Secure workflows with OIDC authentication

27min
|
Vault
Video

Before a client can interact with Vault, it must authenticate with an auth method to acquire a token. This token has policies attached so that the behavior of the client can be governed.

NOTE: To learn the basics of Vault tokens, go through the Tokens tutorial.

Auth methods perform authentication to verify the user or machine-supplied information. Some of the supported auth methods are targeted towards users while others are targeted toward machines or apps.

Challenge

Vault supports a number of auth methods for users or system to prove their identity so that a token with appropriate policies can be obtained. Delegated authorization methods based on OAuth 2.0 are convenient for users and have become increasingly common, but the identity semantics are vague and vary between providers.

Solution

Vault supports OpenID Connect (OIDC). OIDC provides an identity layer on top of OAuth 2.0 to address the shortcomings of using OAuth 2.0 for establishing identity. The OIDC auth method allows a user's browser to be redirected to a configured identity provider, complete login, and then be routed back to Vault's UI with a newly-created Vault token.

This method is familiar for most users. For operators, the types of identity data that can be provided as part of OIDC allow for flexible mapping to Vault's identity system.

Prerequisites

To perform the tasks described in this tutorial, you need to have a Vault 1.1 or later. Refer to the Vault install guide to install Vault. Make sure that your Vault server has been initialized and unsealed.

Auth0 Account

To demonstrate an end-to-end workflow, this tutorial uses Auth0, so create an account if you don't have one.

Note

This tutorial uses Auth0. Some settings in this tutorial may be specific to Auth0. If you prefer to try the OIDC auth method using Google OAuth, refer to Vault OpenID Demo. For other provider configuration steps, refer to the OIDC Provider Setup documentation.

Policy requirements

Note

For the purpose of this tutorial, you can use the root token to work with Vault. However, it is recommended that root tokens are only used for just enough initial setup or in emergencies. As a best practice, use tokens with an appropriate set of policies based on your role in the organization.

To perform all tasks demonstrated in this tutorial, your policy must include the following permissions:

# Mount the OIDC auth method
path "sys/auth/oidc" {
  capabilities = [ "create", "read", "update", "delete", "sudo" ]
}

# Configure the OIDC auth method
path "auth/oidc/*" {
  capabilities = [ "create", "read", "update", "delete", "list" ]
}

# Write ACL policies
path "sys/policies/acl/*" {
  capabilities = [ "create", "read", "update", "delete", "list" ]
}

# List available secrets engines to retrieve accessor ID
path "sys/mounts" {
  capabilities = [ "read" ]
}

If you are not familiar with policies, complete the policies tutorial.

Note

If you receive any errors following this tutorial, please review the Troubleshooting section.

Lab Setup

In another terminal, start a Vault dev server with root as the root token.
```
$ vault server -dev -dev-root-token-id root
```
The Vault dev server defaults to running at 127.0.0.1:8200. The server is initialized and unsealed.
Insecure operation
Do not run a Vault dev server in production. This approach starts a Vault server with an in-memory database and runs in an insecure way.
Export an environment variable for the vault CLI to address the Vault server.
```
$ export VAULT_ADDR=http://127.0.0.1:8200
```
Export an environment variable for the vault CLI to address the Vault server through the OIDC interface.
```
$ export VAULT_OIDC_ADDR=http://127.0.0.1:8250
```
Export an environment variable for the vault CLI to authenticate with the Vault server.
```
$ export VAULT_TOKEN=root
```
Note
For these tasks, you can use Vault's root token. However, it is recommended that root tokens are only used for enough initial setup or in emergencies. As a best practice, use an authentication method or token that meets the policy requirements.

The Vault server is ready.

Note

If you do not have access to an HCP Vault Dedicated cluster, visit the Create a Vault Cluster on HCP tutorial.

Launch the HCP Portal and login.
Click Vault in the left navigation pane.
In the Vault clusters pane, click vault-cluster.
Under Cluster URLs, click Public Cluster URL.
In a terminal, set the VAULT_ADDR environment variable to the copied address.
```
$ export VAULT_ADDR=<Public_Cluster_URL>
```
Return to the Overview page and click Generate token.
Within a few moments, a new token will be generated.
Copy the Admin Token.
Return to the terminal and set the VAULT_TOKEN environment variable.
```
$ export VAULT_TOKEN=<token>
```
Set the VAULT_NAMESPACE environment variable to admin.
```
$ export VAULT_NAMESPACE=admin
```
The admin namespace is the top-level namespace automatically created by HCP Vault. All CLI operations default to use the namespace defined in this environment variable.

Type vault status to verify your connectivity to the Vault cluster.

