The pgtune package is available in EPEL5 and EPEL6, but not in EPEL7. It would be nice to also have this tool available in EPEL7. It would be good to also pull in the PostgreSQL 9.x pg_settings-* files from https://github.com/gregs1104/pgtune I think.
pgtune-0.9.3-12.da57e00.el7 has been submitted as an update for Fedora EPEL 7. https://admin.fedoraproject.org/updates/pgtune-0.9.3-12.da57e00.el7
Package pgtune-0.9.3-12.da57e00.el7: * should fix your issue, * was pushed to the Fedora EPEL 7 testing repository, * should be available at your local mirror within two days. Update it with: # su -c 'yum update --enablerepo=epel-testing pgtune-0.9.3-12.da57e00.el7' as soon as you are able to. Please go to the following url: https://admin.fedoraproject.org/updates/FEDORA-EPEL-2014-3901/pgtune-0.9.3-12.da57e00.el7 then log in and leave karma (feedback).
pgtune-0.9.3-12.da57e00.el7 has been pushed to the Fedora EPEL 7 stable repository. If problems still persist, please make note of it in this bug report.