问题：最小化安装Centos7，配置了阿里云官方yum源之后，一直无法使用yum
Error: Depsolving loop limit reached.
Error: Package: rpm-python-4.11.3-45.el7.x86_64 (@anaconda)
Requires: librpm.so.3()(64bit)
Removing: rpm-libs-4.11.3-45.el7.x86_64 (@anaconda)
librpm.so.3()(64bit)
Updated By: rpm-libs-4.14.3-19.el8.x86_64 (base)
~librpm.so.8()(64bit)
Error: Package: rpm-python-4.11.3-45.el7.x86_64 (@anaconda)
Requires: librpmsign.so.1()(64bit)
Removing: rpm-build-libs-4.11.3-45.el7.x86_64 (@anaconda)
librpmsign.so.1()(64bit)
Updated By: rpm-build-libs-4.14.3-19.el8.x86_64 (base)
~librpmsign.so.8()(64bit)
Error: Package: libidn2-2.3.4-1.el7.x86_64 (epel)
Requires: libunistring.so.0()(64bit)
Removing: libunistring-0.9.3-9.el7.x86_64 (@anaconda)
libunistring.so.0()(64bit)
Updated By: libunistring-0.9.9-3.el8.x86_64 (base)
~libunistring.so.2()(64bit)
Error: Package: rpm-python-4.11.3-45.el7.x86_64 (@anaconda)
Requires: librpmbuild.so.3()(64bit)
Removing: rpm-build-libs-4.11.3-45.el7.x86_64 (@anaconda)
librpmbuild.so.3()(64bit)
Updated By: rpm-build-libs-4.14.3-19.el8.x86_64 (base)
~librpmbuild.so.8()(64bit)
Error: Package: rpm-python-4.11.3-45.el7.x86_64 (@anaconda)
Requires: rpm = 4.11.3-45.el7
Removing: rpm-4.11.3-45.el7.x86_64 (@anaconda)
rpm = 4.11.3-45.el7
Updated By: rpm-4.14.3-19.el8.x86_64 (base)
rpm = 4.14.3-19.el8
Error: Package: rpm-python-4.11.3-45.el7.x86_64 (@anaconda)
Requires: liblua-5.1.so()(64bit)
Removing: lua-5.1.4-15.el7.x86_64 (@anaconda)
liblua-5.1.so()(64bit)
Updated By: lua-5.3.4-12.el8.x86_64 (AppStream)
Not found
Error: Package: systemd-sysv-219-78.el7.x86_64 (@anaconda)
Requires: systemd = 219-78.el7
Removing: systemd-219-78.el7.x86_64 (@anaconda)
systemd = 219-78.el7
Obsoleted By: systemd-239-51.el8_5.2.x86_64 (base)
systemd = 239-51.el8_5.2
Updated By: systemd-239-51.el8_5.2.x86_64 (base)
systemd = 239-51.el8_5.2
Available: systemd-239-51.el8.i686 (base)
systemd = 239-51.el8
Error: Package: rpm-python-4.11.3-45.el7.x86_64 (@anaconda)
Requires: librpmio.so.3()(64bit)
Removing: rpm-libs-4.11.3-45.el7.x86_64 (@anaconda)
librpmio.so.3()(64bit)
Updated By: rpm-libs-4.14.3-19.el8.x86_64 (base)
~librpmio.so.8()(64bit)
Error: Package: python-libs-2.7.5-89.el7.x86_64 (@anaconda)
Requires: libreadline.so.6()(64bit)
Removing: readline-6.2-11.el7.x86_64 (@anaconda)
libreadline.so.6()(64bit)
Updated By: readline-7.0-10.el8.x86_64 (base)
~libreadline.so.7()(64bit)
You could try using --skip-broken to work around the problem
You could try running: rpm -Va --nofiles --nodigest
解决办法：还是使用之前的yum配置文件，
清除缓存：yum clean all
生成新的缓存：yum makecache
升级软件包：yum update
之后就可以使用yum了
标签：x86,64bit,anaconda,64,使用,yum,rpm,el7 From： https://www.cnblogs.com/yun88/p/17851062.html