How to remove a wan connected datacenter in consul

I have a completely failed datacenter cluster(DC1) which I'll not use in future. But it is wan-join ed with another live data cluster(DC2) which I'd like to continue using.

I've already marked all the members of DC1 as 'left' using consul force-leave

But I still see DC2 when I list the datacenters using consul catalog datacenters. How can I remove it?

In simpler words : How can we break wan connection between two consul clusters?

Solution

These datacenters will be removed by consul in 72 hours.

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