ElasticsearchContainer - Multiple instances created when discovery.type=single-node

[kpei]

I am trying to create an elasticsearchcontainer for my CI process but find that the start up time is too long since there are 3-4 instances being launched. I am using scala 2.12 with testcontainers version 1.15

My code:

  val container: ElasticsearchContainer =
    new ElasticsearchContainer("docker.elastic.co/elasticsearch/elasticsearch:7.10.0")
      .withExposedPorts(9300, 9200)
      .withEnv("discovery.type", "single-node")
  container.start()

Result logs:

                     2020-11-23 09:29:44,408 [main] INFO  o.t.utility.RegistryAuthLocator -  Failure when attempting to lookup auth config. Please ignore if you don't have images in an authenticated registry. Details: (dockerImageName: testcontainers/ryuk:0.3.0, configFile: /home/doug/.docker/config.json. Falling back to docker-java default behaviour. Exception message: /home/doug/.docker/config.json (No such file or directory)
                     2020-11-23 09:29:47,803 [main] INFO  o.testcontainers.DockerClientFactory -  Ryuk started - will monitor and terminate Testcontainers containers on JVM exit
                     2020-11-23 09:29:47,806 [main] INFO  o.testcontainers.DockerClientFactory -  Checking the system...
                     2020-11-23 09:29:47,806 [main] INFO  o.testcontainers.DockerClientFactory -  ✔︎ Docker server version should be at least 1.6.0
                     2020-11-23 09:29:48,164 [main] INFO  o.testcontainers.DockerClientFactory -  ✔︎ Docker environment should have more than 2GB free disk space
                     2020-11-23 09:29:48,184 [main] INFO  ?.e.c.10.0] -  Starting an elasticsearch container using [docker.elastic.co/elasticsearch/elasticsearch:7.10.0]
                     2020-11-23 09:29:48,208 [main] INFO  ?.e.c.10.0] -  Creating container for image: docker.elastic.co/elasticsearch/elasticsearch:7.10.0
                     2020-11-23 09:29:48,209 [main] INFO  o.t.utility.RegistryAuthLocator -  Failure when attempting to lookup auth config. Please ignore if you don't have images in an authenticated registry. Details: (dockerImageName: docker.elastic.co/elasticsearch/elasticsearch:7.10.0, configFile: /home/doug/.docker/config.json. Falling back to docker-java default behaviour. Exception message: /home/doug/.docker/config.json (No such file or directory)
                     2020-11-23 09:29:48,489 [main] INFO  ?.e.c.10.0] -  Starting container with ID: 8d74e2b0fccb10114301bdaaefec2203804abbc537f059fbea810a4d6ed82e15
                     2020-11-23 09:29:49,378 [main] INFO  ?.e.c.10.0] -  Container docker.elastic.co/elasticsearch/elasticsearch:7.10.0 is starting: 8d74e2b0fccb10114301bdaaefec2203804abbc537f059fbea810a4d6ed82e15
                     2020-11-23 09:29:49,405 [main] INFO  o.t.c.wait.strategy.HttpWaitStrategy -  /loving_wozniak: Waiting for 300 seconds for URL: http://localhost:32799/
                     2020-11-23 09:30:19,193 [main] INFO  ?.e.c.10.0] -  Container docker.elastic.co/elasticsearch/elasticsearch:7.10.0 started in PT30.982S
                     2020-11-23 09:30:19,498 [main] INFO  ?.e.c.10.0] -  Starting an elasticsearch container using [docker.elastic.co/elasticsearch/elasticsearch:7.10.0]
                     2020-11-23 09:30:19,498 [main] INFO  ?.e.c.10.0] -  Creating container for image: docker.elastic.co/elasticsearch/elasticsearch:7.10.0
                     2020-11-23 09:30:20,472 [main] INFO  ?.e.c.10.0] -  Starting container with ID: a8cf1585aa55f5692afaee95c5643f206161913ce3269b6130fb16db89fc56e3
