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52 lines
1.9 KiB
Markdown
52 lines
1.9 KiB
Markdown
# IAM instance profiles for AWS
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This terraform script creates the necessary profiles that need to be attached to Constellation nodes.
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You can create the profiles with the following commands:
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```sh
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mkdir constellation_aws_iam
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cd constellation_aws_iam
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curl --remote-name-all https://raw.githubusercontent.com/edgelesssys/constellation/main/hack/terraform/aws/iam/{main,output,variables}.tf
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terraform init
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terraform apply -auto-approve -var name_prefix=my_constellation
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```
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You can either get the profile names from the Terraform output values `control_plane_instance_profile` and `worker_nodes_instance_profile` and manually add them to your Constellation configuration file.
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Or you can do this with a `yq` command:
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```sh
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yq -i "
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.provider.aws.iamProfileControlPlane = $(terraform output control_plane_instance_profile) |
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.provider.aws.iamProfileWorkerNodes = $(terraform output worker_nodes_instance_profile)
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" path/to/constellation-conf.yaml
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```
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## Development
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### iamlive
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[iamlive](https://github.com/iann0036/iamlive) dynamically determines the minimal
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permissions to call a set of AWS API calls.
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It uses a local proxy to intercept API calls and incrementally generate the AWS
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policy.
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In one session start `iamlive`:
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```sh
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iamlive -mode proxy -bind-addr 0.0.0.0:10080 -force-wildcard-resource -output-file iamlive.policy.json
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```
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In another session execute terraform:
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```sh
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PREFIX="record-iam"
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terraform init
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HTTP_PROXY=http://127.0.0.1:10080 HTTPS_PROXY=http://127.0.0.1:10080 AWS_CA_BUNDLE="${HOME}/.iamlive/ca.pem" terraform apply -auto-approve -var name_prefix=${PREFIX}
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HTTP_PROXY=http://127.0.0.1:10080 HTTPS_PROXY=http://127.0.0.1:10080 AWS_CA_BUNDLE="${HOME}/.iamlive/ca.pem" terraform destroy -auto-approve -var name_prefix=${PREFIX}
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```
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`iamlive` will present the generated policy, and after \<CTRL-C\> the `iamlive` process it will also write it to the specified file.
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