Commit Graph

310 Commits

Author SHA1 Message Date
Aestek eba1dd7856 Prevent status flap when re-registering a check (#4904)
Fixes point `#2` of: https://github.com/hashicorp/consul/issues/4903

When registering a service each healthcheck status is saved and restored (https://github.com/hashicorp/consul/blob/master/agent/agent.go#L1914) to avoid unnecessary flaps in health state.
This change extends this feature to single check registration by moving this protection in `AddCheck()` so that both `PUT /v1/agent/service/register` and `PUT /v1/agent/check/register` behave in the same idempotent way.

#### Steps to reproduce
1. Register a check :
```
curl -X PUT \
  http://127.0.0.1:8500/v1/agent/check/register \
  -H 'Content-Type: application/json' \
  -d '{
  "Name": "my_check",
  "ServiceID": "srv",
  "Interval": "10s",
  "Args": ["true"]
}'
```
2. The check will initialize and change to `passing`
3. Run the same request again
4. The check status will quickly go from `critical` to `passing` (the delay for this transission is determined by https://github.com/hashicorp/consul/blob/master/agent/checks/check.go#L95)
2019-01-07 13:53:03 -05:00
Matt Keeler 99e0a124cb
New ACLs (#4791)
This PR is almost a complete rewrite of the ACL system within Consul. It brings the features more in line with other HashiCorp products. Obviously there is quite a bit left to do here but most of it is related docs, testing and finishing the last few commands in the CLI. I will update the PR description and check off the todos as I finish them over the next few days/week.
Description

At a high level this PR is mainly to split ACL tokens from Policies and to split the concepts of Authorization from Identities. A lot of this PR is mostly just to support CRUD operations on ACLTokens and ACLPolicies. These in and of themselves are not particularly interesting. The bigger conceptual changes are in how tokens get resolved, how backwards compatibility is handled and the separation of policy from identity which could lead the way to allowing for alternative identity providers.

On the surface and with a new cluster the ACL system will look very similar to that of Nomads. Both have tokens and policies. Both have local tokens. The ACL management APIs for both are very similar. I even ripped off Nomad's ACL bootstrap resetting procedure. There are a few key differences though.

    Nomad requires token and policy replication where Consul only requires policy replication with token replication being opt-in. In Consul local tokens only work with token replication being enabled though.
    All policies in Nomad are globally applicable. In Consul all policies are stored and replicated globally but can be scoped to a subset of the datacenters. This allows for more granular access management.
    Unlike Nomad, Consul has legacy baggage in the form of the original ACL system. The ramifications of this are:
        A server running the new system must still support other clients using the legacy system.
        A client running the new system must be able to use the legacy RPCs when the servers in its datacenter are running the legacy system.
        The primary ACL DC's servers running in legacy mode needs to be a gate that keeps everything else in the entire multi-DC cluster running in legacy mode.

So not only does this PR implement the new ACL system but has a legacy mode built in for when the cluster isn't ready for new ACLs. Also detecting that new ACLs can be used is automatic and requires no configuration on the part of administrators. This process is detailed more in the "Transitioning from Legacy to New ACL Mode" section below.
2018-10-19 12:04:07 -04:00
Kyle Havlovitz 96a35f8abc re-add Connect multi-dc config changes
This reverts commit 8bcfbaffb6588b024cd1a3cf0952e6bfa7d9e900.
2018-10-19 08:41:03 -07:00
Jack Pearkes 847a0a5266 Revert "Connect multi-dc config" (#4784) 2018-10-11 17:32:45 +01:00
Aestek 260a9880ae [Security] Add finer control over script checks (#4715)
* Add -enable-local-script-checks options

These options allow for a finer control over when script checks are enabled by
giving the option to only allow them when they are declared from the local
file system.

* Add documentation for the new option

* Nitpick doc wording
2018-10-11 13:22:11 +01:00
Paul Banks 94332edf2e
[WIP] Initial draft of Sidecar Service and Managed Proxy deprecation docs (#4752)
* Initial draft of Sidecar Service and Managed Proxy deprecation docs

* Service definition deprecation notices and sidecar service

* gRPC and sidecar service config options; Deprecate managed proxy options

* Envoy Docs: Basic envoy command; envoy getting started/intro

* Remove change that snuck in

* Envoy custom config example

* Add agent/service API docs; deprecate proxy config endpoint

* Misc grep cleanup for managed proxies; capitalize Envoy

* Updates to getting started guide

* Add missing link

* Refactor Envoy guide into a separate guide and add bootstrap reference notes.