                     2020-11-23 09:30:21,708 [main] INFO  ?.e.c.10.0] -  Container docker.elastic.co/elasticsearch/elasticsearch:7.10.0 is starting: a8cf1585aa55f5692afaee95c5643f206161913ce3269b6130fb16db89fc56e3
                     2020-11-23 09:30:21,721 [main] INFO  o.t.c.wait.strategy.HttpWaitStrategy -  /dazzling_lichterman: Waiting for 300 seconds for URL: http://localhost:32801/
                     2020-11-23 09:30:47,293 [main] INFO  ?.e.c.10.0] -  Container docker.elastic.co/elasticsearch/elasticsearch:7.10.0 started in PT27.795S
                     2020-11-23 09:30:47,295 [main] INFO  ?.e.c.10.0] -  Starting an elasticsearch container using [docker.elastic.co/elasticsearch/elasticsearch:7.10.0]
                     2020-11-23 09:30:47,296 [main] INFO  ?.e.c.10.0] -  Creating container for image: docker.elastic.co/elasticsearch/elasticsearch:7.10.0
                     2020-11-23 09:30:47,701 [main] INFO  ?.e.c.10.0] -  Starting container with ID: 248ec0908480e7b52b9dfb3f23cc728829ac8592db9ad46439c21fca05466714
                     2020-11-23 09:30:48,680 [main] INFO  ?.e.c.10.0] -  Container docker.elastic.co/elasticsearch/elasticsearch:7.10.0 is starting: 248ec0908480e7b52b9dfb3f23cc728829ac8592db9ad46439c21fca05466714
                     2020-11-23 09:30:48,689 [main] INFO  o.t.c.wait.strategy.HttpWaitStrategy -  /jovial_cartwright: Waiting for 300 seconds for URL: http://localhost:32803/
                     2020-11-23 09:31:11,353 [main] INFO  ?.e.c.10.0] -  Container docker.elastic.co/elasticsearch/elasticsearch:7.10.0 started in PT24.058S
                     2020-11-23 09:31:11,356 [main] INFO  ?.e.c.10.0] -  Starting an elasticsearch container using [docker.elastic.co/elasticsearch/elasticsearch:7.10.0]
                     2020-11-23 09:31:11,356 [main] INFO  ?.e.c.10.0] -  Creating container for image: docker.elastic.co/elasticsearch/elasticsearch:7.10.0
                     2020-11-23 09:31:11,666 [main] INFO  ?.e.c.10.0] -  Starting container with ID: 5340ea3df2e6cb4d16953e92852abbdd7c64fa104599ff3608df0df5cf875b23
                     2020-11-23 09:31:12,747 [main] INFO  ?.e.c.10.0] -  Container docker.elastic.co/elasticsearch/elasticsearch:7.10.0 is starting: 5340ea3df2e6cb4d16953e92852abbdd7c64fa104599ff3608df0df5cf875b23
                     2020-11-23 09:31:12,765 [main] INFO  o.t.c.wait.strategy.HttpWaitStrategy -  /sad_poitras: Waiting for 300 seconds for URL: http://localhost:32805/
                     2020-11-23 09:31:37,367 [main] INFO  ?.e.c.10.0] -  Container docker.elastic.co/elasticsearch/elasticsearch:7.10.0 started in PT26.011S

Is there any way to only create one container for elasticsearch or is this expected behavior?

[bsideup]

From the logs it is clear that you're starting the container multiple times. I just tried the following test and it started the container only once (as expected):

testcontainers-java/modules/elasticsearch/src/test/java/org/testcontainers/elasticsearch/ElasticsearchContainerTest.java

Lines 86 to 92 in 1e597cc

	try (ElasticsearchContainer container = new ElasticsearchContainer(ELASTICSEARCH_IMAGE)) {
	container.start();
	Response response = getClient(container).performRequest(new Request("GET", "/"));
	assertThat(response.getStatusLine().getStatusCode(), is(200));
	String responseAsString = EntityUtils.toString(response.getEntity());
	assertThat(responseAsString, containsString(ELASTICSEARCH_VERSION));
	}

Refer to your test engine's docs on how to reuse resources between the tests or use the singleton container approach.

[kpei]

@bsideup thank you for your help. That was indeed the issue :)