$ vault status

Key                      Value
---                      -----
Recovery Seal Type       shamir
Initialized              true
Sealed                   false
Total Recovery Shares    1
Threshold                1
Version                  1.9.2+ent
Storage Type             raft
...snipped...

The Vault Dedicated server is ready.

Get Auth0 credentials

If you do not have an account with Auth0, sign up to create one first.

In the Auth0 dashboard, click Applications to expand the accordion menu and select Applications.
Click the ellipses for Default App and select Settings.
Copy the Domain.
In a terminal, set the variable AUTH0_DOMAIN to the Domain.
```
$ export AUTH0_DOMAIN=<Domain>
```
Copy the Client ID.
In a terminal, set the variable AUTH0_CLIENT_ID to the Client ID.
```
$ export AUTH0_CLIENT_ID=<Client ID>
```
Copy the Client Secret.
In a terminal, set the variable AUTH0_CLIENT_SECRET to the Client Secret.
```
$ export AUTH0_CLIENT_SECRET=<Client Secret>
```
In the Allowed Callback URLs field, enter the URL for your Vault instance.
For example, if you are running Vault locally:
http://localhost:8250/oidc/callback, http://localhost:8200/ui/vault/auth/oidc/oidc/callback
The http://localhost:8250/oidc/callback address enables the Vault CLI to login via the OIDC method. The http://localhost:8200/ui/vault/auth/oidc/oidc/callback address enables the Vault web UI to login via the OIDC method.
Note
The callback URLs must be comma-separated.
For example, if you are running Vault in HCP, replace -URL- with the public address of your Vault Dedicated.
Note
If you plan to login using the Vault UI, ensure the callback URLs are all lowercase. This ensures the callback URL will match the URL opened by the web browser.
http://localhost:8250/oidc/callback, -URL-/ui/vault/auth/oidc/oidc/callback
The http://localhost:8250/oidc/callback address enables the Vault CLI to login via the OIDC method. The -URL-/ui/vault/auth/oidc/oidc/callback address enables the Vault web UI to login via the OIDC method.
Note
The callback URLs must be comma-separated.
Scroll to to the bottom of the page and click Save Changes.

Create Vault policies

Within an organization personas with different capabilities are required to interact with the secrets stored in Vault. Each persona requires a different set of capabilities. These are expressed in policies. If you are not familiar with policies, complete the policies tutorial.

Create the policy file named manager.hcl.

$ tee manager.hcl <<EOF
# Manage k/v secrets
path "/secret/*" {
    capabilities = ["create", "read", "update", "delete", "list"]
}
EOF

This policy grants most capabilities to all paths in KV secrets engine enabled at the secret path.

Create the policy file named reader.hcl.
```
$ tee reader.hcl <<EOF
# Read permission on the k/v secrets
path "/secret/*" {
    capabilities = ["read", "list"]
}
EOF
```
This policy grants read and list capabilities to all paths in the KV secrets engine enabled at the secret path.
Create a policy named manager with the policy defined in manager.hcl.
```
$ vault policy write manager manager.hcl
```
Create a policy named reader with the policy defined in reader.hcl.
```
$ vault policy write reader reader.hcl
```
List all the policies.
```
$ vault policy list
default
manager
reader
root
```
The manager and reader policies are present in the list alongside the policies that Vault automatically creates.

Create an API request payload containing the JSON formatted manager policy.

$ tee payload-manager.json <<EOF
{
   "policy": "path \"/secret/*\" {\n\tcapabilities = [\"create\", \"read\", \"update\", \"delete\", \"list\"]\n}\n"
}
EOF

Create a policy named manager with the policy defined in payload-mgr.json.

$ curl --header "X-Vault-Token: $VAULT_TOKEN" --request PUT \
      --data @payload-manager.json \
      $VAULT_ADDR/v1/sys/policies/acl/manager

Create an API request payload containing the JSON formatted reader policy.

$ tee payload-reader.json <<EOF
{
"policy": "path \"/secret/*\" {\n\tcapabilities = [\"read\", \"list\"]\n}\n"
}
EOF

Create a policy named reader with the policy defined in payload-reader.json.

$ curl --header "X-Vault-Token: $VAULT_TOKEN" --request PUT \
      --data @payload-reader.json \
      $VAULT_ADDR/v1/sys/policies/acl/reader

List all the policies.
```
$ curl --header "X-Vault-Token: $VAULT_TOKEN" \
   $VAULT_ADDR/v1/sys/policy | jq '.data | .policies'
```
The manager and reader policies are present in the list alongside the policies that Vault automatically creates.

Create an API request payload containing the JSON formatted manager policy.

