Commit Graph

498 Commits (c384f244608d87a37460148adc41f9c287385387)

Author SHA1 Message Date
Nathan Coleman 1074252361
api-gateway: stop adding all header filters to virtual host when generating xDS (#17644)
* Add header filter to api-gateway xDS golden test

* Stop adding all header filters to virtual host when generating xDS for api-gateway

* Regenerate xDS golden file for api-gateway w/ header filter
2023-06-12 12:06:04 -04:00
Eric Haberkorn 779647b948
Add Envoy and Consul version constraints to Envoy extensions (#17612) 2023-06-08 10:26:11 -04:00
Matt Keeler 77f44fa878
Various bits of cleanup detected when using Go Workspaces (#17462)
TLDR with many modules the versions included in each diverged quite a bit. Attempting to use Go Workspaces produces a bunch of errors.

This commit:

1. Fixes envoy-library-references.sh to work again
2. Ensures we are pulling in go-control-plane@v0.11.0 everywhere (previously it was at that version in some modules and others were much older)
3. Remove one usage of golang/protobuf that caused us to have a direct dependency on it.
4. Remove deprecated usage of the Endpoint field in the grpc resolver.Target struct. The current version of grpc (v1.55.0) has removed that field and recommended replacement with URL.Opaque and calls to the Endpoint() func when needing to consume the previous field.
4. `go work init <all the paths to go.mod files>` && `go work sync`. This syncrhonized versions of dependencies from the main workspace/root module to all submodules
5. Updated .gitignore to ignore the go.work and go.work.sum files. This seems to be standard practice at the moment.
6. Update doc comments in protoc-gen-consul-rate-limit to be go fmt compatible
7. Upgraded makefile infra to perform linting, testing and go mod tidy on all modules in a flexible manner.
8. Updated linter rules to prevent usage of golang/protobuf
9. Updated a leader peering test to account for an extra colon in a grpc error message.
2023-06-05 16:08:39 -04:00
Michael Zalimeni ad03a5d0f2
Avoid panic applying TProxy Envoy extensions (#17537)
When UpstreamEnvoyExtender was introduced, some code was left duplicated
between it and BasicEnvoyExtender. One path in that code panics when a
TProxy listener patch is attempted due to no upstream data in
RuntimeConfig matching the local service (which would only happen in
rare cases).

Instead, we can remove the special handling of upstream VIPs from
BasicEnvoyExtender entirely, greatly simplifying the listener filter
patch code and avoiding the panic. UpstreamEnvoyExtender, which needs
this code to function, is modified to ensure a panic does not occur.

This also fixes a second regression in which the Lua extension was not
applied to TProxy outbound listeners.
2023-06-01 13:04:39 -04:00
Eric Haberkorn d99312b86e
Add Upstream Service Targeting to Property Override Extension (#17517)
* add upstream service targeting to property override extension

* Also add baseline goldens for service specific property override extension.
* Refactor the extension framework to put more logic into the templates.

* fix up the golden tests
2023-05-30 14:53:42 -04:00
Ronald 55e283dda9
[NET-3092] JWT Verify claims handling (#17452)
* [NET-3092] JWT Verify claims handling
2023-05-30 13:38:33 -04:00
Chris Thain 65b8ccdc1b
Enable Network filters for Wasm Envoy Extension (#17505) 2023-05-30 07:17:33 -07:00
Michael Zalimeni e1df0f28bd
Support `Listener` and `ClusterLoadAssignment` in `property-override` (#17497)
* Support Listener in Property Override

Add support for patching `Listener` resources via the builtin
`property-override` extension.

Refactor existing listener patch code in `BasicEnvoyExtender` to
simplify addition of resource support.

* Support ClusterLoadAssignment in Property Override

Add support for patching `ClusterLoadAssignment` resources via the
builtin `property-override` extension.
2023-05-29 09:42:35 -04:00
Michael Zalimeni 5a46a8c604
Add `builtin/property-override` Envoy Extension (#17487)
`property-override` is an extension that allows for arbitrarily
patching Envoy resources based on resource matching filters. Patch
operations resemble a subset of the JSON Patch spec with minor
differences to facilitate patching pre-defined (protobuf) schemas.

