Fixing the error: com amazonaws sdkclientexception failed to connect to service endpoint

Question

I get the error: com amazonaws sdkclientexception failed to connect to service endpoint when I try to run the program below:

public AmazonSQSAsync sqsClient() {
  EndpointConfiguration endpointConfig = new AwsClientBuilder.EndpointConfiguration(
  "sqs.us-east-1.amazonaws.com",
  "us-east-1"
  );
 
  return AmazonSQSAsyncClientBuilder
  .standard()
  .withEndpointConfiguration(endpointConfig)
  .withCredentials(new AWSStaticCredentialsProvider(new DefaultAWSCredentialsProviderChain().getCredentials()))
  .build();
 }

<dependency>
  <groupId>org.springframework.cloud</groupId>
  <artifactId>spring-cloud-starter-aws</artifactId>
  <version>2.2.1.RELEASE</version>
  </dependency>
 
  <dependency>
  <groupId>org.springframework.cloud</groupId>
  <artifactId>spring-cloud-starter-aws-messaging</artifactId>
  <version>2.2.1.RELEASE</version>
  </dependency>

The error appears the system notifies as follows:

2019-12-29 16:38:27.420  WARN 22462 --- [  restartedMain] com.amazonaws.util.EC2MetadataUtils      : Unable to retrieve the requested metadata (/latest/meta-data/instance-id). Failed to connect to service endpoint: 

com.amazonaws.SdkClientException: Failed to connect to service endpoint: 
    at com.amazonaws.internal.EC2ResourceFetcher.doReadResource(EC2ResourceFetcher.java:100) ~[aws-java-sdk-core-1.11.699.jar:na]
    at com.amazonaws.internal.EC2ResourceFetcher.doReadResource(EC2ResourceFetcher.java:70) ~[aws-java-sdk-core-1.11.699.jar:na]
    at com.amazonaws.internal.InstanceMetadataServiceResourceFetcher.readResource(InstanceMetadataServiceResourceFetcher.java:75) ~[aws-java-sdk-core-1.11.699.jar:na]
    at com.amazonaws.internal.EC2ResourceFetcher.readResource(EC2ResourceFetcher.java:62) ~[aws-java-sdk-core-1.11.699.jar:na]
    at com.amazonaws.util.EC2MetadataUtils.getItems(EC2MetadataUtils.java:400) ~[aws-java-sdk-core-1.11.699.jar:na]
    at com.amazonaws.util.EC2MetadataUtils.getData(EC2MetadataUtils.java:369) ~[aws-java-sdk-core-1.11.699.jar:na]
    at org.springframework.cloud.aws.context.support.env.AwsCloudEnvironmentCheckUtils.isRunningOnCloudEnvironment(AwsCloudEnvironmentCheckUtils.java:38) ~[spring-cloud-aws-context-2.2.1.RELEASE.jar:2.2.1.RELEASE]
    at org.springframework.cloud.aws.context.annotation.OnAwsCloudEnvironmentCondition.matches(OnAwsCloudEnvironmentCondition.java:37) ~[spring-cloud-aws-context-2.2.1.RELEASE.jar:2.2.1.RELEASE]
    at org.springframework.context.annotation.ConditionEvaluator.shouldSkip(ConditionEvaluator.java:108) ~[spring-context-5.2.2.RELEASE.jar:5.2.2.RELEASE]
    at org.springframework.context.annotation.ConfigurationClassParser.processConfigurationClass(ConfigurationClassParser.java:221) ~[spring-context-5.2.2.RELEASE.jar:5.2.2.RELEASE]
    at org.springframework.context.annotation.ConfigurationClassParser.processImports(ConfigurationClassParser.java:587) ~[spring-context-5.2.2.RELEASE.jar:5.2.2.RELEASE]
...

