我们的应用程序存在将数据上传到S3存储桶crystal-dyn的问题。此上传在Centos-6实例上使用相同的程序可以正常工作，但在RHEL7实例上失败。
我们有带有角色角色的EC2实例。反过来，此角色具有内联策略crystal-policy：
{
"RoleName": "crystal-role",
"PolicyDocument": {
"Version": "2012-10-17",
"Statement": [
{
"Action": [
"ec2:DescribeInstances"
],
"Resource": "*",
"Effect": "Allow",
"Sid": "AllowDescribeInstances"
},
{
"Action": [
"s3:ListBucket",
"s3:GetBucketLocation"
],
"Resource": [
"arn:aws:s3:::crystal-dyn"
],
"Effect": "Allow",
"Sid": "AllowSeeLogBucket"
},
{
"Action": [
"s3:PutObject"
],
"Resource": [
"arn:aws:s3:::crystal-dyn/*"
],
"Effect": "Allow",
"Sid": "AllowPutLogs"
},
{
"Action": [
"kms:Encrypt",
"kms:GenerateDataKey"
],
"Resource": [
"arn:aws:kms:us-east-1:566:key/a15912a107bb",
"arn:aws:kms:us-east-1:566201213358:key/158d81e9467a"
],
"Effect": "Allow",
"Sid": "AllowEncrypt"
},
{
"Action": "sts:AssumeRole",
"Resource": "arn:aws:iam::389203956472:role/allow-cross-account-exec-api-qa2",
"Effect": "Allow",
"Sid": "AllowApiAccess"
}
]
},
"PolicyName": "crystal-policy"
}
此策略应允许在实例上运行的Java应用程序将数据上传到S3存储桶。
但是，这不会发生。因此，我们创建了一个简单的Java程序来测试上传。请注意，我使用3个版本创建AmazonS3客户端。我从命令行运行此命令：
java -cp ".:lib/*" org.examples.UploadObject
在库中，我有以下罐子：
aws-java-sdk-1.10.10.jar aws-java-sdk-s3-1.11.339.jar httpclient-4.5.5.jar jackson-annotations-2.9.5.jar jackson-databind-2.9.5.jar
aws-java-sdk-core-1.11.423.jar commons-logging-1.1.3.jar httpcore-4.4.9.jar jackson-core-2.9.5.jar joda-time-2.9.9.jar
Java代码：
String clientRegion = "us-east-1";
String bucketName = "crystal-dyn";
String stringObjKeyName = "stringToUploadTest";
try {
AmazonS3 s3Client = AmazonS3ClientBuilder.standard().withCredentials(DefaultAWSCredentialsProviderChain.getInstance()).withRegion(clientRegion).build();
System.out.println("s3Client=" + s3Client);
s3Client.putObject(bucketName, stringObjKeyName, "Uploaded String Object");
System.out.println("Uploading String is done");
}
catch(AmazonServiceException e) {
e.printStackTrace();
}
catch(SdkClientException e) {
e.printStackTrace();
}
try {
System.out.println("Uploading to S3 bucket=" + bucketName + " string=" + stringObjKeyName + " Building with No Creds");
AmazonS3 s3Client = AmazonS3ClientBuilder.standard().withRegion(clientRegion).build();
System.out.println("s3Client=" + s3Client);
s3Client.putObject(bucketName, stringObjKeyName, "Uploaded String Object");
System.out.println("Uploading String is done");
}
catch(AmazonServiceException e) {
e.printStackTrace();
}
catch(SdkClientException e) {
e.printStackTrace();
}
try {
System.out.println("Uploading to S3 bucket=" + bucketName + " string=" + stringObjKeyName + " Building with No Creds and No region");
AmazonS3 s3Client = AmazonS3ClientBuilder.standard().build();
System.out.println("s3Client=" + s3Client);
s3Client.putObject(bucketName, stringObjKeyName, "Uploaded String Object");
System.out.println("Uploading String is done");
}
catch(AmazonServiceException e) {
e.printStackTrace();
}
catch(SdkClientException e) {
e.printStackTrace();
}
对于创建AmazonS3客户端的所有3个版本，该程序只有在EC2 Linux实例上以root用户身份运行时才能成功运行。对于所有其他用户，我们获得了带有异常堆栈的输出，请参见下文。请注意，包括rood在内的任何用户都不会拥有带有证书的.aws目录。
s3Client=com.amazonaws.services.s3.AmazonS3Client@682b2fa
com.amazonaws.SdkClientException: Unable to load AWS credentials from
any provider in the chain: [EnvironmentVariableCredentialsProvider:
Unable to load AWS credentials from environment variables (AWS_ACCESS_KEY_ID (or AWS_ACCESS_KEY) and AWS_SECRET_KEY (or AWS_SECRET_ACCESS_KEY)), SystemPropertiesCredentialsProvider: Unable to load AWS credentials from Java system properties (aws.accessKeyId and aws.secretKey), com.amazonaws.auth.profile.ProfileCredentialsProvider@20d525: profile file cannot be null, com.amazonaws.auth.EC2ContainerCredentialsProviderWrapper@3f56875e: Unable to load credentials from service endpoint]
at com.amazonaws.auth.AWSCredentialsProviderChain.getCredentials(AWSCredentialsProviderChain.java:136)
at com.amazonaws.http.AmazonHttpClient$RequestExecutor.getCredentialsFromContext(AmazonHttpClient.java:1186)
