Commit Graph

41 Commits (7ed356b3380f1552ecf9a273c69371b883bcc821)

Author SHA1 Message Date
Daniel Nephin b058845110 sdk: add TestLogLevel for setting log level in tests
And default log level to WARN.
2022-02-03 13:42:28 -05:00
R.B. Boyer b1605639fc
light refactors to support making partitions and serf-based wan federation are mutually exclusive (#11755) 2021-12-06 13:18:02 -06:00
R.B. Boyer e20e6348dd
areas: make the gRPC server tracker network area aware (#11748)
Fixes a bug whereby servers present in multiple network areas would be
properly segmented in the Router, but not in the gRPC mirror. This would
lead servers in the current datacenter leaving from a network area
(possibly during the network area's removal) from deleting their own
records that still exist in the standard WAN area.

The gRPC client stack uses the gRPC server tracker to execute all RPCs,
even those targeting members of the current datacenter (which is unlike
the net/rpc stack which has a bypass mechanism).

This would manifest as a gRPC method call never opening a socket because
it would block forever waiting for the current datacenter's pool of
servers to be non-empty.
2021-12-06 09:55:54 -06:00
Mohammad Banikazemi bcadd341eb Correcting the changed function name in comment
Signed-off-by: Mohammad Banikazemi <mbanikazemi@gmail.com>
2021-02-06 20:23:40 -05:00
Daniel Nephin b9e60c0775 testing: skip slow tests with -short
Add a skip condition to all tests slower than 100ms.

This change was made using `gotestsum tool slowest` with data from the
last 3 CI runs of master.
See https://github.com/gotestyourself/gotestsum#finding-and-skipping-slow-tests

With this change:

```
$ time go test -count=1 -short ./agent
ok      github.com/hashicorp/consul/agent       0.743s

real    0m4.791s

$ time go test -count=1 -short ./agent/consul
ok      github.com/hashicorp/consul/agent/consul        4.229s

real    0m8.769s
```
2020-12-07 13:42:55 -05:00
Daniel Nephin 0003720f78 agent/router: refactor calculation of delay between rebalances.
This change attempts to make the delay logic more obvious by:

* remove indirection, inline a bunch of function calls
* move all the code and constants next to each other
* replace the two constant values with a single value
* reword the comments.
2020-10-15 15:59:36 -04:00
Daniel Nephin 119c446cf2 agent/router: Add bounds test cases 2020-10-15 14:43:29 -04:00
Daniel Nephin 12e174900b router: organize the test by number of servers
And adddd some additional cases to show where the minimum value stops being used
2020-10-15 13:53:37 -04:00
Daniel Nephin 8697cc2b45 router: make refreshServerRebalanceTimer test a lot more strict 2020-10-15 12:05:07 -04:00
Daniel Nephin 2294793357 agent/grpc: use router.Manager to handle the rebalance
The router.Manager is already rebalancing servers for other connection pools, so it can call into our resolver to do the same.
This change allows us to remove the serf dependency from resolverBuilder, and remove Datacenter from the config.

Also revert the change to refreshServerRebalanceTimer
2020-09-24 12:53:14 -04:00
Daniel Nephin 07b4507f1e router: remove grpcServerTracker from managers
It only needs to be refereced from the Router, because there is only 1 instance, and the
Router can call AddServer/RemoveServer like it does on the Manager.
2020-09-24 12:53:14 -04:00
Daniel Nephin f936ca5aea grpc: client conn pool and resolver
Extracted from 936522a13c

Co-authored-by: Paul Banks <banks@banksco.de>
2020-09-24 12:46:22 -04:00
Pierre Souchay 638dcd3360 [BUGFIX] Avoid GetDatacenter* methods to flood Consul servers logs
When calling `GetDatacentersByDistance()` or `GetDatacentersMap()`, an
incorrect condition was used to diplay log message, thus flooding
Consul's logs.

Example of message:

```
  [WARN] agent.router: Non-server in server-only area: non_server=myClientNode area=lan
```

This message is only valid for WAN areas, filter to avoid creating
hundreds of logs/s on our clusters, each time someone is calling this
method.

Our logs were flooded by such messages when migrating our Consul servers
from 1.7.7 to 1.8.4.

