Add "only_passing" option to DNS config #595
Merged
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This excludes nodes from DNS results if their healthchecks are in any non-passing state state, not just if they're critical.
In our environment, we only want to send traffic to nodes that we know are healthy. Our healthchecks often return both warning and unknown to indicate that something is wrong (the former to indicate that the node is online but we don't want to send traffic to it, e.g. for draining the node; and the latter for ¯_(ツ)_/¯)