See Envoy Extension product documentation for more details.

Co-authored-by: Eric Haberkorn <eric.haberkorn@hashicorp.com>
Co-authored-by: Kyle Havlovitz <kyle@hashicorp.com>
2023-05-26 19:52:09 +00:00
Chris Thain 516eb4febc
Add `builtin/ext-authz` Envoy Extension (#17495) 2023-05-26 12:22:54 -07:00
Eric Haberkorn 17a280d51b
This fixes an issue where TCP services that are exported cannot be configured to failover. (#17469)
This will likely happen frequently with sameness groups. Relaxing this
constraint is harmless for failover because xds/endpoints exludes cross
partition and peer endpoints.
2023-05-25 12:50:20 -04:00
sarahalsmiller b147323fb0
xds: Remove APIGateway ToIngress function (#17453)
* xds generation for routes api gateway

* Update gateway.go

* move buildHttpRoute into xds package

* Update agent/consul/discoverychain/gateway.go

* remove unneeded function

* convert http route code to only run for http protocol to future proof code path

* Update agent/consul/discoverychain/gateway.go

Co-authored-by: Mike Morris <mikemorris@users.noreply.github.com>

* fix tests, clean up http check logic

* clean up todo

* Fix casing in docstring

* Fix import block, adjust docstrings

* Rename func

* Consolidate docstring onto single line

* Remove ToIngress() conversion for APIGW, which generates its own xDS now

* update name and comment

* use constant value

* use constant

* rename readyUpstreams to readyListeners to better communicate what that function is doing

---------

Co-authored-by: Mike Morris <mikemorris@users.noreply.github.com>
Co-authored-by: Nathan Coleman <nathan.coleman@hashicorp.com>
2023-05-25 15:16:37 +00:00
sarahalsmiller 6d35edc21c
xds: generate routes directly from API gateway snapshot (#17392)
* xds generation for routes api gateway

* Update gateway.go

* move buildHttpRoute into xds package

* Update agent/consul/discoverychain/gateway.go

* remove unneeded function

* convert http route code to only run for http protocol to future proof code path

* Update agent/consul/discoverychain/gateway.go

Co-authored-by: Mike Morris <mikemorris@users.noreply.github.com>

* fix tests, clean up http check logic

* clean up todo

* Fix casing in docstring

* Fix import block, adjust docstrings

* update name and comment

* use constant value

* use constant

---------

Co-authored-by: Mike Morris <mikemorris@users.noreply.github.com>
Co-authored-by: Nathan Coleman <nathan.coleman@hashicorp.com>
2023-05-25 09:54:55 -05:00
Paul Glass 07ff9d3d64
Use original_dst filter instead of use_original_dst field (#17433) 2023-05-24 12:01:17 -05:00
Ronald ddb25cec0e
[NET-3092] Improve jwt-provider tests (#17430)
* [NET-3092] more tests, prior to verify claims work
2023-05-24 10:30:48 -04:00
Dan Stough d935c7b466
[OSS] gRPC Blocking Queries (#17426)
* feat: initial grpc blocking queries

* changelog and docs update
2023-05-23 17:29:10 -04:00
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.
2023-05-23 11:55:06 +00:00
sarahalsmiller e2a81aa8bd
xds: generate listeners directly from API gateway snapshot (#17398)
* API Gateway XDS Primitives, endpoints and clusters (#17002)

* XDS primitive generation for endpoints and clusters

Co-authored-by: Nathan Coleman <nathan.coleman@hashicorp.com>

* server_test

* deleted extra file

* add missing parents to test

---------

Co-authored-by: Nathan Coleman <nathan.coleman@hashicorp.com>

* Routes for API Gateway (#17158)

