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Author SHA1 Message Date
Michael Schurter ee04717a0b initial attempt at refactoring blocked/migrating 2017-08-11 16:21:35 -07:00
Alex Dadgar ecee5e370e initial watcher 2017-07-07 12:07:08 -07:00
Michael Schurter 644f0cfaa4 Consistently quote alloc ids in client logs 2017-07-06 10:24:52 -07:00
Michael Schurter 4fd9ef6a8c Tiny client race condition fix 
Plus some logging improvements that may help with #2563
 2017-07-05 16:15:19 -07:00
Michael Schurter 596727230b Suggest wiping out alloc dir too 2017-07-03 12:29:21 -07:00
Michael Schurter 11f68bfca2 Add more logging to restore state errors 2017-07-03 11:58:41 -07:00
Mark Mickan c196d320f8 Add tests for migrating symlinks in alloc and local directories 2017-06-04 15:56:22 +09:30
Mark Mickan 236f24c9a4 Include symlinks in snapshots when migrating disks 
Fixes #2685
 2017-06-04 00:36:18 +09:30
Alex Dadgar b1eea2269a Fix deadlock 2017-05-31 14:05:47 -07:00
Michael Schurter ffc2b36dc7 Merge pull request #2636 from hashicorp/f-gc-alloc-limit 
Add new gc_max_allocs tuneable
 2017-05-30 16:14:09 -07:00
Michael Schurter dd51aa1cb9 Merge pull request #2654 from hashicorp/f-env-consul 
Add envconsul-like support and refactor environment handling
 2017-05-30 14:40:14 -07:00
Alex Dadgar 28aef447e9 Fix perms to just set exec bit 2017-05-25 14:44:13 -07:00
Michael Schurter fd9bef768f Move task env into execcontext 
Also inject PATH into rkt commands since we're no longer appending host
env vars for it.
 2017-05-23 13:53:34 -07:00
Michael Schurter 3841692138 gc_max_allocs should include blocked & migrating 2017-05-12 16:03:22 -07:00
Michael Schurter 0453c2709c Add new gc_max_allocs tuneable 
More than gc_max_allocs may be running on a node, but terminal allocs
will be garbage collected to try to keep the total number below the
limit.
 2017-05-11 17:18:02 -07:00
Alex Dadgar 68c3a2bd98 Fix vet errors 2017-05-11 13:08:08 -07:00
Alex Dadgar 843bc26e5d Respond to comments 2017-05-09 10:50:24 -07:00
Alex Dadgar e00f9c9413 Restore state + upgrade path 2017-05-02 18:21:49 -07:00
Alex Dadgar ec101b4760 Revert "metrics" 
This reverts commit 4d6a012c6fb6f1fba6c62985d091b1a20c3198e7.
 2017-05-02 09:28:11 -07:00
Alex Dadgar 8e516b5dc2 Async and sync saving of client state 2017-05-01 16:16:53 -07:00
Alex Dadgar a7fd08d42a perf 2017-05-01 16:01:50 -07:00
Alex Dadgar e010fdf8c0 metrics 2017-05-01 14:51:27 -07:00
Alex Dadgar b94f855326 boltDB database for client state 2017-05-01 14:50:34 -07:00
Michael Schurter e204a287ed Refactor Consul Syncer into new ServiceClient 
Fixes #2478 #2474 #1995 #2294

The new client only handles agent and task service advertisement. Server
discovery is mostly unchanged.

The Nomad client agent now handles all Consul operations instead of the
executor handling task related operations. When upgrading from an
earlier version of Nomad existing executors will be told to deregister
from Consul so that the Nomad agent can re-register the task's services
and checks.

Drivers - other than qemu - now support an Exec method for executing
abritrary commands in a task's environment. This is used to implement
script checks.

Interfaces are used extensively to avoid interacting with Consul in
tests that don't assert any Consul related behavior.
 2017-04-19 12:42:47 -07:00
Alex Dadgar 2321e8a4a0 Hash host ID so its stable and well distributed 
This PR takes the host ID and runs it through a hash so that it is well
distributed. This makes it so that machines that report similar host IDs
are easily distinguished.

Instances of similar IDs occur on EC2 where the ID is prefixed and on
motherboards created in the same batch.

Fixes https://github.com/hashicorp/nomad/issues/2534
 2017-04-10 11:44:51 -07:00
Alex Dadgar 81b78f77e1 Track task start/finish time & improve logs errors 
This PR adds tracking to when a task starts and finishes and the logs
API takes advantage of this and returns better errors when asking for
logs that do not exist.
 2017-03-31 16:14:11 -07:00
Alex Dadgar 5e7e19de4b Merge pull request #2461 from hashicorp/b-groups 
Various fixes for setting user/group of task
 2017-03-28 11:13:27 -07:00
Alex Dadgar 4ecebe7d8c Proper reference counting through task restarts 
This PR fixes an issue in which the reference count on a Docker image
would become inflated through task restarts.
 2017-03-25 17:05:53 -07:00
Alex Dadgar a171a014b3 Various fixes for setting user/group of task 
This PR fixes two issues:
* Folder permissions in -dev mode were incorrect and not suitable for
running as a particular user.
* Was not setting the group membership properly for the launched
process.