$ tee payload-manager.json <<EOF
{
   "policy": "path \"/secret/*\" {\n\tcapabilities = [\"create\", \"read\", \"update\", \"delete\", \"list\"]\n}\n"
}
EOF

Create a policy named manager with the policy defined in payload-mgr.json.

$ curl --header "X-Vault-Token: $VAULT_TOKEN" --request PUT \
   --header "X-Vault-Namespace: $VAULT_NAMESPACE" \
   --data @payload-manager.json \
   $VAULT_ADDR/v1/sys/policies/acl/manager

Create an API request payload containing the JSON formatted reader policy.

$ tee payload-reader.json <<EOF
{
"policy": "path \"/secret/*\" {\n\tcapabilities = [\"read\", \"list\"]\n}\n"
}
EOF

Create a policy named reader with the policy defined in payload-reader.json.

$ curl --header "X-Vault-Token: $VAULT_TOKEN" --request PUT \
   --header "X-Vault-Namespace: $VAULT_NAMESPACE" \
   --data @payload-reader.json \
   $VAULT_ADDR/v1/sys/policies/acl/reader

List all the policies.

$ curl --header "X-Vault-Token: $VAULT_TOKEN" \
   --header "X-Vault-Namespace: $VAULT_NAMESPACE" \
   $VAULT_ADDR/v1/sys/policy | jq '.data | .policies'

The manager and reader policies are present in the list alongside the policies that Vault automatically creates.

Create the policy file named manager.hcl.

$ tee manager.hcl <<EOF
# Manage k/v secrets
path "/secret/*" {
    capabilities = ["create", "read", "update", "delete", "list"]
}
EOF

This policy grants most capabilities to all paths in KV secrets engine enabled at the secret path.

Create the policy file named reader.hcl.
```
$ tee reader.hcl <<EOF
# Read permission on the k/v secrets
path "/secret/*" {
    capabilities = ["read", "list"]
}
EOF
```
This policy grants read and list capabilities to all paths in the KV secrets engine enabled at the secret path.
Open a web browser and launch the Vault UI (e.g. http://127.0.0.1:8200/ui) and then login.
Select the Policies tab and then select Create ACL policy.
Toggle Upload file sliding switch, and click Choose a file to select your manager.hcl file you authored. This loads the policy and sets the Name to be manager.
Click Create Policy to complete.
Return to ACL Policies and then select Create ACL policy again.
Toggle Upload file sliding switch, and click Choose a file to select your reader.hcl file you authored.
Click Create Policy to complete.

Enable OIDC auth method

OIDC must be enabled and configured before it can be used.

Enable the oidc auth method at the default path.
```
$ vault auth enable oidc
```
The OIDC auth method is enabled at the path oidc.
Configure the oidc auth method.
```
$ vault write auth/oidc/config \
         oidc_discovery_url="https://$AUTH0_DOMAIN/" \
         oidc_client_id="$AUTH0_CLIENT_ID" \
         oidc_client_secret="$AUTH0_CLIENT_SECRET" \
         default_role="reader"
```
The oidc_discovery_url, oidc_client_id, and oidc_client_secret are set to the variables defined in the Get Auth0 credentials step.
The default_role is set to reader. This is a role defined for the authentication method that assigns the reader policy.

Create the reader role.

$ vault write auth/oidc/role/reader \
      bound_audiences="$AUTH0_CLIENT_ID" \
      allowed_redirect_uris="http://localhost:8200/ui/vault/auth/oidc/oidc/callback" \
      allowed_redirect_uris="http://localhost:8250/oidc/callback" \
      user_claim="sub" \
      token_policies="reader"

$ vault write auth/oidc/role/reader \
      bound_audiences="$AUTH0_CLIENT_ID" \
      allowed_redirect_uris="$VAULT_ADDR/ui/vault/auth/oidc/oidc/callback" \
      allowed_redirect_uris="http://localhost:8250/oidc/callback" \
      user_claim="sub" \
      token_policies="reader"

The allowed_redirect_uris and allowed_redirect_uris use the Allowed Callback URLs defined in the Get Auth0 credentials step. The user_claim sets the claim to use to uniquely identify the user.

Enable the oidc auth method at the path auth/oidc.

$ curl --header "X-Vault-Token: $VAULT_TOKEN" \
      --request POST \
      --data '{"type": "oidc"}' \
      $VAULT_ADDR/v1/sys/auth/oidc

The above example passes the type (oidc) in the request payload at the sys/auth/oidc endpoint.

