4 Commits (74de240902d3fd8c8f4b11bab77a00755d4c6e6e)

Author	SHA1	Message	Date
Ronald	94ec4eb2f4	copyright headers for agent folder (#16704) ... * copyright headers for agent folder * Ignore test data files * fix proto files and remove headers in agent/uiserver folder * ignore deep-copy files	2 years ago
Dan Upton	7a55de375c	xds: don't attempt to load-balance sessions for local proxies (#15789) ... Previously, we'd begin a session with the xDS concurrency limiter regardless of whether the proxy was registered in the catalog or in the server's local agent state. This caused problems for users who run `consul connect envoy` directly against a server rather than a client agent, as the server's locally registered proxies wouldn't be included in the limiter's capacity. Now, the `ConfigSource` is responsible for beginning the session and we only do so for services in the catalog. Fixes: https://github.com/hashicorp/consul/issues/15753	2 years ago
Chris S. Kim	bde57c0dd0	Regenerate files according to 1.19.2 formatter	2 years ago
Dan Upton	1c2c975b0b	xDS Load Balancing (#14397) ... Prior to #13244, connect proxies and gateways could only be configured by an xDS session served by the local client agent. In an upcoming release, it will be possible to deploy a Consul service mesh without client agents. In this model, xDS sessions will be handled by the servers themselves, which necessitates load-balancing to prevent a single server from receiving a disproportionate amount of load and becoming overwhelmed. This introduces a simple form of load-balancing where Consul will attempt to achieve an even spread of load (xDS sessions) between all healthy servers. It does so by implementing a concurrent session limiter (limiter.SessionLimiter) and adjusting the limit according to autopilot state and proxy service registrations in the catalog. If a server is already over capacity (i.e. the session limit is lowered), Consul will begin draining sessions to rebalance the load. This will result in the client receiving a `RESOURCE_EXHAUSTED` status code. It is the client's responsibility to observe this response and reconnect to a different server. Users of the gRPC client connection brokered by the consul-server-connection-manager library will get this for free. The rate at which Consul will drain sessions to rebalance load is scaled dynamically based on the number of proxies in the catalog.	2 years ago