1.安装wget
yum install -y wget
[vagrant@localhost ~]$ yum install -y wget
Failed to set locale, defaulting to C
Loaded plugins: fastestmirror
Determining fastest mirrors
* base: mirrors.aliyun.com
* extras: mirrors.aliyun.com
* updates: mirrors.aliyun.com
base | 3.6 kB 00:00:00
extras | 3.4 kB 00:00:00
updates | 3.4 kB 00:00:00
(1/4): extras/7/x86_64/primary_db | 215 kB 00:00:00
(2/4): base/7/x86_64/group_gz | 166 kB 00:00:02
(3/4): base/7/x86_64/primary_db | 6.0 MB 00:00:11
(4/4): updates/7/x86_64/primary_db | 7.4 MB 00:00:12
Resolving Dependencies
--> Running transaction check
---> Package wget.x86_64 0:1.14-18.el7_6.1 will be installed
--> Finished Dependency Resolution
Dependencies Resolved
=================================================================================================================
Package Arch Version Repository Size
=================================================================================================================
Installing:
wget x86_64 1.14-18.el7_6.1 updates 547 k
Transaction Summary
=================================================================================================================
Install 1 Package
Total download size: 547 k
Installed size: 2.0 M
Downloading packages:
warning: /var/cache/yum/x86_64/7/updates/packages/wget-1.14-18.el7_6.1.x86_64.rpm: Header V3 RSA/SHA256 Signature, key ID f4a80eb5: NOKEY
Public key for wget-1.14-18.el7_6.1.x86_64.rpm is not installed
wget-1.14-18.el7_6.1.x86_64.rpm | 547 kB 00:00:00
Retrieving key from file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-7
Importing GPG key 0xF4A80EB5:
Userid : "CentOS-7 Key (CentOS 7 Official Signing Key) <security@centos.org>"
Fingerprint: 6341 ab27 53d7 8a78 a7c2 7bb1 24c6 a8a7 f4a8 0eb5
Package : centos-release-7-5.1804.el7.centos.x86_64 (@anaconda)
From : /etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-7
Running transaction check
Running transaction test
Transaction test succeeded
Running transaction
Installing : wget-1.14-18.el7_6.1.x86_64 1/1
Verifying : wget-1.14-18.el7_6.1.x86_64 1/1
Installed:
wget.x86_64 0:1.14-18.el7_6.1
Complete!
2.备份
==mv /etc/yum.repos.d/CentOS-Base.repo /etc/yum.repos.d/CentOS-Base.repo.backup ==
[root@localhost vagrant]# mv /etc/yum.repos.d/CentOS-Base.repo /etc/yum.repos.d/CentOS-Base.repo.backup
查询国内镜像源
打开阿里镜像 http://mirrors.aliyun.com/
下载CentOS-Base.repo到/etc/yum.repos.d/
wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-7.repo
[root@localhost yum.repos.d]# wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-7.repo
--2019-08-29 08:31:52-- http://mirrors.aliyun.com/repo/Centos-7.repo
Resolving mirrors.aliyun.com (mirrors.aliyun.com)... 114.80.24.201, 114.80.24.196, 114.80.24.199, ...
Connecting to mirrors.aliyun.com (mirrors.aliyun.com)|114.80.24.201|:80... connected.
HTTP request sent, awaiting response... 200 OK
Length: 2523 (2.5K) [application/octet-stream]
Saving to: '/etc/yum.repos.d/CentOS-Base.repo'
100%[=======================================================================>] 2,523 --.-K/s in 0s
2019-08-29 08:31:54 (121 MB/s) - '/etc/yum.repos.d/CentOS-Base.repo' saved [2523/2523]
清除缓存
yum clean all
[root@localhost yum.repos.d]# yum clean all
Failed to set locale, defaulting to C
Loaded plugins: fastestmirror
Cleaning repos: base extras updates
Cleaning up everything
Maybe you want: rm -rf /var/cache/yum, to also free up space taken by orphaned data from disabled or removed repos
Cleaning up list of fastest mirrors
生存缓存
yum makecache
[root@localhost yum.repos.d]# yum makecache
Failed to set locale, defaulting to C
Loaded plugins: fastestmirror
Determining fastest mirrors
* base: mirrors.aliyun.com
* extras: mirrors.aliyun.com
* updates: mirrors.aliyun.com
http://mirrors.aliyuncs.com/centos/7/os/x86_64/repodata/repomd.xml: [Errno 12] Timeout on http://mirrors.aliyuncs.com/centos/7/os/x86_64/repodata/repomd.xml: (28, 'Connection timed out after 30003 milliseconds')
Trying other mirror.
http://mirrors.cloud.aliyuncs.com/centos/7/os/x86_64/repodata/repomd.xml: [Errno 14] curl#6 - "Could not resolve host: mirrors.cloud.aliyuncs.com; Unknown error"
Trying other mirror.
base | 3.6 kB 00:00:00
extras | 3.4 kB 00:00:00
updates | 3.4 kB 00:00:00
(1/12): base/7/x86_64/group_gz | 166 kB 00:00:00
(2/12): base/7/x86_64/primary_db | 6.0 MB 00:00:10
(3/12): extras/7/x86_64/prestodelta | 73 kB 00:00:00
(4/12): extras/7/x86_64/filelists_db | 249 kB 00:00:00
(5/12): extras/7/x86_64/primary_db | 215 kB 00:00:00
(6/12): extras/7/x86_64/other_db | 131 kB 00:00:00
(7/12): base/7/x86_64/filelists_db | 7.1 MB 00:00:13
(8/12): updates/7/x86_64/prestodelta | 945 kB 00:00:02
(9/12): base/7/x86_64/other_db | 2.6 MB 00:00:06
(10/12): updates/7/x86_64/filelists_db | 5.2 MB 00:00:14
(11/12): updates/7/x86_64/other_db | 764 kB 00:00:01
(12/12): updates/7/x86_64/primary_db | 7.4 MB 00:00:14
Metadata Cache Created
来源:https://blog.csdn.net/qq_15722433/article/details/100141041