Fixes https://github.com/hashicorp/nomad/issues/2160
 2017-03-20 14:21:13 -07:00
Alex Dadgar 70e4feb045 Limit parallelism during garbage collection 
This PR introduces a parallelism limit during garbage collection. This
is used to avoid large resource usage spikes if garbage collecting many
allocations at once.
 2017-03-10 16:27:00 -08:00
Alex Dadgar 9011a7984c Add metrics to show allocations on the client 
This PR adds the following metrics to the client:
client.allocations.migrating
client.allocations.blocked
client.allocations.pending
client.allocations.running
client.allocations.terminal

Also adds some missing fields to the API version of the evaluation.
 2017-03-09 12:37:41 -08:00
Alex Dadgar 5be806a3df Fix vet script and fix vet problems 
This PR fixes our vet script and fixes all the missed vet changes.

It also fixes pointers being printed in `nomad stop <job>` and `nomad
node-status <node>`.
 2017-02-27 16:00:19 -08:00
Alex Dadgar 6910678c21 Allow random UUID 2017-02-27 13:42:37 -08:00
Alex Dadgar 7203dee7ab Add allocated/unallocated metrics to client 2017-02-16 18:28:11 -08:00
Sean Chittenden c4c321c770
Unconditionally lowercase the node ID read from disk. 2017-02-06 16:20:17 -08:00
Sean Chittenden adb5be23ef
Add better verification of a host's HostID. 2017-02-02 16:24:32 -08:00
Sean Chittenden bb4347e277
Slight mis-merge: secret-id in dev mode is random and needs to be returned. 2017-02-01 22:20:52 -08:00
Sean Chittenden bb422a2258
Generate a durable NodeID if possible, otherwise fall back to a random HostID. 2017-02-01 22:11:33 -08:00
Diptanu Choudhury 11d7cb1230 Making the GC related fields tunable 2017-01-31 15:51:20 -08:00
Diptanu Choudhury 84a491f85a Locking appropriately before closing the channel to indicate migration 2017-01-23 10:46:57 -08:00
Michael Schurter 054ee8df59 Fix index we get allocs by 2017-01-20 16:30:40 -08:00
Diptanu Choudhury 1999b7eebb Merge pull request #2159 from hashicorp/b-consul-config 
Fixed merging consul config
 2017-01-18 16:14:54 -08:00
Diptanu Choudhury e927de02d2 Moved functions to helper from structs 2017-01-18 15:55:14 -08:00
Alex Dadgar 5d2b56b387 Random wait 2017-01-11 13:24:23 -08:00
Alex Dadgar c19985244a GetAllocs uses a blocking query 
This PR makes GetAllocs use a blocking query as well as adding a sanity
check to the clients watchAllocation code to ensure it gets the correct
allocations.

This PR fixes https://github.com/hashicorp/nomad/issues/2119 and
https://github.com/hashicorp/nomad/issues/2153.

The issue was that the client was talking to two different servers, one
to check which allocations to pull and the other to pull those
allocations.  However the latter call was not with a blocking query and
thus the client would not retreive the allocations it requested.

The logging has been improved to make the problem more clear as well.
 2017-01-10 13:30:35 -08:00
Michael Schurter 86fcf96f72 Put a logger in AllocDir/TaskDir 2017-01-05 16:31:56 -08:00
Diptanu Choudhury 247bda9a88 Unlocking if we return before adding a new alloc runner 2017-01-05 13:18:48 -08:00
Diptanu Choudhury 9721a1ab04 Fixed how alloc lock is held 2017-01-05 13:06:56 -08:00
Michael Schurter 13064768ac Fix race when shutting down in dev mode 
Client.Shutdown holds the allocLock when destroying alloc runners in dev
mode.

Client.updateAllocStatus can be called during AllocRunner shutdown and
calls getAllocRunners which tries to acquire allocLock.RLock. This
deadlocks since Client.Shutdown already has the write lock.

Switching Client.Shutdown to use getAllocRunners and not hold a lock
during AllocRunner shutdown is the solution.
 2017-01-03 17:21:50 -08:00
Michael Schurter 4a9a574d9d Merge pull request #2054 from hashicorp/f-prestart 
Add Driver.Prestart method
 2016-12-20 16:18:56 -08:00
Diptanu Choudhury b6120e2fc8 Removing the alloc runner from GC if it is destroyed by the server 2016-12-20 11:14:22 -08:00
Diptanu Choudhury 6e6e0d364a Added comments 2016-12-20 10:49:48 -08:00
Diptanu Choudhury 36b5545d6b Making the gc allocator understand real disk usage 2016-12-16 18:34:59 -08:00
Diptanu Choudhury 7aef9bcabe Added the stats collector to GC 2016-12-14 15:11:11 -08:00
Diptanu Choudhury e855cd587b Refactored hoststats collector 2016-12-14 15:07:42 -08:00
Diptanu Choudhury 0ffd92668d GC-ing before we start a new allocation 2016-12-14 15:04:06 -08:00
Diptanu Choudhury afdaa979f7 Added a garbage collector for allocations 2016-12-14 15:01:12 -08:00
Alex Dadgar 648ad2ebc5 Merge pull request #2096 from hashicorp/b-addAlloc 
Fix race and remove panic
 2016-12-13 13:50:17 -08:00
Diptanu Choudhury 53fb09023c cancelling waiting for remote allocation if the alloc doesn't need migration 2016-12-13 13:06:33 -08:00
Alex Dadgar 3cbd237512 Fix race and remove panic 2016-12-13 12:34:23 -08:00
Christoffer Kylvåg 6a1f32b8ba #1680: Continue after not being able to stat a mountpoint 2016-12-13 12:28:57 +01:00
Diptanu Choudhury cbf73908ff Setting the appropriate file permissions which un-archiving compressed alloc dir 2016-12-05 17:04:43 -08:00
Diptanu Choudhury bc17cacca0 Merge pull request #2017 from hashicorp/b-sticky 
Not moving alloc data when sticky is turned off
 2016-12-05 14:11:45 -08:00
Diptanu Choudhury 21f49564d3 Not moving alloc data when sticky is turned off 2016-12-05 14:00:01 -08:00
Michael Schurter 770ed703d0 Add Driver.Prestart method 
The Driver.Prestart method currently does very little but lays the
foundation for where lifecycle plugins can interleave execution _after_
task environment setup but _before_ the task starts.

