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Update documentation for required AWS API permissions 

In order for Vault to map IAM instance profiles to roles, Vault
must query the 'iam:GetInstanceProfile' API, so update the documentation
and help to include the additional permissions needed.
This commit is contained in:
Michael S. Fischer 2016-09-28 15:30:32 -07:00
parent d432d3378c
commit 2dd1f584e6
3 changed files with 26 additions and 14 deletions
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4
builtin/credential/aws-ec2/path_config_client.go
View File

@ -13,13 +13,13 @@ func pathConfigClient(b *backend) *framework.Path {
"access_key": &framework.FieldSchema{
Type: framework.TypeString,
Default: "",
Description: "AWS Access key with permissions to query EC2 DescribeInstances API.",
Description: "AWS Access Key ID for the account used to make AWS API requests.",
},
"secret_key": &framework.FieldSchema{
Type: framework.TypeString,
Default: "",
Description: "AWS Secret key with permissions to query EC2 DescribeInstances API.",
Description: "AWS Secret Access Key for the account used to make AWS API requests.",
},
"endpoint": &framework.FieldSchema{

16
builtin/credential/aws-ec2/path_role.go
View File

@ -32,15 +32,19 @@ in its identity document to match the one specified by this parameter.`,
},
"bound_iam_role_arn": {
Type: framework.TypeString,
Description: `If set, defines a constraint on the EC2 instances to be associated with an IAM
role ARN which has a prefix that matches the value specified by this
parameter. Note that an exact match is also a prefix.`,
Description: `If set, defines a constraint on the authenticating EC2 instance
that it must match the IAM role ARN specified by this parameter.
The value is prefix-matched (as though it were a glob ending in
'*'). The configured IAM user or EC2 instance role must be allowed
to execute the 'iam:GetInstanceProfile' action if this is
specified.`,
},
"bound_iam_instance_profile_arn": {
Type: framework.TypeString,
Description: `If set, defines a constraint on the EC2 instances to be associated with an IAM
instance profile ARN which has a prefix that matches the value specified by this
parameter. Note that an exact match is also a prefix.`,
Description: `If set, defines a constraint on the EC2 instances to be associated
with an IAM instance profile ARN which has a prefix that matches
the value specified by this parameter. The value is prefix-matched
(as though it were a glob ending in '*').`,
},
"role_tag": {
Type: framework.TypeString,

20
website/source/docs/auth/aws-ec2.html.md
View File

@ -274,8 +274,13 @@ $ vault auth-enable aws-ec2
#### Configure the credentials required to make AWS API calls
Note: the client uses the official AWS SDK and will use environment variable or
IAM role-provided credentials if available. The AWS credentials used require the IAM action `ec2:DescribeInstances` to be allowed.
If not specified, Vault will attempt to use standard environment variables
(`AWS_ACCESS_KEY_ID` and `AWS_SECRET_ACCESS_KEY`) or IAM EC2 instance role
credentials if available.
The IAM account or role to which the credentials map must allow the
`ec2:DescribeInstances` action. In addition, if IAM Role binding is used (see
`bound_iam_role_arn` below), `iam:GetInstanceProfile` must also be allowed.
```
$ vault write auth/aws-ec2/config/client secret_key=vCtSM8ZUEQ3mOFVlYPBQkf2sO6F/W7a5TVzrl3Oj access_key=VKIAJBRHKH6EVTTNXDHA
@ -843,9 +848,11 @@ in its identity document to match the one specified by this parameter.
<li>
<span class="param">bound_iam_role_arn</span>
<span class="param-flags">optional</span>
If set, defines a constraint on the EC2 instances to be associated with an IAM
role ARN which has a prefix that matches the value specified by this
parameter. Note that an exact match is also a prefix.
If set, defines a constraint on the authenticating EC2 instance that it
must match the IAM role ARN specified by this parameter. The value is
prefix-matched (as though it were a glob ending in `*`). The configured
IAM user or EC2 instance role must be allowed to execute the
`iam:GetInstanceProfile` action if this is specified.
</li>
</ul>
<ul>
@ -854,7 +861,8 @@ parameter. Note that an exact match is also a prefix.
<span class="param-flags">optional</span>
If set, defines a constraint on the EC2 instances to be associated with an IAM
instance profile ARN which has a prefix that matches the value specified by
this parameter. Note that an exact match is also a prefix.
this parameter. The value is prefix-matched (as though it were a glob ending
in `*`).
</li>
</ul>
<ul>