* Add limitations to Envoy docs; Highlight no fixes for known managed proxy issues on deprecation page; clarify snake cae stuff; Sidecar Service lifecycle
2018-10-11 10:44:42 +01:00
Kyle Havlovitz 5b98a602af agent: add primary_datacenter and connect replication config options 2018-10-10 12:17:59 -07:00
Kyle Havlovitz 475afd0300 docs: deprecate acl_datacenter and replace it with primary_datacenter 2018-10-10 12:16:47 -07:00
Paul Banks 7a8023a57f Fix up tests broken by master merge; add proxy tests to services command (and fix it!); actually run the proxycfg.Manager 2018-10-10 16:55:34 +01:00
Paul Banks 1e4c5a1811 Connect Envoy Command (#4735)
* Plumb xDS server and proxyxfg into the agent startup

* Add `consul connect envoy` command to allow running Envoy as a connect sidecar.

* Add test for help tabs; typos and style fixups from review
2018-10-10 16:55:34 +01:00
Paul Banks 979e1c9c94 Add -sidecar-for and new /agent/service/:service_id endpoint (#4691)
- A new endpoint `/v1/agent/service/:service_id` which is a generic way to look up the service for a single instance. The primary value here is that it:
   - **supports hash-based blocking** and so;
   - **replaces `/agent/connect/proxy/:proxy_id`** as the mechanism the built-in proxy uses to read its config.
   - It's not proxy specific and so works for any service.
   - It has a temporary shim to call through to the existing endpoint to preserve current managed proxy config defaulting behaviour until that is removed entirely (tested).
 - The built-in proxy now uses the new endpoint exclusively for it's config
 - The built-in proxy now has a `-sidecar-for` flag that allows the service ID of the _target_ service to be specified, on the condition that there is exactly one "sidecar" proxy (that is one that has `Proxy.DestinationServiceID` set) for the service registered.
 - Several fixes for edge cases for SidecarService
 - A fix for `Alias` checks - when running locally they didn't update their state until some external thing updated the target. If the target service has no checks registered as below, then the alias never made it past critical.
2018-10-10 16:55:34 +01:00
Paul Banks 7038fe6b71 Add SidecarService Syntax sugar to Service Definition (#4686)
* Added new Config for SidecarService in ServiceDefinitions.

* WIP: all the code needed for SidecarService is written... none of it is tested other than config :). Need API updates too.

* Test coverage for the new sidecarServiceFromNodeService method.

* Test API registratrion with SidecarService

* Recursive Key Translation 🤦

* Add tests for nested sidecar defintion arrays to ensure they are translated correctly

* Use dedicated internal state rather than Service Meta for tracking sidecars for deregistration.

Add tests for deregistration.

* API struct for agent register. No other endpoint should be affected yet.

* Additional test cases to cover updates to API registrations
2018-10-10 16:55:34 +01:00
Paul Banks bed72f6078 Rename proxy package (re-run of #4550) (#4638)
* Rename agent/proxy package to reflect that it is limited to managed proxy processes

Rationale: we have several other components of the agent that relate to Connect proxies for example the ProxyConfigManager component needed for Envoy work. Those things are pretty separate from the focus of this package so far which is only concerned with managing external proxy processes so it's nota good fit to put code for that in here, yet there is a naming clash if we have other packages related to proxy functionality that are not in the `agent/proxy` package.

Happy to bikeshed the name. I started by calling it `managedproxy` but `managedproxy.Manager` is especially unpleasant. `proxyprocess` seems good in that it's more specific about purpose but less clearly connected with the concept of "managed proxies". The names in use are cleaner though e.g. `proxyprocess.Manager`.

This rename was completed automatically using golang.org/x/tools/cmd/gomvpkg.

Depends on #4541

* Fix missed windows tagged files
2018-10-10 16:55:34 +01:00
Paul Banks 5b0d4db6bc Support Agent Caching for Service Discovery Results (#4541)
* Add cache types for catalog/services and health/services and basic test that caching works

* Support non-blocking cache types with Cache-Control semantics.

* Update API docs to include caching info for every endpoint.

* Comment updates per PR feedback.

* Add note on caching to the 10,000 foot view on the architecture page to make the new data path more clear.

* Document prepared query staleness quirk and force all background requests to AllowStale so we can spread service discovery load across servers.
2018-10-10 16:55:34 +01:00
Paul Banks 77e0577ff6
Add a Close method to cache that stops background goroutines. (#4746)
In a real agent the `cache` instance is alive until the agent shuts down so this is not a real leak in production, however in out test suite, every testAgent that is started and stops leaks goroutines that never get cleaned up which accumulate consuming CPU and memory through subsequent test in the `agent` package which doesn't help our test flakiness.

