Kyle Havlovitz
1ffdf04bd7
Set MaxStale default to 10 years and add a stale counter ( #2481 )
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Default MaxStale to 10 years and add a counter at `consul.dns.stale_queries` that tracks when an agent serves a query that's stale by at least 5 seconds. Previously, MaxStale defaulted to 5 seconds and DNS would become unavailable after a short period of time with no leader. This new default allows DNS requests to still be served in the event of a long outage.
Fixes #2460 .
2016-11-08 14:45:12 -05:00
James Phillips
42de8f9800
Adds support for DNS recurse truncation. ( #2467 )
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* Return message from recurse even if truncated
Signed-off-by: Evan Farrar <efarrar@pivotal.io>
* Tweaks unit test.
2016-11-03 12:21:16 -07:00
Kyle Havlovitz
efb8f84922
Added tests for lookups on the 'addr.consul' domain
2016-10-27 21:04:06 -07:00
Kyle Havlovitz
b72bccc1c4
Give the service address in SRV lookup when it differs from the node's
2016-10-27 21:04:06 -07:00
Kyle Havlovitz
de308e75e1
Resolve Consul CNAME records on external services ( #2444 )
2016-10-26 19:23:51 -07:00
Pivotal DX129
2682410059
Merge remote-tracking branch 'upstream/master'
2016-09-01 10:15:32 -04:00
James Phillips
3304352272
Changes default DNS allow_stale to true.
2016-08-30 13:55:19 -07:00
Pierre Delagrave
3d5c2609e7
Renamed dns config parameter internal_client_timeout for recursor_timeout
2016-08-26 15:22:04 -04:00
Pierre Delagrave
17b6a18c37
Added a configurable timeout to the client making DNS queries to downstream name servers
2016-08-23 16:59:38 -04:00
James Phillips
c066c2e70a
Factors translate out into a separate file and makes safe for in-memory RPCs.
2016-08-15 15:05:02 -07:00
David van Geest
360e196c93
Translate Address to tagged WAN address in HTTP API when appropriate.
2016-08-12 18:25:36 -07:00
James Phillips
4915790bdc
Runs go fmt.
2016-08-12 17:26:23 -07:00
Max Timchenko
90f49354d6
Corrects two issues with DNS prepared query failover
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When DNS prepared query fails over to another datacenter and the datacenter
returns some nodes, the DNS result does not translate WAN addresses even when
translation is enabled for SRV and A queries, and returns the wrong datacenter
(the one that failed over) for SRV queries.
2016-08-12 17:06:43 -07:00
James Phillips
a666dc44b3
Passes the index by reference so we can control the allocation.
2016-08-12 14:51:50 -07:00
James Phillips
de95fe8638
Makes name compares case-insensitive.
2016-08-12 12:16:21 -07:00
James Phillips
45e2879eb5
Avoids allocations and function calls if no extra data is present.
2016-08-12 10:29:57 -07:00
James Phillips
e05c77b9bf
Renames "seen" to "resolved".
2016-08-11 22:01:57 -07:00
James Phillips
6c22c48326
Fixes the DNS SRV trim bug.
2016-08-11 21:46:14 -07:00
James Phillips
086a5af5ff
Finishes up DNS compression by adding opt-out, tests, and documentation. Fixes trim routine.
2016-08-11 16:27:08 -07:00
epipho
f31f1c04e9
Fix panic where r.Compress would be set before checking for errors.
