[Bug]: Could not connect to Ryuk when running Testcontainers in Docker Desktop on Mac OS #7036

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1. jxblum

   added

   type/bug

   on May 12, 2023
2. jxblum commented on May 12, 2023

   

   jxblum

   on May 12, 2023

   Author

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   Copy from comment in Issue #4395.

   /var/run/docker.sock.raw is not even a file on macOS 13.3.1 with Docker Desktop 4.19.0 (106363) using Testcontainers 1.18.1:

   $ ls -la /var/run/docker.sock.raw
   ls: /var/run/docker.sock.raw: No such file or directory
   

   I still see:

   Caused by: java.lang.IllegalStateException: Could not connect to Ryuk at 172.17.0.1:59391
   	at org.testcontainers.utility.RyukResourceReaper.maybeStart(RyukResourceReaper.java:132)
   	at org.testcontainers.utility.RyukResourceReaper.init(RyukResourceReaper.java:42)
   	at org.testcontainers.DockerClientFactory.client(DockerClientFactory.java:224)
   	at org.testcontainers.DockerClientFactory$1.getDockerClient(DockerClientFactory.java:104)
   	at com.github.dockerjava.api.DockerClientDelegate.authConfig(DockerClientDelegate.java:109)
   	at org.testcontainers.containers.GenericContainer.start(GenericContainer.java:321)
   	at example.app.crm.config.TestcontainersCassandraConfiguration.cassandraContainer(TestcontainersCassandraConfiguration.java:71)
   ...
   ..
   .
   

   I am attempting to run tests using Testcontainers to bootstrap a Apache Cassandra 3.11.15 container with:

   $ docker run -it --mount type=bind,source="$(pwd)",target=/source-from-github -v /var/run/docker.sock:/var/run/docker.sock -v /usr/local/bin/docker:/usr/local/bin/docker eclipse-temurin:17.0.6_10-jdk-focal /bin/bash
   

   Essentially, bootstrapping the Cassandra container with:

   	private static final DockerImageName CASSANDRA_DOCKER_IMAGE_NAME = DockerImageName.parse("cassandra:3.11.15");
   
   	private static final String LOCAL_DATACENTER_NAME = "datacenter1";
   
   	private static final int CASSANDRA_DEFAULT_PORT = 9042;
   
   	@Bean("CassandraContainer")
   	GenericContainer<?> cassandraContainer(Environment environment) {
   
   		GenericContainer<?> cassandraContainer = newEnvironmentOptimizedCassandraContainer();
   
   71:		cassandraContainer.start();
   
   		return withCassandraServer(cassandraContainer, environment);
   	}
   
   	private @NonNull GenericContainer<?> newCassandraContainer() {
   
   		return new CassandraContainer<>(CASSANDRA_DOCKER_IMAGE_NAME)
   			.withInitScript(CASSANDRA_SCHEMA_CQL)
   			//.withInitScript(CASSANDRA_INIT_CQL)
   			.withExposedPorts(CASSANDRA_DEFAULT_PORT)
   			.withReuse(true);
   	}
   
   	private @NonNull GenericContainer<?> newEnvironmentOptimizedCassandraContainer() {
   
   		return newCassandraContainer()
   			.withEnv("CASSANDRA_SNITCH", "SimpleSnitch")
   			.withEnv("HEAP_NEWSIZE", "128M")
   			.withEnv("MAX_HEAP_SIZE", "1024M")
   			.withEnv("JVM_OPTS", "-Dcassandra.skip_wait_for_gossip_to_settle=0 -Dcassandra.initial_token=0");
   	}
   
   	private @NonNull CqlSession newCqlSession(@NonNull GenericContainer<?> cassandraContainer) {
   
   		return CqlSession.builder()
   			.addContactPoint(resolveContactPoint(cassandraContainer))
   			.withLocalDatacenter(LOCAL_DATACENTER_NAME)
   			.build();
   	}
   
   	private @NonNull InetSocketAddress resolveContactPoint(@NonNull GenericContainer<?> cassandraContainer) {
   		return new InetSocketAddress(cassandraContainer.getHost(),
   			cassandraContainer.getMappedPort(CASSANDRA_DEFAULT_PORT));
   	}
3. jxblum

   changed the title [-][Bug]: Could not connect to Ryuk when running Testcontainers in Docker Desktop[/-] [+]Could not connect to Ryuk when running Testcontainers in Docker Desktop on Mac OS[/+] on May 13, 2023
4. jxblum

   changed the title [-]Could not connect to Ryuk when running Testcontainers in Docker Desktop on Mac OS[/-] [+][Bug]: Could not connect to Ryuk when running Testcontainers in Docker Desktop on Mac OS[/+] on May 13, 2023
5. grv95 commented on May 16, 2023

