我无法在 RHEL8 中安装 python 2.7。我在 Centos7 存储库之外找不到 python 包已经让我很困扰，但是当我尝试安装时，出现了大量损坏的依赖项：
sudo dnf install python
给我：
Last metadata expiration check: 0:09:54 ago on Thu 05 Aug 2021 09:35:23 PM CDT.
Error:
Problem: package mod_ssl-1:2.4.37-10.module+el8+2764+7127e69e.x86_64 requires libcrypto.so.1.1()(64bit), but none of the providers can be installed
- package mod_ssl-1:2.4.37-10.module+el8+2764+7127e69e.x86_64 requires libcrypto.so.1.1(OPENSSL_1_1_0)(64bit), but none of the providers can be installed
- package mod_ssl-1:2.4.37-10.module+el8+2764+7127e69e.x86_64 requires libssl.so.1.1()(64bit), but none of the providers can be installed
- package mod_ssl-1:2.4.37-10.module+el8+2764+7127e69e.x86_64 requires libssl.so.1.1(OPENSSL_1_1_0)(64bit), but none of the providers can be installed
- package mod_ssl-1:2.4.37-10.module+el8+2764+7127e69e.x86_64 requires libssl.so.1.1(OPENSSL_1_1_1)(64bit), but none of the providers can be installed
- cannot install both openssl-libs-1:1.0.2k-19.el7.x86_64 and openssl-libs-1:1.1.1g-15.el8_3.x86_64
- problem with installed package mod_ssl-1:2.4.37-10.module+el8+2764+7127e69e.x86_64
- package python-libs-2.7.5-89.el7.x86_64 requires libcrypto.so.10()(64bit), but none of the providers can be installed
- package python-libs-2.7.5-89.el7.x86_64 requires libcrypto.so.10(libcrypto.so.10)(64bit), but none of the providers can be installed
- package python-libs-2.7.5-89.el7.x86_64 requires libssl.so.10()(64bit), but none of the providers can be installed
- package python-libs-2.7.5-89.el7.x86_64 requires libssl.so.10(libssl.so.10)(64bit), but none of the providers can be installed
- package python-libs-2.7.5-89.el7.x86_64 requires libcrypto.so.10(OPENSSL_1.0.1_EC)(64bit), but none of the providers can be installed
- package python-libs-2.7.5-89.el7.x86_64 requires libcrypto.so.10(OPENSSL_1.0.2)(64bit), but none of the providers can be installed
- package mod_ssl-1:2.4.6-95.el7.centos.x86_64 requires httpd = 2.4.6-95.el7.centos, but none of the providers can be installed
- package python-2.7.5-89.el7.x86_64 requires libpython2.7.so.1.0()(64bit), but none of the providers can be installed
- package python-2.7.5-89.el7.x86_64 requires python-libs(x86-64) = 2.7.5-89.el7, but none of the providers can be installed
- package mod_http2-1.11.3-1.module+el8+2443+605475b7.x86_64 conflicts with httpd < 2.4.25-8 provided by httpd-2.4.6-95.el7.centos.x86_64
- conflicting requests
- problem with installed package mod_http2-1.11.3-1.module+el8+2443+605475b7.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)
当我尝试sudo dnf install python --allowerasing
时，我得到：
Last metadata expiration check: 0:22:11 ago on Thu 05 Aug 2021 09:35:23 PM CDT.
Error:
Problem: The operation would result in removing the following protected packages: dnf
(try to add '--skip-broken' to skip uninstallable packages or '--nobest' to use not only best candidate packages)
这听起来不太好。
sudo dnf install python --nobest --skip-broken
然后：
Last metadata expiration check: 0:11:50 ago on Thu 05 Aug 2021 09:35:23 PM CDT.
Dependencies resolved.