* XDS primitive generation for endpoints and clusters

Co-authored-by: Nathan Coleman <nathan.coleman@hashicorp.com>

* server_test

* deleted extra file

* add missing parents to test

* checkpoint

* delete extra file

* httproute flattening code

* linting issue

* so close on this, calling for tonight

* unit test passing

* add in header manip to virtual host

* upstream rebuild commented out

* Use consistent upstream name whether or not we're rebuilding

* Start working through route naming logic

* Fix typos in test descriptions

* Simplify route naming logic

* Simplify RebuildHTTPRouteUpstream

* Merge additional compiled discovery chains instead of overwriting

* Use correct chain for flattened route, clean up + add TODOs

* Remove empty conditional branch

* Restore previous variable declaration

Limit the scope of this PR

* Clean up, improve TODO

* add logging, clean up todos

* clean up function

---------

Co-authored-by: Nathan Coleman <nathan.coleman@hashicorp.com>

* checkpoint, skeleton, tests not passing

* checkpoint

* endpoints xds cluster configuration

* resources test fix

* fix reversion in resources_test

* checkpoint

* Update agent/proxycfg/api_gateway.go

Co-authored-by: John Maguire <john.maguire@hashicorp.com>

* unit tests passing

* gofmt

* add deterministic sorting to appease the unit test gods

* remove panic

* Find ready upstream matching listener instead of first in list

* Clean up, improve TODO

* Modify getReadyUpstreams to filter upstreams by listener (#17410)

Each listener would previously have all upstreams from any route that bound to the listener. This is problematic when a route bound to one listener also binds to other listeners and so includes upstreams for multiple listeners. The list for a given listener would then wind up including upstreams for other listeners.

* clean up todos, references to api gateway in listeners_ingress

* merge in Nathan's fix

* Update agent/consul/discoverychain/gateway.go

* cleanup current todos, remove snapshot manipulation from generation code

* Update agent/structs/config_entry_gateways.go

Co-authored-by: Thomas Eckert <teckert@hashicorp.com>

* Update agent/consul/discoverychain/gateway.go

Co-authored-by: Nathan Coleman <nathan.coleman@hashicorp.com>

* Update agent/consul/discoverychain/gateway.go

Co-authored-by: Nathan Coleman <nathan.coleman@hashicorp.com>

* Update agent/proxycfg/snapshot.go

Co-authored-by: Nathan Coleman <nathan.coleman@hashicorp.com>

* clarified header comment for FlattenHTTPRoute, changed RebuildHTTPRouteUpstream to BuildHTTPRouteUpstream

* simplify cert logic

* Delete scratch

* revert route related changes in listener PR

* Update agent/consul/discoverychain/gateway.go

* Update agent/proxycfg/snapshot.go

* clean up uneeded extra lines in endpoints

---------

Co-authored-by: Nathan Coleman <nathan.coleman@hashicorp.com>
Co-authored-by: John Maguire <john.maguire@hashicorp.com>
Co-authored-by: Thomas Eckert <teckert@hashicorp.com>
2023-05-22 17:36:29 -04:00
sarahalsmiller d34bde0e4e
xds: generate clusters directly from API gateway snapshot (#17391)
* endpoints xds cluster configuration

* clusters xds native generation

* resources test fix

* fix reversion in resources_test

* Update agent/proxycfg/api_gateway.go

Co-authored-by: John Maguire <john.maguire@hashicorp.com>

* gofmt

* Modify getReadyUpstreams to filter upstreams by listener (#17410)

Each listener would previously have all upstreams from any route that bound to the listener. This is problematic when a route bound to one listener also binds to other listeners and so includes upstreams for multiple listeners. The list for a given listener would then wind up including upstreams for other listeners.

* Update agent/proxycfg/api_gateway.go

Co-authored-by: Nathan Coleman <nathan.coleman@hashicorp.com>

* Restore import blocking

* Undo removal of unrelated code

---------

Co-authored-by: John Maguire <john.maguire@hashicorp.com>
Co-authored-by: Nathan Coleman <nathan.coleman@hashicorp.com>
2023-05-22 12:00:13 -04:00
Ronald 113202d541
JWT Authentication with service intentions: xds package update (#17414)
* JWT Authentication with service intentions: update xds package to translate config to envoy
2023-05-19 18:14:16 -04:00
sarahalsmiller 134aac7c26
xds: generate endpoints directly from API gateway snapshot (#17390)
* endpoints xds cluster configuration

* resources test fix

* fix reversion in resources_test

* Update agent/proxycfg/api_gateway.go

Co-authored-by: John Maguire <john.maguire@hashicorp.com>

* gofmt

* Modify getReadyUpstreams to filter upstreams by listener (#17410)

Each listener would previously have all upstreams from any route that bound to the listener. This is problematic when a route bound to one listener also binds to other listeners and so includes upstreams for multiple listeners. The list for a given listener would then wind up including upstreams for other listeners.

