1、卸载原有的yum
1 [app@localhost ~]$ su - root 2 Password: 3 Last login: Wed Apr 24 17:18:09 CST 2019 on pts/1 4 [root@localhost ~]# cd /etc/yum.repos.d/ 5 [root@localhost yum.repos.d]# ll 6 total 4 7 -rw-r--r--. 1 root root 358 Apr 24 06:16 redhat.repo 8 [root@localhost yum.repos.d]# tail redhat.repo 9 # 10 # Certificate-Based Repositories 11 # Managed by (rhsm) subscription-manager 12 # 13 # *** This file is auto-generated. Changes made here will be over-written. *** 14 # *** Use "subscription-manager repo-override --help" if you wish to make changes. *** 15 # 16 # If this file is empty and this system is subscribed consider 17 # a "yum repolist" to refresh available repos 18 # 19 [root@localhost yum.repos.d]# yum repolist 20 Loaded plugins: langpacks, product-id, search-disabled-repos, subscription-manager 21 This system is not registered with an entitlement server. You can use subscription-manager to register. 22 repolist: 0 23 [root@localhost yum.repos.d]# rpm -qa | grep yum 24 yum-utils-1.1.31-50.el7.noarch 25 yum-metadata-parser-1.1.4-10.el7.x86_64 26 yum-3.4.3-161.el7.noarch 27 PackageKit-yum-1.1.10-1.el7.x86_64 28 yum-rhn-plugin-2.0.1-10.el7.noarch 29 yum-langpacks-0.4.2-7.el7.noarch 30 [root@localhost yum.repos.d]# rpm -qa|grep yum|xargs rpm -e --nodeps
2、联网下载yum
wget https://mirrors.aliyun.com/centos/7/os/x86_64/Packages/yum-utils-1.1.31-50.el7.noarch.rpm wget https://mirrors.aliyun.com/centos/7/os/x86_64/Packages/yum-metadata-parser-1.1.4-10.el7.x86_64.rpm wget https://mirrors.aliyun.com/centos/7/os/x86_64/Packages/yum-3.4.3-161.el7.centos.noarch.rpm wget https://mirrors.aliyun.com/centos/7/os/x86_64/Packages/PackageKit-yum-1.1.10-1.el7.centos.x86_64.rpm wget https://mirrors.aliyun.com/centos/7/os/x86_64/Packages/yum-rhn-plugin-2.0.1-10.el7.noarch.rpm wget https://mirrors.aliyun.com/centos/7/os/x86_64/Packages/yum-langpacks-0.4.2-7.el7.noarch.rpm wget https://mirrors.aliyun.com/centos/7/os/x86_64/Packages/yum-plugin-fastestmirror-1.1.31-50.el7.noarch.rpm wget https://mirrors.aliyun.com/centos/7/os/x86_64/Packages/PackageKit-1.1.10-1.el7.centos.x86_64.rpm wget https://mirrors.aliyun.com/centos/7/os/x86_64/Packages/PackageKit-glib-1.1.10-1.el7.centos.x86_64.rpm
3、安装yum
[root@localhost yum]# rpm -ivh yum-* warning: yum-3.4.3-161.el7.centos.noarch.rpm: Header V3 RSA/SHA256 Signature, key ID f4a80eb5: NOKEY Preparing... ################################# [100%] Updating / installing... 1:yum-metadata-parser-1.1.4-10.el7 ################################# [ 17%] 2:yum-plugin-fastestmirror-1.1.31-5################################# [ 33%] 3:yum-3.4.3-161.el7.centos ################################# [ 50%] 4:yum-langpacks-0.4.2-7.el7 ################################# [ 67%] 5:yum-rhn-plugin-2.0.1-10.el7 ################################# [ 83%] 6:yum-utils-1.1.31-50.el7 ################################# [100%] [root@localhost yum]#
4、获取阿里云repo
[root@localhost yum]# cd /etc/yum.repos.d/ [root@localhost yum.repos.d]# ll total 4 -rw-r--r--. 1 root root 358 Apr 24 06:16 redhat.repo [root@localhost yum.repos.d]# wget http://mirrors.aliyun.com/repo/Centos-7.repo --2019-04-25 18:58:57-- http://mirrors.aliyun.com/repo/Centos-7.repo Resolving mirrors.aliyun.com (mirrors.aliyun.com)... 27.221.93.99, 27.221.93.94, 27.221.56.136, ... Connecting to mirrors.aliyun.com (mirrors.aliyun.com)|27.221.93.99|:80... connected. HTTP request sent, awaiting response... 200 OK Length: 2523 (2.5K) [application/octet-stream] Saving to: ‘Centos-7.repo’ 100%[==================================================================================================>] 2,523 --.-K/s in 0s 2019-04-25 18:58:57 (8.27 MB/s) - ‘Centos-7.repo’ saved [2523/2523] [root@localhost yum.repos.d]# ls Centos-7.repo redhat.repo [root@localhost yum.repos.d]#
