Commit Graph

198 Commits

Author SHA1 Message Date
Daniel Nephin 1251c01b73 agent/cache: Make all cache options RegisterOptions
Previously the SupportsBlocking option was specified by a method on the
type, and all the other options were specified from RegisterOptions.

This change moves RegisterOptions to a method on the type, and moves
SupportsBlocking into the options struct.

Currently there are only 2 cache-types. So all cache-types can implement
this method by embedding a struct with those predefined values. In the
future if a cache type needs to be registered more than once with different
options it can remove the embedded type and implement the method in a way
that allows for paramaterization.
2020-04-16 18:56:34 -04:00
Kyle Havlovitz 6a5eba63ab
Ingress Gateways for TCP services (#7509)
* Implements a simple, tcp ingress gateway workflow

This adds a new type of gateway for allowing Ingress traffic into Connect from external services.

Co-authored-by: Chris Piraino <cpiraino@hashicorp.com>
2020-04-16 14:00:48 -07:00
Chris Piraino d7a870fd32
Fix flapping of mesh gateway connect-service watches (#7575) 2020-04-02 10:12:13 -05:00
Andy Lindeman 42224fe45c
proxycfg: support path exposed with non-HTTP2 protocol (#7510)
If a proxied service is a gRPC or HTTP2 service, but a path is exposed
using the HTTP1 or TCP protocol, Envoy should not be configured with
`http2ProtocolOptions` for the cluster backing the path.

A situation where this comes up is a gRPC service whose healthcheck or
metrics route (e.g. for Prometheus) is an HTTP1 service running on
a different port. Previously, if these were exposed either using
`Expose: { Checks: true }` or `Expose: { Paths: ... }`, Envoy would
still be configured to communicate with the path over HTTP2, which would
not work properly.
2020-04-02 09:35:04 +02:00
R.B. Boyer a7fb26f50f
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.
2020-03-09 15:59:02 -05:00
Matt Keeler 154eafe140
xDS Mesh Gateway Resolver Subset Fixes (#7294)
* xDS Mesh Gateway Resolver Subset Fixes

The first fix was that clusters were being generated for every service resolver subset regardless of there being any service instances of the associated service in that dc. The previous logic didn’t care at all but now it will omit generating those clusters unless we also have service instances that should be proxied.

The second fix was to respect the DefaultSubset of a service resolver so that mesh-gateways would configure the endpoints of the unnamed subset cluster to only those endpoints matched by the default subsets filters.

* Refactor the gateway endpoint generation to be a little easier to read
2020-02-19 11:57:55 -05:00
Lars Lehtonen 83a3136b5a
agent/proxycfg: fix dropped error in state.initWatchesMeshGateway() (#7267) 2020-02-18 14:41:01 +01:00
Matt Keeler 2524a028ea
OSS Changes for various config entry namespacing bugs (#7226) 2020-02-06 10:52:25 -05:00
Matt Keeler 111cb51fc8
Testing updates to support namespaced testing of the agent/xds… (#7185)
* Various testing updates to support namespaced testing of the agent/xds package

* agent/proxycfg package updates to support better namespace testing
2020-02-03 09:26:47 -05:00
Chris Piraino 3dd0b59793
Allow users to configure either unstructured or JSON logging (#7130)
* hclog Allow users to choose between unstructured and JSON logging
2020-01-28 17:50:41 -06:00
Matt Keeler 485a0a65ea
Updates to Config Entries and Connect for Namespaces (#7116) 2020-01-24 10:04:58 -05:00
Aestek 9329cbac0a Add support for dual stack IPv4/IPv6 network (#6640)
* Use consts for well known tagged adress keys

* Add ipv4 and ipv6 tagged addresses for node lan and wan

* Add ipv4 and ipv6 tagged addresses for service lan and wan

* Use IPv4 and IPv6 address in DNS
2020-01-17 09:54:17 -05:00
Matt Keeler 0b4bd016a9
Move where the service-resolver watch is done so that it happen… (#7025)
Before we were issuing 1 watch for every service in the services listing which would have caused the agent to process many more identical events simultaneously.
2020-01-10 10:30:13 -05:00
Matt Keeler 442924c35a
Sync of OSS changes to support namespaces (#6909) 2019-12-09 21:26:41 -05:00
R.B. Boyer a9343db838
xds: mesh gateway CDS requests are now allowed to receive an empty CDS reply (#6787)
This is the rest of the fix for #6543 that was incompletely fixed in #6576.
2019-11-26 15:55:13 -06:00
R.B. Boyer b091647090
agent: allow mesh gateways to initialize even if there are no connect services registered yet (#6576)
Fixes #6543

