[openEuler]关于报错cannot install the best update candidate for package
① 直接po指令
#可能是与上次更新缓存冲突了，按顺序输入以下指令
#如果没有【dnf】就使用【yum】
sudo dnf clean all sudo dnf check && dnf check-update sudo dnf update
② 亦或者是包冲突了
#以下这条指令有风险，请确认好后谨慎使用 #冲突的包改成那个包名
sudo dnf remove #冲突的包
③ 下下策：删除EPEL源再跑一次①
sudo dnf emove epel-release -y
④ 下下下策：使用参数【非优选版本】
sudo dnf update --nobest
⑤ 亦或者是当前系统版本太新，没有包，拿就只能等了
顺便po一下openEuler的yum源，菜，华为源自己给的命令都不对的
[OS] name=OS baseurl=http://repo.openeuler.org/openEuler-20.03-LTS-SP1/OS/$basearch/ metalink=https://mirrors.openeuler.org/metalink?repo=$releasever/OS&arch=$basearch metadata_expire=1h enabled=1 gpgcheck=1 gpgkey=http://repo.openeuler.org/openEuler-20.03-LTS-SP1/OS/$basearch/RPM-GPG-KEY-openEuler [everything] name=everything baseurl=http://repo.openeuler.org/openEuler-20.03-LTS-SP1/everything/$basearch/ metalink=https://mirrors.openeuler.org/metalink?repo=$releasever/everything&arch=$basearch metadata_expire=1h enabled=1 gpgcheck=1 gpgkey=http://repo.openeuler.org/openEuler-20.03-LTS-SP1/everything/$basearch/RPM-GPG-KEY-openEuler [EPOL] name=EPOL baseurl=http://repo.openeuler.org/openEuler-20.03-LTS-SP1/EPOL/$basearch/ metalink=https://mirrors.openeuler.org/metalink?repo=$releasever/EPOL/main&arch=$basearch metadata_expire=1h enabled=1 gpgcheck=1 gpgkey=http://repo.openeuler.org/openEuler-20.03-LTS-SP1/OS/$basearch/RPM-GPG-KEY-openEuler [debuginfo] name=debuginfo baseurl=http://repo.openeuler.org/openEuler-20.03-LTS-SP1/debuginfo/$basearch/ metalink=https://mirrors.openeuler.org/metalink?repo=$releasever/debuginfo&arch=$basearch metadata_expire=1h enabled=1 gpgcheck=1 gpgkey=http://repo.openeuler.org/openEuler-20.03-LTS-SP1/debuginfo/$basearch/RPM-GPG-KEY-openEuler [source] name=source baseurl=http://repo.openeuler.org/openEuler-20.03-LTS-SP1/source/ metalink=https://mirrors.openeuler.org/metalink?repo=$releasever&arch=source metadata_expire=1h enabled=1 gpgcheck=1 gpgkey=http://repo.openeuler.org/openEuler-20.03-LTS-SP1/source/RPM-GPG-KEY-openEuler [update] name=update baseurl=http://repo.openeuler.org/openEuler-20.03-LTS-SP1/update/$basearch/ metalink=https://mirrors.openeuler.org/metalink?repo=$releasever/update&arch=$basearch metadata_expire=1h enabled=1 gpgcheck=1 gpgkey=http://repo.openeuler.org/openEuler-20.03-LTS-SP1/OS/$basearch/RPM-GPG-KEY-openEuler [update-source] name=update-source baseurl=http://repo.openeuler.org/openEuler-20.03-LTS-SP1/update/source/ metalink=https://mirrors.openeuler.org/metalink?repo=$releasever/update&arch=source metadata_expire=1h enabled=1 gpgcheck=1 gpgkey=http://repo.openeuler.org/openEuler-20.03-LTS-SP1/source/RPM-GPG-KEY-openEuler
#generic-repos is licensed under the Mulan PSL v2. #You can use this software according to the terms and conditions of the Mulan PSL v2. #You may obtain a copy of Mulan PSL v2 at: # http://license.coscl.org.cn/MulanPSL2 #THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND, EITHER EXPRESS OR #IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT, MERCHANTABILITY OR FIT FOR A PARTICULAR #PURPOSE. #See the Mulan PSL v2 for more details. [OS] name=OS baseurl=http://repo.openeuler.org/openEuler-20.03-LTS-SP4/OS/$basearch/ metalink=https://mirrors.openeuler.org/metalink?repo=$releasever/OS&arch=$basearch metadata_expire=1h enabled=1 gpgcheck=1 gpgkey=http://repo.openeuler.org/openEuler-20.03-LTS-SP4/OS/$basearch/RPM-GPG-KEY-openEuler [everything] name=everything baseurl=http://repo.openeuler.org/openEuler-20.03-LTS-SP4/everything/$basearch/ metalink=https://mirrors.openeuler.org/metalink?repo=$releasever/everything&arch=$basearch metadata_expire=1h enabled=1 gpgcheck=1 gpgkey=http://repo.openeuler.org/openEuler-20.03-LTS-SP4/everything/$basearch/RPM-GPG-KEY-openEuler [EPOL] name=EPOL baseurl=http://repo.openeuler.org/openEuler-20.03-LTS-SP4/EPOL/main/$basearch/ metalink=https://mirrors.openeuler.org/metalink?repo=$releasever/EPOL/main&arch=$basearch metadata_expire=1h enabled=1 gpgcheck=1 gpgkey=http://repo.openeuler.org/openEuler-20.03-LTS-SP4/OS/$basearch/RPM-GPG-KEY-openEuler [debuginfo] name=debuginfo baseurl=http://repo.openeuler.org/openEuler-20.03-LTS-SP4/debuginfo/$basearch/ metalink=https://mirrors.openeuler.org/metalink?repo=$releasever/debuginfo&arch=$basearch metadata_expire=1h enabled=1 gpgcheck=1 gpgkey=http://repo.openeuler.org/openEuler-20.03-LTS-SP4/debuginfo/$basearch/RPM-GPG-KEY-openEuler [source] name=source baseurl=http://repo.openeuler.org/openEuler-20.03-LTS-SP4/source/ metalink=https://mirrors.openeuler.org/metalink?repo=$releasever&arch=source metadata_expire=1h enabled=1 gpgcheck=1 gpgkey=http://repo.openeuler.org/openEuler-20.03-LTS-SP4/source/RPM-GPG-KEY-openEuler [update] name=update baseurl=http://repo.openeuler.org/openEuler-20.03-LTS-SP4/update/$basearch/ metalink=https://mirrors.openeuler.org/metalink?repo=$releasever/update&arch=$basearch metadata_expire=1h enabled=1 gpgcheck=1 gpgkey=http://repo.openeuler.org/openEuler-20.03-LTS-SP4/OS/$basearch/RPM-GPG-KEY-openEuler [update-source] name=update-source baseurl=http://repo.openeuler.org/openEuler-20.03-LTS-SP4/update/source/ metalink=https://mirrors.openeuler.org/metalink?repo=$releasever/update&arch=source metadata_expire=1h enabled=1 gpgcheck=1 gpgkey=http://repo.openeuler.org/openEuler-20.03-LTS-SP4/source/RPM-GPG-KEY-openEuler
还有openEuler的华为源
[OS] name=OS baseurl=https://mirrors.huaweicloud.com/openeuler/openEuler-22.03-LTS-SP3/OS/$basearch/ metalink=https://mirrors.openeuler.org/openeuler/metalink?repo=$releasever/OS&arch=$basearch metadata_expire=1h enabled=1 gpgcheck=1 gpgkey=https://mirrors.huaweicloud.com/openeuler/openEuler-22.03-LTS-SP3/OS/$basearch/RPM-GPG-KEY-openEuler [everything] name=everything baseurl=https://mirrors.huaweicloud.com/openeuler/openEuler-22.03-LTS-SP3/everything/$basearch/ metalink=https://mirrors.openeuler.org/openeuler/metalink?repo=$releasever/everything&arch=$basearch metadata_expire=1h enabled=1 gpgcheck=1 gpgkey=https://mirrors.huaweicloud.com/openeuler/openEuler-22.03-LTS-SP3/everything/$basearch/RPM-GPG-KEY-openEuler [EPOL] name=EPOL baseurl=https://mirrors.huaweicloud.com/openeuler/openEuler-22.03-LTS-SP3/EPOL/main/$basearch/ metalink=https://mirrors.openeuler.org/openeuler/metalink?repo=$releasever/EPOL/main&arch=$basearch metadata_expire=1h enabled=1 gpgcheck=1 gpgkey=https://mirrors.huaweicloud.com/openeuler/openEuler-22.03-LTS-SP3/OS/$basearch/RPM-GPG-KEY-openEuler [debuginfo] name=debuginfo baseurl=https://mirrors.huaweicloud.com/openeuler/openEuler-22.03-LTS-SP3/debuginfo/$basearch/ metalink=https://mirrors.openeuler.org/openeuler/metalink?repo=$releasever/debuginfo&arch=$basearch metadata_expire=1h enabled=1 gpgcheck=1 gpgkey=https://mirrors.huaweicloud.com/openeuler/openEuler-22.03-LTS-SP3/debuginfo/$basearch/RPM-GPG-KEY-openEuler [source] name=source baseurl=https://mirrors.huaweicloud.com/openeuler/openEuler-22.03-LTS-SP3/source/ metalink=https://mirrors.openeuler.org/openeuler/metalink?repo=$releasever&arch=source metadata_expire=1h enabled=1 gpgcheck=1 gpgkey=https://mirrors.huaweicloud.com/openeuler/openEuler-22.03-LTS-SP3/source/RPM-GPG-KEY-openEuler [update] name=update baseurl=https://mirrors.huaweicloud.com/openeuler/openEuler-22.03-LTS-SP3/update/$basearch/ metalink=https://mirrors.openeuler.org/openeuler/metalink?repo=$releasever/update&arch=$basearch metadata_expire=1h enabled=1 gpgcheck=1 gpgkey=https://mirrors.huaweicloud.com/openeuler/openEuler-22.03-LTS-SP3/OS/$basearch/RPM-GPG-KEY-openEuler [update-source] name=update-source baseurl=https://mirrors.huaweicloud.com/openeuler/openEuler-22.03-LTS-SP3/update/source/ metalink=https://mirrors.openeuler.org/openeuler/metalink?repo=$releasever/update&arch=source metadata_expire=1h enabled=1 gpgcheck=1 gpgkey=https://mirrors.huaweicloud.com/openeuler/openEuler-22.03-LTS-SP3/source/RPM-GPG-KEY-openEuler
还有openEuler的EPEL（powerTools不可用）
[epel] name=EPEL in openEuler - $releasever_$basearch # It is much more secure to use the #metalink, but if you wish to use a local mirror # place its address here. baseurl=https://repo.huaweicloud.com/epel/8/Everything/$basearch #metalink=https://mirrors.fedoraproject.org/#metalink?repo=epel-$releasever&arch=$basearch&infra=$infra&content=$contentdir enabled=1 gpgcheck=0 countme=1 gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-EPEL-8 [epel-debuginfo] name=EPEL in openEuler - $releasever_$basearch - Debug # It is much more secure to use the #metalink, but if you wish to use a local mirror # place its address here. baseurl=https://repo.huaweicloud.com/epel/$releasever/Everything/$basearch/debug #metalink=https://mirrors.fedoraproject.org/#metalink?repo=epel-debug-$releasever&arch=$basearch&infra=$infra&content=$contentdir enabled=0 gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-EPEL-8 gpgcheck=0 [epel-source] name=EPEL in openEuler - $releasever_$basearch - Source # It is much more secure to use the #metalink, but if you wish to use a local mirror # place it's address here. baseurl=https://repo.huaweicloud.com/$releasever/Everything/source/tree/ #metalink=https://mirrors.fedoraproject.org/#metalink?repo=epel-source-$releasever&arch=$basearch&infra=$infra&content=$contentdir enabled=0 gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-EPEL-8 gpgcheck=0 [powertools] name=PowerTools in CentOS Linux - $basearch #mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=PowerTools&infra=$infra baseurl=https://mirrors.tuna.tsinghua.edu.cn/centos/8-stream/PowerTools/$basearch/os/ gpgcheck=1 enabled=1 gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-centosofficial