This adds a Close method that doesn't invalidate or clean up the cache, and still allows concurrent blocking queries to run (for up to 10 mins which might still affect tests). But at least it doesn't maintain them forever with background refresh and an expiry watcher routine.

It would be nice to cancel any outstanding blocking requests as well when we close but that requires much more invasive surgery right into our RPC protocol since we don't have a way to cancel requests currently.

Unscientifically this seems to make tests pass a bit quicker and more reliably locally but I can't really be sure of that!
2018-10-04 11:27:11 +01:00
Hans Hasselberg 318bcb9bbb
Allow disabling the HTTP API again. (#4655)
If you provide an invalid HTTP configuration consul will still start again instead of failing. But if you do so the build-in proxy won't be able to start which you might need for connect.
2018-09-13 16:06:04 +02:00
Pierre Souchay 508b67c32a Ensure that Proxies ARE always cleaned up, event with DeregisterCriticalServiceAfter (#4649)
This fixes https://github.com/hashicorp/consul/issues/4648
2018-09-11 17:34:09 +01:00
Matt Keeler 61a5c965c9
Ensure that errors setting up the DNS servers get propagated back to the shell (#4598)
Fixes: #4578 

Prior to this fix if there was an error binding to ports for the DNS servers the error would be swallowed by the gated log writer and never output. This fix propagates the DNS server errors back to the shell with a multierror.
2018-09-07 10:48:29 -04:00
Matt Keeler da3ed5dc76
Fix #4515: Segfault when serf_wan port was -1 but reconnect_time_wan was set (#4531)
Fixes #4515 

This just slightly refactors the logic to only attempt to set the serf wan reconnect timeout when the rest of the serf wan settings are configured - thus avoiding a segfault.
2018-08-17 14:44:25 -04:00
Matt Keeler 5c7c58ed26
Gossip tuneables (#4444)
Expose a few gossip tuneables for both lan and wan interfaces

gossip_nodes
gossip_interval
probe_timeout
probe_interval
retransmit_mult
suspicion_mult
2018-07-26 11:39:49 -04:00
Mitchell Hashimoto 5c42dacef4
Merge pull request #4320 from hashicorp/f-alias-check
Add "Alias" Check Type
2018-07-20 13:01:33 -05:00
Matt Keeler 95e8f795df Use the agent logger instead of log module 2018-07-19 11:22:01 -04:00
Matt Keeler 953b72318f Persist proxies from config files
Also change how loadProxies works. Now it will load all persisted proxies into a map, then when loading config file proxies will look up the previous proxy token in that map.
2018-07-18 17:04:35 -04:00
Matt Keeler 9f8991e0cc Fix issue with choosing a client addr that is 0.0.0.0 or :: 2018-07-16 16:30:15 -04:00
Mitchell Hashimoto 65bbc12d69
agent: use the correct ACL token for alias checks 2018-07-12 10:17:53 -07:00
Mitchell Hashimoto 99ead8324f
agent: alias checks have no interval 2018-07-12 09:36:11 -07:00
Mitchell Hashimoto 75ea0a1ee7
agent: run alias checks 2018-07-12 09:36:10 -07:00
Paul Banks 6fe7faa554
Merge pull request #4381 from hashicorp/proxy-check-default
Proxy check default
2018-07-12 17:08:35 +01:00
Matt Keeler 0a365b1a4f
Merge pull request #4374 from hashicorp/feature/proxy-env-vars
Setup managed proxy environment with API client env vars
2018-07-12 09:13:54 -04:00
Paul Banks 9223102331
Default managed proxy TCP check address sanely when proxy is bound to 0.0.0.0.
This also provides a mechanism to configure custom address or disable the check entirely from managed proxy config.
2018-07-12 12:57:10 +01:00
Matt Keeler 1e5e9fd8cd PR Updates
Proxy now doesn’t need to know anything about the api as we pass env vars to it instead of the api config.
2018-07-11 09:44:54 -04:00
Matt Keeler 358e6c8f6a Pass around an API Config object and convert to env vars for the managed proxy 2018-07-10 12:13:51 -04:00
Matt Keeler 115893b7d8 Remove https://prefix from TLSConfig.Address 2018-07-09 12:31:15 -04:00
mkeeler 1da3c42867 Merge remote-tracking branch 'connect/f-connect' 2018-06-25 19:42:51 +00:00
Mitchell Hashimoto 54ad6fc050 agent: convert the proxy bind_port to int if it is a float 2018-06-25 12:26:18 -07:00
Paul Banks 1d6e1ace11 register TCP check for managed proxies 2018-06-25 12:25:40 -07:00
Paul Banks d1810ba338 Make proxy only listen after initial certs are fetched 2018-06-25 12:25:40 -07:00
Paul Banks 42e28fa4d1 Limit proxy telemetry config to only be visible with authenticated with a proxy token 2018-06-25 12:25:39 -07:00
Paul Banks ca68136ac7 Refactor to use embedded struct. 2018-06-25 12:25:39 -07:00
Paul Banks 2df422e1e5 Disable TestAgent proxy execution properly 2018-06-25 12:25:38 -07:00
Mitchell Hashimoto 0d457a3e71 agent: RemoveProxy also removes the proxy service 2018-06-25 12:25:12 -07:00
Mitchell Hashimoto c30affa4b6 agent/proxy: AllowRoot to disable executing managed proxies when root 2018-06-25 12:25:11 -07:00
Paul Banks d0674cdd7a Warn about killing proxies in dev mode 2018-06-25 12:24:16 -07:00
Paul Banks d140612350 Fixs a few issues that stopped this working in real life but not caught by tests:
- Dev mode assumed no persistence of services although proxy state is persisted which caused proxies to be killed on startup as their services were no longer registered. Fixed.
 - Didn't snapshot the ProxyID which meant that proxies were adopted OK from snapshot but failed to restart if they died since there was no proxyID in the ENV on restart
 - Dev mode with no persistence just kills all proxies on shutdown since it can't recover them later
 - Naming things
2018-06-25 12:24:14 -07:00
Paul Banks 3df45ac7f1 Don't kill proxies on agent shutdown; backport manager close fix 2018-06-25 12:24:13 -07:00
Paul Banks 3bac52480e Abandon daemonize for simpler solution (preserving history):
Reverts:
  - bdb274852ae469c89092d6050697c0ff97178465
  - 2c689179c4f61c11f0016214c0fc127a0b813bfe
  - d62e25c4a7ab753914b6baccd66f88ffd10949a3
  - c727ffbcc98e3e0bf41e1a7bdd40169bd2d22191
  - 31b4d18933fd0acbe157e28d03ad59c2abf9a1fb
  - 85c3f8df3eabc00f490cd392213c3b928a85aa44
2018-06-25 12:24:10 -07:00
Paul Banks 9cea27c66e Sanity check that we are never trying to self-exec a test binary. Add daemonize bypass for TestAgent so that we don't have to jump through ridiculous self-execution hooks for every package that might possibly invoke a managed proxy 2018-06-25 12:24:09 -07:00
Paul Banks c97db00903 Run daemon processes as a detached child.
This turns out to have a lot more subtelty than we accounted for. The test suite is especially prone to races now we can only poll the child and many extra levels of indirectoin are needed to correctly run daemon process without it becoming a Zombie.