2016-08-11 16:27:08 -07:00
epipho
6d17b4eb67
Compress all DNS responses to prevent them from going over the 512 byte
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limit from RFC 1035
2016-08-11 16:27:08 -07:00
Ryan Uber
ebacaa2d67
consul: send agent source data as separate query source
2016-06-30 16:51:18 -07:00
Ryan Uber
ec8ade1800
agent: always pass local agent query source, allow override
2016-06-30 12:11:48 -07:00
Ryan Uber
270270a33a
consul: send origin node + dc when executing prepared queries
2016-06-21 15:34:26 -07:00
Ryan Uber
89660879a0
agent: set origin during PQ execution
2016-06-20 14:24:42 -07:00
Sean Chittenden
c3dcd9acfb
Correctly detect that an answer has been truncated
2016-03-29 19:52:31 -07:00
Sean Chittenden
0ad4fab7d4
Remove dead and incorrect code
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This functionality is handled further upstream in `trimUDPAnswers()`
2016-03-29 19:38:26 -07:00
Sean Chittenden
d1166307aa
Trim UDP responses per configuration
2016-03-29 19:27:21 -07:00
Sean Chittenden
a29f6e8c8f
Allow adjusting the number of DNS records in a response...
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Based on work done by @fusiondog in #1583 , extend the concept to use an integer instead of a boolean.
Fixes : #1583 && #1481
2016-03-29 19:23:56 -07:00
Patrick Feliciano
e533f9bce1
Adding singleton option to DNS for getaddrinfo bug.
2016-03-29 19:23:07 -07:00
James Phillips
b132e8f21b
Tweaks algorithm so it's safe with an empty list and adds a PQ test.
2016-03-08 23:09:09 -08:00
Igor Dubinskiy
f4edb28ef3
Make sure UDP DNS responses aren't larger than allowed
2016-03-07 16:41:17 -08:00
James Phillips
a61a7403a7
Factors address translation into a single function.
2016-02-07 13:39:37 -08:00
James Phillips
79bd1fd4bb
Sets up config for more address tags down the road, renames struct members.
2016-02-07 10:37:34 -08:00
Evan Gilman
71cf39b5f8
Use a map for additional node addresses
2016-02-06 23:01:45 -08:00
Evan Gilman
d18dc81749
Consider WAN addresses during Node and SRV record lookup
2016-02-06 23:01:45 -08:00
Evan Gilman
0b741350b9
Implement translate_wan_addrs config option
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This knob tells consul whether it should prefer the WAN address (if set)
when making service lookups in remote datacenters. This enables
reachability for remote services which are behind a NAT.
2016-02-06 23:01:45 -08:00
James Phillips
874d491ade
Converts the DNS metric to a gauge which gives us a count and a time.
2015-12-21 18:25:09 -08:00
James Phillips
9e0ac674c3
Adds telemetry on number of DNS queries served, per-agent.
2015-12-21 17:01:28 -08:00
James Phillips
a364a02da6
Avoids taking the length again when parsing DNS queries.
2015-11-17 08:40:47 -08:00
James Phillips
267c352c6d
Adds a test to make sure a stale retry terminates.
2015-11-15 17:06:00 -08:00
James Phillips
c9ef552385
Plumbs the service name back and uses agent-specific TTL settings as a fallback.
2015-11-15 17:06:00 -08:00
James Phillips
cad6938474
Adds unit tests for prepared queries and DNS, using existing tests for equivalence.
2015-11-15 17:06:00 -08:00
James Phillips
f9c91479ef
Adds DNS support for prepared queries (needs tests).
2015-11-15 17:06:00 -08:00
James Phillips
a33e35fcce
Moves DNS over to new shuffle and filter functions.
2015-11-15 17:06:00 -08:00
James Phillips
cbcd977a39
Gets new structs changes to compile, adds some corner case handling and extra unit tests.
2015-10-15 14:59:09 -07:00
Dale Wijnand
c5168e1263
Fix a bunch of typos.
2015-09-15 13:22:08 +01:00
Wim
3d7c3725d8
Allow AAAA queries for nodeLookup
2015-09-08 16:54:36 +02:00
Wim
2336c6a4bd
No NXDOMAIN when the answer is empty
2015-09-02 16:12:22 +02:00
Wim
e97973c1e1
Limit the DNS responses after getting the NodeRecords
2015-09-01 23:23:05 +02:00