Currently Prestart does two things:

* Any driver specific task environment building
* Download Docker images

This change also attaches a TaskEvent emitter to Drivers, so they can
emit events during task initialization.
 2016-12-02 11:03:48 -08:00
Alex Dadgar 86ed1fb2e5 Disallow stale queries when deriving Vault tokens 
This PR disallows stale queries when deriving a Vault token. Allowing
stale queries could result in the allocation not existing on the server
that is servicing the request.
 2016-12-01 11:13:36 -08:00
Alex Dadgar ec4d6936ff add debug panic 2016-11-29 15:57:40 -08:00
Diptanu Choudhury f67217297c Ensuring allocs are not added multiple times to blocking queue 2016-11-29 11:19:37 -08:00
Alex Dadgar 88c7e04348 Check for Ephemeral Disk being nil 2016-11-15 10:03:06 -08:00
Alex Dadgar ee921ccbb2 Merge pull request #1949 from carlpett/blacklist-fingerprints-and-drivers 
Support blacklisting fingerprinters
 2016-11-09 10:31:17 -08:00
Calle Pettersson 4304755c12 Address comments from PR 2016-11-09 11:50:16 +01:00
Calle Pettersson 8632696e2d Add blacklisting of drivers 2016-11-08 18:30:07 +01:00
Calle Pettersson b603bb007e Add blacklisting of fingerprinters 2016-11-08 18:29:44 +01:00
Alex Dadgar 9015e79aaa Add compatibility code for secret ID while upgrading cluster in both server/client mode on single nodes 2016-11-07 16:52:08 -08:00
Diptanu Choudhury 1a8fa8c8d5 Making Nomad TLS configs region aware 2016-11-01 11:55:29 -07:00
Diptanu Choudhury 4079545a92 Making the client use tls if the node from which migration has to be made has enabled tls 2016-10-31 10:20:04 -07:00
Michael Schurter cc115fe984 Swap log line classifiers to be consistent 2016-10-28 14:59:48 -07:00
Diptanu Choudhury 3182d0454f Adding the alloc if we can't find the TG 2016-10-27 15:45:10 -07:00
Diptanu Choudhury 0682a1a113 Not blocking for remote alloc if the alloc is not sticky 2016-10-27 12:04:55 -07:00
Alex Dadgar 150b678a6b Merge pull request #1806 from hashicorp/f-docker4mac-fixes 
A couple fixes to make Docker For Mac work
 2016-10-27 09:29:40 -07:00
Diptanu Choudhury 50ca5e1e9d Merge pull request #1853 from hashicorp/f-rpc-http-tls 
TLS support for http and RPC
 2016-10-25 16:14:43 -07:00
Diptanu Choudhury 7c61e115bd Moved tlsutil into helpers 2016-10-25 16:05:37 -07:00
Diptanu Choudhury 353e7fc7f1 Moving the certs into tlsutil package 2016-10-25 16:01:53 -07:00
Diptanu Choudhury cf35aeac84 Moving the TLSConfig to structs 2016-10-25 15:57:38 -07:00
Alex Dadgar 03eba049ed Merge pull request #1848 from hashicorp/f-vault-error 
Thread through whether DeriveToken error is recoverable or not
 2016-10-24 15:01:18 -07:00
Alex Dadgar 692a809919 Merge pull request #1842 from hashicorp/f-version-and-id 
Print the version and client node ID
 2016-10-24 10:13:33 -07:00
Diptanu Choudhury 2e3118e69c Implemented TLS support for http and rpc 2016-10-23 22:22:00 -07:00
Alex Dadgar ede3a814ba Small fixes 2016-10-22 18:20:50 -07:00
Alex Dadgar 0070178741 Thread through whether DeriveToken error is recoverable or not 2016-10-22 18:08:30 -07:00
Michael Schurter 285e80ac0f Remove disk usage enforcement 
Many thanks to @iverberk for the original PR (#1609), but we ended up
not wanting to ship this implementation with 0.5.

