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Akihiro Suda 28797019b3 [EXPERIMENTAL] Integration Test on Swarm 
This commit adds contrib/integration-cli-on-swarm/integration-cli-on-swarm.sh,
which enables IT to be running in parallel, using Swarm-mode and Funker.

Please refer to contrib/integration-cli-on-swarm/README.md

The test takes almost 5 to 6 minutes, with 10 n1-standard-4 GCE instances.

  $ ./contrib/integration-cli-on-swarm/integration-cli-on-swarm.sh --push-worker-image example.gcr.io/foo/bar --replicas 30 --shuffle
  2016/12/29 08:32:15 Loaded 1618 tests (30 chunks)
  2016/12/29 08:32:15 Executing 30 chunks in parallel, against "integration-cli-worker"
  2016/12/29 08:32:15 Executing chunk 0 (contains 54 test filters)
  ..
  2016/12/29 08:34:34 Finished chunk 28 [1/30] with 54 test filters in 2m19.098068003s, code=0.
  2016/12/29 08:34:38 Finished chunk 12 [2/30] with 54 test filters in 2m23.088569511s, code=0.
  2016/12/29 08:34:48 Finished chunk 10 [3/30] with 54 test filters in 2m33.880679079s, code=0.
  2016/12/29 08:34:54 Finished chunk 20 [4/30] with 54 test filters in 2m39.973747028s, code=0.
  2016/12/29 08:35:11 Finished chunk 18 [5/30] with 54 test filters in 2m56.28384361s, code=0.
  2016/12/29 08:35:11 Finished chunk 29 [6/30] with 52 test filters in 2m56.54047088s, code=0.
  2016/12/29 08:35:15 Finished chunk 1 [7/30] with 54 test filters in 3m0.285044426s, code=0.
  2016/12/29 08:35:22 Finished chunk 6 [8/30] with 54 test filters in 3m7.211775338s, code=0.
  2016/12/29 08:35:24 Finished chunk 25 [9/30] with 54 test filters in 3m9.938413009s, code=0.
  2016/12/29 08:35:30 Finished chunk 27 [10/30] with 54 test filters in 3m15.219834368s, code=0.
  2016/12/29 08:35:36 Finished chunk 9 [11/30] with 54 test filters in 3m21.615434162s, code=0.
  2016/12/29 08:35:41 Finished chunk 13 [12/30] with 54 test filters in 3m26.576907401s, code=0.
  2016/12/29 08:35:45 Finished chunk 17 [13/30] with 54 test filters in 3m30.290752537s, code=0.
  2016/12/29 08:35:53 Finished chunk 2 [14/30] with 54 test filters in 3m38.148423321s, code=0.
  2016/12/29 08:35:55 Finished chunk 24 [15/30] with 54 test filters in 3m40.09669137s, code=0.
  2016/12/29 08:35:57 Finished chunk 8 [16/30] with 54 test filters in 3m42.299945108s, code=0.
  2016/12/29 08:35:57 Finished chunk 22 [17/30] with 54 test filters in 3m42.946558809s, code=0.
  2016/12/29 08:35:59 Finished chunk 23 [18/30] with 54 test filters in 3m44.232557165s, code=0.
  2016/12/29 08:36:02 Finished chunk 3 [19/30] with 54 test filters in 3m47.112051358s, code=0.
  2016/12/29 08:36:11 Finished chunk 15 [20/30] with 54 test filters in 3m56.340656645s, code=0.
  2016/12/29 08:36:11 Finished chunk 11 [21/30] with 54 test filters in 3m56.882401231s, code=0.
  2016/12/29 08:36:22 Finished chunk 19 [22/30] with 54 test filters in 4m7.551093516s, code=0.
  2016/12/29 08:36:23 Finished chunk 21 [23/30] with 54 test filters in 4m8.221093446s, code=0.
  2016/12/29 08:36:25 Finished chunk 16 [24/30] with 54 test filters in 4m10.450451705s, code=0.
  2016/12/29 08:36:27 Finished chunk 5 [25/30] with 54 test filters in 4m12.162272692s, code=0.
  2016/12/29 08:36:28 Finished chunk 14 [26/30] with 54 test filters in 4m13.977801031s, code=0.
  2016/12/29 08:36:29 Finished chunk 0 [27/30] with 54 test filters in 4m14.34086812s, code=0.
  2016/12/29 08:36:49 Finished chunk 26 [28/30] with 54 test filters in 4m34.437085539s, code=0.
  2016/12/29 08:37:14 Finished chunk 7 [29/30] with 54 test filters in 4m59.22902721s, code=0.
  2016/12/29 08:37:20 Finished chunk 4 [30/30] with 54 test filters in 5m5.103469214s, code=0.
  2016/12/29 08:37:20 Executed 30 chunks in 5m5.104379119s. PASS: 30, FAIL: 0.

Signed-off-by: Akihiro Suda <suda.akihiro@lab.ntt.co.jp>
2017-02-28 02:10:09 +00:00
..
agent [EXPERIMENTAL] Integration Test on Swarm 2017-02-28 02:10:09 +00:00
host [EXPERIMENTAL] Integration Test on Swarm 2017-02-28 02:10:09 +00:00
README.md [EXPERIMENTAL] Integration Test on Swarm 2017-02-28 02:10:09 +00:00

README.md

Integration Testing on Swarm

IT on Swarm allows you to execute integration test in parallel across a Docker Swarm cluster

Architecture

Master service

  • Works as a funker caller
  • Calls a worker funker (-worker-service) with a chunk of -check.f filter strings (passed as a file via -input flag, typically /mnt/input)

Worker service

  • Works as a funker callee
  • Executes an equivalent of TESTFLAGS=-check.f TestFoo|TestBar|TestBaz ... make test-integration-cli using the bind-mounted API socket (docker.sock)

Client

  • Controls master and workers via docker stack
  • No need to have a local daemon

Typically, the master and workers are supposed to be running on a cloud environment, while the client is supposed to be running on a laptop, e.g. Docker for Mac/Windows.

Requirement

  • Docker daemon 1.13 or later
  • Private registry for distributed execution with multiple nodes

Usage

Step 1: Prepare images

$ make build-integration-cli-on-swarm

Following environment variables are known to work in this step:

  • BUILDFLAGS
  • DOCKER_INCREMENTAL_BINARY

Step 2: Execute tests

$ ./hack/integration-cli-on-swarm/integration-cli-on-swarm -replicas 40 -push-worker-image YOUR_REGISTRY.EXAMPLE.COM/integration-cli-worker:latest

Following environment variables are known to work in this step:

  • DOCKER_GRAPHDRIVER
  • DOCKER_EXPERIMENTAL

Flags

Basic flags:

  • -replicas N: the number of worker service replicas. i.e. degree of parallelism.
  • -chunks N: the number of chunks. By default, chunks == replicas.
  • -push-worker-image REGISTRY/IMAGE:TAG: push the worker image to the registry. Note that if you have only single node and hence you do not need a private registry, you do not need to specify -push-worker-image.

Experimental flags for mitigating makespan nonuniformity:

  • -shuffle: Shuffle the test filter strings

Flags for debugging IT on Swarm itself:

  • -rand-seed N: the random seed. This flag is useful for deterministic replaying. By default(0), the timestamp is used.
  • -filters-file FILE: the file contains -check.f strings. By default, the file is automatically generated.
  • -dry-run: skip the actual workload