* Update agent/proxycfg/api_gateway.go

Co-authored-by: Nathan Coleman <nathan.coleman@hashicorp.com>

* Restore import blocking

* Skip to next route if route has no upstreams

* cleanup

* change set from bool to empty struct

---------

Co-authored-by: John Maguire <john.maguire@hashicorp.com>
Co-authored-by: Nathan Coleman <nathan.coleman@hashicorp.com>
2023-05-19 18:50:59 +00:00
Kyle Havlovitz 2904d0a431
Pull virtual IPs for filter chains from discovery chains (#17375) 2023-05-17 11:18:39 -07:00
Connor 0789661ce5
Rename hcp-metrics-collector to consul-telemetry-collector (#17327)
* Rename hcp-metrics-collector to consul-telemetry-collector

* Fix docs

* Fix doc comment

---------

Co-authored-by: Ashvitha Sridharan <ashvitha.sridharan@hashicorp.com>
2023-05-16 14:36:05 -04:00
Chris Thain b9102c295d
Add Network Filter Support for Envoy Extensions (#17325) 2023-05-12 09:52:50 -07:00
Freddy 7c3e9cd862
Hash namespace+proxy ID when creating socket path (#17204)
UNIX domain socket paths are limited to 104-108 characters, depending on
the OS. This limit was quite easy to exceed when testing the feature on
Kubernetes, due to how proxy IDs encode the Pod ID eg:
metrics-collector-59467bcb9b-fkkzl-hcp-metrics-collector-sidecar-proxy

To ensure we stay under that character limit this commit makes a
couple changes:
- Use a b64 encoded SHA1 hash of the namespace + proxy ID to create a
  short and deterministic socket file name.
- Add validation to proxy registrations and proxy-defaults to enforce a
  limit on the socket directory length.
2023-05-09 12:20:26 -06:00
Eric Haberkorn 2c0da88ce7
fix panic in `injectSANMatcher` when `tlsContext` is `nil` (#17185) 2023-04-28 16:27:57 -04:00
Semir Patel 5eaeb7b8e5
Support Envoy's MaxEjectionPercent and BaseEjectionTime config entries for passive health checks (#15979)
* Add MaxEjectionPercent to config entry

* Add BaseEjectionTime to config entry

* Add MaxEjectionPercent and BaseEjectionTime to protobufs

* Add MaxEjectionPercent and BaseEjectionTime to api

* Fix integration test breakage

* Verify MaxEjectionPercent and BaseEjectionTime in integration test upstream confings

* Website docs for MaxEjectionPercent and BaseEjection time

* Add `make docs` to browse docs at http://localhost:3000

* Changelog entry

* so that is the difference between consul-docker and dev-docker

* blah

* update proto funcs

* update proto

---------

Co-authored-by: Maliz <maliheh.monshizadeh@hashicorp.com>
2023-04-26 15:59:48 -07:00
Eric Haberkorn b1fae05983
Add sameness groups to service intentions. (#17064) 2023-04-20 12:16:04 -04:00
hashicorp-copywrite[bot] 9f81fc01e9
[COMPLIANCE] Add Copyright and License Headers (#16854)
Co-authored-by: hashicorp-copywrite[bot] <110428419+hashicorp-copywrite[bot]@users.noreply.github.com>
Co-authored-by: Ronald <roncodingenthusiast@users.noreply.github.com>
2023-04-20 12:40:22 +00:00
Paul Glass 77ecff3209
Permissive mTLS (#17035)
This implements permissive mTLS , which allows toggling services into "permissive" mTLS mode.
Permissive mTLS mode allows incoming "non Consul-mTLS" traffic to be forward unmodified to the application.

