consul

Commit Graph

Author	SHA1	Message	Date
Derek Menteer	0ac8ae6c3b	Fix xDS deadlock due to syncLoop termination. (#20867 ) * Fix xDS deadlock due to syncLoop termination. This fixes an issue where agentless xDS streams can deadlock permanently until a server is restarted. When this issue occurs, no new proxies are able to successfully connect to the server. Effectively, the trigger for this deadlock stems from the following return statement: https://github.com/hashicorp/consul/blob/v1.18.0/agent/proxycfg-sources/catalog/config_source.go#L199-L202 When this happens, the entire `syncLoop()` terminates and stops consuming from the following channel: https://github.com/hashicorp/consul/blob/v1.18.0/agent/proxycfg-sources/catalog/config_source.go#L182-L192 Which results in the `ConfigSource.cleanup()` function never receiving a response and holding a mutex indefinitely: https://github.com/hashicorp/consul/blob/v1.18.0/agent/proxycfg-sources/catalog/config_source.go#L241-L247 Because this mutex is shared, it effectively deadlocks the server's ability to process new xDS streams. ---- The fix to this issue involves removing the `chan chan struct{}` used like an RPC-over-channels pattern and replacing it with two distinct channels: + `stopSyncLoopCh` - indicates that the `syncLoop()` should terminate soon. + `syncLoopDoneCh` - indicates that the `syncLoop()` has terminated. Splitting these two concepts out and deferring a `close(syncLoopDoneCh)` in the `syncLoop()` function ensures that the deadlock above should no longer occur. We also now evict xDS connections of all proxies for the corresponding `syncLoop()` whenever it encounters an irrecoverable error. This is done by hoisting the new `syncLoopDoneCh` upwards so that it's visible to the xDS delta processing. Prior to this fix, the behavior was to simply orphan them so they would never receive catalog-registration or service-defaults updates. * Add changelog.	9 months ago
Derek Menteer	0ac958f27b	Fix xDS missing endpoint race condition. (#19866 ) This fixes the following race condition: - Send update endpoints - Send update cluster - Recv ACK endpoints - Recv ACK cluster Prior to this fix, it would have resulted in the endpoints NOT existing in Envoy. This occurred because the cluster update implicitly clears the endpoints in Envoy, but we would never re-send the endpoint data to compensate for the loss, because we would incorrectly ACK the invalid old endpoint hash. Since the endpoint's hash did not actually change, they would not be resent. The fix for this is to effectively clear out the invalid pending ACKs for child resources whenever the parent changes. This ensures that we do not store the child's hash as accepted when the race occurs. An escape-hatch environment variable `XDS_PROTOCOL_LEGACY_CHILD_RESEND` was added so that users can revert back to the old legacy behavior in the event that this produces unknown side-effects. Visit the following thread for some extra context on why certainty around these race conditions is difficult: https://github.com/envoyproxy/envoy/issues/13009 This bug report and fix was mostly implemented by @ksmiley with some minor tweaks. Co-authored-by: Keith Smiley <ksmiley@salesforce.com>	12 months ago
John Murret	051f250edb	NET-5338 - NET-5338 - Run a v2 mode xds server (#18579 ) * NET-5338 - NET-5338 - Run a v2 mode xds server * fix linting	1 year ago
hashicorp-copywrite[bot]	5fb9df1640	[COMPLIANCE] License changes (#18443 ) * Adding explicit MPL license for sub-package This directory and its subdirectories (packages) contain files licensed with the MPLv2 `LICENSE` file in this directory and are intentionally licensed separately from the BSL `LICENSE` file at the root of this repository. * Adding explicit MPL license for sub-package This directory and its subdirectories (packages) contain files licensed with the MPLv2 `LICENSE` file in this directory and are intentionally licensed separately from the BSL `LICENSE` file at the root of this repository. * Updating the license from MPL to Business Source License Going forward, this project will be licensed under the Business Source License v1.1. Please see our blog post for more details at <Blog URL>, FAQ at www.hashicorp.com/licensing-faq, and details of the license at www.hashicorp.com/bsl. * add missing license headers * Update copyright file headers to BUSL-1.1 * Update copyright file headers to BUSL-1.1 * Update copyright