I ran this test suite in a loop with parallel enabled to verify for races (-race doesn't find any as they are logical inter-process ones not actual data races). I made it through ~50 runs before hitting an error due to timing which is much better than before. I want to go back and see if we can do better though. Just getting this up.
2018-06-25 12:24:08 -07:00
Paul Banks 3a00574a13 Persist proxy state through agent restart 2018-06-25 12:24:08 -07:00
Mitchell Hashimoto 9249662c6c
agent: leaf endpoint accepts name, not service ID
This change is important so that requests can made representing a
service that may not be registered with the same local agent.
2018-06-14 09:42:20 -07:00
Paul Banks bd5e569dc7
Make invalid clusterID be fatal 2018-06-14 09:42:17 -07:00
Paul Banks 834ed1d25f
Fixed many tests after rebase. Some still failing and seem unrelated to any connect changes. 2018-06-14 09:42:16 -07:00
Mitchell Hashimoto c42510e1ec
agent/cache: implement refresh backoff 2018-06-14 09:42:14 -07:00
Mitchell Hashimoto b4f990bc6c
agent: verify local proxy tokens for CA leaf + tests 2018-06-14 09:42:14 -07:00
Mitchell Hashimoto 8f7b5f93cd
agent: verify proxy token for ProxyConfig endpoint + tests 2018-06-14 09:42:14 -07:00
Mitchell Hashimoto 1dfb4762f5
agent: increase timer for blocking cache endpoints 2018-06-14 09:42:12 -07:00
Mitchell Hashimoto 7bb13246a8
agent: clarify why we Kill still 2018-06-14 09:42:12 -07:00
Mitchell Hashimoto 147b066c67
agent: restore proxy snapshot but still Kill proxies 2018-06-14 09:42:12 -07:00
Mitchell Hashimoto 4301f7f1f5
agent: only set the proxy manager data dir if its set 2018-06-14 09:42:12 -07:00
Mitchell Hashimoto 5e0f0ba178
agent/proxy: write pid file whenever the daemon process changes 2018-06-14 09:42:11 -07:00
Mitchell Hashimoto 49bc7181a4
agent/proxy: send logs to the correct location for daemon proxies 2018-06-14 09:42:10 -07:00
Mitchell Hashimoto 52665f7d23
agent: clean up defaulting of proxy configuration
This cleans up and unifies how proxy settings defaults are applied.
2018-06-14 09:42:10 -07:00
Mitchell Hashimoto bae428326a
agent: use os.Executable 2018-06-14 09:42:09 -07:00
Mitchell Hashimoto 4722e3ef76
agent: fix crash that could happen if proxy was nil on load 2018-06-14 09:42:09 -07:00
Mitchell Hashimoto 669268f85c
agent: start proxy manager 2018-06-14 09:42:09 -07:00
Mitchell Hashimoto a2167a7fd1
agent/proxy: manager and basic tests, not great coverage yet coming soon 2018-06-14 09:42:08 -07:00
Mitchell Hashimoto f64a002f68
agent: start/stop proxies 2018-06-14 09:42:08 -07:00
Paul Banks dcd277de8a
Wire up agent leaf endpoint to cache framework to support blocking. 2018-06-14 09:42:07 -07:00
Paul Banks 153808db7c
Don't allow connect watches in agent/cli yet 2018-06-14 09:42:06 -07:00
Kyle Havlovitz 2167713226
Add CA config to connect section of agent config 2018-06-14 09:42:05 -07:00
Mitchell Hashimoto 73838c9afa
agent: use helper/retry instead of timing related tests 2018-06-14 09:42:04 -07:00
Mitchell Hashimoto dcb2671d10
agent/cache: address PR feedback, lots of typos 2018-06-14 09:42:03 -07:00
Mitchell Hashimoto a1f8cb9570
agent: augment /v1/connect/authorize to cache intentions 2018-06-14 09:42:02 -07:00
Mitchell Hashimoto 8bb4fd95a6
agent: initialize the cache and cache the CA roots 2018-06-14 09:42:00 -07:00
Paul Banks aed5e5b03e
Super ugly hack to get TeamCity build to work for this PR without adding a vendor that is being added elsewhere and will conflict... 2018-06-14 09:41:58 -07:00
Paul Banks cbd8606651
Add X-Consul-ContentHash header; implement removing all proxies; add load/unload test. 2018-06-14 09:41:57 -07:00
Paul Banks c2266b134a