Also improved some of the proxycfg tests to cover snapshot validity
better.
2019-10-17 16:46:49 -05:00
R.B. Boyer 55fdae203f
agent: cache notifications work after error if the underlying RPC returns index=1 (#6547)
Fixes #6521

Ensure that initial failures to fetch an agent cache entry using the
notify API where the underlying RPC returns a synthetic index of 1
correctly recovers when those RPCs resume working.

The bug in the Cache.notifyBlockingQuery used to incorrectly "fix" the
index for the next query from 0 to 1 for all queries, when it should
have not done so for queries that errored.

Also fixed some things that made debugging difficult:

- config entry read/list endpoints send back QueryMeta headers
- xds event loops don't swallow the cache notification errors
2019-09-26 10:42:17 -05:00
Freddy 5eace88ce2
Expose HTTP-based paths through Connect proxy (#6446)
Fixes: #5396

This PR adds a proxy configuration stanza called expose. These flags register
listeners in Connect sidecar proxies to allow requests to specific HTTP paths from outside of the node. This allows services to protect themselves by only
listening on the loopback interface, while still accepting traffic from non
Connect-enabled services.

Under expose there is a boolean checks flag that would automatically expose all
registered HTTP and gRPC check paths.

This stanza also accepts a paths list to expose individual paths. The primary
use case for this functionality would be to expose paths for third parties like
Prometheus or the kubelet.

Listeners for requests to exposed paths are be configured dynamically at run
time. Any time a proxy, or check can be registered, a listener can also be
created.

In this initial implementation requests to these paths are not
authenticated/encrypted.
2019-09-25 20:55:52 -06:00
R.B. Boyer cc889443a5
connect: don't colon-hex-encode the AuthorityKeyId and SubjectKeyId fields in connect certs (#6492)
The fields in the certs are meant to hold the original binary
representation of this data, not some ascii-encoded version.

The only time we should be colon-hex-encoding fields is for display
purposes or marshaling through non-TLS mediums (like RPC).
2019-09-23 12:52:35 -05:00
R.B. Boyer ea65298070
connect: allow 'envoy_cluster_json' escape hatch to continue to function (#6378) 2019-08-22 15:11:56 -05:00
R.B. Boyer 0675e0606e
connect: generate the full SNI names for discovery targets in the compiler rather than in the xds package (#6340) 2019-08-19 13:03:03 -05:00
R.B. Boyer d6456fddeb
connect: introduce ExternalSNI field on service-defaults (#6324)
Compiling this will set an optional SNI field on each DiscoveryTarget.
When set this value should be used for TLS connections to the instances
of the target. If not set the default should be used.

Setting ExternalSNI will disable mesh gateway use for that target. It also 
disables several service-resolver features that do not make sense for an 
external service.
2019-08-19 12:19:44 -05:00
Mike Morris 88df658243
connect: remove managed proxies (#6220)
* connect: remove managed proxies implementation and all supporting config options and structs

* connect: remove deprecated ProxyDestination

* command: remove CONNECT_PROXY_TOKEN env var

* agent: remove entire proxyprocess proxy manager

* test: remove all managed proxy tests

* test: remove irrelevant managed proxy note from TestService_ServerTLSConfig

* test: update ContentHash to reflect managed proxy removal

* test: remove deprecated ProxyDestination test

* telemetry: remove managed proxy note

* http: remove /v1/agent/connect/proxy endpoint

* ci: remove deprecated test exclusion

* website: update managed proxies deprecation page to note removal

* website: remove managed proxy configuration API docs

* website: remove managed proxy note from built-in proxy config

* website: add note on removing proxy subdirectory of data_dir
2019-08-09 15:19:30 -04:00
R.B. Boyer 64fc002e03
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).
2019-08-05 13:30:35 -05:00
R.B. Boyer 0165e93517
connect: expose an API endpoint to compile the discovery chain (#6248)
In addition to exposing compilation over the API cleaned up the structures that would be exchanged to be cleaner and easier to support and understand.

