Commit Graph

81 Commits

Author SHA1 Message Date
Akshay Ganeshen 93b8a4e8d8 dns: support alt domains for dns resolution (#5940)
this adds an option for an alt domain to be used with dns while migrating to a new consul domain.
2019-06-27 12:00:37 +02:00
Alvin Huang 96c2c79908
Add fmt and vet (#5671)
* add go fmt and vet

* go fmt fixes
2019-04-25 12:26:33 -04:00
Aestek 6762eeb03c Add support for DNS config hot-reload (#4875)
The DNS config parameters `recursors` and `dns_config.*` are now hot
reloaded on SIGHUP or `consul reload` and do not need an agent restart
to be modified.
Config is stored in an atomic.Value and loaded at the beginning of each
request. Reloading only affects requests that start _after_ the
reload. Ongoing requests are not affected. To match the current
behavior the recursor handler is loaded and unloaded as needed on config
reload.
2019-04-24 14:11:54 -04:00
Alvin Huang aacb81a566
Merge pull request #5376 from hashicorp/fix-tests
Fix tests in prep for CircleCI Migration
2019-04-04 17:09:32 -04:00
Jeff Mitchell d3c7d57209
Move internal/ to sdk/ (#5568)
* Move internal/ to sdk/

* Add a readme to the SDK folder
2019-03-27 08:54:56 -04:00
Jeff Mitchell a41c865059
Convert to Go Modules (#5517)
* First conversion

* Use serf 0.8.2 tag and associated updated deps

* * Move freeport and testutil into internal/

* Make internal/ its own module

* Update imports

* Add replace statements so API and normal Consul code are
self-referencing for ease of development

* Adapt to newer goe/values

* Bump to new cleanhttp

* Fix ban nonprintable chars test

* Update lock bad args test

The error message when the duration cannot be parsed changed in Go 1.12
(ae0c435877d3aacb9af5e706c40f9dddde5d3e67). This updates that test.

* Update another test as well

* Bump travis

* Bump circleci

* Bump go-discover and godo to get rid of launchpad dep

* Bump dockerfile go version

* fix tar command

* Bump go-cleanhttp
2019-03-26 17:04:58 -04:00
Alvin Huang 47e1c37fe6 add serf check to testDNSServiceLookupResponseLimits, checkDNSService 2019-02-22 17:34:45 -05:00
Matt Keeler a34f8c751e
Pass a testing.T into NewTestAgent and TestAgent.Start (#5342)
This way we can avoid unnecessary panics which cause other tests not to run.

This doesn't remove all the possibilities for panics causing other tests not to run, it just fixes the TestAgent
2019-02-14 10:59:14 -05:00
Matt Keeler e5cadc561a
Don't generate TXT records just to discard them (#5272)
* Don't generate TXT records just to discard them

* Add unit test for formatNodeRecord to ensure it prevents returning TXT records
2019-01-28 14:59:58 -05:00
Pierre Souchay 5b8a7d7127 Avoid to have infinite recursion in DNS lookups when resolving CNAMEs (#4918)
* Avoid to have infinite recursion in DNS lookups when resolving CNAMEs

This will avoid killing Consul when a Service.Address is using CNAME
to a Consul CNAME that creates an infinite recursion.

This will fix https://github.com/hashicorp/consul/issues/4907

* Use maxRecursionLevel = 3 to allow several recursions
2019-01-07 16:53:54 -05:00
Paul Banks 0962e95e85
bugfix: use ServiceTags to generate cache key hash (#4987)
* bugfix: use ServiceTags to generate cahce key hash

* update unit test

* update

* remote print log

* Update .gitignore

* Completely deprecate ServiceTag field internally for clarity

* Add explicit test for CacheInfo cases
2019-01-07 21:30:47 +00:00
Pierre Souchay d0ca1bade9 Fixed another list of unstable unit tests in travis (#4915)
* Fixed another list of unstable unit tests in travis

Fixed failing tests in https://travis-ci.org/hashicorp/consul/jobs/451357061

* Fixed another list of unstable unit tests in travis.

