Description of problem:
I also met the issue described in
https://bugzilla.redhat.com/show_bug.cgi?id=1380496 on RHEL 7.5.
That bug was not completely fixed by
https://github.com/fedora-sysv/initscripts/pull/112, which has a type mismatch issue. I've developed an additional patch by converting the obtained DELAY value to an integer. The new patch has been developed: https://github.com/fedora-sysv/initscripts/pull/227.
Version-Release number of selected component (if applicable):
The follow pull-request has been updated, and it's commit will need to be backported to rhel7-branch...
*** Bug 1635313 has been marked as a duplicate of this bug. ***