Also removed ability to configure the envoy OverprovisioningFactor.
2019-08-02 15:34:54 -05:00
R.B. Boyer 782c647bf4
connect: simplify the compiled discovery chain data structures (#6242)
This should make them better for sending over RPC or the API.

Instead of a chain implemented explicitly like a linked list (nodes
holding pointers to other nodes) instead switch to a flat map of named
nodes with nodes linking other other nodes by name. The shipped
structure is just a map and a string to indicate which key to start
from.

Other changes:

* inline the compiler option InferDefaults as true

* introduce compiled target config to avoid needing to send back
  additional maps of Resolvers; future target-specific compiled state
  can go here

* move compiled MeshGateway out of the Resolver and into the
  TargetConfig where it makes more sense.
2019-08-01 22:44:05 -05:00
R.B. Boyer 4666599e18
connect: reconcile how upstream configuration works with discovery chains (#6225)
* connect: reconcile how upstream configuration works with discovery chains

The following upstream config fields for connect sidecars sanely
integrate into discovery chain resolution:

- Destination Namespace/Datacenter: Compilation occurs locally but using
different default values for namespaces and datacenters. The xDS
clusters that are created are named as they normally would be.

- Mesh Gateway Mode (single upstream): If set this value overrides any
value computed for any resolver for the entire discovery chain. The xDS
clusters that are created may be named differently (see below).

- Mesh Gateway Mode (whole sidecar): If set this value overrides any
value computed for any resolver for the entire discovery chain. If this
is specifically overridden for a single upstream this value is ignored
in that case. The xDS clusters that are created may be named differently
(see below).

- Protocol (in opaque config): If set this value overrides the value
computed when evaluating the entire discovery chain. If the normal chain
would be TCP or if this override is set to TCP then the result is that
we explicitly disable L7 Routing and Splitting. The xDS clusters that
are created may be named differently (see below).

- Connect Timeout (in opaque config): If set this value overrides the
value for any resolver in the entire discovery chain. The xDS clusters
that are created may be named differently (see below).

If any of the above overrides affect the actual result of compiling the
discovery chain (i.e. "tcp" becomes "grpc" instead of being a no-op
override to "tcp") then the relevant parameters are hashed and provided
to the xDS layer as a prefix for use in naming the Clusters. This is to
ensure that if one Upstream discovery chain has no overrides and
tangentially needs a cluster named "api.default.XXX", and another
Upstream does have overrides for "api.default.XXX" that they won't
cross-pollinate against the operator's wishes.

Fixes #6159
2019-08-01 22:03:34 -05:00
Matt Keeler 7e69646a77
Fix prepared query upstream endpoint generation (#6236)
Use the correct SNI value for prepared query upstreams
2019-07-29 11:15:55 -04:00
R.B. Boyer 2bfad66efa
connect: rework how the service resolver subset OnlyPassing flag works (#6173)
The main change is that we no longer filter service instances by health,
preferring instead to render all results down into EDS endpoints in
envoy and merely label the endpoints as HEALTHY or UNHEALTHY.

When OnlyPassing is set to true we will force consul checks in a
'warning' state to render as UNHEALTHY in envoy.

Fixes #6171
2019-07-23 20:20:24 -05:00
R.B. Boyer 1cc6d07d0f
add test for discovery chain agent cache-type (#6130) 2019-07-15 10:09:52 -05:00
Matt Keeler 3914ec5c62
Various Gateway Fixes (#6093)
* Ensure the mesh gateway configuration comes back in the api within each upstream

* Add a test for the MeshGatewayConfig in the ToAPI functions

* Ensure we don’t use gateways for dc local connections

* Update the svc kind index for deletions

* Replace the proxycfg.state cache with an interface for testing

Also start implementing proxycfg state testing.