   

   grv95

   on May 16, 2023

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   +1
   Facing the same issue on Mac m1 arm64 machine.

   👍React with 👍1Reacted by Esdras
6. eddumelendez commented on May 16, 2023

   

   eddumelendez

   on May 16, 2023

   Member

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   Hi, IIRC latest version of Docker Desktop doesn't provide /var/run/docker.sock by default. In order to enable it should go to Settings > Advanced and make sure Enable default Docker socket (Requires password) is checked.

   Rootless is still not supported for Docker Desktop for Mac and Linux.

   Hope this help.
7. ph4r5h4d commented on May 16, 2023

   

   ph4r5h4d

   on May 16, 2023

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   I have the same issue; I have an M1 mac with the Docker for desktop and the Docker socket is enabled and accessible in /var/run/docker.sock but I can't use test container 1.18.1 as it fails with the following error:

   Could not find a valid Docker environment. Please check configuration.
   

   The same thing works with 1.17.6

   👍React with 👍2Reacted by Luca Todeschini and Erwin Cavas
8. eddumelendez commented on May 16, 2023

   

   eddumelendez

   on May 16, 2023

   Member

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   @ph4r5h4d can you share your logs? Also, this is a different issue I think. In the meantime, can we go move to discussion, please?

   👍React with 👍1Reacted by Farshad Nematdoust
9. grv95 commented on May 16, 2023

   

   grv95

   on May 16, 2023

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   @eddumelendez
   I already have the default docker socket enabled.
   It is available for me as /var/run/docker.sock instead of /var/run/docker.sock.raw

   still can't connect to Ryuk
   Other containers are working fine.
10. eddumelendez commented on May 30, 2023

    

    eddumelendez

    on May 30, 2023

    Member

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    Hi, IIRC latest version of Docker Desktop doesn't provide /var/run/docker.sock by default. In order to enable it should go to Settings > Advanced and make sure Enable default Docker socket (Requires password) is checked.

    Rootless is still not supported for Docker Desktop for Mac and Linux.

    Hope this help.

    Testcontainers for Java 1.18.2 will auto-detect ~/.docker/run/docker.sock. So, no more workarounds are needed.
11. eddumelendez

    closed this as completedon May 30, 2023
12. dreamawakening commented on Jun 19, 2024

    

    dreamawakening

    on Jun 19, 2024

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    Has anyone figured out how to fix this error? I'm getting it on my M3 Pro device. When I set this env var, the exact same test succeeds:

    os.Setenv("TESTCONTAINERS_RYUK_DISABLED", "true")
13. upeter commented on Aug 14, 2024

    

    upeter

    on Aug 14, 2024

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    The only way I could get it solved on my M2 Pro is via -e TESTCONTAINERS_HOST_OVERRIDE=host.docker.internal. Then it worked flawlessly.

    👍React with 👍8Reacted by Jun, Sungwoo Park, Matias Iglesias, Sunny, ChristopherWirt, Ronald Dehuysser, Roman Tabulov and Aleksei Bibus

    🎉React with 🎉2Reacted by Ronald Dehuysser and Roman Tabulov
14. rdehuyss commented on May 11, 2025

    

    rdehuyss

    on May 11, 2025

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    @upeter - thank you so much, this is a lifesaver. TESTCONTAINERS_HOST_OVERRIDE=host.docker.internal made it work also for me.
15. cobr123

    added a commit that references this issue on Sep 24, 2025

    TESTCONTAINERS_HOST_OVERRIDE=host.docker.internal для исправления зап…

    ...

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