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702 Commits

Author SHA1 Message Date
Michael Puncel a98d25b541 Add http method to log output 2015-10-02 18:33:06 -07:00
James Phillips 0b05dbeb21 Merge pull request #1235 from wuub/master 
fix conflict between handleReload and antiEntropy critical sections
 2015-09-17 07:28:39 -07:00
Wojciech Bederski c4537ed26f panic when unbalanced localState.Resume() is detected 2015-09-17 11:32:08 +02:00
Dale Wijnand 5a28ebcaa3 Fix a bunch of typos. 2015-09-15 13:22:08 +01:00
James Phillips 2f9ebdb135 Merge pull request #1187 from sfncook/enable_tag_drift_03 
Enable tag drift 03
 2015-09-11 15:35:32 -07:00
Anthony Scalisi 10e028d599 remove various typos 2015-09-11 12:29:54 -07:00
Wojciech Bederski b014c0f91b make Pause()/Resume()/isPaused() behave more like a semaphore 
see: https://github.com/hashicorp/consul/issues/1173 #1173

Reasoning: somewhere during consul development Pause()/Resume() and
PauseSync()/ResumeSync() were added to protect larger changes to
agent's localState.  A few of the places that it tries to protect are:

- (a *Agent) AddService(...)      # part of the method
- (c *Command) handleReload(...)  # almost the whole method
- (l *localState) antiEntropy(...)# isPaused() prevents syncChanges()

The main problem is, that in the middle of handleReload(...)'s
critical section it indirectly (loadServices()) calls  AddService(...).
AddService() in turn calls Pause() to protect itself against
syncChanges(). At the end of AddService() a defered call to Resume() is
made.

With the current implementation, this releases
isPaused() "lock" in the middle of handleReload() allowing antiEntropy
to kick in while configuration reload is still in progress.
Specifically almost all services and probably all check are unloaded
when syncChanges() is allowed to run.

This in turn can causes massive service/check de-/re-registration,
and since checks are by default registered in the critical state,
a majority of services on a node can be marked as failing.
It's made worse with automation, often calling `consul reload` in close
proximity on many nodes in the cluster.

This change basically turns Pause()/Resume() into P()/V() of
a garden-variety semaphore. Allowing Pause() to be called multiple times,
and releasing isPaused() only after all matching/defered Resumes() are
called as well.

