#ARN AWS POSTGRESQL HOW TO#
To have arn of the specific Lambda version, you need to mention the version number at the last as shown below arn:aws:lambda:us-east-1:4575734578134:function:api-fucntion:1 How to get the ARNs of AWS resources? Lambda ARN Example: Lambda functions can have multiple versions. The following example uses the instance resource-type. Here is how an s3 arn would look like arn:aws:s3:::devopscube-bucketĮC2 ARN Example: ec2 service has sub resource-types like image, security groups etc.
S3 ARN Example: S3 has a flat hierarchy of buckets and associated objects. Here are the arn examples for all the three formats. In the above formats, towards the end, you can see the difference in the formats which changes as per the resource types. arn:aws:service:region:account-id:resource-idĪrn:aws:service:region:account-id:resource-type/resource-idĪrn:aws:service:region:account-id:resource-type:resource-id In most cases, you can build the ARN URL yourself following the below format. If you did not understand the above points, don’t worry, we will look at those with practical examples in the following topics. It can be used in automation scripts and API calls to refer to other resources.One example is to allow a specific IAM user to access only specific ec2 instances. They are used in IAM policies for granting restricted granular access to resources.You will end up using ARNs if you follow the standard security best practices for IAM roles and policies. arn:aws:ec2:us-east-1:4575734578134:instance/i-054dsfg34gdsfg38 Why are ARNs Important?ĪRNs are very important when it comes to IAM policies. It can be an ec2 instance, EBS Volumes, S3 bucket, load balancers, VPCs, route tables, etc.Īn ARN looks like the following for an ec2 instance. Getting ARN as Output in CloudformationĪmazon Resource Names (ARNs) are uniques identifiers assigned to individual AWS resources.
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