Java is an amazing programming language that allows programmers to create various applications, be it games, web, desktop, mobile, or others. It is used for back-end development projects either big or small data and development projects. It is an easy-to-learn language to learn as it is an object-oriented language. Java has libraries and frameworks that make programming even simpler for every programmer. Spring Boot is Java open-source framework designed to help you create standalone applications as well as a microservice. When you are working on it, you may encounter the error “error: com amazonaws sdkclientexception failed to connect to service endpoint”.
Though error always seems irritating, there are always some solutions to fix the error warning, same goes for this error. We are here to provide you with valuable tips and ways to get rid of the error warning. Let’s check out how the error shows up
How do you get the error?
When you try to supply an endpoint SQS explicitly in the bean that tries to connect to the server, you end up with the error warning. This is the error you get:
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]
...It appears when you use the following script
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();
}Pom.xml
<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>And that’s how you get the error. Let’s check out the way to sort it out
How To Resolve the Error Message “error: com amazonaws sdkclientexception failed to connect to service endpoint”
If Java SDK is used outside of EC2, the EC2MetaData will be prevented by the configuration with makes the message appear ‘EC2 Instance Metadata Service stops working’. As the program is being run locally, the endpoint can’t be fixed, which makes the error warning pops up. We have the right approach to resolve the error. Have a look
Approach 1 – Setting up AWS configuration property
To solve the error, this approach works. You need to set the AWS configuration property. To do that, follow the below code
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=errorApproach 2 – Code snippet for SpringBootApplication
When you try to run the Spring Boot program for AWS SNS, you get the following error
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 instanceTo fix it, you need to use the following code to the SpringBootApplication
@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
}
)Once done, you need to tap the run button in your IDE. It can fix the issue.
Conclusion
And here you are with the correct ways to solve the issue “error: com amazonaws sdkclientexception failed to connect to service endpoint”. I hope you enjoyed it and find it useful! I wish you all the best!