We'll come back to it after 0.5 and hopefully find a way to leverage
filesystem accounting and quotas, so we can skip the expensive polling.
 2016-10-21 13:55:51 -07:00
Alex Dadgar aa0d8d0d8d Print the version and client node ID 2016-10-20 17:46:04 -07:00
Evan Phoenix e7a98d5500 Make EvalSymlink errors more verbose 2016-10-12 17:07:21 -07:00
Evan Phoenix f8a65a3b9d Resolve alloc/state directories to make Docker For Mac happy 
* In -dev mode, `ioutil.TempDir` is used for the alloc and state
directories.
* `TempDir` uses `$TMPDIR`, which os OS X contains a per user
directory which is under `/var/folder`.
* `/var` is actually a symlink to `/private/var`
* Docker For Mac validates the directories that are passed to bind and on
OS X. That whitelist contains `/private`, but not `/var`. It does not
expand the path, and so any paths in `$TMPDIR` fail the whitelist check.

And thusly, by expanding the alloc/state directories the value passed
for binding does contain `/private` and Docker For Mac is happy.
 2016-10-12 17:06:25 -07:00
Michael Schurter 6dea6df919 Restore lost chan inits 2016-10-03 14:56:50 -07:00
Diptanu Choudhury d50c395421 Getting snapshot of allocation from remote node (#1741) 
* Added the alloc dir move

* Moving allocdirs when starting allocations

* Added the migrate flag to ephemeral disk

* Stopping migration if the allocation doesn't need migration any more

* Added the GetAllocDir method

* refactored code

* Added a test for alloc runner

* Incorporated review comments
 2016-10-03 09:59:57 -07:00
Michael Schurter b117725dc9 Only log consul errors once since last succesful run 2016-09-28 17:18:45 -07:00
Michael Schurter d486de3804 Remove unused const 2016-09-27 16:04:01 -07:00
Michael Schurter 2e696c5e61 Fix lies found in comments by fact checkers 2016-09-26 16:51:53 -07:00
Michael Schurter 11cf9686a6 No need to put reaper ticker on the struct 2016-09-26 16:15:19 -07:00
Michael Schurter 2eb0062959 Drop clumsy timeout on discovery notifications 
It's better to just let goroutines fallback to their longer retry
intervals then try to be clever here.
 2016-09-26 16:05:21 -07:00
Michael Schurter 307e674eca Flip disco chan; clarify method names/comments 2016-09-26 15:52:40 -07:00
Michael Schurter 888ee21270 Return csv of servers from Stats, not just count 2016-09-26 15:40:26 -07:00
Michael Schurter 7dc0079dd2 doDisco -> triggerDiscoveryCh; discovered -> serversDiscoveredCh 
Also fix log line formatting
 2016-09-26 15:21:28 -07:00
Michael Schurter 434e4be97c noServers -> noServersErr 2016-09-26 15:12:35 -07:00
Michael Schurter b2ddb85a78 consul -> Consul 2016-09-26 15:06:57 -07:00
Michael Schurter 37cfb2769c Replace periodic handlers with event driven disco 
Remove use of periodic consul handlers in the client and just use
goroutines. Consul Discovery is now triggered with a chan instead of
using a timer and deadline to trigger.

Once discovery is complete a chan is ticked so all goroutines waiting
for servers will run.

Should speed up bootstraping and recovery while decreasing spinning on
timers.
 2016-09-23 17:02:48 -07:00
Michael Schurter 2ab5264595 Retry all servers on RPC call failure 
rpcproxy is refactored into serverlist which prioritizes good servers
over servers in a remote DC or who have had a failure.

Registration, heartbeating, and alloc status updating will retry faster
when new servers are discovered.