I tried to solve it with another sample. I got the reference in the community forum, but it still returned an invalid result. If someone knows the solution, please give me the support. Thanks!

lyytutoria · Accepted Answer

The cause: Configuration will prevent EC2Metadata working in the case you use the AWS Java SDK outside of an EC2, it will raise a message: "EC2 Instance Metadata Service stops working". The endpoint cannot be resolved because you are still executing the program locally. Therefore, the error comes out. Solution: You can solve this error by setting the below structure for aws configuration:

cloud.aws.region.use-default-aws-region-chain=true
cloud.aws.stack.auto=false
cloud.aws.credentials.access-key=
cloud.aws.credentials.secret-key=
cloud.aws.region.auto=false
cloud.aws.region.static=
cloud.aws.stack=false

logging.level.com.amazonaws.util.EC2MetadataUtils=error
logging.level.com.amazonaws.internal.InstanceMetadataServiceResourceFetcher=error

Tiago Leray · Answer

Below are the errors I experienced when I ran Spring Boot Project for AWS NS

i.InstanceMetadataServiceResourceFetcher : Fail to retrieve token
com.amazonaws.util.EC2MetadataUtils : Unable to retrieve the requested metadata (/latest/dynamic/instance-identity/document). Failed to connect to service endpoint:


Caused by: org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'stackResourceRegistryFactoryBean' defined in class path resource [org/springframework/cloud/aws/autoconfigure/context/ContextStackAutoConfiguration.class]: Unsatisfied dependency expressed through method 'stackResourceRegistryFactoryBean' parameter 0; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'amazonCloudFormation' defined in class path resource [org/springframework/cloud/aws/autoconfigure/context/ContextStackAutoConfiguration.class]: Invocation of init method failed; nested exception is java.lang.IllegalStateException: There is no EC2 meta data available, because the application is not running in the EC2 environment. Region detection is only possible if the application is running on a EC2 instance

Error creating bean with name 'org.springframework.cloud.aws.core.env.ResourceIdResolver.BEAN_NAME': Invocation of init method failed; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'stackResourceRegistryFactoryBean' defined in class path resource [org/springframework/cloud/aws/autoconfigure/context/ContextStackAutoConfiguration.class]: Unsatisfied dependency expressed through method 'stackResourceRegistryFactoryBean' parameter 0; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'amazonCloudFormation' defined in class path resource [org/springframework/cloud/aws/autoconfigure/context/ContextStackAutoConfiguration.class]: Invocation of init method failed; nested exception is java.lang.IllegalStateException: There is no EC2 meta data available, because the application is not running in the EC2 environment. Region detection is only possible if the application is running on a EC2 instance

Resolution applied: Add below code snippet to SpringBootApplication & Click on Run Button in the IDE

@SpringBootApplication(
 exclude = {
 org.springframework.cloud.aws.autoconfigure.context.ContextInstanceDataAutoConfiguration.class,
 org.springframework.cloud.aws.autoconfigure.context.ContextStackAutoConfiguration.class,
 org.springframework.cloud.aws.autoconfigure.context.ContextRegionProviderAutoConfiguration.class
 }
)

Felix Williams · Answer

You can disable loading credentials and regions from EC2 Metadata instance services by using the AWS Java SDK without an EC2 instance. This is done with a Property or an Environmental variable.

System Property: com.amazonaws.sdk.disableEc2Metadata
Environment variable: AWS_EC2_METADATA_DISABLED

However, an alert will still be displayed at application startup. It tells you that the EC2Metadata has been disabled by configuration: "EC2 Instance Metadata Service disabled"

2020-03-27 18:10:42.483 WARN 71123 --- [main] com.amazonaws.util.EC2MetadataUtils : Unable to retrieve the requested metadata (/latest/meta-data/instance-id). EC2 Instance Metadata Service is disabled

com.amazonaws.AmazonClientException: EC2 Instance Metadata Service is disabled
 at com.amazonaws.internal.InstanceMetadataServiceResourceFetcher.readResource(InstanceMetadataServiceResourceFetcher.java:65)
 at com.amazonaws.internal.EC2ResourceFetcher.readResource(EC2ResourceFetcher.java:66)
 at com.amazonaws.util.EC2MetadataUtils.getItems(EC2MetadataUtils.java:402)
 at com.amazonaws.util.EC2MetadataUtils.getData(EC2MetadataUtils.java:371)
 at org.springframework.cloud.aws.context.support.env.AwsCloudEnvironmentCheckUtils.isRunningOnCloudEnvironment(AwsCloudEnvironmentCheckUtils.java:38)
 ...

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Fixing the error: com amazonaws sdkclientexception failed to connect to service endpoint