8 Commits (1.6.2)

Author	SHA1	Message	Date
R.B. Boyer	6adad71125	wan federation via mesh gateways (#6884) ... This is like a Möbius strip of code due to the fact that low-level components (serf/memberlist) are connected to high-level components (the catalog and mesh-gateways) in a twisty maze of references which make it hard to dive into. With that in mind here's a high level summary of what you'll find in the patch: There are several distinct chunks of code that are affected: * new flags and config options for the server * retry join WAN is slightly different * retry join code is shared to discover primary mesh gateways from secondary datacenters * because retry join logic runs in the *agent* and the results of that operation for primary mesh gateways are needed in the *server* there are some methods like `RefreshPrimaryGatewayFallbackAddresses` that must occur at multiple layers of abstraction just to pass the data down to the right layer. * new cache type `FederationStateListMeshGatewaysName` for use in `proxycfg/xds` layers * the function signature for RPC dialing picked up a new required field (the node name of the destination) * several new RPCs for manipulating a FederationState object: `FederationState:{Apply,Get,List,ListMeshGateways}` * 3 read-only internal APIs for debugging use to invoke those RPCs from curl * raft and fsm changes to persist these FederationStates * replication for FederationStates as they are canonically stored in the Primary and replicated to the Secondaries. * a special derivative of anti-entropy that runs in secondaries to snapshot their local mesh gateway `CheckServiceNodes` and sync them into their upstream FederationState in the primary (this works in conjunction with the replication to distribute addresses for all mesh gateways in all DCs to all other DCs) * a "gateway locator" convenience object to make use of this data to choose the addresses of gateways to use for any given RPC or gossip operation to a remote DC. This gets data from the "retry join" logic in the agent and also directly calls into the FSM. * RPC (`:8300`) on the server sniffs the first byte of a new connection to determine if it's actually doing native TLS. If so it checks the ALPN header for protocol determination (just like how the existing system uses the type-byte marker). * 2 new kinds of protocols are exclusively decoded via this native TLS mechanism: one for ferrying "packet" operations (udp-like) from the gossip layer and one for "stream" operations (tcp-like). The packet operations re-use sockets (using length-prefixing) to cut down on TLS re-negotiation overhead. * the server instances specially wrap the `memberlist.NetTransport` when running with gateway federation enabled (in a `wanfed.Transport`). The general gist is that if it tries to dial a node in the SAME datacenter (deduced by looking at the suffix of the node name) there is no change. If dialing a DIFFERENT datacenter it is wrapped up in a TLS+ALPN blob and sent through some mesh gateways to eventually end up in a server's :8300 port. * a new flag when launching a mesh gateway via `consul connect envoy` to indicate that the servers are to be exposed. This sets a special service meta when registering the gateway into the catalog. * `proxycfg/xds` notice this metadata blob to activate additional watches for the FederationState objects as well as the location of all of the consul servers in that datacenter. * `xds:` if the extra metadata is in place additional clusters are defined in a DC to bulk sink all traffic to another DC's gateways. For the current datacenter we listen on a wildcard name (`server.<dc>.consul`) that load balances all servers as well as one mini-cluster per node (`<node>.server.<dc>.consul`) * the `consul tls cert create` command got a new flag (`-node`) to help create an additional SAN in certs that can be used with this flavor of federation.	5 years ago
Matt Keeler	5934f803bf	Sync of OSS changes to support namespaces (#6909)	5 years ago
Pierre Souchay	4a4c63bda0	Ensure Consul is IPv6 compliant (#5468)	6 years ago
R.B. Boyer	f4a3b9d518	fix typos reported by golangci-lint:misspell (#5434)	6 years ago
Matt Keeler	acfd87c673	Improve Connect with Prepared Queries (#5291) ... Given a query like: ``` { "Name": "tagged-connect-query", "Service": { "Service": "foo", "Tags": ["tag"], "Connect": true } } ``` And a Consul configuration like: ``` { "services": [ "name": "foo", "port": 8080, "connect": { "sidecar_service": {} }, "tags": ["tag"] ] } ``` If you executed the query it would always turn up with 0 results. This was because the sidecar service was being created without any tags. You could instead make your config look like: ``` { "services": [ "name": "foo", "port": 8080, "connect": { "sidecar_service": { "tags": ["tag"] } }, "tags": ["tag"] ] } ``` However that is a bit redundant for most cases. This PR ensures that the tags and service meta of the parent service get copied to the sidecar service. If there are any tags or service meta set in the sidecar service definition then this copying does not take place. After the changes, the query will now return the expected results. A second change was made to prepared queries in this PR which is to allow filtering on ServiceMeta just like we allow for filtering on NodeMeta.	6 years ago
Paul Banks	c9217c958e	merge feedback: fix typos; actually use deliverLatest added previously but not plumbed in	6 years ago
Paul Banks	e812f5516a	Add -sidecar-for and new /agent/service/:service_id endpoint (#4691) ... - A new endpoint `/v1/agent/service/:service_id` which is a generic way to look up the service for a single instance. The primary value here is that it: - **supports hash-based blocking** and so; - **replaces `/agent/connect/proxy/:proxy_id`** as the mechanism the built-in proxy uses to read its config. - It's not proxy specific and so works for any service. - It has a temporary shim to call through to the existing endpoint to preserve current managed proxy config defaulting behaviour until that is removed entirely (tested). - The built-in proxy now uses the new endpoint exclusively for it's config - The built-in proxy now has a `-sidecar-for` flag that allows the service ID of the _target_ service to be specified, on the condition that there is exactly one "sidecar" proxy (that is one that has `Proxy.DestinationServiceID` set) for the service registered. - Several fixes for edge cases for SidecarService - A fix for `Alias` checks - when running locally they didn't update their state until some external thing updated the target. If the target service has no checks registered as below, then the alias never made it past critical.	6 years ago
Paul Banks	1e7eace066	Add SidecarService Syntax sugar to Service Definition (#4686) ... * Added new Config for SidecarService in ServiceDefinitions. * WIP: all the code needed for SidecarService is written... none of it is tested other than config :). Need API updates too. * Test coverage for the new sidecarServiceFromNodeService method. * Test API registratrion with SidecarService * Recursive Key Translation 🤦 * Add tests for nested sidecar defintion arrays to ensure they are translated correctly * Use dedicated internal state rather than Service Meta for tracking sidecars for deregistration. Add tests for deregistration. * API struct for agent register. No other endpoint should be affected yet. * Additional test cases to cover updates to API registrations	6 years ago