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Improve docs about :awscli credentials expiration #34

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2 changes: 1 addition & 1 deletion CHANGELOG.md
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Original file line number Diff line number Diff line change
Expand Up @@ -7,7 +7,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0

## v2.3.0 - 2020-05-15

- Removed hardcoded `Poison` dependency, now uses configured `json_codec` within thP parent `ex_aws` module.
- Removed hardcoded `Poison` dependency, now uses configured `json_codec` within the parent `ex_aws` module.

## v2.2.0 - 2020-05-14

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14 changes: 8 additions & 6 deletions README.md
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Expand Up @@ -40,14 +40,16 @@ When specified in your `~/.aws/config` you can set

```elixir
config :ex_aws,
secret_access_key: [{:awscli, "profile_name", 30}],
access_key_id: [{:awscli, "profile_name", 30}],
secret_access_key: [{:awscli, "profile_name", 1_800}],
access_key_id: [{:awscli, "profile_name", 1_800}],
awscli_auth_adapter: ExAws.STS.AuthCache.AssumeRoleCredentialsAdapter
```

and if the profile `profile_name` sets a `role_arn` then this will make ExAws
issue an `AssumeRoleCredentials` request to fetch the `access_key_id`
and `secret_access_key`.
The third element in the tuple (1_800 in the example) is the desired expiration in seconds.
[AWS enforces a minimum](https://docs.aws.amazon.com/STS/latest/APIReference/API_AssumeRole.html#API_AssumeRole_RequestParameters) of 900 seconds (15 minutes).

### Using AWS CLI config from ENV vars

Expand All @@ -57,8 +59,8 @@ In order to do that, just place in the config the block `awscli_credentials` wit

```elixir
config :ex_aws,
access_key_id: [{:awscli, "default", 30}],
secret_access_key: [{:awscli, "default", 30}],
access_key_id: [{:awscli, "default", 1_800}],
secret_access_key: [{:awscli, "default", 1_800}],
awscli_auth_adapter: ExAws.STS.AuthCache.AssumeRoleCredentialsAdapter,
awscli_credentials: %{
"default" => %{
Expand All @@ -79,8 +81,8 @@ Similarly, it is possible to use a web identity token to perform the assume role

```elixir
config :ex_aws,
secret_access_key: [{:awscli, "profile_name", 30}],
access_key_id: [{:awscli, "profile_name", 30}],
secret_access_key: [{:awscli, "profile_name", 1_800}],
access_key_id: [{:awscli, "profile_name", 1_800}],
awscli_auth_adapter: ExAws.STS.AuthCache.AssumeRoleWebIdentityAdapter
```

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