Consul discovery will be retried more quickly when no servers are
available (eg on startup or an outage).
 2016-09-23 11:44:48 -07:00
Alex Dadgar 50efdb00e9 Merge pull request #1713 from hashicorp/f-alloc-runner-vault 
Vault integration in client
 2016-09-20 16:15:55 -07:00
Alex Dadgar 64de46432a Merge pull request #1677 from hashicorp/f-vault-implicit-constraint 
Vault implicit Task Group constraint + allow root tokens
 2016-09-20 16:15:32 -07:00
Alex Dadgar ec152a6d12 Clean up vault client 2016-09-14 18:10:56 -07:00
Alex Dadgar 6702a29071 Vault token threaded 2016-09-14 13:30:01 -07:00
Robert Neumayer 8dc19dbd10 Log adding of servers at INFO level 2016-09-14 22:24:17 +02:00
Alex Dadgar 2c8dd8bbd3 Revert "Introduce a Secret/ directory" 2016-09-01 17:23:15 -07:00
Alex Dadgar b0adaa5301 Allow root token 2016-09-01 12:05:08 -07:00
Alex Dadgar 1ed454dd60 Merge pull request #1671 from hashicorp/f-secret-dir2 
Introduce a Secret/ directory
 2016-09-01 09:56:17 -07:00
Alex Dadgar 9fa23e3536 Symlink on windows 2016-08-31 21:41:44 -07:00
Alex Dadgar 5d3b47e648 Address comments and reserve 2016-08-31 18:11:02 -07:00
vishalnayak 55a6f06e15 Addressed review feedback 2016-08-30 13:08:13 -04:00
vishalnayak 3808dd0ff8 Return only fatal error to renewal error channel 2016-08-30 12:46:59 -04:00
vishalnayak a0dbfe25b3 Fix tests 2016-08-29 21:30:06 -04:00
vishalnayak 82f6209e97 tokenDeriver function pointer to derive tokens. 
Remove rpc*, connPool, node and region from vaultclient.
 2016-08-29 20:32:05 -04:00
Alex Dadgar 14b7126511 Secret dir, hello world 2016-08-29 15:41:52 -07:00
vishalnayak 56e42cf03d Employ DeriveVaultToken API and flesh-up DeriveToken 2016-08-24 12:29:59 -04:00
vishalnayak 6002e596c4 VaultClient for Nomad Client 2016-08-24 09:43:45 -04:00
Diptanu Choudhury 1e1eef56a1 Putting the mock driver behind a build flag 2016-08-22 15:02:28 -05:00
Diptanu Choudhury 4ca623bcfe blocking chained allocations until previous allocation hasn't terminated 2016-08-22 11:34:24 -05:00
Alex Dadgar a90dafe9ab handle the upgrade case 2016-08-18 19:01:24 -07:00
Alex Dadgar 895c31f605 Nodes generate Secret ID and used for retrieving allocations and registering 2016-08-17 16:31:47 -07:00
Alex Dadgar 84820db86f If the client detects that a heartbeat has failed because it is not registered, reregister 2016-08-15 17:24:09 -07:00
Diptanu Choudhury 28b3f511e0 Fixed some error messages 2016-08-10 15:17:32 -07:00
Kenjiro Nakayama 6a810e6f1e Update after review 2016-08-09 08:57:26 +09:00
Kenjiro Nakayama 5c621b74e5 tiny: Return fmt.Errorf instead of duplicated error messages 2016-08-09 08:57:26 +09:00
Diptanu Choudhury 41b540fbc8 Allow operators to opt into publishing node and alloc metrics 2016-08-01 19:52:20 -07:00
Cameron Davison 777bdf4a1e
fix setup consul syncer error message 2016-07-28 22:14:52 -05:00
Alex Dadgar ebac5cb283 Node.Register handles the case of transistioning to ready and creating evals 2016-07-21 15:22:02 -07:00
Diptanu Choudhury 5b39a5db40 Fixed a debug message 2016-07-09 00:12:53 -07:00
Sean Chittenden 03c571c61b
Consolidate fingerprinters into a single map. 2016-07-08 23:37:14 -07:00
Sean Chittenden 8bdb38d016
Code golf 
Pointed out by: @dadgar
 2016-06-21 14:26:01 -07:00
Sean Chittenden df4fe2e502
Fix the shuffling of remote datacenters. 
Pointed out by: @ryanuber
 2016-06-21 13:37:22 -07:00
Sean Chittenden 9a60999100
Pass a logger arg to NewClient and NewServer 2016-06-16 23:29:23 -07:00
Sean Chittenden fd18eb7fdb
Only register the Client services reaper when consul.auto_advertise is enabled 2016-06-16 18:24:58 -07:00
Sean Chittenden 952b6ce7b5
Only auto-join clients if client_auto_join is true 2016-06-16 14:47:21 -07:00
Sean Chittenden af55b74114 Merge pull request #1276 from hashicorp/f-consul-server-autojoin 
Teach Nomad servers how to fall back to Consul.
 2016-06-16 14:40:45 -07:00
Sean Chittenden 008d75184b
Use the %+q verb in log messages (vs %q). 2016-06-16 11:03:51 -07:00
Alex Dadgar 7375d828e1 remove trace 2016-06-15 15:47:59 -07:00
Sean Chittenden 5e0ced2ae7
Shuffle all datacenters vs only the nearest N datacenters. 
Per discussion, we want to be aggressive about fanning out vs possibly
fixating on only local DCs.  With RPC forwarding in place, a random walk
may be less optimal from a network latency perspective, but it is guaranteed
to eventually result in a converged state because all DCs are candidates
during the bootstrapping process.
 2016-06-15 12:40:51 -07:00
Sean Chittenden 2123460cf0
Bump various Consul search limits 
Client: Search limit increased from 4 random DCs to 8 random DCs, plus nearest.
Server: Search factor increased from 3 to 5 times the bootstrap_expect.

