum software repository)

Local area network yum warehouse (ftp service implementation)

Public network yum warehouse (implemented through http)

-use the yum repository to install the service

Yum clean all clears all warehouse caches

Yum makecache rebuilding Warehouse

Yum repolist all lists all warehouses

Yum provides searches for software packages based on specific criteria

Yum whatprovides * / filename to see which package the file belongs to

Yum list lists all software packages in the warehouse

Yum info View package Information

If yum install is installed with-y, there is no need to manually confirm the installation.

Yum reinstall reinstall the package

Yum remove uninstall

Yum update updates (networking required)

Yum check-update checks for updatable software packages (requires networking)

Yum grouplist View Group Service

Yum groupinstall installation Group Service

-- Local yum warehouse--

Cd / etc/yum.repos.d/ go to the configuration directory of the yum repository

Mkdir bak creates a directory to place the default yum settings for centos7.4

Mv C * bak/ moves all files that start with C to the bak directory.

Vi local.repo / / must be followed by .repo, because yum only recognizes files that end in .repo.

[local] / / unique identification of the warehouse to avoid conflicts with other warehouses

Name=local / / description of the current warehouse name

Baseurl= file:///mnt / / the path to the warehouse, that is, the url access path, which can point to multiple backup

Enabled=1 / / 1, indicates that the warehouse is used; 0, indicates that the warehouse is not used

Gpgcheck=0 / / 0, do not validate the package. 1, verify

: wq-Save exit

Df-hT to see if the CD is mounted

-check to see if the CD is connected. If no connection is returned, the CD cannot be found.

Temporary mount

Mount / dev/cdrom / mnt manually mount the CD temporarily, but it will be gone after shutdown and reboot.

Vi / etc/fstab

Permanent mount

/ dev/cdrom / mnt iso9660 defaults 0 0

Mount-a-check the grammar

Test:

1. Install a httpd service using local yum, as shown in the following picture

Above is the local yum warehouse.

-build Aliyun yum warehouse-only if you can access the Internet.

Tip: first of all, your virtual machine has to be able to access the Internet, which is a necessary condition.

Cd / etc/yum.repos.d/ go to the configuration directory of the yum repository

Vi local.repo-modify the corresponding content

1. Aliyun yum warehouse

[Ali]

Name=CentOS-$releasever-Base

Baseurl= http://mirrors.aliyun.com/centos/$releasever/os/$basearch/

Gpgcheck=1

Gpgkey= http://mirrors.aliyun.com/centos/RPM-GPG-KEY-CentOS-7

2. China University of Science and Technology

[mariadb]

Name = MariaDB

Baseurl = https://mirrors.ustc.edu.cn/mariadb/yum/10.3/centos74-amd64/

Gpgcheck=1

Gpgkey= https://mirrors.ustc.edu.cn/mariadb/yum/RPM-GPG-KEY-MariaDB

Local and Aliyun yum repositories, giving priority to the latest services

Test:

Install a ftp to see where its software package comes from

The above is the network yum warehouse.

-- LAN yum Warehouse (ftp service implementation)

I.

Local area network yum warehouse is based on local yum warehouse.

(192.168.80.100) Operation: df-hT-- check to see if the CD is mounted because we are now using the ftp service, so when we mount the CD, mount it to / var/ftp/pubmount / dev/cdrom / var/ftp/pub/-- temporarily mount

Vi / etc/fstab

/ dev/cdrom / mnt iso9660 defaults 0 0-permanent mount

(192.168.80.101) Operation

Vi / etc/yum.repos.d/aa.repo

[aa]

Name=aa

Baseurl= ftp://192.168.80.100/pub

Enabled=1

Gpgcheck=0

: wq-- Save exit

Yum install httpd-y

The above is the LAN yum warehouse.

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