在 centos 8 上发出命令时，dnf upgrade我收到以下信息：
Error:
Problem 1: package net-snmp-perl-1:5.8-7.el8.2.x86_64 requires net-snmp-agent-libs(x86-64) = 1:5.8-7.el8.2, but none of the providers can be installed
- cannot install both net-snmp-agent-libs-1:5.8-10.el8.x86_64 and net-snmp-agent-libs-1:5.8-7.el8.2.x86_64
- cannot install both net-snmp-agent-libs-1:5.8-7.el8.2.x86_64 and net-snmp-agent-libs-1:5.8-10.el8.x86_64
- cannot install the best update candidate for package net-snmp-perl-1:5.8-7.el8.2.x86_64
- cannot install the best update candidate for package net-snmp-agent-libs-1:5.8-7.el8.2.x86_64
Problem 2: package net-snmp-gui-1:5.8-7.el8.2.x86_64 requires net-snmp-perl(x86-64) = 1:5.8-7.el8.2, but none of the providers can be installed
- package net-snmp-perl-1:5.8-7.el8.2.x86_64 requires net-snmp-libs(x86-64) = 1:5.8-7.el8.2, but none of the providers can be installed
- cannot install both net-snmp-libs-1:5.8-10.el8.x86_64 and net-snmp-libs-1:5.8-7.el8.2.x86_64
- cannot install both net-snmp-libs-1:5.8-7.el8.2.x86_64 and net-snmp-libs-1:5.8-10.el8.x86_64
- cannot install the best update candidate for package net-snmp-libs-1:5.8-7.el8.2.x86_64
- cannot install the best update candidate for package net-snmp-gui-1:5.8-7.el8.2.x86_64
Problem 3: problem with installed package net-snmp-perl-1:5.8-7.el8.2.x86_64
- package net-snmp-perl-1:5.8-7.el8.2.x86_64 requires net-snmp-agent-libs(x86-64) = 1:5.8-7.el8.2, but none of the providers can be installed
- cannot install both net-snmp-agent-libs-1:5.8-10.el8.x86_64 and net-snmp-agent-libs-1:5.8-7.el8.2.x86_64
- cannot install both net-snmp-agent-libs-1:5.8-7.el8.2.x86_64 and net-snmp-agent-libs-1:5.8-10.el8.x86_64
- package net-snmp-1:5.8-10.el8.x86_64 requires net-snmp-agent-libs(x86-64) = 1:5.8-10.el8, but none of the providers can be installed
- cannot install the best update candidate for package net-snmp-1:5.8-7.el8.2.x86_64
Problem 4: problem with installed package net-snmp-gui-1:5.8-7.el8.2.x86_64
- package net-snmp-gui-1:5.8-7.el8.2.x86_64 requires net-snmp-perl(x86-64) = 1:5.8-7.el8.2, but none of the providers can be installed
- package net-snmp-perl-1:5.8-7.el8.2.x86_64 requires net-snmp-libs(x86-64) = 1:5.8-7.el8.2, but none of the providers can be installed
- cannot install both net-snmp-libs-1:5.8-10.el8.x86_64 and net-snmp-libs-1:5.8-7.el8.2.x86_64
- cannot install both net-snmp-libs-1:5.8-7.el8.2.x86_64 and net-snmp-libs-1:5.8-10.el8.x86_64
- package net-snmp-utils-1:5.8-10.el8.x86_64 requires net-snmp-libs(x86-64) = 1:5.8-10.el8, but none of the providers can be installed
- cannot install the best update candidate for package net-snmp-utils-1:5.8-7.el8.2.x86_64
(try to add '--allowerasing' to command line to replace conflicting packages or '--skip-broken' to skip uninstallable packages or '--nobest' to use not only best candidate packages)
关于我可以对这个问题做什么的任何线索，而无需使用--allowerasing，--skip-broken因为我试图理解该消息的含义，但不幸的是，我无法判断哪个包导致了这个问题。
我也注意到了这一点：
[root@localhost ~]# yum list installed | grep snmp
Modular dependency problems:
Problem 1: conflicting requests
- nothing provides module(perl:5.26) needed by module perl-DBD-MySQL:4.046:8010020191114030811:073fa5fe-0.x86_64
Problem 2: conflicting requests
- nothing provides module(perl:5.26) needed by module perl-DBD-SQLite:1.58:8010020191114033549:073fa5fe-0.x86_64
Problem 3: conflicting requests
- nothing provides module(perl:5.26) needed by module perl-DBI:1.641:8010020191113222731:16b3ab4d-0.x86_64
net-snmp.x86_64 1:5.8-7.el8.2 @okay
net-snmp-agent-libs.x86_64 1:5.8-7.el8.2 @okay
net-snmp-gui.x86_64 1:5.8-7.el8.2 @okay
net-snmp-libs.x86_64 1:5.8-7.el8.2 @okay
net-snmp-perl.x86_64 1:5.8-7.el8.2 @okay
net-snmp-utils.x86_64 1:5.8-7.el8.2 @okay
pcp-pmda-snmp.x86_64 4.3.2-2.el8 @AppStream
snmptt.noarch 1.4-1.7 @@commandline
还有这个：
[root@localhost ~]# rpm -qa | grep snmp
net-snmp-agent-libs-5.8-7.el8.2.x86_64
net-snmp-perl-5.8-7.el8.2.x86_64
net-snmp-utils-5.8-7.el8.2.x86_64
net-snmp-5.8-7.el8.2.x86_64
pcp-pmda-snmp-4.3.2-2.el8.x86_64
snmptt-1.4-1.7.noarch
net-snmp-libs-5.8-7.el8.2.x86_64
net-snmp-gui-5.8-7.el8.2.x86_64
谢谢
答案1
编辑2020 年 6 月 8 日：我在 Redhat 上提交了一个错误，因为我有高级支持，错误#1773441。 Redhat 不再构建 net-snmp-perl，所以我认为 net-snmp-perl 1:5.8-12.el8_1.1 很快就会推出。
我发现了问题，似乎 Centos 8 不存在 net-snmp-perl-1:5.8-10.el8，为什么安装 net-snmp-perl，它会将这些软件包降级到 1:5.8-7.el8。显然这次使用 Centos 8 是个坏主意。有许多缺少的软件包我必须手动安装，例如 snmptt，知道如何请求此软件包可用于 Centos 8
=======================================================================================================================================================
Package Architecture Version Repository Size
=======================================================================================================================================================
Upgrading:
net-snmp x86_64 1:5.8-10.el8 AppStream 353 k
net-snmp-agent-libs x86_64 1:5.8-10.el8 AppStream 751 k
net-snmp-utils x86_64 1:5.8-10.el8 AppStream 238 k
net-snmp-libs x86_64 1:5.8-10.el8 BaseOS 822 k
Removing dependent packages:
net-snmp-perl x86_64 1:5.8-7.el8.2 @okay 1.2 M
Transaction Summary
=======================================================================================================================================================
Upgrade 4 Packages
Remove 1 Package