  We compute the one-point functions of chiral primary operators in the
non-supersymmetric defect conformal field theory that is dual to the IIB string
theory on $AdS_5\times S^5$ background with a probe D7 brane with internal
gauge field flux, both in perturbative Yang-Mills theory and in the string
theory dual. The former is expected to be accurate at weak coupling whereas the
latter should be accurate in the planar strong coupling limit of the gauge
theory. We consider the distinct cases where the D7 brane has geometry
$AdS_4\times S^4$ with an instanton bundle of the worldvolume gauge fields on
$S^4$ and $AdS_4\times S^2\times S^2$ with Dirac monopole bundles on each
$S^2$. The gauge theory computation and the string theory computation can be
compared directly in the planar limit and then a subsequent limit where the
worldvolume flux is large. We find that there is exact agreement between the
two in the leading order.