Create an API request payload to configure the oidc auth method payload.
```
$ tee oidc_config.json <<EOF
{
   "oidc_discovery_url": "https://$AUTH0_DOMAIN/",
   "oidc_client_id": "$AUTH0_CLIENT_ID",
   "oidc_client_secret": "$AUTH0_CLIENT_SECRET",
   "default_role": "reader"
}
EOF
```
The oidc_discovery_url, oidc_client_id, and oidc_client_secret are set to the variables defined in the Get Auth0 credentials step.
The default_role is set to reader. This is a role defined for the authentication method that assigns the reader policy.

Configure the oidc auth method.

$ curl --header "X-Vault-Token: $VAULT_TOKEN" \
      --request POST \
      --data @oidc_config.json \
      $VAULT_ADDR/v1/auth/oidc/config

Create an API request payload containing the definition of the reader role.

$ tee oidc_role.json <<EOF
{
      "bound_audiences": "$AUTH0_CLIENT_ID",
      "allowed_redirect_uris": [
         "http://localhost:8200/ui/vault/auth/oidc/oidc/callback",
         "http://localhost:8250/oidc/callback"
      ],
      "user_claim": "sub",
      "token_policies": ["reader"]
}
EOF

Create the reader role.

$ curl --header "X-Vault-Token: $VAULT_TOKEN" \
      --request POST \
      --data @oidc_role.json \
      $VAULT_ADDR/v1/auth/oidc/role/reader

Enable the oidc auth method at the path auth/oidc.

$ curl --header "X-Vault-Token: $VAULT_TOKEN" \
   --header "X-Vault-Namespace: $VAULT_NAMESPACE" \
   --request POST \
   --data '{"type": "oidc"}' \
   $VAULT_ADDR/v1/sys/auth/oidc

The above example passes the type (oidc) in the request payload at the sys/auth/oidc endpoint.

Create an API request payload to configure the oidc auth method payload.
```
$ tee oidc_config.json <<EOF
{
   "oidc_discovery_url": "https://$AUTH0_DOMAIN/",
   "oidc_client_id": "$AUTH0_CLIENT_ID",
   "oidc_client_secret": "$AUTH0_CLIENT_SECRET",
   "default_role": "reader"
}
EOF
```
The oidc_discovery_url, oidc_client_id, and oidc_client_secret are set to the variables defined in the Get Auth0 credentials step.
The default_role is set to reader. This is a role defined for the authentication method that assigns the reader policy.

Configure the oidc auth method.

$ curl --header "X-Vault-Token: $VAULT_TOKEN" \
   --header "X-Vault-Namespace: $VAULT_NAMESPACE" \
   --request POST \
   --data @oidc_config.json \
   $VAULT_ADDR/v1/auth/oidc/config

Create an API request payload containing the definition of the reader role.

$ tee oidc_role.json <<EOF
{
      "bound_audiences": "$AUTH0_CLIENT_ID",
      "allowed_redirect_uris": [
         "$VAULT_ADDR/ui/vault/auth/oidc/oidc/callback",
         "http://localhost:8250/oidc/callback"
      ],
      "user_claim": "sub",
      "token_policies": ["reader"]
}
EOF

Create the reader role.

$ curl --header "X-Vault-Token: $VAULT_TOKEN" \
   --header "X-Vault-Namespace: $VAULT_NAMESPACE" \
   --request POST \
   --data @oidc_role.json \
   $VAULT_ADDR/v1/auth/oidc/role/reader

In the Web UI, select Access.
With Auth Methods selected, click Enable new method.
Select the OIDC radio-button and click Next.
Click Enable Method.
This enables the oidc auth method at oidc path.
In the Configuration page, enter the Auth0 Domain URL in the OIDC discovery URL field.
This is the Domain retrieved in the Get Auth0 credentials step. The URL should look like: https://<AUTH0_DOMAIN>/
Enter reader in the Default_role field.
Toggle the OIDC Options to expand it.
Enter the Client ID the OIDC client ID field.
This is the Client ID retrieved in the Get Auth0 credentials step.
Enter the Client Secret in the OIDC client secret field.
This is the Client Secret retrieved in the Get Auth0 credentials step.
Example:
Click Save.
Click the Vault CLI shell icon (>_) to open a command shell.

Within the terminal, create the reader role.

$ vault write auth/oidc/role/reader \
      bound_audiences="$AUTH0_CLIENT_ID" \
      allowed_redirect_uris="http://localhost:8200/ui/vault/auth/oidc/oidc/callback" \
      allowed_redirect_uris="http://localhost:8250/oidc/callback" \
      user_claim="sub" \
      token_policies="reader"

Create a role

Click the icon (>_) again to hide the shell.

When prompted, accept and authorize the Vault access to your Default App.

Note

Log into your Auth0 account with the same username and password that you used to configure Auth0 earlier in this tutorial.