Fixed failing tests in https://travis-ci.org/hashicorp/consul/jobs/451357061
2018-11-20 11:27:26 +00:00
Pierre Souchay a72f92cac6 dns: implements prefix lookups for DNS TTL (#4605)
This will fix https://github.com/hashicorp/consul/issues/4509 and allow forinstance lb-* to match services lb-001 or lb-service-007.
2018-10-19 08:41:04 -07:00
Pierre Souchay 42f250fa53 Added SOA configuration for DNS settings. (#4714)
This will allow to fine TUNE SOA settings sent by Consul in DNS responses,
for instance to be able to control negative ttl.

Will fix: https://github.com/hashicorp/consul/issues/4713

# Example

Override all settings:

* min_ttl: 0 => 60s
* retry: 600 (10m) => 300s (5 minutes),
* expire: 86400 (24h) => 43200 (12h)
* refresh: 3600 (1h) => 1800 (30 minutes)

```
consul agent -dev -hcl 'dns_config={soa={min_ttl=60,retry=300,expire=43200,refresh=1800}}'
```

Result:
```
dig +multiline @localhost -p 8600 service.consul

; <<>> DiG 9.12.1 <<>> +multiline @localhost -p 8600 service.consul
; (2 servers found)
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 36557
;; flags: qr aa rd; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 1
;; WARNING: recursion requested but not available

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 4096
;; QUESTION SECTION:
;service.consul.		IN A

;; AUTHORITY SECTION:
consul.			0 IN SOA ns.consul. hostmaster.consul. (
				1537959133 ; serial
				1800       ; refresh (30 minutes)
				300        ; retry (5 minutes)
				43200      ; expire (12 hours)
				60         ; minimum (1 minute)
				)

;; Query time: 4 msec
;; SERVER: 127.0.0.1#8600(127.0.0.1)
;; WHEN: Wed Sep 26 12:52:13 CEST 2018
;; MSG SIZE  rcvd: 93
```
2018-10-10 15:50:56 -04:00
Paul Banks 92fe8c8e89 Add Proxy Upstreams to Service Definition (#4639)
* Refactor Service Definition ProxyDestination.

This includes:
 - Refactoring all internal structs used
 - Updated tests for both deprecated and new input for:
   - Agent Services endpoint response
   - Agent Service endpoint response
   - Agent Register endpoint
     - Unmanaged deprecated field
     - Unmanaged new fields
     - Managed deprecated upstreams
     - Managed new
   - Catalog Register
     - Unmanaged deprecated field
     - Unmanaged new fields
     - Managed deprecated upstreams
     - Managed new
   - Catalog Services endpoint response
   - Catalog Node endpoint response
   - Catalog Service endpoint response
 - Updated API tests for all of the above too (both deprecated and new forms of register)

TODO:
 - config package changes for on-disk service definitions
 - proxy config endpoint
 - built-in proxy support for new fields

* Agent proxy config endpoint updated with upstreams

* Config file changes for upstreams.

* Add upstream opaque config and update all tests to ensure it works everywhere.

* Built in proxy working with new Upstreams config

* Command fixes and deprecations

* Fix key translation, upstream type defaults and a spate of other subtele bugs found with ned to end test scripts...

TODO: tests still failing on one case that needs a fix. I think it's key translation for upstreams nested in Managed proxy struct.

* Fix translated keys in API registration.
≈

* Fixes from docs
 - omit some empty undocumented fields in API
 - Bring back ServiceProxyDestination in Catalog responses to not break backwards compat - this was removed assuming it was only used internally.

* Documentation updates for Upstreams in service definition

* Fixes for tests broken by many refactors.

* Enable travis on f-connect branch in this branch too.