at com.amazonaws.http.AmazonHttpClient$RequestExecutor.runBeforeRequestHandlers(AmazonHttpClient.java:776)
at com.amazonaws.http.AmazonHttpClient$RequestExecutor.doExecute(AmazonHttpClient.java:726)
at com.amazonaws.http.AmazonHttpClient$RequestExecutor.executeWithTimer(AmazonHttpClient.java:719)
at com.amazonaws.http.AmazonHttpClient$RequestExecutor.execute(AmazonHttpClient.java:701)
at com.amazonaws.http.AmazonHttpClient$RequestExecutor.access$500(AmazonHttpClient.java:669)
at com.amazonaws.http.AmazonHttpClient$RequestExecutionBuilderImpl.execute(AmazonHttpClient.java:651)
at com.amazonaws.http.AmazonHttpClient.execute(AmazonHttpClient.java:515)
at com.amazonaws.services.s3.AmazonS3Client.invoke(AmazonS3Client.java:4365)
at com.amazonaws.services.s3.AmazonS3Client.invoke(AmazonS3Client.java:4312)
at com.amazonaws.services.s3.AmazonS3Client.putObject(AmazonS3Client.java:1755)
at com.amazonaws.services.s3.AmazonS3Client.putObject(AmazonS3Client.java:3448)
at org.examples.UploadObject.main(UploadObject.java:20)
Uploading to S3 bucket=dynarch-ac-logs-malachite-dyn
string=stringToUploadTest Building with No Creds
s3Client=com.amazonaws.services.s3.AmazonS3Client@740773a3
com.amazonaws.services.s3.model.AmazonS3Exception: Access Denied (Service: Amazon S3; Status Code: 403; Error Code: AccessDenied; Request ID: AF2735F42CCB60D0; S3 Extended Request ID: 7VyScO6XOs00oB/g0k8bqG3X3Ib01n4uT1xg8/2U72TCOKg8YKNIVgQrjjnF6XzUAfoB24wcYZY=), S3 Extended Request ID: 7VyScO6XOs00oB/g0k8bqG3X3Ib01n4uT1xg8/2U72TCOKg8YKNIVgQrjjnF6XzUAfoB24wcYZY=
at com.amazonaws.http.AmazonHttpClient$RequestExecutor.handleErrorResponse(AmazonHttpClient.java:1660)
at com.amazonaws.http.AmazonHttpClient$RequestExecutor.executeOneRequest(AmazonHttpClient.java:1324)
at com.amazonaws.http.AmazonHttpClient$RequestExecutor.executeHelper(AmazonHttpClient.java:1074)
at com.amazonaws.http.AmazonHttpClient$RequestExecutor.doExecute(AmazonHttpClient.java:745)
at com.amazonaws.http.AmazonHttpClient$RequestExecutor.executeWithTimer(AmazonHttpClient.java:719)
at com.amazonaws.http.AmazonHttpClient$RequestExecutor.execute(AmazonHttpClient.java:701)
at com.amazonaws.http.AmazonHttpClient$RequestExecutor.access$500(AmazonHttpClient.java:669)
at com.amazonaws.http.AmazonHttpClient$RequestExecutionBuilderImpl.execute(AmazonHttpClient.java:651)
at com.amazonaws.http.AmazonHttpClient.execute(AmazonHttpClient.java:515)
at com.amazonaws.services.s3.AmazonS3Client.invoke(AmazonS3Client.java:4365)
at com.amazonaws.services.s3.AmazonS3Client.invoke(AmazonS3Client.java:4312)
at com.amazonaws.services.s3.AmazonS3Client.putObject(AmazonS3Client.java:1755)
at com.amazonaws.services.s3.AmazonS3Client.putObject(AmazonS3Client.java:3448)
at org.examples.UploadObject.main(UploadObject.java:33)
Uploading to S3 bucket=dynarch-ac-logs-malachite-dyn
string=stringToUploadTest Building with No Creds and No region
com.amazonaws.SdkClientException: Unable to find a region via the region provider chain. Must provide an explicit region in the builder or setup environment to supply a region.
at com.amazonaws.client.builder.AwsClientBuilder.setRegion(AwsClientBuilder.java:436)
at com.amazonaws.client.builder.AwsClientBuilder.configureMutableProperties(AwsClientBuilder.java:402)
at com.amazonaws.client.builder.AwsSyncClientBuilder.build(AwsSyncClientBuilder.java:46)
at org.examples.UploadObject.main(UploadObject.java:44)
最佳答案
我只是在想，而不是删除规则。如果解决了问题，您可以尝试遵循吗？（如果您有示例项目，我想自己进行测试）。通常，我使用以下步骤来设置在没有root许可的情况下与S3交互的容器，并使用IAM角色。
https://docs.aws.amazon.com/AmazonECS/latest/developerguide/ecs-agent-install.html
sudo sh -c "echo 'net.ipv4.conf.all.route_localnet = 1' >> /etc/sysctl.conf"
sudo sysctl -p /etc/sysctl.conf
sudo iptables -t nat -A PREROUTING -p tcp -d 169.254.170.2 --dport 80 -j DNAT --to-destination 127.0.0.1:51679
sudo iptables -t nat -A OUTPUT -d 169.254.170.2 -p tcp -m tcp --dport 80 -j REDIRECT --to-ports 51679
sudo sh -c 'iptables-save > /etc/iptables/rules.v4'
//OR
sudo sh -c 'iptables-save > /etc/sysconfig/iptables'