Expected output looks like:

Complete the login via your OIDC provider. Launching browser to:

   https://dev-2i513orw.auth0.com/authorize?client_id=FFXlsY...snip...

Waiting for OIDC authentication to complete...
WARNING! The VAULT_TOKEN environment variable is set! The value of this
variable will take precedence; if this is unwanted please unset VAULT_TOKEN or
update its value accordingly.

Success! You are now authenticated. The token information displayed below
is already stored in the token helper. You do NOT need to run "vault login"
again. Future Vault requests will automatically use this token.

Key                  Value
---                  -----
token                hvs.CAESIGZPclnJZWNhvr8NqC_AQdmorQ5WUyh6TchZg9FUO89DGh4KHGh2cy5Bdm10ZERxUmNTcXdZUXhBdkZSMDF1dUs
token_accessor       4Rb16tWG40xMaBSR2EUanUXD
token_duration       768h
token_renewable      true
token_policies       ["default" "reader"]
identity_policies    []
policies             ["default" "reader"]
token_meta_role      reader

Unauthorized Redirect URI Error

If you received unauthorized redirect_uri: redirect_uri=http://127.0.0.1:8250/oidc/callback error, update the oidc configuration for the reader role.

Update the reader role.

$ vault write auth/oidc/role/reader \
        bound_audiences="$AUTH0_CLIENT_ID" \
        allowed_redirect_uris="http://localhost:8200/ui/vault/auth/oidc/oidc/callback" \
        allowed_redirect_uris="http://127.0.0.1:8250/oidc/callback" \
        user_claim="sub" \
        token_policies="reader"

Sign out of the Vault UI if you are already logged in.
Select OIDC from the Method drop-down list.
Note
If you do NOT see the Sign in with Auto0 button, refer to Unauthorized Redirect URI Error.
In the Role, you can enter reader or since the default role is already set to "reader", you can leave it blank.
Click Sign in with Auth0. If prompted, accept and authorize the Vault access to your Default App.
Note
If your web browser has pop-up blocker enabled, you may need to allow your Vault server address from the blocked list.
Now, you should be logged in.

Unauthorized Redirect URI Error

If you received unauthorized redirect_uri: redirect_uri=http://127.0.0.1:8200/ui/vault/auth/oidc/oidc/callback error, update the oidc configuration for the reader role.

Update the reader role.

$ vault write auth/oidc/role/reader \
        bound_audiences="$AUTH0_CLIENT_ID" \
        allowed_redirect_uris="http://127.0.0.1:8200/ui/vault/auth/oidc/oidc/callback" \
        allowed_redirect_uris="http://localhost:8250/oidc/callback" \
        user_claim="sub" \
        token_policies="reader"

The user logs in to Vault through OIDC with Auth0. The token issued to the user is assigned through the reader role which grants it the capabilities defined in the reader role.

Create an Auth0 group

A user that authenticates through OIDC with Auth0 may also have their Vault role assigned through metadata defined in Auth0.

In the Auth0 dashboard, select User Management > Users.
Click on your user name.
Enter the following metatada in the app_metadata text block.
```
{
  "roles": ["kv-mgr"]
}
```
When this user authenticates, this metadata is provided to Vault in the callback. Vault requests a token from the Vault group named kv-mgr.
Click Save.
Click Action in the left navigation menu and select Flows.
Click Login then +
Select Build from scratch.
Enter Set user role in the Name field.
Click on Create

Enter the following script in the Script field.

exports.onExecutePostLogin = async (event, api) => {
 if (event.authorization) {
 event.user.app_metadata = event.user.app_metadata || {};
 api.idToken.setCustomClaim("https://example.com/roles",event.user.app_metadata.roles);
 }
};

This script ensures that the user has the app_metadata field; creating one if none exists. Then assigns to the context.idToken all the roles defined for the user; or an empty list if none exist.

Click Deploy.
NOTE: The use of example.com is used here for demonstration.
Click Back to flow.
Click the Custom tab, drag the Set user role Action to the Login flow, and then click Apply.
For an extended details about creating and managing roles in Auth0, refer to the online documentation.

Create an external Vault group

A group claim is used to uniquely identify a set of groups to which the user belongs (this will be used as the names for the identity group aliases created after a successful login).

Note

If you are unfamiliar with Vault Identity, refer to the Identity: Entities and Groups tutorial.

Login as the root user.
The Login with OIDC step has you authenticate with the capabilities of the reader policy. This token is unable to configure the OIDC auth method.
```
$ vault login $VAULT_TOKEN
```

Create a role named kv-mgr.

