Commit Graph

244 Commits

Author SHA1 Message Date
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 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 155cdf022f
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
2019-07-24 17:01:42 -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 e060748d3f
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
2019-07-23 20:08:36 -05:00
R.B. Boyer df0d932296
tests: when running envoy integration tests try to limit container bleedover between cases (#6148) 2019-07-17 09:20:10 -05:00
R.B. Boyer 5932bcbe72
unknown fields now fail, so omit these unimplemented fields (#6125) 2019-07-12 14:04:15 -05:00
R.B. Boyer 9e1e9aad2e
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...".
2019-07-12 12:21:25 -05:00
R.B. Boyer c7df80ebf9
tests: further reduce envoy integration test flakiness (#6112)
In addition to waiting until s2 shows up healthy in the Catalog, wait
until s2 endpoints show up healthy via EDS in the s1 upstream clusters.
2019-07-12 11:12:56 -05:00
R.B. Boyer f8033254c7 test: for envoy integration tests bump the time to wait for the upstream to be healthy (#6109) 2019-07-10 18:07:47 -04:00
R.B. Boyer 2165e97efa
test: for envoy integration tests, wait until 's2' is healthy in consul before interrogating envoy (#6108)
When the envoy healthy panic threshold was explicitly disabled as part
of L7 traffic management it changed how envoy decided to load balance to
endpoints in a cluster. This only matters when envoy is in "panic mode"
aka "when you have a bunch of unhealthy endpoints". Panic mode sends
traffic to unhealthy instances in certain circumstances.

Note: Prior to explicitly disabling the healthy panic threshold, the
default value is 50%.

What was happening is that the test harness was bringing up consul the
sidecars, and the service instances all at once and sometimes the
proxies wouldn't have time to be checked by consul to be labeled as
'passing' in the catalog before a round of EDS happened.

The xDS server in consul effectively queries /v1/health/connect/s2 and
gets 1 result, but that one result has a 'critical' check so the xDS
server sends back that endpoint labeled as UNHEALTHY.

Envoy sees that 100% of the endpoints in the cluster are unhealthy and
would enter panic mode and still send traffic to s2. This is why the
test suites PRIOR to disabling the healthy panic threshold worked. They
were _incorrectly_ passing.

When the healthy panic threshol is disabled, envoy never enters panic
mode in this situation and thus the cluster has zero healthy endpoints
so load balancing goes nowhere and the tests fail.

Why does this only affect the test suites for envoy 1.8.0? My guess is
that https://github.com/envoyproxy/envoy/pull/4442 was merged into the
1.9.x series and somehow that plays a role.

This PR modifies the bats scripts to explicitly wait until the upstream
sidecar is healthy as measured by /v1/health/connect/s2?passing BEFORE
trying to interrogate envoy which should make the tests less racy.
2019-07-10 15:58:25 -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
R.B. Boyer bccbb2b4ae
activate most discovery chain features in xDS for envoy (#6024) 2019-07-01 22:10:51 -05:00
Hans Hasselberg 73c4e9f07c
tls: auto_encrypt enables automatic RPC cert provisioning for consul clients (#5597) 2019-06-27 22:22:07 +02:00
Paul Banks e33e41195c
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 683262a6869033cb79e68fa1dba0f9ea83e9187d.

* Review cleanups
2019-06-21 16:06:25 +01:00
Alvin Huang e6419d4c23
ignore consul-exec tests until fixed (#5986) 2019-06-18 15:45:32 -04:00
Paul Banks 737be347eb
Upgrade xDS (go-control-plane) API to support Envoy 1.10. (#5872)
* Upgrade xDS (go-control-plane) API to support Envoy 1.10.

This includes backwards compatibility shim to work around the ext_authz package rename in 1.10.

It also adds integration test support in CI for 1.10.0.

* Fix go vet complaints

* go mod vendor

* Update Envoy version info in docs

* Update website/source/docs/connect/proxies/envoy.md
2019-06-07 07:10:43 -05:00
Paul Banks 2fb98e476a
Envoy integration test improvements (#5797)
* Grab consul logs on integration test failures too and don't remove .gitignore

* Don't wipe logs so we have some artifacts to upload at the end
2019-05-21 14:17:41 +01:00
Alvin Huang 7fd179c6dd
remove container after docker run exits (#5798) 2019-05-07 10:13:07 -04:00
Paul Banks c04f4a25ed
Make central conf test work when run in a suite. (#5767)
* Make central conf test work when run in a suite.

This switches integration tests to hard restart Consul each time which causes less surpise when some tests need to set configs that don't work on consul reload. This also increases the isolation and repeatability of the tests by dropping Consul's state entirely for each case run.

* Remove aborted attempt to make restart optional.
2019-05-02 12:53:06 +01:00
Paul Banks 078f4cf5bb Add integration test for central config; fix central config WIP (#5752)
* Add integration test for central config; fix central config WIP

* Add integration test for central config; fix central config WIP

* Set proxy protocol correctly and begin adding upstream support

* Add upstreams to service config cache key and start new notify watcher if they change.

This doesn't update the tests to pass though.