This should allow for faster convergence in large environments (e.g.
sub-5min for 10K Consul DCs).
 2016-06-15 12:40:51 -07:00
Alex Dadgar cf99fc3173 Use Status.Peers instead of Status.Ping 2016-06-15 12:00:20 -07:00
Alex Dadgar 4b04e503f3 address comments 2016-06-13 17:32:18 -07:00
Alex Dadgar 8bbf4a55e5 Fix IDs and domain scoping 2016-06-13 16:30:58 -07:00
Diptanu Choudhury d019d8ef8e implemented reconciliation of unwanted services 2016-06-13 14:52:26 +02:00
Alex Dadgar a82c2bb058 Do not reconcile in client and cleanup executor a bit 2016-06-12 18:22:07 -07:00
Alex Dadgar 8e231fa382 Rename ConsulService back to Service 2016-06-12 16:36:49 -07:00
Alex Dadgar fdda90229f only support latest and remove ring buffer 2016-06-12 09:32:38 -07:00
Alex Dadgar e952540f6f Allocation resources returned in a struct 2016-06-11 21:04:10 -07:00
Sean Chittenden 2f036231e5 Merge pull request #1201 from hashicorp/f-dyn-server-list 
Dynamic Server Lists/Client Bootstrapping via consul.
 2016-06-11 18:58:25 -04:00
Sean Chittenden 92e2cfb0ad
Walk the DCs from nearest to most remote. 2016-06-11 18:52:21 -04:00
Sean Chittenden 2968545201
Walk the DCs from nearest to most remote, no limit on the search. 2016-06-11 18:23:06 -04:00
Sean Chittenden 917766a3df
Prefer %+q over %q in log messages. 2016-06-11 18:17:20 -04:00
Diptanu Choudhury fd60cfd585 Emitting client resource usage metrics as guages instead of k/v pairs 2016-06-11 22:17:32 +02:00
Sean Chittenden bbd8dfa798
goling(1) compliance pass (e.g. Rpc* -> RPC) 2016-06-10 23:38:28 -04:00
Sean Chittenden bc771d35df
Query for the Nomad service across multiple Consul datacenters. 2016-06-10 23:05:14 -04:00
Sean Chittenden 26b1e826d7
golint(1) police 2016-06-10 15:54:39 -04:00
Sean Chittenden f139d0c68b
Properly guard consulPullHeartbeatDeadline behind heartbeatLock 2016-06-10 15:54:39 -04:00
Sean Chittenden ed29946f5e
Populate the RPC Proxy's server list if heartbeat did not include a leader. 
It's possible that a Nomad Client is heartbeating with a Nomad server that
has become issolated from the quorum of Nomad Servers.  When 3x the
heartbeatTTL has been exceeded, append the Consul server list to the primary
primary server list.  When the next RPCProxy rebalance occurs, there is a
chance one of the servers discovered from Consul will be in the majority.
When client reattaches to a Nomad Server in the majority, it will include
a heartbeat and will reset the TTLs *AND* will clear the primary server list
to include only values from the heartbeat.
 2016-06-10 15:54:39 -04:00
Sean Chittenden 9a223936bb
Generate and sync Consul ServiceIDs consistently 2016-06-10 15:54:39 -04:00
Sean Chittenden 7956eb0c80
Rename structs.Task's Service attribute to ConsulService 2016-06-10 15:54:39 -04:00
Sean Chittenden 8c813630e6
Move package client/consul/sync to command/agent/consul. 
This has been done to allow the Server and Client to reuse the same
Syncer because the Agent may be running Client, Server, or both
simultaneously and we only want one Syncer object alive in the agent.
 2016-06-10 15:54:39 -04:00
Sean Chittenden fda03c5c9e
Change the signature of the PeriodicCallback to return an error 
I *KNEW* I should have done this when I wrote it, but didn't want to
go back and audit the handlers to include the appropriate return
handling, but now that the code is taking shape, make this change.
 2016-06-10 15:54:39 -04:00
Sean Chittenden 555f4fe135
Change client/consul.NewSyncer() to accept a shutdown channel 
In addition to the API changing, consul.Syncer can now be signaled
to shutdown via the Shutdown() method, which will call the Run()'ing
sync task to exit gracefully.
 2016-06-10 15:54:39 -04:00
Sean Chittenden 484816f5e0
Ensure that all accesses to Client.alloc are wrapped by allocLock. 2016-06-10 15:50:11 -04:00
Sean Chittenden 08cab4fdfa
Use client.getAllocRunners() where appropriate. 2016-06-10 15:50:11 -04:00
Sean Chittenden f9d0b9da32
Line wrap long line. 2016-06-10 15:50:11 -04:00
Sean Chittenden 0d201631a3
Rename rpcproxy.UpdateFromNodeUpdateResponse to RefreshServerLists 
While breaking the API within this PR, break out the individual
arguments to RefreshServerLists.  The servers parameter is reusing
`structs.NodeServerInfo` for the time being, but this can be revisited
if the needs of the strucutre diverge in the future.
 2016-06-10 15:50:11 -04:00
Sean Chittenden 0997fb1669
Fix up the comments 
Pointed out by: @dadgar
 2016-06-10 15:50:11 -04:00
Sean Chittenden aaa7d6bf40
Make the locking protocol more explicit in client.NewClient 
With an over abundance of caution, preevnt future copy/pasta by
using the right locks when bootstrapping a Client.  Strictly speaking
this is not necessary, but it makes explicit the locking semantics
and guards against future concurrent or parallel initialization.
 2016-06-10 15:50:11 -04:00
Sean Chittenden 525554c008
Use the client configCopy and lock appropriately. 2016-06-10 15:50:11 -04:00
Sean Chittenden 3060d6b33c
Flesh out the comment re: the client.rpcproxy.Run() task. 
Requested by: Alex
 2016-06-10 15:50:11 -04:00
Sean Chittenden b1ee131db8
Rename backupServerDeadline to consulPullHeartbeatDeadline 
Suggested by: @alex
 2016-06-10 15:50:11 -04:00
Sean Chittenden b9adfcecf5
Remove unused variable 2016-06-10 15:50:11 -04:00
Sean Chittenden f15eeb8f27
Clean up some docs and comments to be more accurate 2016-06-10 15:50:11 -04:00
Sean Chittenden c78b0a6567
Remove unused constants 2016-06-10 15:50:11 -04:00
Sean Chittenden 39fb0f2469
Change the endpoint for /v1/agent/servers and fix tests. 
When an agent is running a server, the list of servers includes the
Raft peers.  When the agent is running a client (which is always the
case?), include a list of the servers found in the Client's RpcProxy.
Dedupe and provide a unique list back to the caller.
 2016-06-10 15:50:11 -04:00
Sean Chittenden cb80e93a6b
Move client.DefaultConfig() to client/config.DefaultConfig() 
Resolves an import cycle in testing and is more appropriate because
the default should reside next to its struct definition.
 2016-06-10 15:50:11 -04:00
Sean Chittenden bff57a0dce
Reconcile, clean up, and centralize API version numbers (major and minor). 
Reduce future confusion by introducing a minor version that is gossiped out
via the `mvn` Serf tag (Minor Version Number, `vsn` is already being used for
to communicate `Major Version Number`).