* Add consistent Deprecation comments to ProxyDestination uses

* Update version number on deprecation notices, and correct upstream datacenter field with explanation in docs
2018-10-10 16:55:34 +01:00
Matt Keeler 19d71c6eb4
Add ECS option to EDNS responses where appropriate (#4647)
This implements parts of RFC 7871 where Consul is acting as an authoritative name server (or forwarding resolver when recursors are configured)

If ECS opt is present in the request we will mirror it back and return a response with a scope of 0 (global) or with the same prefix length as the request (indicating its valid specifically for that subnet).

We only mirror the prefix-length (non-global) for prepared queries as those could potentially use nearness checks that could be affected by the subnet. In the future we could get more sophisticated with determining the scope bits and allow for better caching of prepared queries that don’t rely on nearness checks.

The other thing this does not do is implement the part of the ECS RFC related to originating ECS headers when acting as a intermediate DNS server (forwarding resolver). That would take a quite a bit more effort and in general provide very little value. Consul will currently forward the ECS headers between recursors and the clients transparently, we just don't originate them for non-ECS clients to get potentially more accurate "location aware" results.
2018-09-11 09:37:46 -04:00
Pierre Souchay 7a42c31330 Fix unstable tests in agent, api, and command/watch 2018-09-10 16:58:53 +01:00
Pierre Souchay fd927ea110 BUGFIX: Unit test relying on WaitForLeader() did not work due to wrong test (#4472)
- Improve resilience of testrpc.WaitForLeader()

- Add additionall retry to CI

- Increase "go test" timeout to 8m

- Add wait for cluster leader to several tests in the agent package

- Add retry to some tests in the api and command packages
2018-08-06 19:46:09 -04:00
Siva Prasad dcd7d9b015
DNS : Fixes recursors answering the DNS query to properly return the correct response. (#4461)
* Fixes the DNS recursor properly resolving the requests

* Added a test case for the recursor bug

* Refactored code && added a test case for all failing recursors

* Inner indentation moved into else if check
2018-08-02 10:12:52 -04:00
Matt Keeler 86ce52d0d3 Merge remote-tracking branch 'origin/master' into bugfix/prevent-multi-cname 2018-07-10 10:26:45 -04:00
Matt Keeler a26deb44cf Ensure TXT RRs always end up in the Additional section except for ANY or TXT queries
This also changes where the enforcement of the enable_additional_node_meta_txt configuration gets applied.