5、替换repo里的版本号
[root@localhost yum.repos.d]# sed -i 's/$releasever/7/g' /etc/yum.repos.d/Centos-7.repo [root@localhost yum.repos.d]#
6、清理，重建缓存，查看repolist
[root@localhost yum.repos.d]# yum clean all Loaded plugins: fastestmirror, langpacks, product-id, search-disabled-repos, subscription-manager This system is not registered with an entitlement server. You can use subscription-manager to register. Cleaning repos: base extras updates Cleaning up list of fastest mirrors [root@localhost yum.repos.d]# yum makecache Loaded plugins: fastestmirror, langpacks, product-id, search-disabled-repos, subscription-manager This system is not registered with an entitlement server. You can use subscription-manager to register. 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 (1/12): base/x86_64/group_gz | 166 kB 00:00:00 (2/12): extras/x86_64/prestodelta | 52 kB 00:00:00 (3/12): base/x86_64/other_db | 2.6 MB 00:00:01 (4/12): extras/x86_64/primary_db | 188 kB 00:00:01 (5/12): extras/x86_64/filelists_db | 236 kB 00:00:01 (6/12): base/x86_64/filelists_db | 7.1 MB 00:00:05 (7/12): updates/x86_64/prestodelta | 511 kB 00:00:03 (8/12): updates/x86_64/other_db | 488 kB 00:00:00 (9/12): updates/x86_64/filelists_db | 3.0 MB 00:00:05 updates/x86_64/primary_db FAILED ========- ] 1.2 MB/s | 14 MB 00:00:07 ETA http://mirrors.cloud.aliyuncs.com/centos/7/updates/x86_64/repodata/77e1064f4695d093417e973b314fbb8199458df1af4428ee452be30159ee5598-primary.sqlite.bz2: [Errno -1] Metadata file does not match checksum Trying other mirror. (10/12): updates/x86_64/primary_db | 3.4 MB 00:00:01 base/x86_64/primary_db FAILED http://mirrors.cloud.aliyuncs.com/centos/7/os/x86_64/repodata/6614b3605d961a4aaec45d74ac4e5e713e517debb3ee454a1c91097955780697-primary.sqlite.bz2: [Errno 14] curl#7 - "Failed connect to mirrors.cloud.aliyuncs.com:80; Connection refused" Trying other mirror. extras/x86_64/other_db FAILED ======================= ] 600 kB/s | 22 MB 00:00:03 ETA http://mirrors.cloud.aliyuncs.com/centos/7/extras/x86_64/repodata/e3fc99b365562ee4f9dbd898f8acbbad55e2a5e5cf787dab83017026971ccbc9-other.sqlite.bz2: [Errno 14] curl#7 - "Failed connect to mirrors.cloud.aliyuncs.com:80; Connection refused" Trying other mirror. (11/12): extras/x86_64/other_db | 120 kB 00:00:00 (12/12): base/x86_64/primary_db | 6.0 MB 00:00:02 Metadata Cache Created [root@localhost yum.repos.d]# yum repolist Loaded plugins: fastestmirror, langpacks, product-id, search-disabled-repos, subscription-manager This system is not registered with an entitlement server. You can use subscription-manager to register. Loading mirror speeds from cached hostfile * base: mirrors.aliyun.com * extras: mirrors.aliyun.com * updates: mirrors.aliyun.com repo id repo name status base/x86_64 CentOS-7 - Base - mirrors.aliyun.com 10,019 extras/x86_64 CentOS-7 - Extras - mirrors.aliyun.com 386 updates/x86_64 CentOS-7 - Updates - mirrors.aliyun.com 1,580 repolist: 11,985 [root@localhost yum.repos.d]#