Background: hashicorp/consul/issues/1346#issuecomment-151663152
 2016-06-10 15:50:11 -04:00
Sean Chittenden 36340c654d
Improve language re: fingerprinting 2016-06-10 15:50:11 -04:00
Sean Chittenden 438becb28b
Pass the datacenter name in the heartbeat 
Servers that are part of a different datacenter are added as backup
servers instead of primary servers.
 2016-06-10 15:50:11 -04:00
Sean Chittenden d914f262f9
Consolidate all consul sync periodic go routines to handlers. 
Only one pump and periodic loop now.
 2016-06-10 15:50:11 -04:00
Sean Chittenden 9fb0104def
Teach Client to reuse an Agent's consulSyncer. 
"There can be only one."
 2016-06-10 15:50:11 -04:00
Sean Chittenden 47891fb559
Register two services each for clients and servers, http and rpc. 
In order to give clients a fighting chance to talk to the right port,
differentiate RPC services from HTTP services by registering two
services with different tags.  This yields
`rpc.nomad-server.service.consul` and
`http.nomad-server.service.consul` which is immensely more useful to
clients attempting to bootstrap their world.
 2016-06-10 15:50:11 -04:00
Sean Chittenden 861f900225
s/RpcVersion/RPCVersion/g 2016-06-10 15:50:11 -04:00
Sean Chittenden 9f8d6c9f67
Move struct member to reduce diff context 2016-06-10 15:50:11 -04:00
Sean Chittenden 410d85cc78
Rename the package from client/rpc_proxy to client/rpcproxy 
Also rename `NewRpcProxy()` to just `New()` to avoid package stutter.
 2016-06-10 15:50:11 -04:00
Sean Chittenden ec7c78f533
Only poll Consul for servers when Nomad heartbeats begin to fail 
When a deadline timer of 2x Server's last requested TTL expires,
begin polling Consul for Nomad Servers.
 2016-06-10 15:50:11 -04:00
Sean Chittenden 17116fc5a7
Rebalance Nomad client RPCs among different Nomad servers. 
Implement client/rpc_proxy.RpcProxy.
 2016-06-10 15:50:11 -04:00
Sean Chittenden 88f3422d7c
Rename NewConsulService to NewSyncer 2016-06-10 15:49:37 -04:00
Sean Chittenden 768aab015d
Rename client/consul/sync.ConsulService to client/consul/sync.Syncer 
Syncer describes the responsibility and actions of the type.
 2016-06-10 15:49:37 -04:00
Sean Chittenden 73e173673e
Rename client/config/config's ConsulConfig to ConsulAgentConfig 
A follow up commit to the previous rename.  More to come.
 2016-06-10 15:48:36 -04:00
Sean Chittenden e36686a17d
Use consul/lib's RandomStagger 
Removes four redundant copies of the method in the process.
 2016-06-10 15:48:36 -04:00
Diptanu Choudhury 6bf38bb213 Fixed the svc id generation scheme while pruning services 2016-06-07 08:14:11 -07:00
Alex Dadgar ba1a92eb8c Handle errors during stats collection 2016-06-03 14:23:18 -07:00
Diptanu Choudhury 35e31c1b81 Enqueing metrics only if they are not nil 2016-06-02 17:14:15 -04:00
Diptanu Choudhury 7efde782fa Sending metrics for tasks as well 2016-06-01 16:42:16 +02:00
Diptanu Choudhury 7f172f314f Pushing host stats 2016-05-31 04:05:47 +02:00
Diptanu Choudhury c0dc6cfbf2 Changing the api of the stats endpoints 2016-05-28 19:59:20 -07:00
Diptanu Choudhury a0c279f3b2 comments 2016-05-28 19:59:20 -07:00
Diptanu Choudhury 4c85f02072 Stopping the metrics collector timers using defer and starting to collect host stats right away 2016-05-28 19:59:20 -07:00
Diptanu Choudhury b2e8495971 Fixing the alloc runner tests 2016-05-28 19:59:20 -07:00
Diptanu Choudhury f93820f40c Added comments 2016-05-28 19:59:20 -07:00
Diptanu Choudhury c2da19bf11 Refactored the api for NewHostStatsCollector 2016-05-28 19:59:20 -07:00
Diptanu Choudhury c46400597e Making the stats collection interval and number of data points to keep in memory configurable 2016-05-28 19:59:20 -07:00
Diptanu Choudhury b6e5227e7a Renamed monitorUsage method 2016-05-28 19:59:20 -07:00
Diptanu Choudhury 666b419dba Acquiring locks before iterating allocations and tasks 2016-05-28 19:59:20 -07:00
