Commit 16dfaf2a authored by Cédric OLIVIER's avatar Cédric OLIVIER
Browse files

Merge branch 'add-vault-variant' into 'main'

feat: add vault variant

See merge request to-be-continuous/docker-compose!23
parents 67183570 6a0ebe91
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@@ -420,3 +420,63 @@ Here are its parameters:
| `kics-enabled` / `DCMP_KICS_ENABLED` | Set to `true` to enable `kics`  | false |
| `kics-image` / `DCMP_KICS_IMAGE` | kics docker image | `docker.io/checkmarx/kics:latest`  |
| `kics-args` / `DCMP_KICS_ARGS` | kics scan [options and args](https://docs.kics.io/latest/commands/#scan_command_options) | `--ci` |


## Variants

### Vault variant

This variant allows delegating your secrets management to a [Vault](https://www.vaultproject.io/) server.

#### :warning: `DCMP_IMAGE` requirements

The Vault variant requires `curl` or `wget` to retrieve secrets from the Vault server.

As a result, when using the Vault variant, you'll have to select a `DCMP_IMAGE` that - in addition to `docker` - contains `curl` or `wget`.

#### Configuration

In order to be able to communicate with the Vault server, the variant requires the additional configuration parameters:

| Input / Variable | Description                            | Default value     |
| ----------------- | -------------------------------------- | ----------------- |
| `TBC_VAULT_IMAGE` | The [Vault Secrets Provider](https://gitlab.com/to-be-continuous/tools/vault-secrets-provider) image to use (can be overridden) | `registry.gitlab.com/to-be-continuous/tools/vault-secrets-provider:latest` |
| `vault-base-url` / `VAULT_BASE_URL` | The Vault server base API url          | **must be defined** |
| `vault-oidc-aud` / `VAULT_OIDC_AUD` | The `aud` claim for the JWT | `$CI_SERVER_URL` |
| :lock: `VAULT_ROLE_ID`   | The [AppRole](https://www.vaultproject.io/docs/auth/approle) RoleID | _none_ |
| :lock: `VAULT_SECRET_ID` | The [AppRole](https://www.vaultproject.io/docs/auth/approle) SecretID | _none_ |

By default, the variant will authentifacte using a [JWT ID token](https://docs.gitlab.com/ci/secrets/id_token_authentication/). To use [AppRole](https://www.vaultproject.io/docs/auth/approle) instead the `VAULT_ROLE_ID` and `VAULT_SECRET_ID` should be defined as secret project variables.

#### Usage

Then you may retrieve any of your secret(s) from Vault using the following syntax:

```text
@url@http://vault-secrets-provider/api/secrets/{secret_path}?field={field}
```

With:

| Parameter                        | Description                            |
| -------------------------------- | -------------------------------------- |
| `secret_path` (_path parameter_) | this is your secret location in the Vault server |
| `field` (_query parameter_)      | parameter to access a single basic field from the secret JSON payload |

#### Example

```yaml
include:
  # main template
  - component: $CI_SERVER_FQDN/to-be-continuous/docker-compose/gitlab-ci-docker-compose@1.5.0
  # Vault variant
  - component: $CI_SERVER_FQDN/to-be-continuous/docker-compose/gitlab-ci-docker-compose-vault@1.5.0
    inputs:
      # audience claim for JWT
      vault-oidc-aud: "https://vault.acme.host"
      vault-base-url: "https://vault.acme.host/v1"

variables:
    # Secrets managed by Vault
    DCMP_PROD_SSH_PRIVATE_KEY: "@url@http://vault-secrets-provider/api/secrets/b7ecb6ebabc231/my-app/prod?field=ssh_key"
```
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@@ -231,5 +231,42 @@
        }
      ]
    }
  ],
  "variants": [
    {
      "id": "vault",
      "name": "Vault",
      "description": "Retrieve secrets from a [Vault](https://www.vaultproject.io/) server",
      "template_path": "templates/gitlab-ci-docker-compose-vault.yml",
      "variables": [
        {
          "name": "TBC_VAULT_IMAGE",
          "description": "The [Vault Secrets Provider](https://gitlab.com/to-be-continuous/tools/vault-secrets-provider) image to use",
          "default": "registry.gitlab.com/to-be-continuous/tools/vault-secrets-provider:latest",
          "advanced": true
        },
        {
          "name": "VAULT_BASE_URL",
          "description": "The Vault server base API url"
        },
        {
          "name": "VAULT_OIDC_AUD",
          "description": "The `aud` claim for the JWT",
          "default": "$CI_SERVER_URL"
        },
        {
          "name": "VAULT_ROLE_ID",
          "description": "The [AppRole](https://www.vaultproject.io/docs/auth/approle) RoleID",
          "mandatory": true,
          "secret": true
        },
        {
          "name": "VAULT_SECRET_ID",
          "description": "The [AppRole](https://www.vaultproject.io/docs/auth/approle) SecretID",
          "mandatory": true,
          "secret": true
        }
      ]
    }
  ]
}
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# =====================================================================================================================
# === Vault template variant
# =====================================================================================================================
spec:
  inputs:
    vault-base-url:
      description: The Vault server base API url
      default: ''
    vault-oidc-aud:
      description: The `aud` claim for the JWT
      default: $CI_SERVER_URL
---
variables:
  # variabilized vault-secrets-provider image
  TBC_VAULT_IMAGE: registry.gitlab.com/to-be-continuous/tools/vault-secrets-provider:latest
  # variables have to be explicitly declared in the YAML to be exported to the service
  VAULT_ROLE_ID: $VAULT_ROLE_ID
  VAULT_SECRET_ID: $VAULT_SECRET_ID
  VAULT_OIDC_AUD: $[[ inputs.vault-oidc-aud ]]
  VAULT_BASE_URL: $[[ inputs.vault-base-url ]]
  
.compose-base:
  services:
    - name: "$TBC_TRACKING_IMAGE"
      command: ["--service", "--port", "8082", "kubernetes", "9.0.2"]
    - name: "$TBC_VAULT_IMAGE"
      alias: "vault-secrets-provider"
      variables:
        SKIP_SSL: "false"
  variables:
    VAULT_JWT_TOKEN: "$VAULT_JWT_TOKEN"
    VAULT_CA_CERTS: |
      $DEFAULT_CA_CERTS
      $CUSTOM_CA_CERTS
  id_tokens:
    VAULT_JWT_TOKEN:
      aud: "$VAULT_OIDC_AUD"