$ vault write auth/oidc/role/kv-mgr \
         bound_audiences="$AUTH0_CLIENT_ID" \
         allowed_redirect_uris="http://localhost:8200/ui/vault/auth/oidc/oidc/callback" \
         allowed_redirect_uris="http://localhost:8250/oidc/callback" \
         user_claim="sub" \
         token_policies="reader" \
         groups_claim="https://example.com/roles"

$ vault write auth/oidc/role/kv-mgr \
         bound_audiences="$AUTH0_CLIENT_ID" \
         allowed_redirect_uris="$VAULT_ADDR/ui/vault/auth/oidc/oidc/callback" \
         allowed_redirect_uris="http://localhost:8250/oidc/callback" \
         user_claim="sub" \
         token_policies="reader" \
         groups_claim="https://example.com/roles"

This role is defined similarly to the previously created role. The reader capability is assigned to the token. Additional policies are assigned through any groups that the user claims to belong. The groups_claim field defines the value of https://example.com/roles. This value is the key in the context.idToken that stores all the roles defined in the metadata for the user.

Create an external group, named manager with the manager policy.

$ vault write identity/group name="manager" type="external" \
         policies="manager" \
         metadata=responsibility="Manage K/V Secrets"

Example output:

Key     Value
---     -----
id      1713c9c1-42c1-de6a-5d13-44f7c06f113f
name    manager

Create a variable named GROUP_ID to store the id of the manager group.
```
$ GROUP_ID=$(vault read -field=id identity/group/name/manager)
```
Create a variable named OIDC_AUTH_ACCESSOR to store the accessor of the oidc authentication method.
```
$ OIDC_AUTH_ACCESSOR=$(vault auth list -format=json  | jq -r '."oidc/".accessor')
```
This displays all authentication methods in JSON and then parses that list, through jq, to extract the accessor field of the oidc authentication method.

Create a group alias named kv-mgr.

$ vault write identity/group-alias name="kv-mgr" \
         mount_accessor="$OIDC_AUTH_ACCESSOR" \
         canonical_id="$GROUP_ID"

The kv-mgr group alias connects the oidc authentication method and the manager group with the manager policy.

Create an API request payload with the kv-mgr role definition.

$ tee oidc_role-2.json <<EOF
{
      "bound_audiences": "$AUTH0_CLIENT_ID",
      "allowed_redirect_uris": [
         "http://localhost:8200/ui/vault/auth/oidc/oidc/callback",
         "http://127.0.0.1:8200/ui/vault/auth/oidc/oidc/callback",
         "http://localhost:8250/oidc/callback",
         "http://127.0.0.1:8250/oidc/callback"
      ],
      "user_claim": "sub",
      "token_policies": ["reader"],
      "groups_claim": "https://example.com/roles"
}
EOF

Create the kv-mgr role.

$ curl --header "X-Vault-Token: $VAULT_TOKEN" \
      --request POST \
      --data @oidc_role-2.json \
      $VAULT_ADDR/v1/auth/oidc/role/kv-mgr

Create an API request payload that defines a group named manager that is assigned the manager policy.

$ tee payload-mgr.json <<EOF
{
   "name": "manager",
   "policies": ["manager"],
   "type": "external",
   "metadata": {
      "responsibility": "Manage K/V Secrets"
   }
}
EOF

Create an external group with the group definition in payload-mgr.json.

$ curl --header "X-Vault-Token: $VAULT_TOKEN" \
      --request POST \
      --data @payload-mgr.json \
      $VAULT_ADDR/v1/identity/group | jq

Example output:

{
   ...
   "data": {
      "id": "4d4e51c9-1f92-4109-49f7-db7b44764cad",
      "name": "manager"
   },
   ...
}

Create a variable named GROUP_ID to store the id of the manager group.

$ GROUP_ID=$(curl --header "X-Vault-Token: $VAULT_TOKEN" \
   --request GET \
   $VAULT_ADDR/v1/identity/group/name/manager | jq '.data | .id' -r)

Create a variable named OIDC_AUTH_ACCESSOR to store the accessor of the oidc authentication method.

$ OIDC_AUTH_ACCESSOR=$(curl --header "X-Vault-Token: $VAULT_TOKEN" \
   $VAULT_ADDR/v1/sys/auth | jq '.data | ."oidc/".accessor' -r)

Create an API request payload to create a group aliases named kv-mgr.

$ tee payload-alias.json <<EOF
{
   "canonical_id": "$GROUP_ID",
   "mount_accessor": "$OIDC_AUTH_ACCESSOR",
   "name": "kv-mgr"
}
EOF

Create manager group alias.

