Matei David d0e837d9ce Add HA mode for service-mirror (#11047) ... In certain scenarios, the service-mirror may act as a single point of failure. Linkerd's multicluster extension supports an `--ha` mode to increase reliability by adding more replicas, however, it is currently supported only in the gateway. To avoid the service-mirror as a single point of failure, this change introduces an `--ha` flag for `linkerd multicluster link`. The HA flag will use a set of value overrides that will: * Configure the service-mirror with affinity and PDB policies to ensure replicas are spread across hosts to protect against (in)voluntary disruptions; * Configure the service-mirror to run with more than 3 replicas; * Configure the service-mirror deployment's rolling strategy to ensure at least one replica is available. Additionally, with the introduction of leader election, `linkerd mc gateways` displays redundant information since metrics are collected from each pod. This change adds a small lookup table of currently lease claimants. Metrics are extracted only for claimants. --------- Signed-off-by: Matei David <matei@buoyant.io>		2023-07-17 09:24:59 +01:00
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linkerd-multicluster	edge-23.7.2 (#11109)	2023-07-13 19:15:36 +01:00
linkerd-multicluster-link	Add HA mode for service-mirror (#11047)	2023-07-17 09:24:59 +01:00