HTTP agent registration allows proxy to be defined. 2018-06-14 09:41:57 -07:00
Paul Banks 78e48fd547
Added connect proxy config and local agent state setup on boot. 2018-06-14 09:41:57 -07:00
Matt Keeler f9d0323c0b Fixup a weird merge problem 2018-06-11 16:27:39 -04:00
Matt Keeler c5d9c2362f Merge branch 'master' of github.com:hashicorp/consul into rpc-limiting
# Conflicts:
#	agent/agent.go
#	agent/consul/client.go
2018-06-11 16:11:36 -04:00
Matt Keeler c589991452 Apply the limits to the clients rpcLimiter 2018-06-11 15:51:17 -04:00
Matt Keeler e043621dd3
Merge pull request #4156 from hashicorp/enterprise-coexistence
Enterprise/Licensing Cleanup
2018-06-05 10:50:32 -04:00
Matt Keeler 4858aa6be4 Add RunWithConfig and put Run signature back to normal 2018-05-31 20:22:14 -04:00
Matt Keeler 365e8d11ee Allow passing in a config to the watch plan to use when creating the API client
This allows watches from consul agent config (rather than consul watch command) to be able to utilize HTTPs
2018-05-31 17:07:36 -04:00
Matt Keeler 14661a417b Allow for easy enterprise/oss coexistence
Uses struct/interface embedding with the embedded structs/interfaces being empty for oss. Also methods on the server/client types are defaulted to do nothing for OSS
2018-05-24 10:36:42 -04:00
Preetha Appan e28c5fbb4e
Also make snapshot interval configurable 2018-05-11 10:43:24 -05:00
Preetha Appan eb4bc79118
Make raft snapshot commit threshold configurable 2018-05-11 10:43:24 -05:00
Kyle Havlovitz a480434517
Remove the script field from checks in favor of args 2018-05-08 15:31:53 -07:00
Jared Wasinger 9a1737a5f0 agent: reload limits upon restart 2018-04-08 14:28:29 -07:00
runsisi 2f09d10df5 minor fix for endpoints shutdown
Signed-off-by: runsisi <runsisi@zte.com.cn>
2018-03-29 21:45:46 +08:00
Matt Keeler b5cdbbd033
Merge pull request #3990 from hashicorp/b-gh-3854
Warn when node name isnt a valid DNS label
2018-03-29 09:04:47 -04:00
Preetha f91db69d6e
Merge pull request #3984 from hashicorp/f-allow-federation-disable
Allows disabling WAN federation by setting serf WAN port to -1
2018-03-27 16:05:53 -05:00
Matt Keeler fd9297ad8f Formatting update 2018-03-27 16:31:27 -04:00
Preetha Appan 17a011b9bd
fix typo and remove comment 2018-03-27 14:28:05 -05:00
Matt Keeler 2d8a68cce9 GH-3854: Warn when node name isnt a valid DNS label 2018-03-27 15:00:33 -04:00
Preetha Appan 512f9a50fc
Allows disabling WAN federation by setting serf WAN port to -1 2018-03-26 14:21:06 -05:00
Guido Iaquinti 244fc72b05 Add package name to log output 2018-03-21 15:56:14 +00:00
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
James Phillips 5b245c0201
Merge pull request #3845 from 42wim/tagfix
Fix service tags not added to health check. Part two
2018-02-05 16:18:00 -08:00
James Phillips 0aa05cc5f0
Merge pull request #3855 from hashicorp/pr-3782-slackpad
Adds support for gRPC health checks.
2018-02-02 17:57:27 -08:00
James Phillips 1a08e8c0f1
Changes "TLS" to "GRPCUseTLS" since it only applies to GRPC checks. 2018-02-02 17:29:34 -08:00
Wim 5cc76cce09 Fix service tags not added to health check. Part two 2018-01-29 20:32:44 +01:00
Veselkov Konstantin c2395d9bd0 fix refactoring 2018-01-28 22:53:30 +04:00
Veselkov Konstantin 05666113a4 remove golint warnings 2018-01-28 22:40:13 +04:00
Kyle Havlovitz b651253cb2
Don't remove the files, just log an error 2018-01-19 14:25:51 -08:00
Kyle Havlovitz 17ec4a9394
Add graceful handling of malformed persisted service/check files.
Previously a change was made to make the file writing atomic,
but that wasn't enough to cover something like an OS crash so we
needed something here to handle the situation more gracefully.