$ curl --header "X-Vault-Token: $VAULT_TOKEN" \
      --request POST -s \
      --data @payload-alias.json \
      $VAULT_ADDR/v1/identity/group-alias | jq

Create an API request payload with the kv-mgr role definition.
```
$ tee oidc_role-2.json <<EOF
{
      "bound_audiences": "$AUTH0_CLIENT_ID",
      "allowed_redirect_uris": [
         "$VAULT_ADDR/ui/vault/auth/oidc/oidc/callback",
         "http://localhost:8250/oidc/callback"
      ],
      "user_claim": "sub",
      "token_policies": ["reader"],
      "groups_claim": "https://example.com/roles"
}
EOF
```
This role is defined similarly to the previously created role. The reader capability is assigned to the token. Additional policies are assigned through any groups that the user claims to belong. The groups_claim field defines the value of https://example.com/roles. This value is the key in the context.idToken that stores all the roles defined in the metadata for the user.

Create the kv-mgr role.

$ curl --header "X-Vault-Token: $VAULT_TOKEN" \
   --header "X-Vault-Namespace: $VAULT_NAMESPACE" \
   --request POST \
   --data @oidc_role-2.json \
   $VAULT_ADDR/v1/auth/oidc/role/kv-mgr

Create an API request payload that defines a group named manager that is assigned the manager policy.

$ tee payload-mgr.json <<EOF
{
   "name": "manager",
   "policies": ["manager"],
   "type": "external",
   "metadata": {
      "responsibility": "Manage K/V Secrets"
   }
}
EOF

Create an external group with the group definition in payload-mgr.json.

$ curl --header "X-Vault-Token: $VAULT_TOKEN" \
   --header "X-Vault-Namespace: $VAULT_NAMESPACE" \
   --request POST \
   --data @payload-mgr.json \
   $VAULT_ADDR/v1/identity/group | jq

Example output:

{
   ...
   "data": {
      "id": "4d4e51c9-1f92-4109-49f7-db7b44764cad",
      "name": "manager"
   },
   ...
}

Create a variable named GROUP_ID to store the id of the manager group.

$ GROUP_ID=$(curl --header "X-Vault-Token: $VAULT_TOKEN" \
   --header "X-Vault-Namespace: $VAULT_NAMESPACE" \
   --request GET \
   $VAULT_ADDR/v1/identity/group/name/manager | jq '.data | .id' -r)

Create a variable named OIDC_AUTH_ACCESSOR to store the accessor of the oidc authentication method.

$ OIDC_AUTH_ACCESSOR=$(curl --header "X-Vault-Token: $VAULT_TOKEN" \
   --header "X-Vault-Namespace: $VAULT_NAMESPACE" \
   $VAULT_ADDR/v1/sys/auth | jq '.data | ."oidc/".accessor' -r)

Create an API request payload to create a group aliases named kv-mgr.

$ tee payload-alias.json <<EOF
{
   "canonical_id": "$GROUP_ID",
   "mount_accessor": "$OIDC_AUTH_ACCESSOR",
   "name": "kv-mgr"
}
EOF

Create manager group alias.

$ curl --header "X-Vault-Token: $VAULT_TOKEN" \
   --header "X-Vault-Namespace: $VAULT_NAMESPACE" \
   --request POST -s \
   --data @payload-alias.json \
   $VAULT_ADDR/v1/identity/group-alias | jq

Authenticate with kv-mgr role

With the kv-mgrrole configured, you can now authenticate and have the manager policy assigned from the group configuration.

$ vault login -method=oidc role="kv-mgr"

Complete the login via your OIDC provider. Launching browser to:

      https://dev-2i513orw.auth0.com/authorize?client_id=FFXlsY2atr_wfNaF_hMtsE-zTAeTZnu8&nonce=5ad8af6eab5146d355ab5b25712b0d7776b384f7&redirect_uri=http%3A%2F%2Flocalhost%3A8250%2Foidc%2Fcallback&response_type=code&scope=openid&state=721184bf8d5abe295a617d1cb98ab75c1a7d39fc

Success! You are now authenticated. The token information displayed below
is already stored in the token helper. You do NOT need to run "vault login"
again. Future Vault requests will automatically use this token.

Key                  Value
---                  -----
token                s.WlmlH2yPid7sSKYbBlimD4MD
token_accessor       zd4MBqI9HD4YVhIWQKU6tz0b
token_duration       768h
token_renewable      true
token_policies       ["default" "reader"]
identity_policies    ["manager"]
policies             ["default" "manager" "reader"]
token_meta_role      kv-mgr

The returned token inherits the default, manager and reader policies. The manager policy is assigned because the value kv-mgr, defined in the metadata, has an alias that belongs to the manager group. The reader policy is assigned to the kv-mgr role.

