aws-viewer

Read only tools (in Java) for AWS resources. It's tested on Mac not Windows.

Tools

1. Show resources within VPC in HTML format: showVpc
   • Supported services: EC2, ASG, EMR, ES, ECS, VPC Endpoint, Redshift, RDS, ElastiCache, Lambda, ELB, ELBv2, SG, NACL, Route Table.
   • For example: showVpc demo-vpc redact demo-profile > demo.html
   • Permission required:
     • arn:aws:iam::aws:policy/ReadOnlyAccess
2. Show all instance types and are there sufficient capacities for instance types: showInstanceType
   • For example: showInstanceType 1 demo-profile
   • Permission required:
     • arn:aws:iam::aws:policy/ReadOnlyAccess
     • ec2:runInstances
3. Show all regions: showRegionCode
4. Show services in a region: showServiceByRegionCode
5. Compare services in two regions: showServiceCompareByRegionCode
6. Dry run EC2 to test the capacity and your soft limit in region: dryRunEc2
   • Permission required:
     • arn:aws:iam::aws:policy/ReadOnlyAccess
     • ec2:runInstances
7. Dry run EC2 Spot to test the capacity and your soft limit in region: dryRunEc2Spot
   • Permission required:
     • arn:aws:iam::aws:policy/ReadOnlyAccess
     • ec2:runInstances

Configure

1. Create an IAM user and generate access key and secret.
2. Grant ReadOnlyAccess AWS managed policy to above IAM user. For global regions the policy ARN is: arn:aws:iam::aws:policy/ReadOnlyAccess, for China regions the policy ARN is: arn:aws-cn:iam::aws:policy/ReadOnlyAccess. As it's name, the policy grants read permissions only.
3. Follow the guide to config named profiles for above IAM user.
4. showInstanceType might need ec2:runInstances permission, but do not worry it uses dry run, it will not generate cost.

Install

1. Install maven.
2. Run $ mvn package

Get Help

• Get general help:
  • Run $ java -jar target/awsviewer-1.0-SNAPSHOT-jar-with-dependencies.jar
• Get tool help:
  • Use -h, For example, run $ java -jar target/awsviewer-1.0-SNAPSHOT-jar-with-dependencies.jar showVpc -h

Run

• For example, if the VPC name is demo-vpc and the named profile is demo-profile:
  • Run $ java -jar target/awsviewer-1.0-SNAPSHOT-jar-with-dependencies.jar showVpc demo-vpc redact demo-profile > demo.html in redact mode (recommanded).
  • Or run $ java -jar target/awsviewer-1.0-SNAPSHOT-jar-with-dependencies.jar showVpc demo-vpc plain demo-profile > demo.html in plain mode.
• If you want to check what instance type you can use in specified capacity (such as 1) with named profile demo-profile:
  • Run $ java -jar target/awsviewer-1.0-SNAPSHOT-jar-with-dependencies.jar showInstanceType 1 demo-profile

More Information about the Usage

• showVpc can help checking the reliability pillar of Well-Architected practices, or use it as a simple troubleshooting tool for VPC resources.