file headers to BUSL-1.1 * Update copyright file headers to BUSL-1.1 * Update copyright file headers to BUSL-1.1 * Update copyright file headers to BUSL-1.1 * Update copyright file headers to BUSL-1.1 * Update copyright file headers to BUSL-1.1 * Update copyright file headers to BUSL-1.1 * Update copyright file headers to BUSL-1.1 * Update copyright file headers to BUSL-1.1 * Update copyright file headers to BUSL-1.1 * Update copyright file headers to BUSL-1.1 * Update copyright file headers to BUSL-1.1 * Update copyright file headers to BUSL-1.1 --------- Co-authored-by: hashicorp-copywrite[bot] <110428419+hashicorp-copywrite[bot]@users.noreply.github.com>	1 year ago
Michael Zalimeni	b1b05f0bac	[NET-4703] Prevent partial application of Envoy extensions (#18068 ) Prevent partial application of Envoy extensions Ensure that non-required extensions do not change xDS resources before exiting on failure by cloning proto messages prior to applying each extension. To support this change, also move `CanApply` checks up a layer and make them prior to attempting extension application, s.t. we avoid unnecessary copies where extensions can't be applied. Last, ensure that we do not allow panics from `CanApply` or `Extend` checks to escape the attempted extension application.	1 year ago
Dan Stough	8e3a1ddeb6	[OSS] Improve xDS Code Coverage - Endpoints and Misc (#18222 ) test: improve xDS endpoints code coverage	1 year ago
Eric Haberkorn	779647b948	Add Envoy and Consul version constraints to Envoy extensions (#17612 )	1 year ago
Michael Zalimeni	b8d2640429	Disable remote proxy patching except AWS Lambda (#17415 ) To avoid unintended tampering with remote downstreams via service config, refactor BasicEnvoyExtender and RuntimeConfig to disallow typical Envoy extensions from being applied to non-local proxies. Continue to allow this behavior for AWS Lambda and the read-only Validate builtin extensions. Addresses CVE-2023-2816.	2 years ago
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
Andrew Stucki	801a17329e	Fix attempt for test fail panics in xDS (#16319 ) * Fix attempt for test fail panics in xDS * switch to a mutex pointer	2 years ago
Chris S. Kim	a518893685	Fix various flaky tests (#16396 )	2 years ago
Nitya Dhanushkodi	b8b37c2357	refactor: remove troubleshoot module dependency on consul top level module (#16162 ) Ensure nothing in the troubleshoot go module depends on consul's top level module. This is so we can import troubleshoot into consul-k8s and not import all of consul. * turns troubleshoot into a go module [authored by @curtbushko] * gets the envoy protos into the troubleshoot module [authored by @curtbushko] * adds a new go module `envoyextensions` which has xdscommon and extensioncommon folders that both the xds package and the troubleshoot package can import * adds testing and linting for the new go modules * moves the unit tests in `troubleshoot/validateupstream` that depend on proxycfg/xds into the xds package, with a comment describing why those tests cannot be in the troubleshoot package * fixes all the imports everywhere as a result of these changes Co-authored-by: Curt Bushko <cbushko@gmail.com>	2 years ago
skpratt	a010902978	Remove legacy acl policies (#15922 ) * remove legacy tokens * remove legacy acl policies * flatten test policies to _prefix address oss feedback re: phrasing and tests	2 years ago
Nitya Dhanushkodi	8d4c3aa42c	refactor: move service to service validation to troubleshoot package (#16132 ) This is to reduce the dependency on xds from within the troubleshoot package.	2 years ago
Derek Menteer	b19c5a94c7	Add Envoy extension metrics. (#16114 )	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	e4a268e33e	Warn if ACL is enabled but no token is provided to Envoy (#15967 )	2 years ago
Matt Keeler	5afd4657ec	Protobuf Modernization (#15949 ) * Protobuf Modernization Remove direct usage of golang/protobuf in favor of google.golang.org/protobuf Marshallers (protobuf and json) needed some changes to account for different APIs. Moved to using the google.golang.org/protobuf/types/known/* for the well known types including replacing some custom Struct manipulation with whats available in the structpb well known type package. This also updates our devtools script to install protoc-gen-go from the right location so that files it generates conform to the correct interfaces. * Fix go-mod-tidy make target to work on all modules	2 years ago