Problem: package mod_ssl-1:2.4.37-10.module+el8+2764+7127e69e.x86_64 requires libcrypto.so.1.1()(64bit), but none of the providers can be installed
- package mod_ssl-1:2.4.37-10.module+el8+2764+7127e69e.x86_64 requires libcrypto.so.1.1(OPENSSL_1_1_0)(64bit), but none of the providers can be installed
- package mod_ssl-1:2.4.37-10.module+el8+2764+7127e69e.x86_64 requires libssl.so.1.1()(64bit), but none of the providers can be installed
- package mod_ssl-1:2.4.37-10.module+el8+2764+7127e69e.x86_64 requires libssl.so.1.1(OPENSSL_1_1_0)(64bit), but none of the providers can be installed
- package mod_ssl-1:2.4.37-10.module+el8+2764+7127e69e.x86_64 requires libssl.so.1.1(OPENSSL_1_1_1)(64bit), but none of the providers can be installed
- cannot install both openssl-libs-1:1.0.2k-19.el7.x86_64 and openssl-libs-1:1.1.1g-15.el8_3.x86_64
- problem with installed package mod_ssl-1:2.4.37-10.module+el8+2764+7127e69e.x86_64
- package python-libs-2.7.5-89.el7.x86_64 requires libcrypto.so.10()(64bit), but none of the providers can be installed
- package python-libs-2.7.5-89.el7.x86_64 requires libcrypto.so.10(libcrypto.so.10)(64bit), but none of the providers can be installed
- package python-libs-2.7.5-89.el7.x86_64 requires libssl.so.10()(64bit), but none of the providers can be installed
- package python-libs-2.7.5-89.el7.x86_64 requires libssl.so.10(libssl.so.10)(64bit), but none of the providers can be installed
- package python-libs-2.7.5-89.el7.x86_64 requires libcrypto.so.10(OPENSSL_1.0.1_EC)(64bit), but none of the providers can be installed
- package python-libs-2.7.5-89.el7.x86_64 requires libcrypto.so.10(OPENSSL_1.0.2)(64bit), but none of the providers can be installed
- package mod_ssl-1:2.4.6-95.el7.centos.x86_64 requires httpd = 2.4.6-95.el7.centos, but none of the providers can be installed
- package python-2.7.5-89.el7.x86_64 requires libpython2.7.so.1.0()(64bit), but none of the providers can be installed
- package python-2.7.5-89.el7.x86_64 requires python-libs(x86-64) = 2.7.5-89.el7, but none of the providers can be installed
- package mod_http2-1.11.3-1.module+el8+2443+605475b7.x86_64 conflicts with httpd < 2.4.25-8 provided by httpd-2.4.6-95.el7.centos.x86_64
- conflicting requests
- problem with installed package mod_http2-1.11.3-1.module+el8+2443+605475b7.x86_64
==================================================================================================================================
Package Arch Version Repository Size
==================================================================================================================================
Skipping packages with conflicts:
(add '--best --allowerasing' to command line to force their upgrade):
httpd x86_64 2.4.6-95.el7.centos centos7 2.7 M
openssl-libs x86_64 1:1.0.2k-19.el7 centos7 1.2 M
Skipping packages with broken dependencies:
mod_ssl x86_64 1:2.4.6-95.el7.centos centos7 114 k
python x86_64 2.7.5-89.el7 centos7 96 k
python-libs x86_64 2.7.5-89.el7 centos7 5.6 M
Transaction Summary
==================================================================================================================================
Skip 5 Packages
Nothing to do.
Complete!
当然，Python也不是生产出来的。我不知道该怎么做。我还有其他选择来安装 python 吗？ （我需要 python，而不是 python3，因为我尝试运行的可执行文件/脚本是用 python 编写的，如果将 python 别名为 python3，我会收到各种错误）。是否有适用于 python 2.7 的 rpm 包不会成为依赖项噩梦？
答案1
Python 2.7 是可在 RHEL 8 AppStream 存储库中找到（包裹python2）。请不要合并 RHEL/CentOS 不同主要版本的存储库，这不受支持，而且正如您所见，这是不可能的。
# dnf info python2
Available Packages
Name : python2
Version : 2.7.18
Release : 6.module_el8.5.0+772+8dae0bfd
Architecture : x86_64
Size : 109 k
Source : python2-2.7.18-6.module_el8.5.0+772+8dae0bfd.src.rpm
Repository : appstream
Summary : An interpreted, interactive, object-oriented programming language
...