This will issue fix #8663
2020-09-15 11:54:59 +02:00
Matt Keeler f97cc0445a
Move RPC router from Client/Server and into BaseDeps (#8559)
This will allow it to be a shared component which is needed for AutoConfig
2020-08-27 11:23:52 -04:00
Hans Hasselberg aff02198d7 Refactor keyring ops:
* changes some functions to return data instead of modifying pointer
  arguments
* renames globalRPC() to keyringRPCs() to make its purpose more clear
* restructures KeyringOperation() to make it more understandable
2020-08-11 13:42:03 +02:00
Hans Hasselberg 51a8e15cf8
Mark its own cluster as healthy when rebalancing. (#8406)
This code started as an optimization to avoid doing an RPC Ping to
itself. But in a single server cluster the rebalancing was led to
believe that there were no healthy servers because foundHealthyServer
was not set. Now this is being set properly.

Fixes #8401 and #8403.
2020-08-06 10:42:09 +02:00
Daniel Nephin 068b43df90 Enable gofmt simplify
Code changes done automatically with 'gofmt -s -w'
2020-06-16 13:21:11 -04:00
Hans Hasselberg 0f343332da
Merge pull request #7966 from hashicorp/pool_improvements
Agent connection pool cleanup
2020-06-04 08:56:26 +02:00
Matt Keeler 0e4c65d422
Fix segfault due to race condition for checking server versions (#7957)
The ACL monitoring routine uses c.routers to check for server version updates. Therefore it needs to be started after initializing the routers.
2020-06-03 10:36:32 -04:00
Hans Hasselberg c45432014b pool: remove version
The version field has been used to decide which multiplexing to use. It
was introduced in 2457293dce. But this is
6y ago and there is no need for this differentiation anymore.
2020-05-28 23:06:01 +02:00
Daniel Nephin c88fae0aac ci: Add staticcheck and fix most errors
Three of the checks are temporarily disabled to limit the size of the
diff, and allow us to enable all the other checks in CI.

In a follow up we can fix the issues reported by the other checks one
at a time, and enable them.
2020-05-28 11:59:58 -04:00
Daniel Nephin c662f0f0de Fix a number of problems found by staticcheck
Some of these problems are minor (unused vars), but others are real bugs (ignored errors).

Co-authored-by: Matt Keeler <mkeeler@users.noreply.github.com>
2020-05-19 16:50:14 -04:00
Hans Hasselberg 096a2f2f02 network_segments: stop advertising segment tags 2020-05-05 21:32:05 +02:00
Hans Hasselberg 995a24b8e4 agent: refactor to use a single addrFn 2020-05-05 21:08:10 +02:00
Hans Hasselberg 6994c0d47f agent: rename local/global to src/dst 2020-05-05 21:07:34 +02:00
Hans Hasselberg 51549bd232
rpc: oss changes for network area connection pooling (#7735) 2020-04-30 22:12:17 +02:00
Pierre Souchay 5e79efc80f Fixed comment on wrong line.
While investigating and fixing an issue on our 1.5.1 branch,
I saw you also/already fixed the bug I found (tags not updated
for existing servers), but comment is misplaced.
2020-04-24 01:15:15 +02:00
R.B. Boyer 6adad71125
wan federation via mesh gateways (#6884)
This is like a Möbius strip of code due to the fact that low-level components (serf/memberlist) are connected to high-level components (the catalog and mesh-gateways) in a twisty maze of references which make it hard to dive into. With that in mind here's a high level summary of what you'll find in the patch:

There are several distinct chunks of code that are affected:

* new flags and config options for the server

* retry join WAN is slightly different

* retry join code is shared to discover primary mesh gateways from secondary datacenters

* because retry join logic runs in the *agent* and the results of that
  operation for primary mesh gateways are needed in the *server* there are
  some methods like `RefreshPrimaryGatewayFallbackAddresses` that must occur
  at multiple layers of abstraction just to pass the data down to the right
  layer.

* new cache type `FederationStateListMeshGatewaysName` for use in `proxycfg/xds` layers

* the function signature for RPC dialing picked up a new required field (the
  node name of the destination)

* several new RPCs for manipulating a FederationState object:
  `FederationState:{Apply,Get,List,ListMeshGateways}`

* 3 read-only internal APIs for debugging use to invoke those RPCs from curl

* raft and fsm changes to persist these FederationStates

* replication for FederationStates as they are canonically stored in the
  Primary and replicated to the Secondaries.

* a special derivative of anti-entropy that runs in secondaries to snapshot
  their local mesh gateway `CheckServiceNodes` and sync them into their upstream
  FederationState in the primary (this works in conjunction with the
  replication to distribute addresses for all mesh gateways in all DCs to all
  other DCs)

* a "gateway locator" convenience object to make use of this data to choose
  the addresses of gateways to use for any given RPC or gossip operation to a
  remote DC. This gets data from the "retry join" logic in the agent and also
  directly calls into the FSM.

