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The issues you're facing with the AWS Elastic Disaster Recovery (DRS) cross-account and cross-region configuration and authentication are not uncommon. Let's address each problem step by step:
-
AWSElasticDisasterRecoveryEC2InstancePolicy sts permission deny:
- The issue with the
AWSElasticDisasterRecoveryEC2InstancePolicy
not allowing the STS permission is likely due to a misconfiguration in the trust policy of theDRS_SourceEC2
role. - Double-check the trust policy of the
DRS_SourceEC2
role in Account B. The trust policy should allow thests:AssumeRole
action for the principal (the IAM user or role) in Account A that will be assuming the role. - Ensure that the
AssumeRoleDRS_SourceEC2
role in Account A has the correct permissions to assume theDRS_SourceEC2
role in Account B. - You can also try adding the
sts:AssumeRole
permission to theAWSElasticDisasterRecoveryEC2InstancePolicy
to troubleshoot this issue.
- The issue with the
-
DRS Authentication Failed:
- The authentication failure in the DRS console is likely due to a network or permission issue between the two accounts.
- Ensure that the VPC peering connection between the two accounts is properly configured and that the necessary routing tables and security group rules are in place to allow communication between the source and target VPCs.
- Check the network ACLs (NACLs) and security groups to ensure they are not blocking the necessary communication between the accounts.
- Verify that the IAM user or role you're using to install the DRS agent has the necessary permissions, including the
AWSElasticDisasterRecoveryAgentInstallationPolicy
. - Try using the AWS CLI or AWS SDK to perform the DRS agent installation and see if you can get more detailed error messages or logs that might help identify the root cause.
To further troubleshoot these issues, you can try the following steps:
-
Simplify the setup:
- Start with a simpler setup, such as configuring DRS within a single AWS account and a single region.
- Once you have a working setup in a single account, gradually introduce the cross-account and cross-region components to identify where the issues are occurring.
-
Verify the IAM roles and policies:
- Carefully review the IAM roles and policies you've created, ensuring that the trust policies and permissions are configured correctly.
- Consider using the AWS CLI or AWS SDK to programmatically validate the IAM roles and policies.
-
Enable enhanced logging and debugging:
- Enable enhanced logging and debugging for the DRS agent installation and the DRS service itself to obtain more detailed error messages and troubleshooting information.
- Review the CloudTrail logs and CloudWatch logs for any relevant error messages or events that might provide more insight into the issues.
-
Engage with AWS Support:
- If you continue to face challenges, consider reaching out to AWS Support for assistance. They may be able to provide more specific guidance or escalate the issue to the appropriate engineering teams.
By following these troubleshooting steps and thoroughly validating your configurations, you should be able to resolve the issues you're facing with the DRS cross-account and cross-region setup.
已回答 23 天前
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