rob05c commented on issue #2251: Traffic Monitor still starting, some caches unpolled URL: https://github.com/apache/incubator-trafficcontrol/issues/2251#issuecomment-388068010 >monitor config server cdn1cdedge0001 profile EDGE_VM_713 has no polling URL We've seen a similar event, when changing the profile of a cache. I'm guessing you renamed a profile. So, the `CRConfig.json` still has the server with the old profile, while `monitoring.json` which contains the polling URLs doesn't have that profile. You're right, fundamentally, this should not cause the Monitor to fail to start. But at the same time, the Monitor does need to fail to start, if it can't poll all caches -- otherwise, it may give bad data to the Router. The real issue is that some data is raw, and some is snapshotted. We really need to snapshot all data, the Monitor and Router should never get raw data from TO. I think this is a duplicate of https://github.com/apache/incubator-trafficcontrol/issues/1738
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