It's still looking in epel. To default to disabled you have to either (1) use the yum-config-manager command I showed or (2) Edit /etc/yum.repos.d/epel.repo and set enabled=0. Then when you want to use epel: yum --enablerepo=epel ...
What's happening is there is a package (liborcus) that requires libboost_iostreams-mt.so.1 but at the .53 level but yum is trying to upgrade and wants to install the .64 level. You can use the -x or --exclude option of yum to tell it to ignore the .64 versions. On 5/30/18, 16:04, "Linux on 390 Port on behalf of Frank M. Ramaekers" <LINUX-390@VM.MARIST.EDU on behalf of framaek...@ailife.com> wrote: Well, it appears that I'm already there: # yum -y install epel-release Loaded plugins: fastestmirror, langpacks Loading mirror speeds from cached hostfile Package epel-release-7-11.noarch already installed and latest version Nothing to do Yet, I was able to get to 7.5 with 'yum --disablerepo=epel update: cat /etc/redhat-release CentOS Linux release 7.5.1804 (Core) ...still can't do a 'yum update' (w/o the --disablerepo=epel): Error: Package: liborcus-0.12.1-2.el7.s390x (@base) Requires: libboost_iostreams-mt.so.1.53.0()(64bit) Removing: boost-iostreams-1.53.0-27.el7.s390x (@anaconda/7.4.1708) libboost_iostreams-mt.so.1.53.0()(64bit) Updated By: boost-iostreams-1.64.0-0.6.el7.s390x (epel) Not found The only reason I added epel was for incron, which I use heavily for scripting incoming file transfers. ---------------------------------------------------------------------- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390 ---------------------------------------------------------------------- For more information on Linux on System z, visit http://wiki.linuxvm.org/