* Update the state tests to verify some gateway watches for upstream-targets of a discovery chain.
2019-07-12 17:19:37 -04:00
R.B. Boyer 72a8195839
implement some missing service-router features and add more xDS testing (#6065)
- also implement OnlyPassing filters for non-gateway clusters
2019-07-12 14:16:21 -05:00
Jack Pearkes 2b1761bab3 Make cluster names SNI always (#6081)
* Make cluster names SNI always

* Update some tests

* Ensure we check for prepared query types

* Use sni for route cluster names

* Proper mesh gateway mode defaulting when the discovery chain is used

* Ignore service splits from PatchSliceOfMaps

* Update some xds golden files for proper test output

* Allow for grpc/http listeners/cluster configs with the disco chain

* Update stats expectation
2019-07-08 12:48:48 +01:00
Matt Keeler 35a839952b Fix Internal.ServiceDump blocking (#6076)
maxIndexWatchTxn was only watching the IndexEntry of the max index of all the entries. It needed to watch all of them regardless of which was the max.

Also plumbed the query source through in the proxy config to help better track requests.
2019-07-04 16:17:49 +01:00
hashicorp-ci 8adbb8471e Merge Consul OSS branch 'master' at commit a58d8e91ac258c04174afca3818cbdae23aa8d3f 2019-07-03 02:00:31 +00:00
Matt Keeler b7ca53f9e3 Update xds/proxycfg tests to use the same looking trust domain as a normal system
This is to prevent confusion about what our SNI fields actually look like.
2019-07-02 10:29:37 -04:00
Matt Keeler e916f2d954 Implement mesh gateway management of service subsets
Fixup some error handling
2019-07-02 10:29:37 -04:00
R.B. Boyer bccbb2b4ae
activate most discovery chain features in xDS for envoy (#6024) 2019-07-01 22:10:51 -05:00
Matt Keeler bcb3439c4c
Fix some tests that I broke when refactoring the ConfigSnapshot (#6051)
* Fix some tests that I broke when refactoring the ConfigSnapshot

* Make sure the MeshGateway config is added to all the right api structs

* Fix some more tests
2019-07-01 19:47:58 -04:00
Pierre Souchay 2e9370ba11 Bump timeout in TestManager_BasicLifecycle (#6030) 2019-07-01 17:02:00 -06:00
Matt Keeler 39bb0e3e77 Implement Mesh Gateways
This includes both ingress and egress functionality.
2019-07-01 16:28:30 -04:00
R.B. Boyer 32f1e11b49
fix test that was failing after #6013 (#6026) 2019-06-27 09:31:19 -05:00
Matt Keeler b13dc6289b
Prepare for having different service kinds that are all generic… (#6013)
Default to internal error when service kind is unknown
2019-06-24 15:05:36 -04:00
Paul Banks d6c0557e86
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
2019-04-29 17:27:57 +01:00
R.B. Boyer 91e78e00c7
fix typos reported by golangci-lint:misspell (#5434) 2019-03-06 11:13:28 -06:00
Matt Keeler 8e54856c46
Implement prepared query upstreams watching for envoy (#5224)
Fixes #4969 

This implements non-blocking request polling at the cache layer which is currently only used for prepared queries. Additionally this enables the proxycfg manager to poll prepared queries for use in envoy proxy upstreams.
2019-01-18 12:44:04 -05:00
Paul Banks 0523efa2fe merge feedback: fix typos; actually use deliverLatest added previously but not plumbed in 2018-10-10 16:55:34 +01:00
Paul Banks 10af44006a Proxy Config Manager (#4729)
* Proxy Config Manager

This component watches for local state changes on the agent and ensures that each service registered locally with Kind == connect-proxy has it's state being actively populated in the cache.

This serves two purposes:
 1. For the built-in proxy, it ensures that the state needed to accept connections is available in RAM shortly after registration and likely before the proxy actually starts accepting traffic.
 2. For (future - next PR) xDS server and other possible future proxies that require _push_ based config discovery, this provides a mechanism to subscribe and be notified about updates to a proxy instance's config including upstream service discovery results.

* Address review comments

* Better comments; Better delivery of latest snapshot for slow watchers; Embed Config

* Comment typos

* Add upstream Stringer for funsies
2018-10-10 16:55:34 +01:00