* Fix some merging logic get things working manually with a hack (TODO fix properly)

* Simplification to not allow enabling sidecars centrally - it makes no sense without upstreams anyway

* Test compile again and obvious ones pass. Lots of failures locally not debugged yet but may be flakes. Pushing up to see what CI does

* Fix up service manageer and API test failures

* Remove the enable command since it no longer makes much sense without being able to turn on sidecar proxies centrally

* Remove version.go hack - will make integration test fail until release

* Remove unused code from commands and upstream merge

* Re-bump version to 1.5.0
2019-05-01 16:39:31 -07:00
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
Hans Hasselberg 08502cfa61
snapshot: read meta.json correctly. (#5193)
* snapshot: read meta.json correctly.

Fixes #4452.
2019-01-08 17:06:28 +01:00
Paul Banks 4b2f1a240c
Update test certificates that expire this year to be way in the future 2018-05-12 10:15:45 +01:00
James Phillips 532cafe0af
Adds enable_agent_tls_for_checks configuration option which allows (#3661)
HTTP health checks for services requiring 2-way TLS to be checked
using the agent's credentials.
2017-11-07 18:22:09 -08:00
Frank Schroeder 74859ff3c0 test: replace porter tool with freeport lib
This patch removes the porter tool which hands out free ports from a
given range with a library which does the same thing. The challenge for
acquiring free ports in concurrent go test runs is that go packages are
tested concurrently and run in separate processes. There has to be some
inter-process synchronization in preventing processes allocating the
same ports.

freeport allocates blocks of ports from a range expected to be not in
heavy use and implements a system-wide mutex by binding to the first
port of that block for the lifetime of the application. Ports are then
provided sequentially from that block and are tested on localhost before
being returned as available.
2017-10-21 22:01:09 +02:00
Alex Dadgar 098d71c04d Testutil falls back to random ports w/o porter (#3604)
* Testutil falls back to random ports w/o porter

This PR allows the testutil server to be used without porter.

* Adds sterner-sounding fallback comments.
2017-10-20 16:46:13 -07:00
Frank Schroeder 2a2debcff8 porter: add better warning if missing 2017-10-18 09:58:58 +02:00
James Phillips 20a8d520d9
Makes porter take over if an existing instance died. 2017-09-26 16:25:18 -07:00
James Phillips 533fc8f6ce
Makes porter more conservative by trying to connect to ports before handing them out. 2017-09-25 17:42:53 -07:00
Frank Schröder 69a088ca85 New config parser, HCL support, multiple bind addrs (#3480)
* new config parser for agent

This patch implements a new config parser for the consul agent which
makes the following changes to the previous implementation:

 * add HCL support
 * all configuration fragments in tests and for default config are
   expressed as HCL fragments
 * HCL fragments can be provided on the command line so that they
   can eventually replace the command line flags.
 * HCL/JSON fragments are parsed into a temporary Config structure
   which can be merged using reflection (all values are pointers).
   The existing merge logic of overwrite for values and append
   for slices has been preserved.
 * A single builder process generates a typed runtime configuration
   for the agent.

The new implementation is more strict and fails in the builder process
if no valid runtime configuration can be generated. Therefore,
additional validations in other parts of the code should be removed.

The builder also pre-computes all required network addresses so that no
address/port magic should be required where the configuration is used
and should therefore be removed.

* Upgrade github.com/hashicorp/hcl to support int64

* improve error messages

* fix directory permission test

* Fix rtt test

* Fix ForceLeave test

* Skip performance test for now until we know what to do

* Update github.com/hashicorp/memberlist to update log prefix

* Make memberlist use the default logger

* improve config error handling

* do not fail on non-existing data-dir

* experiment with non-uniform timeouts to get a handle on stalled leader elections

* Run tests for packages separately to eliminate the spurious port conflicts

* refactor private address detection and unify approach for ipv4 and ipv6.

Fixes #2825

* do not allow unix sockets for DNS

* improve bind and advertise addr error handling

* go through builder using test coverage

* minimal update to the docs

* more coverage tests fixed

* more tests

* fix makefile

* cleanup

* fix port conflicts with external port server 'porter'

* stop test server on error

* do not run api test that change global ENV concurrently with the other tests

* Run remaining api tests concurrently

* no need for retry with the port number service

* monkey patch race condition in go-sockaddr until we understand why that fails

* monkey patch hcl decoder race condidtion until we understand why that fails

* monkey patch spurious errors in strings.EqualFold from here

* add test for hcl decoder race condition. Run with go test -parallel 128

* Increase timeout again

* cleanup

* don't log port allocations by default

* use base command arg parsing to format help output properly

* handle -dc deprecation case in Build

* switch autopilot.max_trailing_logs to int

* remove duplicate test case

* remove unused methods

* remove comments about flag/config value inconsistencies

* switch got and want around since the error message was misleading.

* Removes a stray debug log.

* Removes a stray newline in imports.

* Fixes TestACL_Version8.

* Runs go fmt.

* Adds a default case for unknown address types.

* Reoders and reformats some imports.

* Adds some comments and fixes typos.

* Reorders imports.