Fixes #1221.
2018-01-19 14:07:36 -08:00
Dmytro Kostiuchenko a45f6ad740 Add gRPC health-check #3073 2018-01-04 16:42:30 -05:00
James Phillips 518ab954bc
Merge pull request #3642 from yfouquet/master
[Fix] Service tags not added to health checks
2017-12-14 13:59:39 -08:00
James Phillips 63011dd393
Copies the autopilot settings from the runtime config.
Fixes #3730
2017-12-13 10:32:05 -08:00
Yoann Fouquet f4f7db0059 [Fix] Service tags not added to health checks
Since commit 9685bdcd0ba4b4b3adb04f9c1dd67d637ca7894e, service tags are added to the health checks.
Otherwise, when adding a service, tags are not added to its check.

In updateSyncState, we compare the checks of the local agent with the checks of the catalog.
It appears that the service tags are different (missing in one case), and so the check is synchronized.
That increase the ModifyIndex periodically when nothing changes.

Fixed it by adding serviceTags to the check.

Note that the issue appeared in version 0.8.2.
Looks related to #3259.
2017-12-12 13:39:37 +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
James Phillips 8709f65afd
Adds HTTP/2 support to Consul's HTTPS server. (#3657)
* Refactors the HTTP listen path to create servers in the same spot.

* Adds HTTP/2 support to Consul's HTTPS server.

* Vendors Go HTTP/2 library and associated deps.
2017-11-07 15:06:59 -08:00
Kyle Havlovitz bc3ba5f873
Merge branch 'master' into esm-changes 2017-11-01 11:37:48 -07:00
Frank Schroeder 7d05e55734
docker: stop previous check on replace 2017-10-26 12:03:07 +02:00
Kyle Havlovitz 16908be034
Add deregister critical service field and refactor duration parsing 2017-10-25 19:17:41 -07:00
Frank Schroeder 1dab004335
Decouple the code that executes checks from the agent 2017-10-25 11:18:07 +02:00
Frank Schroeder 29435004f6
ae: fix typo in constructor name 2017-10-23 10:56:05 +02:00
Frank Schroeder da604495a0
local state: address review comments
* move non-blocking notification mechanism into ae.Trigger
* move Pause/Resume into separate type
2017-10-23 10:56:04 +02:00
Frank Schroeder ea92ee308a
local state: tests compile 2017-10-23 10:56:03 +02:00
Frank Schroeder 7289576988
local state: replace multi-map state with structs
The state of the service and health check records was spread out over
multiple maps guarded by a single lock. Access to the maps has to happen
in a coordinated effort and the tests often violated this which made
them brittle and racy.