formatNodeRecord returns the main RRs and the meta/TXT RRs in separate slices. Its then up to the caller to add to the appropriate sections or not.
2018-07-09 12:30:11 -04:00
Matt Keeler 22cc44877d Fix some edge cases and add some tests. 2018-07-02 16:58:52 -04:00
mkeeler 1da3c42867 Merge remote-tracking branch 'connect/f-connect' 2018-06-25 19:42:51 +00:00
Matt Keeler b9d1e7042a Make filtering out TXT RRs only apply when they would end up in Additional section
ANY queries are no longer affected.
2018-06-19 10:08:16 -04:00
Mitchell Hashimoto 7e8d606717
agent: address PR feedback 2018-06-14 09:41:49 -07:00
Mitchell Hashimoto f9a55aa7e0
agent: clarified a number of comments per PR feedback 2018-06-14 09:41:49 -07:00
Mitchell Hashimoto 119ffe3ed9
agent/consul: implement Health.ServiceNodes for Connect, DNS works 2018-06-14 09:41:47 -07:00
Mitchell Hashimoto a5fe6204d5
agent: working DNS for Connect queries, I think, but have to
implement Health endpoints to be sure
2018-06-14 09:41:47 -07:00
Matt Keeler 6604828009 Add configuration entry to control including TXT records for node meta in DNS responses
If set to false, the only way to retrieve TXT records for node meta is to specifically query for TXT records.
2018-06-11 11:49:04 -04:00
Matt Keeler 1c577b2012
Merge pull request #4131 from pierresouchay/enable_full_dns_compression
Enable full dns compression
2018-06-01 10:42:03 -04:00
Wim cbd4405c50 Add service reverse lookup tests 2018-05-21 22:59:21 +02:00
Pierre Souchay 5c1c9cde34 Test fix, trying to pass Travis tests 2018-05-16 14:10:35 +02:00
Pierre Souchay 5f529c9ea7 Fixed unit tests and updated limits 2018-05-16 12:11:49 +02:00
Pierre Souchay cf3cd546c8 More Tests cases compression/no compression 2018-04-21 17:18:39 +02:00
Pierre Souchay e1240556f9 Improved unit tests debug info when it fails 2018-04-18 14:18:17 +02:00
Pierre Souchay 6706ff9f0b Run new test in parallel 2018-04-17 10:36:12 +02:00
Pierre Souchay 49aaf4155b More test cases + travis flacky 2018-04-17 09:42:08 +02:00
Pierre Souchay f2fc163b92 Added Unit tests + fixed boudary limit 2018-04-17 09:31:30 +02:00
Kyle Havlovitz be10300d06
Update make static-assets goal and run format 2018-04-13 09:57:25 -07:00
Matt Keeler d604642792 GH-3798: More PR Updates
Update docs a little
Update/add tests. Make sure all the various ways of determining the source IP work
Update X-Forwarded-For header parsing. This can be a comma separated list with the first element being the original IP so we now handle csv data there.
Got rid of error return from sourceAddrFromRequest
2018-04-12 10:40:46 -04:00
Matt Keeler aa9151738a GH-3798: A couple more PR updates
Test HTTP/DNS source IP without header/extra EDNS data.
Add WARN log for when prepared query with near=_ip is executed without specifying the source ip
2018-04-12 10:10:37 -04:00
Matt Keeler 3a0f7789ec GH-3798: A few more PR updates 2018-04-11 20:32:35 -04:00
Matt Keeler de3a9be3d0 GH-3798: Updates for PR
Allow DNS peer IP as the source IP.
Break early when the right node was found for executing the preapred query.
Update docs
2018-04-11 17:02:04 -04:00
Matt Keeler 300f7f388e GH-3798: Wrap DNS request validation in a retry 2018-04-11 16:00:15 -04:00
Matt Keeler b7869e9771 GH-3798: Add DNS near=_ip test 2018-04-11 10:33:48 -04:00
Matt Keeler c0b1fb6ede
Merge pull request #3948 from pierresouchay/fix_tcp_dns_limit
[BUGFIX] do not break when TCP DNS answer exceeds 64k
2018-03-30 16:25:23 -04:00
Matt Keeler fd9297ad8f Formatting update 2018-03-27 16:31:27 -04:00
Josh Soref 1dd8c378b9 Spelling (#3958)
* spelling: another

* spelling: autopilot

* spelling: beginning

* spelling: circonus

* spelling: default

* spelling: definition

* spelling: distance

* spelling: encountered

* spelling: enterprise

* spelling: expands

* spelling: exits

* spelling: formatting

* spelling: health

* spelling: hierarchy

* spelling: imposed

* spelling: independence

* spelling: inspect

* spelling: last

* spelling: latest

* spelling: client

* spelling: message

* spelling: minimum

* spelling: notify

* spelling: nonexistent

* spelling: operator

* spelling: payload

* spelling: preceded

* spelling: prepared

* spelling: programmatically

* spelling: required

* spelling: reconcile

* spelling: responses

* spelling: request

* spelling: response

* spelling: results

* spelling: retrieve

* spelling: service

* spelling: significantly

* spelling: specifies

* spelling: supported

* spelling: synchronization

* spelling: synchronous

* spelling: themselves

* spelling: unexpected

* spelling: validations

* spelling: value
2018-03-19 16:56:00 +00:00
Pierre Souchay d9b59d1b3e Fixed minor typo (+ travis tests is unstable) 2018-03-09 18:42:13 +01:00
Pierre Souchay 871b9907cb Optimize size for SRV records, should improve performance a bit
Stricter Unit tests that checks if truncation was OK.
2018-03-09 18:25:29 +01:00