Which solution will resolve this issue?
Modify the EC2 instance security group rules to allow inbound traffic on port 80.
Create an IAM user that has the proper permissions for CloudWatch logs. Create an IAM instance profile, and associate it with the IAM user. Associate the instance profile with the EC2 instance.
Create an IAM role that has the proper permissions for CloudWatch logs. Create an IAM instance profile, and associate it with the IAM role. Associate the instance profile with the EC2 instance.
Modify the VPC’s network ACL rules for the public subnet to allow inbound traffic on port 80.
Explanations:
Inbound traffic on port 80 is used for HTTP requests to the web server but does not impact the CloudWatch Logs agent’s ability to push logs to CloudWatch Logs. This rule is irrelevant to log upload.
Although an IAM user with appropriate permissions could have been configured, attaching it as an instance profile is not possible. An IAM role, not an IAM user, must be used to grant permissions to EC2 instances.
An IAM role with the proper permissions (e.g.,CloudWatchLogsFullAccess) should be associated with the EC2 instance through an instance profile, enabling the CloudWatch Logs agent to push logs to CloudWatch.
Modifying the network ACL rules on port 80 does not affect the CloudWatch Logs agent, as the agent uses HTTPS (port 443) to communicate with CloudWatch Logs, not HTTP (port 80).
I suspect that the answer is:
Create an IAM role that has the proper permissions for CloudWatch logs. Create an IAM instance profile, and associate it with the IAM role. Associate the instance profile with the EC2 instance.