我有两台 CentOS 7.3 的服务器，但是
服务器1
[root@frontalb]# cat /etc/*release
CentOS Linux release 7.3.1611 (Core)
NAME="CentOS Linux"
VERSION="7 (Core)"
ID="centos"
ID_LIKE="rhel fedora"
VERSION_ID="7"
PRETTY_NAME="CentOS Linux 7 (Core)"
ANSI_COLOR="0;31"
CPE_NAME="cpe:/o:centos:centos:7"
HOME_URL="https://www.centos.org/"
BUG_REPORT_URL="https://bugs.centos.org/"
CENTOS_MANTISBT_PROJECT="CentOS-7"
CENTOS_MANTISBT_PROJECT_VERSION="7"
REDHAT_SUPPORT_PRODUCT="centos"
REDHAT_SUPPORT_PRODUCT_VERSION="7"
CentOS Linux release 7.3.1611 (Core)
CentOS Linux release 7.3.1611 (Core)
服务器2
[root@frontala]# cat /etc/*release
CentOS Linux release 7.3.1611 (Core)
NAME="CentOS Linux"
VERSION="7 (Core)"
ID="centos"
ID_LIKE="rhel fedora"
VERSION_ID="7"
PRETTY_NAME="CentOS Linux 7 (Core)"
ANSI_COLOR="0;31"
CPE_NAME="cpe:/o:centos:centos:7"
HOME_URL="https://www.centos.org/"
BUG_REPORT_URL="https://bugs.centos.org/"
CENTOS_MANTISBT_PROJECT="CentOS-7"
CENTOS_MANTISBT_PROJECT_VERSION="7"
REDHAT_SUPPORT_PRODUCT="centos"
REDHAT_SUPPORT_PRODUCT_VERSION="7"
CentOS Linux release 7.3.1611 (Core)
CentOS Linux release 7.3.1611 (Core)
当我检查 repolist Frontala 时，显示可用的软件包比 frontalb 少
[root@frontalb yum.repos.d]# yum clean all
Loaded plugins: fastestmirror
Cleaning repos: base epel extras puppetlabs-deps puppetlabs-products updates
Cleaning up everything
Cleaning up list of fastest mirrors
[root@frontalb yum.repos.d]# yum repolist
Loaded plugins: fastestmirror
base | 3.6 kB 00:00:00
epel/x86_64/metalink | 26 kB 00:00:00
epel | 4.3 kB 00:00:00
extras | 3.4 kB 00:00:00
puppetlabs-deps | 2.5 kB 00:00:00
puppetlabs-products | 2.5 kB 00:00:00
updates | 3.4 kB 00:00:00
(1/9): base/7/x86_64/group_gz | 155 kB 00:00:00
(2/9): epel/x86_64/group_gz | 170 kB 00:00:00
(3/9): base/7/x86_64/primary_db | 5.6 MB 00:00:00
(4/9): epel/x86_64/updateinfo | 793 kB 00:00:00
(5/9): extras/7/x86_64/primary_db | 151 kB 00:00:00
(6/9): puppetlabs-products/x86_64/primary_db | 69 kB 00:00:00
(7/9): puppetlabs-deps/x86_64/primary_db | 8.4 kB 00:00:00
(8/9): epel/x86_64/primary_db | 4.7 MB 00:00:00
(9/9): updates/7/x86_64/primary_db | 4.8 MB 00:00:00
Determining fastest mirrors
* base: ftp.heanet.ie
* epel: s3-mirror-eu-west-1.fedoraproject.org
* extras: ftp.heanet.ie
* updates: ftp.heanet.ie
repo id repo name status
base/7/x86_64 CentOS-7 - Base 9,363
epel/x86_64 Extra Packages for Enterprise Linux 7 - x86_64 11,629
extras/7/x86_64 CentOS-7 - Extras 337
puppetlabs-deps/x86_64 Puppet Labs Dependencies El 7 - x86_64 17
puppetlabs-products/x86_64 Puppet Labs Products El 7 - x86_64 225
updates/7/x86_64 CentOS-7 - Updates 1,585
repolist: 23,156
在frontala repolist上只有23,001
[root@frontala yum.repos.d]# yum clean all
Loaded plugins: fastestmirror
Cleaning repos: base epel extras puppetlabs-deps puppetlabs-products updates
Cleaning up everything
Cleaning up list of fastest mirrors
[root@frontala yum.repos.d]# yum repolist
Loaded plugins: fastestmirror
base | 3.6 kB 00:00:00
epel/x86_64/metalink | 26 kB 00:00:00
epel | 4.3 kB 00:00:00
extras | 3.4 kB 00:00:00
puppetlabs-deps | 2.5 kB 00:00:00
puppetlabs-products | 2.5 kB 00:00:00
updates | 3.4 kB 00:00:00
(1/9): base/7/x86_64/group_gz | 155 kB 00:00:00