* Update service-defaults and proxy-defaults config entries with a MutualTLSMode field
* Update the mesh config entry with an AllowEnablingPermissiveMutualTLS field and implement the necessary validation. AllowEnablingPermissiveMutualTLS must be true to allow changing to MutualTLSMode=permissive, but this does not require that all proxy-defaults and service-defaults are currently in strict mode.
* Update xDS listener config to add a "permissive filter chain" when MutualTLSMode=permissive for a particular service. The permissive filter chain matches incoming traffic by the destination port. If the destination port matches the service port from the catalog, then no mTLS is required and the traffic sent is forwarded unmodified to the application.
2023-04-19 14:45:00 -05:00
Chris Thain 175bb1a303
Wasm Envoy HTTP extension (#16877) 2023-04-06 14:12:07 -07:00
Eric Haberkorn 0d1d2fc4c9
add order by locality failover to Consul enterprise (#16791) 2023-03-30 10:08:38 -04:00
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
2023-03-28 14:39:22 -04:00
Derek Menteer 2236975011
Change partition for peers in discovery chain targets (#16769)
This commit swaps the partition field to the local partition for
discovery chains targeting peers. Prior to this change, peer upstreams
would always use a value of default regardless of which partition they
exist in. This caused several issues in xds / proxycfg because of id
mismatches.

Some prior fixes were made to deal with one-off id mismatches that this
PR also cleans up, since they are no longer needed.
2023-03-24 15:40:19 -05:00
Eric Haberkorn 495ad4c7ef
add enterprise xds tests (#16738) 2023-03-22 14:56:18 -04:00
Nitya Dhanushkodi b9bd2c3780
peering: peering partition failover fixes (#16673)
add local source partition for peered upstreams
2023-03-20 10:00:29 -07:00
Andrew Stucki 501b87fd31
[API Gateway] Fix invalid cluster causing gateway programming delay (#16661)
* Add test for http routes

* Add fix

* Fix tests

* Add changelog entry

* Refactor and fix flaky tests
2023-03-17 13:31:04 -04:00
Eric Haberkorn 57e034b746
fix confusing spiffe ids in golden tests (#16643) 2023-03-15 14:30:36 -04:00
Ashvitha f95ffe0355
Allow HCP metrics collection for Envoy proxies
Co-authored-by: Ashvitha Sridharan <ashvitha.sridharan@hashicorp.com>
Co-authored-by: Freddy <freddygv@users.noreply.github.com>

Add a new envoy flag: "envoy_hcp_metrics_bind_socket_dir", a directory
where a unix socket will be created with the name
`<namespace>_<proxy_id>.sock` to forward Envoy metrics.

If set, this will configure:
- In bootstrap configuration a local stats_sink and static cluster.
  These will forward metrics to a loopback listener sent over xDS.

- A dynamic listener listening at the socket path that the previously
  defined static cluster is sending metrics to.

- A dynamic cluster that will forward traffic received at this listener
  to the hcp-metrics-collector service.


Reasons for having a static cluster pointing at a dynamic listener:
- We want to secure the metrics stream using TLS, but the stats sink can
  only be defined in bootstrap config. With dynamic listeners/clusters
  we can use the proxy's leaf certificate issued by the Connect CA,
  which isn't available at bootstrap time.

- We want to intelligently route to the HCP collector. Configuring its
  addreess at bootstrap time limits our flexibility routing-wise. More
  on this below.

Reasons for defining the collector as an upstream in `proxycfg`:
- The HCP collector will be deployed as a mesh service.

- Certificate management is taken care of, as mentioned above.

- Service discovery and routing logic is automatically taken care of,
  meaning that no code changes are required in the xds package.

- Custom routing rules can be added for the collector using discovery
  chain config entries. Initially the collector is expected to be
  deployed to each admin partition, but in the future could be deployed
  centrally in the default partition. These config entries could even be
  managed by HCP itself.
2023-03-10 13:52:54 -07:00
Melisa Griffin fc232326a0
NET-2904 Fixes API Gateway Route Service Weight Division Error 2023-03-06 08:41:57 -05:00
Andrew Stucki 4b661d1e0c
Add ServiceResolver RequestTimeout for route timeouts to make TerminatingGateway upstream timeouts configurable (#16495)
* Leverage ServiceResolver ConnectTimeout for route timeouts to make TerminatingGateway upstream timeouts configurable

