[v16] Disable circuit breaking for proxies #44414
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Proxy circuit breakers can be tripped by errors that may occur during joining, due to some configuration issues with the join mechanism, or potentially due to a malicious user hitting /webapi/ping too frequently. As a result the cluster can end up in an unusable state that can only be rectified by fixing the join token issue or turning off agents attempting to join. To avoid this class of problems entirely, the proxy circuit breaker is now a noop. While this does mean backoff during periods when auth connectivity is spotty will be reduced for proxies, they are usually far out numbered by agents in the cluster. Their lack of circuit breaking shouldn't exacerbate thundering herds.
fspmarshall
approved these changes
Jul 18, 2024
espadolini
approved these changes
Jul 18, 2024
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Backport #44411 to branch/v16
changelog: Prevented DoSing the cluster during a mass failed join event by agents