Eric Haberkorn	4268c1c25c	Remove the `connect.enable_serverless_plugin` agent configuration option (#15710 )	2 years ago
Freddy	7f5f7e9cf9	Avoid blocking child type updates on parent ack (#15083 )	2 years ago
Paul Glass	bcda205f88	Add consul.xds.server.streamStart metric (#14957 ) This adds a new consul.xds.server.streamStart metric to measure the time taken to first generate xDS resources after an xDS stream is opened.	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
R.B. Boyer	0d6d16ddfb	add general runstep test helper instead of copying it all over the place (#13013 )	3 years ago
Evan Culver	000d0621b4	connect: Add Envoy 1.22 to integration tests, remove Envoy 1.18 (#12805 ) Co-authored-by: R.B. Boyer <rb@hashicorp.com>	3 years ago
Eric	cf3e517d0e	Create and wire up the serverless patcher	3 years ago
Eric Haberkorn	44609c0ca5	Merge pull request #12539 from hashicorp/make-xds-lib Make the xdscommon package	3 years ago
Mark Anderson	aaefe15613	Bulk acl message fixup oss (#12470 ) * First pass for helper for bulk changes Signed-off-by: Mark Anderson <manderson@hashicorp.com> * Convert ACLRead and ACLWrite to new form Signed-off-by: Mark Anderson <manderson@hashicorp.com> * AgentRead and AgentWRite Signed-off-by: Mark Anderson <manderson@hashicorp.com> * Fix EventWrite Signed-off-by: Mark Anderson <manderson@hashicorp.com> * KeyRead, KeyWrite, KeyList Signed-off-by: Mark Anderson <manderson@hashicorp.com> * KeyRing Signed-off-by: Mark Anderson <manderson@hashicorp.com> * NodeRead NodeWrite Signed-off-by: Mark Anderson <manderson@hashicorp.com> * OperatorRead and OperatorWrite Signed-off-by: Mark Anderson <manderson@hashicorp.com> * PreparedQuery Signed-off-by: Mark Anderson <manderson@hashicorp.com> * Intention partial Signed-off-by: Mark Anderson <manderson@hashicorp.com> * Fix ServiceRead, Write ,etc Signed-off-by: Mark Anderson <manderson@hashicorp.com> * Error check ServiceRead? Signed-off-by: Mark Anderson <manderson@hashicorp.com> * Fix Sessionread/Write Signed-off-by: Mark Anderson <manderson@hashicorp.com> * Fixup snapshot ACL Signed-off-by: Mark Anderson <manderson@hashicorp.com> * Error fixups for txn Signed-off-by: Mark Anderson <manderson@hashicorp.com> * Add changelog Signed-off-by: Mark Anderson <manderson@hashicorp.com> * Fixup review comments Signed-off-by: Mark Anderson <manderson@hashicorp.com>	3 years ago
Eric	f5c9fa6fa6	Make an xdscommon package that will be shared between Consul and Envoy plugins	3 years ago
R.B. Boyer	2a56e0055b	proxycfg: change how various proxycfg test helpers for making ConfigSnapshot copies works to be more correct and less error prone (#12531 ) Prior to this PR for the envoy xDS golden tests in the agent/xds package we were hand-creating a proxycfg.ConfigSnapshot structure in the proper format for input to the xDS generator. Over time this intermediate structure has gotten trickier to build correctly for the various tests. This PR proposes to switch to using the existing mechanism for turning a structs.NodeService and a sequence of cache.UpdateEvent copies into a proxycfg.ConfigSnapshot, as that is less error prone to construct and aligns more with how the data arrives. NOTE: almost all of this is in test-related code. I tried super hard to craft correct event inputs to get the golden files to be the same, or similar enough after construction to feel ok that i recreated the spirit of the original test cases.	3 years ago
Freddy	378a7258e3	Prevent xDS tight loop on cfg errors (#12195 )	3 years ago
R.B. Boyer	89bd1f57b5	xds: allow only one outstanding delta request at a time (#12236 ) Fixes #11876 This enforces that multiple xDS mutations are not issued on the same ADS connection at once, so that we can 100% control the order that they are applied. The original code made assumptions about the way multiple in-flight mutations were applied on the Envoy side that was incorrect.	3 years ago
R.B. Boyer	d2c0945f52	xds: fix for delta xDS reconnect bug in LDS/CDS (#12174 ) When a wildcard xDS type (LDS/CDS/SRDS) reconnects from a delta xDS stream, prior to envoy `1.19.0` it would populate the `ResourceNamesSubscribe` field with the full list of currently subscribed items, instead of simply omitting it to infer that it wanted everything (which is what wildcard mode means). This upstream issue was filed in envoyproxy/envoy#16063 and fixed in envoyproxy/envoy#16153 which went out in Envoy `1.19.0` and is fixed in later versions (later refactored in envoyproxy/envoy#16855). This PR conditionally forces LDS/CDS to be wildcard-only even when the connected Envoy requests a non-wildcard subscription, but only does so on versions prior to `1.19.0`, as we should not need to do this on later versions. This fixes the failure case as described here: #11833 (comment) Co-authored-by: Huan Wang <fredwanghuan@gmail.com>	3 years ago