TODO/NOTE: as with many semaphore implementations, it might be reasonable
to panic() if l.paused ever becomes negative.
 2015-09-11 18:28:06 +02:00
Wojciech Bederski 24bc17eaa1 failing test showing that nested Pause()/Resume() release too early 
see: #1173 / https://github.com/hashicorp/consul/issues/1173
 2015-09-11 17:52:57 +02:00
Shawn Cook 66fd8fb2a0 Rename EnableTagOverride and update formatting 2015-09-11 08:35:29 -07:00
Shawn Cook d7ce0b3c6b Remove debug lines 2015-09-11 08:32:59 -07:00
Shawn Cook 0b3faf6e4a Merge remote-tracking branch 'hashicorp/master' into enable_tag_drift_03 2015-09-10 14:55:30 -07:00
Shawn Cook 35f276f25d Add test cases TestAgentAntiEntropy_EnableTagDrift 2015-09-10 14:08:16 -07:00
Ryan Uber 1908c16f53 Merge pull request #1230 from hashicorp/f-maintfix 
Respect tokens in maintenance mode
 2015-09-10 12:30:07 -07:00
Ryan Uber 039938a7e0 agent: testing node/service maintenance using tokens 2015-09-10 12:08:08 -07:00
Ryan Uber 125d7fd4ee agent: thread tokens through for maintenance mode 2015-09-10 11:43:59 -07:00
Wim 0bc4d9322e Allow AAAA queries for nodeLookup 2015-09-08 16:54:36 +02:00
Wim 2701bb5cc2 No NXDOMAIN when the answer is empty 2015-09-02 16:12:22 +02:00
Ryan Breen 80d26f9156 Merge pull request #1167 from railsguru/master 
Add -http-port option to change the HTTP API port
 2015-09-02 01:15:55 -04:00
Armon Dadgar 52a8a95af9 agent: Always enable the UI endpoints 2015-09-01 18:28:32 -07:00
Wim 4a1dc90cba Limit the DNS responses after getting the NodeRecords 2015-09-01 23:23:05 +02:00
Ryan Breen f41b79eff2 Merge pull request #1195 from 42wim/fix-rfc2308-part2 
Return SOA/NXDOMAIN when the answer is empty
 2015-09-01 17:08:31 -04:00
Wim 369982270d Return SOA/not found when the answer is empty 2015-09-01 22:28:12 +02:00
Ryan Uber 11e4cfd72b agent: reload SCADA client if endpoint changes 2015-08-27 13:29:07 -07:00
Ryan Uber c468acf222 command: atlas endpoint can be passed 2015-08-27 11:11:05 -07:00
Ryan Uber 1cc2429364 agent: atlas_endpoint is configurable 2015-08-27 11:08:01 -07:00
Ryan Uber 5ad8bfbd41 agent: log a message when making a new scada connection 2015-08-25 21:03:16 -07:00
Ryan Uber 4b715a7d2c agent: don't reload scada client if there is no config change 2015-08-25 20:43:57 -07:00
Ryan Uber ed70720d55 agent: testing scada client creation in command 2015-08-25 20:22:22 -07:00
Ryan Uber 52a7206ff3 agent: test scada HTTP server creation 2015-08-25 18:51:04 -07:00
Ryan Uber eb8974160f agent: clean up scada connection manager 2015-08-25 18:27:07 -07:00
Ryan Uber 87c1e4fcd3 agent: document the scada http creation func 2015-08-25 17:19:11 -07:00
Ryan Uber 2e6ccded2c agent: scada client and HTTP server are tracked separately 2015-08-25 16:59:53 -07:00
Andy Lo-A-Foe 85321301e1 Remove duplicate code 2015-08-20 20:46:20 +02:00
Andy Lo-A-Foe 3e046d3efc Use Ports.HTTP directly 2015-08-20 20:27:20 +02:00
Andy Lo-A-Foe 4e2c3373bc Add documentation for http-port option 2015-08-20 20:19:35 +02:00
Shawn Cook 96785edd9a Add EnableTagDrift logic to command/agent/local.go 2015-08-18 14:03:48 -07:00
Shawn Cook a0f8c0a2a0 Remove from command/agent/config_test.go 2015-08-18 10:42:25 -07:00
Shawn Cook 6a835939b8 EnableTagDrift in NodeService struct 2015-08-18 10:34:55 -07:00
Ryan Uber 05216d3cc4 agent: log network address of DNS clients 2015-08-11 10:33:27 -07:00
Andy Lo-A-Foe 7b5da2a240 Add -http-port option to change the HTTP API port 
This is useful when pushing consul to PaaS like
Cloud Foundry making the HTTP API easily routable.
 2015-08-11 14:14:21 +02:00
Ryan Breen 018fd69aa2 Merge pull request #1143 from hashicorp/GH-1142 
Check NXDOMAIN after filtering nodes
 2015-07-29 18:56:08 -04:00
Ryan Breen 0a7dc85076 Test for GH-1142. 2015-07-29 18:21:16 -04:00
Armon Dadgar 0363d4b54b Merge pull request #1137 from 42wim/fix-1124 
Recurse when PTR answer is empty
 2015-07-29 14:39:04 -07:00
Ryan Breen 42648438a0 Check NXDOMAIN after filtering nodes 
Move the check for NXDOMAIN below the service health filter.
 2015-07-29 17:16:48 -04:00
Ryan Uber 93c9c87f7a Merge pull request #1141 from hashicorp/f-travis 
Try moving to newer Travis-CI infrastructure
 2015-07-28 10:42:56 -07:00
Ryan Uber 40f3e3fae7 travis-ci: skip syslog tests for container-based travis infra 2015-07-28 09:58:43 -07:00
Wim 5647a37ffe Recurse when PTR answer is empty 2015-07-27 23:22:36 +02:00
Armon Dadgar 4a9b91f2a2 Merge pull request #1130 from pdf/check_socket 
Add Socket check type
 2015-07-27 14:21:24 -07:00
Ryan Uber a6317f2fb2 Merge pull request #1090 from hashicorp/f-keyring-acl 
Keyring ACLs
 2015-07-24 10:23:18 -07:00
Peter Fern b023904298 Add TCP check type 
Adds the ability to simply check whether a TCP socket accepts
connections to determine if it is healthy.  This is a light-weight -
though less comprehensive than scripting - method of checking network
service health.

The check parameter `tcp` should be set to the `address:port`
combination for the service to be tested.  Supports both IPv6 and IPv4,
in the case of a hostname that resolves to both, connections will be
attempted via both protocol versions, with the first successful
connection returning a successful check result.

Example check:

```json
{
  "check": {
    "id": "ssh",
    "name": "SSH (TCP)",
    "tcp": "example.com:22",
    "interval": "10s"
  }
}
```
 2015-07-24 14:06:05 +10:00