This patch replaces the multiple maps with a single one for both checks
and services to make the code less fragile.

This is also necessary since moving the local state into its own package
creates circular dependencies for the tests. To avoid this the tests can
no longer access internal data structures which they should not be doing
in the first place.

The tests still don't compile but this is a ncessary step in that
direction.
2017-10-23 10:56:03 +02:00
Frank Schroeder bc7571cccf
local state: move to separate package
This patch moves the local state to a separate package to further
decouple it from the agent code.

The code compiles but the tests do not yet.
2017-10-23 10:56:03 +02:00
Frank Schroeder b363586813
agent: simplify some loops 2017-10-23 10:56:03 +02:00
Frank Schroeder 8cc4ee886d
agent: cleanup StateSyncer
This patch cleans up the state syncer code by renaming fields, adding
helpers and documentation.
2017-10-23 10:56:03 +02:00
Frank Schroeder e7051da8d1
agent: decouple anti-entropy from local state
The anti-entropy code manages background synchronizations of the local
state on a regular basis or on demand when either the state has changed
or a new consul server has been added.

This patch moves the anti-entropy code into its own package and
decouples it from the local state code since they are performing
two different functions.

To simplify code-review this revision does not make any optimizations,
renames or refactorings. This will happen in subsequent commits.
2017-10-23 10:56:03 +02:00
Frank Schroeder 759350b61f
Revert "agent: decouple anti-entropy from local state"
This reverts commit a842dc9c2bf00855ef93211232da36b2d91eab5b.
2017-10-23 10:08:35 +02:00
Frank Schroeder 0d0233acd7
Revert "agent: cleanup StateSyncer"
This reverts commit b7136e100bef727144c202ae55f81152ac6a8b5f.
2017-10-23 10:08:35 +02:00
Frank Schroeder a96798f441
Revert "agent: simplify some loops"
This reverts commit b5dbad910c63b29dadf10731808d6891067a2bfa.
2017-10-23 10:08:34 +02:00
Frank Schroeder 443fe8e4db
Revert "local state: move to separate package"
This reverts commit d447e823c63720c74bb02459a985724f035f023e.
2017-10-23 10:08:34 +02:00
Frank Schroeder 435b442c8b
Revert "local state: replace multi-map state with structs"
This reverts commit ccbae7da5bceeb2328ab7993a8badbf2e72a4597.
2017-10-23 10:08:34 +02:00
Frank Schroeder 138aa25280
Revert "local state: tests compile"
This reverts commit 1af52bf7be02d952e16e14209899a9715451f7ba.
2017-10-23 10:08:34 +02:00
Frank Schroeder c72d21813b
Revert "local state: address review comments"
This reverts commit 1d315075b15647db7fcd42986c9c5673cbb77a77.
2017-10-23 10:08:33 +02:00
Frank Schroeder 7a92839663
Revert "ae: fix typo in constructor name"
This reverts commit e88f49e2ccc79f77b5395de28d8fbdfc6eeb36f6.
2017-10-23 10:08:32 +02:00
Frank Schroeder 0cfe0a42f1 ae: fix typo in constructor name 2017-10-23 08:03:18 +02:00
Frank Schroeder 40e17f9f01 local state: address review comments
* move non-blocking notification mechanism into ae.Trigger
* move Pause/Resume into separate type
2017-10-23 08:03:18 +02:00
Frank Schroeder 884f98f8aa local state: tests compile 2017-10-23 08:03:18 +02:00
Frank Schroeder 60095484c4 local state: replace multi-map state with structs
The state of the service and health check records was spread out over
multiple maps guarded by a single lock. Access to the maps has to happen
in a coordinated effort and the tests often violated this which made
them brittle and racy.

This patch replaces the multiple maps with a single one for both checks
and services to make the code less fragile.

This is also necessary since moving the local state into its own package
creates circular dependencies for the tests. To avoid this the tests can
no longer access internal data structures which they should not be doing
in the first place.

The tests still don't compile but this is a ncessary step in that
direction.
2017-10-23 08:03:18 +02:00
Frank Schroeder ef9aa6b3b6 local state: move to separate package
This patch moves the local state to a separate package to further
decouple it from the agent code.

