6 Commits (9ffdc2c6553c8ac24bd7c106d233d8623bf78868)

Author	SHA1	Message	Date
R.B. Boyer	8e22d80e35	connect: fix failover through a mesh gateway to a remote datacenter (#6259) ... Failover is pushed entirely down to the data plane by creating envoy clusters and putting each successive destination in a different load assignment priority band. For example this shows that normally requests go to 1.2.3.4:8080 but when that fails they go to 6.7.8.9:8080: - name: foo load_assignment: cluster_name: foo policy: overprovisioning_factor: 100000 endpoints: - priority: 0 lb_endpoints: - endpoint: address: socket_address: address: 1.2.3.4 port_value: 8080 - priority: 1 lb_endpoints: - endpoint: address: socket_address: address: 6.7.8.9 port_value: 8080 Mesh gateways route requests based solely on the SNI header tacked onto the TLS layer. Envoy currently only lets you configure the outbound SNI header at the cluster layer. If you try to failover through a mesh gateway you ideally would configure the SNI value per endpoint, but that's not possible in envoy today. This PR introduces a simpler way around the problem for now: 1. We identify any target of failover that will use mesh gateway mode local or remote and then further isolate any resolver node in the compiled discovery chain that has a failover destination set to one of those targets. 2. For each of these resolvers we will perform a small measurement of comparative healths of the endpoints that come back from the health API for the set of primary target and serial failover targets. We walk the list of targets in order and if any endpoint is healthy we return that target, otherwise we move on to the next target. 3. The CDS and EDS endpoints both perform the measurements in (2) for the affected resolver nodes. 4. For CDS this measurement selects which TLS SNI field to use for the cluster (note the cluster is always going to be named for the primary target) 5. For EDS this measurement selects which set of endpoints will populate the cluster. Priority tiered failover is ignored. One of the big downsides to this approach to failover is that the failover detection and correction is going to be controlled by consul rather than deferring that entirely to the data plane as with the prior version. This also means that we are bound to only failover using official health signals and cannot make use of data plane signals like outlier detection to affect failover. In this specific scenario the lack of data plane signals is ok because the effectiveness is already muted by the fact that the ultimate destination endpoints will have their data plane signals scrambled when they pass through the mesh gateway wrapper anyway so we're not losing much. Another related fix is that we now use the endpoint health from the underlying service, not the health of the gateway (regardless of failover mode).	5 years ago
Matt Keeler	3053342198	Envoy Mesh Gateway integration tests (#6187) ... * Allow setting the mesh gateway mode for an upstream in config files * Add envoy integration test for mesh gateways This necessitated many supporting changes in most of the other test cases. Add remote mode mesh gateways integration test	5 years ago
R.B. Boyer	aca2c5de3f	tests: adding new envoy integration tests for L7 service-resolvers (#6129) ... Additionally: - wait for bootstrap config entries to be applied - run the verify container in the host's PID namespace so we can kill envoys without mounting the docker socket * assert that we actually send HEALTHY and UNHEALTHY endpoints down in EDS during failover	5 years ago
R.B. Boyer	9138a97054	Fix bug in service-resolver redirects if the destination uses a default resolver. (#6122) ... Also: - add back an internal http endpoint to dump a compiled discovery chain for debugging purposes Before the CompiledDiscoveryChain.IsDefault() method would test: - is this chain just one resolver step? - is that resolver step just the default? But what I forgot to test: - is that resolver step for the same service that the chain represents? This last point is important because if you configured just one config entry: kind = "service-resolver" name = "web" redirect { service = "other" } and requested the chain for "web" you'd get back a **default** resolver for "other". In the xDS code the IsDefault() method is used to determine if this chain is "empty". If it is then we use the pre-discovery-chain logic that just uses data embedded in the Upstream object (and still lets the escape hatches function). In the example above that means certain parts of the xDS code were going to try referencing a cluster named "web..." despite the other parts of the xDS code maintaining clusters named "other...".	5 years ago
Paul Banks	9f656a2dc8	Fix envoy 1.10 exec (#5964) ... * Make exec test assert Envoy version - it was not rebuilding before and so often ran against wrong version. This makes 1.10 fail consistenty. * Switch Envoy exec to use a named pipe rather than FD magic since Envoy 1.10 doesn't support that. * Refactor to use an internal shim command for piping the bootstrap through. * Fmt. So sad that vscode golang fails so often these days. * go mod tidy * revert go mod tidy changes * Revert "ignore consul-exec tests until fixed (#5986)" This reverts commit 683262a686. * Review cleanups	6 years ago
Paul Banks	421ecd32fc	Connect: allow configuring Envoy for L7 Observability (#5558) ... * Add support for HTTP proxy listeners * Add customizable bootstrap configuration options * Debug logging for xDS AuthZ * Add Envoy Integration test suite with basic test coverage * Add envoy command tests to cover new cases * Add tracing integration test * Add gRPC support WIP * Merged changes from master Docker. get CI integration to work with same Dockerfile now * Make docker build optional for integration * Enable integration tests again! * http2 and grpc integration tests and fixes * Fix up command config tests * Store all container logs as artifacts in circle on fail * Add retries to outer part of stats measurements as we keep missing them in CI * Only dump logs on failing cases * Fix typos from code review * Review tidying and make tests pass again * Add debug logs to exec test. * Fix legit test failure caused by upstream rename in envoy config * Attempt to reduce cases of bad TLS handshake in CI integration tests * bring up the right service * Add prometheus integration test * Add test for denied AuthZ both HTTP and TCP * Try ANSI term for Circle	6 years ago