Some repositories will be needed later to install Flight tools.
On all nodes do:
yum install -y epel-release
-yis an option for the install command that answers yes to install confirmation messages.
Once this command has been run on every node, the cluster is ready for the next step.
If all was successful, the added repositories will appear when running the command
yum repolist on every node. E.g. on head node:
[root@chead1 ~]# yum repolist Loaded plugins: fastestmirror Loading mirror speeds from cached hostfile * base: mirror.freethought-internet.co.uk * epel: epel.mirror.liteserver.nl * extras: repo.uk.bigstepcloud.com * updates: mirror.mhd.uk.as44574.net repo id repo name status base/7/x86_64 CentOS-7 - Base 10,072 epel/x86_64 Extra Packages for Enterprise Linux 7 - x86_64 13,750 extras/7/x86_64 CentOS-7 - Extras 516 updates/7/x86_64 CentOS-7 - Updates 4,160 repolist: 28,498