The code compiles but the tests do not yet.
2017-10-23 08:03:18 +02:00
Frank Schroeder c03eba91d0 agent: simplify some loops 2017-10-23 08:03:18 +02:00
Frank Schroeder 5302479ad5 agent: cleanup StateSyncer
This patch cleans up the state syncer code by renaming fields, adding
helpers and documentation.
2017-10-23 08:03:18 +02:00
Frank Schroeder 034ee43cef agent: decouple anti-entropy from local state
The anti-entropy code manages background synchronizations of the local
state on a regular basis or on demand when either the state has changed
or a new consul server has been added.

This patch moves the anti-entropy code into its own package and
decouples it from the local state code since they are performing
two different functions.

To simplify code-review this revision does not make any optimizations,
renames or refactorings. This will happen in subsequent commits.
2017-10-23 08:03:18 +02:00
Hadar Greinsmark 0c5f5e2821 Implement HTTP Watch handler (#3413)
Implement HTTP Watch handler
2017-10-21 20:39:09 -05:00
Frank Schröder 9b2e3c2091 agent: add option to discard health output (#3562)
* agent: add option to discard health output

In high volatile environments consul will have checks with "noisy"
output which changes every time even though the status does not change.
Since the output is stored in the raft log every health check update
unblocks a blocking call on health checks since the raft index has
changed even though the status of the health checks may not have changed
at all. By discarding the output of the health checks the users can
choose a different tradeoff. Less visibility on why a check failed in
exchange for a reduced change rate on the raft log.

* agent: discard output also when adding a check

* agent: add test for discard check output

* agent: update docs

* go vet

* Adds discard_check_output to reloadable config table.

* Updates the change log.
2017-10-10 17:04:52 -07:00
preetapan f6066f8305 Fixes agent error handling when check definition is invalid. Distingu… (#3560)
* Fixes agent error handling when check definition is invalid. Distinguishes between empty checks vs invalid checks

* Made CheckTypes return Checks from service definition struct rather than a new copy, and other changes from code review. This also errors when json payload contains empty structs

* Simplify and improve validate method, and make sure that CheckTypes always returns a new copy of validated check definitions

* Tweaks some small style things and error messages.

* Updates the change log.
2017-10-10 16:54:06 -07:00
James Phillips d1ad538345 Makes RPC handling more robust when rolling servers. (#3561)
* Adds client-side retry for no leader errors.

This paves over the case where the client was connected to the leader
when it loses leadership.

* Adds a configurable server RPC drain time and a fail-fast path for RPCs.

When a server leaves it gets removed from the Raft configuration, so it will
never know who the new leader server ends up being. Without this we'd be
doomed to wait out the RPC hold timeout and then fail. This makes things fail
a little quicker while a sever is draining, and since we added a client retry
AND since the server doing this has already shut down and left the Serf LAN,
clients should retry against some other server.

* Makes the RPC hold timeout configurable.

* Reorders struct members.

* Sets the RPC hold timeout default for test servers.

* Bumps the leave drain time up to 5 seconds.

* Robustifies retries with a simpler client-side RPC hold.

* Reverts untended delete.
2017-10-10 15:19:50 -07:00
James Phillips 97b580f593
Adds script warning and fixes Docker args recognition. 2017-10-04 21:41:27 -07:00
Kyle Havlovitz be04bfed34 Clean up subprocess handling and make shell use optional (#3509)
* Clean up handling of subprocesses and make using a shell optional

* Update docs for subprocess changes

* Fix tests for new subprocess behavior

* More cleanup of subprocesses

* Minor adjustments and cleanup for subprocess logic

* Makes the watch handler reload test use the new path.

* Adds check tests for new args path, and updates existing tests to use new path.

* Adds support for script args in Docker checks.

* Fixes the sanitize unit test.

* Adds panic for unknown watch type, and reverts back to Run().

* Adds shell option back to consul lock command.

* Adds shell option back to consul exec command.

* Adds shell back into consul watch command.

* Refactors signal forwarding and makes Windows-friendly.

* Adds a clarifying comment.

* Changes error wording to a warning.

* Scopes signals to interrupt and kill.

This avoids us trying to send SIGCHILD to the dead process.

* Adds an error for shell=false for consul exec.

* Adds notes about the deprecated script and handler fields.

* De-nests an if statement.
2017-10-04 16:48:00 -07:00
Preetha Appan d5acfc3982 Introduces new 'list' permission that applies to KV store recursive reads, and enforced only when opted in. 2017-10-02 17:10:21 -05:00
Frank Schroeder 6b3a957c5e use ports from derived addresses 2017-09-29 20:26:43 +02:00
Kyle Havlovitz 3460506264 Fix watch error when http & https are disabled (#3493)
Remove an error in watch reloading that happens when http and https
are both disabled, and use an https address for running watches if
no http addresses are present.

Fixes #3425.
2017-09-26 13:47:27 -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