I managed to fix this by hardcoding the version of Centos to 7.8.2003 in the 
Hi, Following the install guide at [URL] , i get this:   sudo yum upgrade --releasever=7.8Loaded plugins: fastestmirrorDetermining fastest mirrors One of the configured repositories failed (Unknown),and yum doesn't have enough cached data to continue. At this point the onlysafe thing yum can do is fail. There are a few ways to work "fix" this: 1. Contact the upstream for the repository and get them to fix the problem. 2. Reconfigure the baseurl/etc. for the repository, to point to a workingupstream. This is most often useful if you are using a newerdistribution release than is supported by the repository (and thepackages for the previous distribution release still work). 3. Run the command with the repository temporarily disabledyum --disablerepo= ...  4. Disable the repository permanently, so yum won't use it by default. Yumwill then just ignore the repository until you permanently enable itagain or use --enablerepo for temporary usage: yum-config-manager --disable or subscription-manager repos --disable=  5. Configure the failing repository to be skipped, if it is unavailable.Note that yum will try to contact the repo. when it runs most commands,so will have to try and fail each time (and thus. yum will be be muchslower). If it is a very temporary problem though, this is often a nicecompromise: yum-config-manager --save --setopt= .skip_if_unavailable=true  Cannot find a valid baseurl for repo: base/7.8/x86_64   cat /etc/os-releaseNAME="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="[URL]"BUG_REPORT_URL="[URL]" CENTOS_MANTISBT_PROJECT="CentOS-7"CENTOS_MANTISBT_PROJECT_VERSION="7"REDHAT_SUPPORT_PRODUCT="centos"REDHAT_SUPPORT_PRODUCT_VERSION="7"   so as per the install guide:    You may need to update the location of your vault repository to a server with CentOS 7.8. To see an example, see[URL]  I now get:   sudo yum upgrade --releasever=7.8Loaded plugins: fastestmirrorLoading mirror speeds from cached hostfileepel/x86_64/metalink | 29 kB 00:00:00* epel: mirror.hostnet.nl[URL] [Errno 14] HTTPS Error 404 - Not FoundTrying other mirror.To address this issue please refer to the below wiki article [URL] If above article doesn't help to resolve this issue please use [URL]   One of the configured repositories failed (CentOS-7.8 - Base),and yum doesn't have enough cached data to continue. At this point the onlysafe thing yum can do is fail. There are a few ways to work "fix" this: 1. Contact the upstream for the repository and get them to fix the problem. 2. Reconfigure the baseurl/etc. for the repository, to point to a workingupstream. This is most often useful if you are using a newerdistribution release than is supported by the repository (and thepackages for the previous distribution release still work). 3. Run the command with the repository temporarily disabledyum --disablerepo=base ... 4. Disable the repository permanently, so yum won't use it by default. Yumwill then just ignore the repository until you permanently enable itagain or use --enablerepo for temporary usage: yum-config-manager --disable baseorsubscription-manager repos --disable=base 5. Configure the failing repository to be skipped, if it is unavailable.Note that yum will try to contact the repo. when it runs most commands,so will have to try and fail each time (and thus. yum will be be muchslower). If it is a very temporary problem though, this is often a nicecompromise: yum-config-manager --save --setopt=base.skip_if_unavailable=true failure: repodata/repomd.xml from base: [Errno 256] No more mirrors to try.[URL] [Errno 14] HTTPS Error 404 - Not Found   Any ideas?          
InsightIQ upgrade from 4.1.3.88 to 4.1.4 fails on centos 7