* add unix socket support for dns later

* drop all deprecated flags and arguments

* fix wrong field name

* remove stray node-id file

* drop unnecessary patch section in test

* drop duplicate test

* add test for LeaveOnTerm and SkipLeaveOnInt in client mode

* drop "bla" and add clarifying comment for the test

* split up tests to support enterprise/non-enterprise tests

* drop raft multiplier and derive values during build phase

* sanitize runtime config reflectively and add test

* detect invalid config fields

* fix tests with invalid config fields

* use different values for wan sanitiziation test

* drop recursor in favor of recursors

* allow dns_config.udp_answer_limit to be zero

* make sure tests run on machines with multiple ips

* Fix failing tests in a few more places by providing a bind address in the test

* Gets rid of skipped TestAgent_CheckPerformanceSettings and adds case for builder.

* Add porter to server_test.go to make tests there less flaky

* go fmt
2017-09-25 11:40:42 -07:00
Frank Schroeder 1a8499316f
test: log exit code in cluster.bash 2017-06-08 14:06:10 +02:00
Frank Schroeder 42fe8e513e
test: add script for starting a multi-node cluster 2017-06-07 13:08:19 +02:00
James Phillips 12a0a9ceb1
Updates unit test certs for another year. 2017-06-05 19:22:20 -07:00
James Phillips 98bcfd3b45 Updates expired test certs and includes a script to generate new certs. 2017-05-12 09:28:21 +02:00
Kyle Havlovitz cdd8b5b880
Add tls client options to api/cli 2017-04-14 13:37:29 -07:00
Kyle Havlovitz 2b02fb575b
Add utility types to enable checking for unset flags 2017-02-07 20:14:41 -05:00
James Phillips bc29610124 Adds support for snapshots and restores. (#2396)
* Updates Raft library to get new snapshot/restore API.

* Basic backup and restore working, but need some cleanup.

* Breaks out a snapshot module and adds a SHA256 integrity check.

* Adds snapshot ACL and fills in some missing comments.

* Require a consistent read for snapshots.

* Make sure snapshot works if ACLs aren't enabled.

* Adds a bit of package documentation.

* Returns an empty response from restore to avoid EOF errors.

* Adds API client support for snapshots.

* Makes internal file names match on-disk file snapshots.

* Adds DC and token coverage for snapshot API test.

* Adds missing documentation.

* Adds a unit test for the snapshot client endpoint.

* Moves the connection pool out of the client for easier testing.

* Fixes an incidental issue in the prepared query unit test.

I realized I had two servers in bootstrap mode so this wasn't a good setup.

* Adds a half close to the TCP stream and fixes panic on error.

* Adds client and endpoint tests for snapshots.

* Moves the pool back into the snapshot RPC client.

* Adds a TLS test and fixes half-closes for TLS connections.

* Tweaks some comments.

* Adds a low-level snapshot test.

This is independent of Consul so we can pull this out into a library
later if we want to.

* Cleans up snapshot and archive and completes archive tests.

* Sends a clear error for snapshot operations in dev mode.

Snapshots require the Raft snapshots to be readable, which isn't supported
in dev mode. Send a clear error instead of a deep-down Raft one.

* Adds docs for the snapshot endpoint.

* Adds a stale mode and index feedback for snapshot saves.

This gives folks a way to extract data even if the cluster has no
leader.

* Changes the internal format of a snapshot from zip to tgz.

* Pulls in Raft fix to cancel inflight before a restore.

* Pulls in new Raft restore interface.

* Adds metadata to snapshot saves and a verify function.

* Adds basic save and restore snapshot CLI commands.

* Gets rid of tarball extensions and adds restore message.

* Fixes an incidental bad link in the KV docs.

* Adds documentation for the snapshot CLI commands.

* Scuttle any request body when a snapshot is saved.

* Fixes archive unit test error message check.

* Allows for nil output writers in snapshot RPC handlers.

* Renames hash list Decode to DecodeAndVerify.

* Closes the client connection for snapshot ops.

* Lowers timeout for restore ops.

* Updates Raft vendor to get new Restore signature and integrates with Consul.

* Bounces the leader's internal state when we do a restore.
2016-10-25 19:20:24 -07:00
James Phillips 9e2b282589 Re-ups the snake oil certs for the unit tests.
Ref #979 for a link to the blog with the commands to use :-)
2016-06-04 12:13:56 -07:00
James Phillips df39128da4 Reissues cert for the unit tests, which expired a few days ago. 2015-05-27 15:08:58 -07:00
Armon Dadgar 4c93091f45 test: Adding hostname certs 2015-05-11 16:06:34 -07:00
Nelson Elhage 627b2e455f Add some basic smoke tests for wrapTLSclient.
Check the success case, and check that we reject a self-signed
certificate.
2014-06-29 18:11:32 -07:00
William Tisäter 405dfd99c1 Fix tests on Go 1.3 and greater
Go 1.3 and greater require ServerName or InsecureSkipVerify to be set.

https://codereview.appspot.com/67010043/
2014-05-27 00:47:47 +02:00
Armon Dadgar 07f4700196 Adding testing certificates 2014-04-07 15:07:00 -07:00