(2/9): epel/x86_64/group_gz | 170 kB 00:00:00
(3/9): epel/x86_64/updateinfo | 793 kB 00:00:00
(4/9): extras/7/x86_64/primary_db | 151 kB 00:00:00
(5/9): puppetlabs-products/x86_64/primary_db | 69 kB 00:00:00
(6/9): puppetlabs-deps/x86_64/primary_db | 8.4 kB 00:00:00
(7/9): base/7/x86_64/primary_db | 5.6 MB 00:00:00
(8/9): updates/7/x86_64/primary_db | 4.8 MB 00:00:00
(9/9): epel/x86_64/primary_db | 4.7 MB 00:00:00
Determining fastest mirrors
* base: ftp.heanet.ie
* epel: s3-mirror-eu-west-1.fedoraproject.org
* extras: ftp.heanet.ie
* updates: ftp.heanet.ie
repo id repo name status
base/7/x86_64 CentOS-7 - Base 9,313+50
epel/x86_64 Extra Packages for Enterprise Linux 7 - x86_64 11,624+5
extras/7/x86_64 CentOS-7 - Extras 337
puppetlabs-deps/x86_64 Puppet Labs Dependencies El 7 - x86_64 17
puppetlabs-products/x86_64 Puppet Labs Products El 7 - x86_64 225
updates/7/x86_64 CentOS-7 - Updates 1,485+100
repolist: 23,001
例如，当我想要更新 java 时，我开始遇到问题，我只能在两台服务器之一中更新
弗龙塔拉
[root@frontala yum.repos.d]# yum info java-1.7.0-openjdk
Loaded plugins: fastestmirror
Loading mirror speeds from cached hostfile
* base: ftp.heanet.ie
* epel: s3-mirror-eu-west-1.fedoraproject.org
* extras: ftp.heanet.ie
* updates: ftp.heanet.ie
Installed Packages
Name : java-1.7.0-openjdk
Arch : x86_64
Epoch : 1
Version : 1.7.0.121
Release : 2.6.8.0.el7_3
Size : 549 k
Repo : installed
Summary : OpenJDK Runtime Environment
URL : http://openjdk.java.net/
License : ASL 1.1 and ASL 2.0 and GPL+ and GPLv2 and GPLv2 with exceptions and LGPL+ and LGPLv2 and MPLv1.0 and MPLv1.1 and Public Domain and W3C
Description : The OpenJDK runtime environment.
额叶
[root@cpe0012046-frontb yum.repos.d]# yum info java-1.7.0-openjdk
Loaded plugins: fastestmirror
Loading mirror speeds from cached hostfile
* base: ftp.heanet.ie
* epel: s3-mirror-eu-west-1.fedoraproject.org
* extras: ftp.heanet.ie
* updates: ftp.heanet.ie
Installed Packages
Name : java-1.7.0-openjdk
Arch : x86_64
Epoch : 1
Version : 1.7.0.131
Release : 2.6.9.0.el7_3
Size : 549 k
Repo : installed
From repo : updates
Summary : OpenJDK Runtime Environment
URL : http://openjdk.java.net/
License : ASL 1.1 and ASL 2.0 and GPL+ and GPLv2 and GPLv2 with exceptions and LGPL+ and LGPLv2 and MPLv1.0 and MPLv1.1 and Public Domain and W3C
Description : The OpenJDK runtime environment.
Available Packages
Name : java-1.7.0-openjdk
Arch : x86_64
Epoch : 1
Version : 1.7.0.141
Release : 2.6.10.1.el7_3
Size : 231 k
Repo : updates/7/x86_64
Summary : OpenJDK Runtime Environment
URL : http://openjdk.java.net/
License : ASL 1.1 and ASL 2.0 and GPL+ and GPLv2 and GPLv2 with exceptions and LGPL+ and LGPLv2 and MPLv1.0 and MPLv1.1 and Public Domain and W3C
Description : The OpenJDK runtime environment.
答案1
这里的提示是以下目录中存在排除的软件包yum repolist：
repo id repo name status
base/7/x86_64 CentOS-7 - Base 9,313+50
epel/x86_64 Extra Packages for Enterprise Linux 7 - x86_64 11,624+5
extras/7/x86_64 CentOS-7 - Extras 337
puppetlabs-deps/x86_64 Puppet Labs Dependencies El 7 - x86_64 17
puppetlabs-products/x86_64 Puppet Labs Products El 7 - x86_64 225
updates/7/x86_64 CentOS-7 - Updates 1,485+100
...如加号所示：1,485+100。
Frontalb 机器将 java 包显示在updates/7/x86_64存储库中，因此需要从 Frontala 上的存储库中删除排除项，以便它能够看到 java 包。