Backport of consul: do not re-register already registered services into release/1.3.x #14927
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Backport
This PR is auto-generated from #14917 to be assessed for backporting due to the inclusion of the label backport/1.3.x.
WARNING automatic cherry-pick of commits failed. Commits will require human attention.
The below text is copied from the body of the original PR.
This PR updates Nomad's Consul service client to do map comparisons
using
maps.Equal
instead ofreflect.DeepEqual
. The bug fix is in howDeepEqual
treats nil slices different from empty slices, when actuallythey should be treated the same.
Also, we need to avoid comparing
TaggedAddress
on agent registrations ifnone are set on the Nomad side - because Consul will helpfully set that field
for us on its side.
And some drive-by cleanup
map[string]struct{}
forset.Set
Fixes #14914