* Regenerate golden files

* Add RequestTimeout field

* Add changelog entry
2023-03-03 09:37:12 -05:00
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
2023-02-24 17:00:31 -05:00
Chris S. Kim a518893685
Fix various flaky tests (#16396) 2023-02-23 14:52:18 -05:00
Eric Haberkorn 595131fca9
Refactor the disco chain -> xds logic (#16392) 2023-02-23 11:32:32 -05:00
Matt Keeler 085c0addc0
Protobuf Refactoring for Multi-Module Cleanliness (#16302)
Protobuf Refactoring for Multi-Module Cleanliness

This commit includes the following:

Moves all packages that were within proto/ to proto/private
Rewrites imports to account for the packages being moved
Adds in buf.work.yaml to enable buf workspaces
Names the proto-public buf module so that we can override the Go package imports within proto/buf.yaml
Bumps the buf version dependency to 1.14.0 (I was trying out the version to see if it would get around an issue - it didn't but it also doesn't break things and it seemed best to keep up with the toolchain changes)

Why:

In the future we will need to consume other protobuf dependencies such as the Google HTTP annotations for openapi generation or grpc-gateway usage.
There were some recent changes to have our own ratelimiting annotations.
The two combined were not working when I was trying to use them together (attempting to rebase another branch)
Buf workspaces should be the solution to the problem
Buf workspaces means that each module will have generated Go code that embeds proto file names relative to the proto dir and not the top level repo root.
This resulted in proto file name conflicts in the Go global protobuf type registry.
The solution to that was to add in a private/ directory into the path within the proto/ directory.
That then required rewriting all the imports.

Is this safe?

AFAICT yes
The gRPC wire protocol doesn't seem to care about the proto file names (although the Go grpc code does tack on the proto file name as Metadata in the ServiceDesc)
Other than imports, there were no changes to any generated code as a result of this.
2023-02-17 16:14:46 -05:00
Andrew Stucki ee99d5c3a0
Fix panicky xDS test flakes (#16305)
* Add defensive guard to make some tests less flaky and panic less

* Do the actual fix
2023-02-17 14:07:49 -05:00
Andrew Stucki b3ddd4d24e
Inline API Gateway TLS cert code (#16295)
* Include secret type when building resources from config snapshot

* First pass at generating envoy secrets from api-gateway snapshot

* Update comments for xDS update order

* Add secret type + corresponding golden files to existing tests

* Initialize test helpers for testing api-gateway resource generation

* Generate golden files for new api-gateway xDS resource test

* Support ADS for TLS certificates on api-gateway

* Configure TLS on api-gateway listeners

* Inline TLS cert code

* update tests

* Add SNI support so we can have multiple certificates

* Remove commented out section from helper

* regen deep-copy

* Add tcp tls test

---------

Co-authored-by: Nathan Coleman <nathan.coleman@hashicorp.com>
2023-02-17 12:46:03 -05:00
Nitya Dhanushkodi 8dab825c36
troubleshoot: fixes and updated messages (#16294) 2023-02-17 07:43:05 -08:00
Thomas Eckert 2460ac99c9
API Gateway Envoy Golden Listener Tests (#16221)
* Simple API Gateway e2e test for tcp routes

* Drop DNSSans since we don't front the Gateway with a leaf cert

* WIP listener tests for api-gateway

* Return early if no routes

* Add back in leaf cert to testing

* Fix merge conflicts

* Re-add kind to setup

* Fix iteration over listener upstreams

* New tcp listener test

* Add tests for API Gateway with TCP and HTTP routes

* Move zero-route check back

* Drop generateIngressDNSSANs

* Check for chains not routes

---------

Co-authored-by: Andrew Stucki <andrew.stucki@hashicorp.com>
2023-02-16 14:42:36 -05:00
Derek Menteer 30112288c8
Fix mesh gateways incorrectly matching peer locality. (#16257)
Fix mesh gateways incorrectly matching peer locality.

This fixes an issue where local mesh gateways use an
incorrect address when attempting to forward traffic to a
peered datacenter. Prior to this change it would use the
lan address instead of the wan if the locality matched. This
should never be done for peering, since we must route all
traffic through the remote mesh gateway.
2023-02-16 09:22:41 -06:00