R.B. Boyer	424f3cdd2c	proxycfg: introduce explicit UpstreamID in lieu of bare string (#12125 ) The gist here is that now we use a value-type struct proxycfg.UpstreamID as the map key in ConfigSnapshot maps where we used to use "upstream id-ish" strings. These are internal only and used just for bidirectional trips through the agent cache keyspace (like the discovery chain target struct). For the few places where the upstream id needs to be projected into xDS, that's what (proxycfg.UpstreamID).EnvoyID() is for. This lets us ALWAYS inject the partition and namespace into these things without making stuff like the golden testdata diverge.	3 years ago
Daniel Nephin	8ba760a2fc	acl: remove id and revision from Policy constructors The fields were removed in a previous commit. Also remove an unused constructor for PolicyMerger	3 years ago
Evan Culver	7e20a5e4f9	connect: remove support for Envoy 1.15	3 years ago
R.B. Boyer	b2d17ac448	xds: fix representation of incremental xDS subscriptions (#10987 ) Fixes #10563 The `resourceVersion` map was doing two jobs prior to this PR. The first job was to track what version of every resource we know envoy currently has. The second was to track subscriptions to those resources (by way of the empty string for a version). This mostly works out fine, but occasionally leads to consul removing a resource and accidentally (effectively) unsubscribing at the same time. The fix separates these two jobs. When all of the resources for a subscription are removed we continue to track the subscription until envoy explicitly unsubscribes	3 years ago
Dhia Ayachi	bc0e4f2f46	partition dicovery chains (#10983 ) * partition dicovery chains * fix default partition for OSS	3 years ago
R.B. Boyer	5b495ae8e0	xds: fix flaky protocol tests (#10410 )	4 years ago
R.B. Boyer	80c39f1083	xds: adding more delta protocol tests (#10398 ) Fixes #10125	4 years ago
R.B. Boyer	848ad8535b	xds: ensure that dependent xDS resources are reconfigured during primary type warming (#10381 ) Updates to a cluster will clear the associated endpoints, and updates to a listener will clear the associated routes. Update the incremental xDS logic to account for this implicit cleanup so that we can finish warming the clusters and listeners. Fixes #10379	4 years ago
R.B. Boyer	ede14b7c54	xds: emit a labeled gauge of connected xDS streams by version (#10243 ) Fixes #10099	4 years ago
R.B. Boyer	71d45a3460	Support Incremental xDS mode (#9855 ) This adds support for the Incremental xDS protocol when using xDS v3. This is best reviewed commit-by-commit and will not be squashed when merged. Union of all commit messages follows to give an overarching summary: xds: exclusively support incremental xDS when using xDS v3 Attempts to use SoTW via v3 will fail, much like attempts to use incremental via v2 will fail. Work around a strange older envoy behavior involving empty CDS responses over incremental xDS. xds: various cleanups and refactors that don't strictly concern the addition of incremental xDS support Dissolve the connectionInfo struct in favor of per-connection ResourceGenerators instead. Do a better job of ensuring the xds code uses a well configured logger that accurately describes the connected client. xds: pull out checkStreamACLs method in advance of a later commit xds: rewrite SoTW xDS protocol tests to use protobufs rather than hand-rolled json strings In the test we very lightly reuse some of the more boring protobuf construction helper code that is also technically under test. The important thing of the protocol tests is testing the protocol. The actual inputs and outputs are largely already handled by the xds golden output tests now so these protocol tests don't have to do double-duty. This also updates the SoTW protocol test to exclusively use xDS v2 which is the only variant of SoTW that will be supported in Consul 1.10. xds: default xds.Server.AuthCheckFrequency at use-time instead of construction-time	4 years ago

42 Commits (316d68cb847193f184d3a54fc103996151d1d68a)