Diptanu Choudhury 73fa700a88 Showing host resource usage stats 2016-05-28 19:59:20 -07:00
Diptanu Choudhury 9a96dddc07 Added some docs to resource stats endpoint 2016-05-28 19:42:34 -07:00
Diptanu Choudhury b9feae89ce Making the conversion to Stats simpler 2016-05-28 19:42:34 -07:00
Diptanu Choudhury 7569b1af2e Collecting host stats 2016-05-28 19:42:34 -07:00
Diptanu Choudhury f3d0aecafe Reporting time series of stats 2016-05-28 19:42:34 -07:00
Diptanu Choudhury 0fb0e0237f Added a client API to display resource usage of an allocation 2016-05-28 19:42:34 -07:00
Diptanu Choudhury 2a99a2cfb6 Removing addition of the client service while reconciling services 2016-05-13 10:34:21 -07:00
Diptanu Choudhury 439d7bf326 Fixed an agent test 2016-05-11 17:26:53 -07:00
Diptanu Choudhury 347cb890d2 Removed allocID and task name from consul service 2016-05-11 16:26:41 -07:00
Diptanu Choudhury 7287376eca Using consul config from client config instead of reading from client options 2016-05-11 16:10:57 -07:00
Diptanu Choudhury 83fed62a0a Implemented registering client and server services 2016-05-11 16:07:02 -07:00
Diptanu Choudhury 2f8a3532ad Refactored the signature of NewConsulService 2016-05-11 15:22:58 -07:00
Sean Chittenden 53d4681b61
Emit various debugging information with the results of the fingerprinter 2016-05-09 12:21:51 -07:00
Diptanu Choudhury 2941b26244 Reading consul attr from copy of node attributes 2016-04-11 20:13:28 -04:00
Alex Dadgar f3d9ecf354 When reserving ports don't reserve network interface speed 2016-04-07 15:47:02 -07:00
Diptanu Choudhury 57b0bbcb8b Watching for node updates after registration completes 2016-04-01 13:41:52 -07:00
Diptanu Choudhury c6e80582a6 Making the drivers fingerprint periodically if they are configured to do so 2016-03-31 15:15:00 -07:00
Diptanu Choudhury e677c43667 Client not syncing services with consul until fingerprinting succeeds 2016-03-30 21:51:50 -07:00
Diptanu Choudhury b886636f6f Using tickers instead of creating new timers 2016-03-25 14:18:04 -07:00
Diptanu Choudhury 91db8f44f1 Changing the logic of keep services 2016-03-24 19:19:13 -07:00
Diptanu Choudhury 2a9e522ed4 Added an impl for Nomad Checks 2016-03-24 19:00:24 -07:00
Diptanu Choudhury 6a62d4f452 Fixing check registration in perform sync 2016-03-24 14:12:09 -07:00
Diptanu Choudhury bf554992a4 Using a helper method to copy taskStates 2016-03-23 19:11:54 -07:00
Diptanu Choudhury 12ac0b4a33 Reworded the log line 2016-03-23 19:04:59 -07:00
Diptanu Choudhury e98f5e4ee3 Locking the task states 2016-03-23 19:02:29 -07:00
Diptanu Choudhury 31baa6ce4b Renamed vars and methods 2016-03-23 18:21:27 -07:00
Diptanu Choudhury 092f23a646 Locking on alloc runners before syncing with consul 2016-03-23 17:54:32 -07:00
Diptanu Choudhury 62242595fc Using the name of the task and the alloc id in the service name 2016-03-23 17:35:29 -07:00
Diptanu Choudhury ab35c187b3 Added comments 2016-03-23 15:39:25 -07:00
Diptanu Choudhury 7dab719a66 Client sync with consul and removed unwanted services 2016-03-23 15:28:55 -07:00
Diptanu Choudhury f6a932194f Removing references to old consul services and adding consul config to executor context 2016-03-23 12:19:19 -07:00
Alex Dadgar 719f5d34ed Merge pull request #910 from hashicorp/f-reserved-resources 
Reserve Client Resources + Config Validation
 2016-03-15 21:09:13 -07:00
Dmitry Smirnov 7c3bb51cfa codespell: minor spelling corrections 
Signed-off-by: Dmitry Smirnov <onlyjob@member.fsf.org>
 2016-03-16 05:28:31 +11:00
Alex Dadgar 7d4c19ed99 reserve resources on the node 2016-03-13 19:05:41 -07:00
Alex Dadgar 75d5aad888 client: fix bug where pushing allocs is skipped 2016-03-10 16:18:20 -08:00
Alex Dadgar 22f4fbd652 up cached connection time 2016-03-09 10:37:56 -08:00
Alex Dadgar cd889df20a client: send correct node id 2016-02-22 22:43:55 -08:00