To enable your users login with their Google OAuth or any other social connections, click Marketplace > Social Connections from the Auth0 dashboard.

Social Connections

Click the tile for the integration you want to add and click the Add Integration button.

Social Connections

Follow the wizard for the selected integration, configuring the integration as needed and click the Create button.

Select your application under the Applications tab.

Social Connections

Any integrations you enabled will not be available when authenticating with Auth0.

Social Connections

NOTE: The client ID and client secret are unique to each application that you configured OIDC auth method with.

Troubleshooting

When configuring OIDC, configuration settings must be configured as documented, otherwise you may experience errors when authenticating. Below are some common error messages and how to troubleshoot them.

oidc: issuer did not match the issuer returned by provider

Error writing data to auth/oidc/config: Error making API request.

URL: PUT http://127.0.0.1:8200/v1/auth/oidc/config
Code: 400. Errors:

* error checking oidc discovery URL: error creating provider with given values: NewProvider:
unable to create provider: oidc: issuer did not match the issuer returned by provider, expected
"https://example.auth0.com" got "https://example.auth0.com/"

Problem: This error can occur if domain being passed to the Vault configuration does not match the value returned by the provider.

Troubleshooting steps:

Check the Auth0 domain environment variable.
```
echo $AUTH0_DOMAIN
```
Verify it matches the client domain from the Auth0 admin portal.

If the value matches, verify the OIDC configuration passed to Vault is configured correctly.

$ vault write auth/oidc/config \
      oidc_discovery_url="https://$AUTH0_DOMAIN/" \
      oidc_client_id="$AUTH0_CLIENT_ID" \
      oidc_client_secret="$AUTH0_CLIENT_SECRET" \
      default_role="reader"

both 'oidc_client_id' and 'oidc_client_secret' must be set for OIDC

Error writing data to auth/oidc/config: Error making API request.

URL: PUT http://127.0.0.1:8200/v1/auth/oidc/config
Code: 400. Errors:

* both 'oidc_client_id' and 'oidc_client_secret' must be set for OIDC

Problem: This error can occur if either the oidc_client_id or oidc_client_secret value is empty or null when passed to the Vault OIDC configuration.

Note

This error should not occur if the values are wrong - the configuration should still succeed.

Troubleshooting steps:

Check the AUTH0_CLIENT_ID and AUTH0_CLIENT_SECRET environment variables.
```
echo ID $AUTH0_CLIENT_ID "\n"SECRET $AUTH0_CLIENT_SECRET
```
Verify they match are not an empty value.

If the values are valid, verify the OIDC configuration passed to Vault are using the correct environment variables.

$ vault write auth/oidc/config \
      oidc_discovery_url="https://$AUTH0_DOMAIN/" \
      oidc_client_id="$AUTH0_CLIENT_ID" \
      oidc_client_secret="$AUTH0_CLIENT_SECRET" \
      default_role="reader"

Vault login failed. Error exchanging oidc code

Error authenticating: Error making API request.

URL: GET http://127.0.0.1:8200/v1/auth/oidc/oidc/callback?client_nonce=...snip...
Code: 400. Errors:

* Vault login failed. Error exchanging oidc code: "Provider.Exchange: unable to
exchange auth code with provider: oauth2: cannot fetch token: 401 Unauthorized\nResponse:
{\"error\":\"access_denied\",\"error_description\":\"Unauthorized\"}".

Problem: This error can occur if either the oidc_client_id or oidc_client_secret value does match the value from Auth0 when authenticating using the OIDC auth method.

Troubleshooting steps:

Check the AUTH0_CLIENT_ID and AUTH0_CLIENT_SECRET environment variables.
```
echo ID $AUTH0_CLIENT_ID "\n"SECRET $AUTH0_CLIENT_SECRET
```
Verify they match the values provided from the Auth0 portal.

If the values are valid, verify the OIDC configuration passed to Vault are using the correct environment variables.

$ vault write auth/oidc/config \
      oidc_discovery_url="https://$AUTH0_DOMAIN/" \
      oidc_client_id="$AUTH0_CLIENT_ID" \
      oidc_client_secret="$AUTH0_CLIENT_SECRET" \
      default_role="reader"

Help and reference

Enable an auth method

OIDC authentication with Okta

Challenge

Solution

Prerequisites

Auth0 Account

Policy requirements

Lab Setup

Get Auth0 credentials

Create Vault policies

Enable OIDC auth method

Login with OIDC

Unauthorized Redirect URI Error

Create an Auth0 group

Create an external Vault group

Authenticate with kv-mgr role

Leveraging Social Accounts

Troubleshooting

Troubleshooting steps:

Troubleshooting steps:

Troubleshooting steps:

Help and reference