* RPC (`:8300`) on the server sniffs the first byte of a new connection to
  determine if it's actually doing native TLS. If so it checks the ALPN header
  for protocol determination (just like how the existing system uses the
  type-byte marker).

* 2 new kinds of protocols are exclusively decoded via this native TLS
  mechanism: one for ferrying "packet" operations (udp-like) from the gossip
  layer and one for "stream" operations (tcp-like). The packet operations
  re-use sockets (using length-prefixing) to cut down on TLS re-negotiation
  overhead.

* the server instances specially wrap the `memberlist.NetTransport` when running
  with gateway federation enabled (in a `wanfed.Transport`). The general gist is
  that if it tries to dial a node in the SAME datacenter (deduced by looking
  at the suffix of the node name) there is no change. If dialing a DIFFERENT
  datacenter it is wrapped up in a TLS+ALPN blob and sent through some mesh
  gateways to eventually end up in a server's :8300 port.

* a new flag when launching a mesh gateway via `consul connect envoy` to
  indicate that the servers are to be exposed. This sets a special service
  meta when registering the gateway into the catalog.

* `proxycfg/xds` notice this metadata blob to activate additional watches for
  the FederationState objects as well as the location of all of the consul
  servers in that datacenter.

* `xds:` if the extra metadata is in place additional clusters are defined in a
  DC to bulk sink all traffic to another DC's gateways. For the current
  datacenter we listen on a wildcard name (`server.<dc>.consul`) that load
  balances all servers as well as one mini-cluster per node
  (`<node>.server.<dc>.consul`)

* the `consul tls cert create` command got a new flag (`-node`) to help create
  an additional SAN in certs that can be used with this flavor of federation.
2020-03-09 15:59:02 -05:00
Matt Keeler 61d8778210
Sync some feature flag support from enterprise (#7167) 2020-01-29 13:21:38 -05:00
Chris Piraino 401221de58
Allow users to configure either unstructured or JSON logging (#7130)
* hclog Allow users to choose between unstructured and JSON logging
2020-01-28 17:50:41 -06:00
Hans Hasselberg b6499fe6b8 Do not surface left servers (#6420)
* do not surface left servers in catalog
2019-10-08 22:16:00 -05:00
Pierre Souchay be50400c62 Distinguish between DC not existing and not being available (#6399) 2019-09-03 09:46:24 -06:00
Christian Muehlhaeuser 7753b97cc7 Simplified code in various places (#6176)
All these changes should have no side-effects or change behavior:

- Use bytes.Buffer's String() instead of a conversion
- Use time.Since and time.Until where fitting
- Drop unnecessary returns and assignment
2019-07-20 09:37:19 -04:00
Matt Keeler 200c0fb3e9
Call RemoveServer for reap events (#5317)
This ensures that servers are removed from RPC routing when they are reaped.
2019-03-04 09:19:35 -05:00
Josh Soref 94835a2715 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 d9a6e2a901
Makes server manager shift away from failed servers from Serf events.
Because this code was doing pointer equality checks, it would work for
the case of a failed attempted RPC because the objects are from the
manager itself:

https://github.com/hashicorp/consul/blob/v1.0.3/agent/consul/rpc.go#L283-L302

But the pointer check would always fail for events coming in from the
Serf path because the server object is newly-created:

https://github.com/hashicorp/consul/blob/v1.0.3/agent/router/serf_adapter.go#L14-L40

This means that we didn't proactively shift RPC traffic away from a
failed server, we'd have to wait for an RPC to fail, which exposes
the error to the calling client.

By switching over to a name check vs. a pointer check we get the correct
behavior. We added a DEBUG log as well to help observe this behavior during
integrated testing.

Related to #3863 since the fix here needed the same logic duplicated, owing
to the complicated atomic stuff.

/cc @dadgar for a heads up in case this also affects Nomad.
2018-02-05 17:56:00 -08:00
James Phillips 85e678fbdd
Saves the cycled server list after a failed ping when rebalancing. (#3662)
Fixes #3463
2017-11-07 18:13:23 -08:00
Kyle Havlovitz 14b027a3c2
Add segment addr field to tags for LAN flood joiner 2017-08-30 11:58:29 -07:00
Frank Schroeder 16c58da27d agent: drop unused code
This code from http://github.com/hashicorp/consul/pull/3353 is no longer
required.
2017-08-22 00:02:46 +02:00
Frank Schroeder 7cff50a4df
agent: move agent/consul/agent to agent/metadata 2017-08-09 14:36:52 +02:00
Frank Schroeder c395599cea
agent: move agent/consul/servers to agent/router 2017-08-09 14:36:37 +02:00