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Chapter 2. Red Hat Quay configuration disclaimer

With both standalone and Operator-based deployments of Red Hat Quay certain features and configuration parameters are not actively used or implemented. As a result, feature flags, such as those that enable or disable certain features, and configuration parameters that are not explicitly documented or requested for documentation by Red Hat Support, should only be modified with caution. Unused features or parameters might not be fully tested, supported, or compatible with Red Hat Quay. Modifying unused features parameters might lead to unexpected issues or disruptions with your deployment.

For information about configuring Red Hat Quay in standalone deployments, see Advanced Red Hat Quay configuration

For information about configuring Red Hat Quay Operator deployments, see Configuring Red Hat Quay on OpenShift Container Platform

2.1. Configuration updates for Red Hat Quay 3.12

The following sections detail new configuration fields added in Red Hat Quay 3.12.

2.1.1. Registry auto-pruning configuration fields

The following configuration fields have been added to Red Hat Quay auto-pruning feature:

Field	Type	Description
NOTIFICATION_TASK_RUN_MINIMUM_INTERVAL_MINUTES	Integer	The interval, in minutes, that defines the frequency to re-run notifications for expiring images. Default: `300`
DEFAULT_NAMESPACE_AUTOPRUNE_POLICY	Object	The default organization-wide auto-prune policy.
.method: number_of_tags	Object	The option specifying the number of tags to keep.
.value: <integer>	Integer	When used with method: number_of_tags, denotes the number of tags to keep. For example, to keep two tags, specify `2`.
.method: creation_date	Object	The option specifying the duration of which to keep tags.
.value: <integer>	Integer	When used with creation_date, denotes how long to keep tags. Can be set to seconds (`s`), days (`d`), months (`m`), weeks (`w`), or years (`y`). Must include a valid integer. For example, to keep tags for one year, specify `1y`.
AUTO_PRUNING_DEFAULT_POLICY_POLL_PERIOD	Integer	The period in which the auto-pruner worker runs at the registry level. By default, it is set to run one time per day (one time per 24 hours). Value must be in seconds.

2.1.2. OAuth access token reassignment configuration field

The following configuration field has been added for reassigning OAuth access tokens:

Field	Type	Description
FEATURE_ASSIGN_OAUTH_TOKEN	Boolean	Allows organization administrators to assign OAuth tokens to other users.

Example OAuth access token reassignment YAML

# ...
FEATURE_ASSIGN_OAUTH_TOKEN: true
# ...

2.1.3. Vulnerability detection notification configuration field

The following configuration field has been added to notify users on detected vulnerabilities based on security level:

Field	Type	Description
NOTIFICATION_MIN_SEVERITY_ON_NEW_INDEX	String	Set minimal security level for new notifications on detected vulnerabilities. Avoids creation of large number of notifications after first index. If not defined, defaults to `High`. Available options include `Critical`, `High`, `Medium`, `Low`, `Negligible`, and `Unknown`.

Example image vulnerability notification YAML

NOTIFICATION_MIN_SEVERITY_ON_NEW_INDEX: High

2.1.4. OCI referrers API configuration field

The following configuration field allows users to list OCI referrers of a manifest under a repository by using the v2 API:

Field	Type	Description
FEATURE_REFERRERS_API	Boolean	Enables OCI 1.1’s referrers API.

Example OCI referrers enablement YAML

# ...
FEATURE_REFERRERS_API: true
# ...

2.1.5. Disable strict logging configuration field

The following configuration field has been added to address when external systems like Splunk or ElasticSearch are configured as audit log destinations but are intermittently unavailable. When set to True, the logging event is logged to the stdout instead.

Field	Type	Description
ALLOW_WITHOUT_STRICT_LOGGING	Boolean	When set to `True`, if the external log system like Splunk or ElasticSearch is intermittently unavailable, allows users to push images normally. Events are logged to the stdout instead. Overrides `ALLOW_PULLS_WITHOUT_STRICT_LOGGING` if set.

Example strict logging YAML

# ...
ALLOW_WITHOUT_STRICT_LOGGING: True
# ...

2.1.6. Notification interval configuration field

The following configuration field has been added to enhance Red Hat Quay notifications:

Field	Type	Description
NOTIFICATION_TASK_RUN_MINIMUM_INTERVAL_MINUTES	Integer	The interval, in minutes, that defines the frequency to re-run notifications for expiring images. By default, this field is set to notify Red Hat Quay users of events happening every 5 hours.

Example notification re-run YAML

# ...
NOTIFICATION_TASK_RUN_MINIMUM_INTERVAL_MINUTES: 10
# ...

2.1.7. Clair indexing layer size configuration field

The following configuration field has been added for the Clair security scanner, which allows Red Hat Quay administrators to set a maximum layer size allowed for indexing.

Field	Type	Description
SECURITY_SCANNER_V4_INDEX_MAX_LAYER_SIZE	String	The maximum layer size allowed for indexing. If the layer size exceeds the configured size, the Red Hat Quay UI returns the following message: `The manifest for this tag has layer(s) that are too large to index by the Quay Security Scanner`. The default is `8G`, and the maximum recommended is `10G`. Example: `8G`

2.2. Editing the configuration file

To deploy a standalone instance of Red Hat Quay, you must provide the minimal configuration information. The requirements for a minimal configuration can be found in "Red Hat Quay minimal configuration."

After supplying the required fields, you can validate your configuration. If there are any issues, they will be highlighted.

For changes to take effect, the registry must be restarted.

2.3. Location of configuration file in a standalone deployment

For standalone deployments of Red Hat Quay, the config.yaml file must be specified when starting the Red Hat Quay registry. This file is located in the configuration volume. For example, the configuration file is located at $QUAY/config/config.yaml when deploying Red Hat Quay by the following command:

$ sudo podman run -d --rm -p 80:8080 -p 443:8443 \
   --name=quay \
   -v $QUAY/config:/conf/stack:Z \
   -v $QUAY/storage:/datastorage:Z \
   registry.redhat.io/quay/quay-rhel8:v3.13.1

2.4. Minimal configuration

The following configuration options are required for a standalone deployment of Red Hat Quay:

Server hostname
HTTP or HTTPS
Authentication type, for example, Database or Lightweight Directory Access Protocol (LDAP)
Secret keys for encrypting data
Storage for images
Database for metadata
Redis for build logs and user events
Tag expiration options

2.4.1. Sample minimal configuration file

The following example shows a sample minimal configuration file that uses local storage for images:

AUTHENTICATION_TYPE: Database
BUILDLOGS_REDIS:
    host: quay-server.example.com
    password: strongpassword
    port: 6379
    ssl: false
DATABASE_SECRET_KEY: 0ce4f796-c295-415b-bf9d-b315114704b8
DB_URI: postgresql://quayuser:quaypass@quay-server.example.com:5432/quay
DEFAULT_TAG_EXPIRATION: 2w
DISTRIBUTED_STORAGE_CONFIG:
    default:
        - LocalStorage
        - storage_path: /datastorage/registry
DISTRIBUTED_STORAGE_DEFAULT_LOCATIONS: []
DISTRIBUTED_STORAGE_PREFERENCE:
    - default
PREFERRED_URL_SCHEME: http
SECRET_KEY: e8f9fe68-1f84-48a8-a05f-02d72e6eccba
SERVER_HOSTNAME: quay-server.example.com
SETUP_COMPLETE: true
TAG_EXPIRATION_OPTIONS:
    - 0s
    - 1d
    - 1w
    - 2w
    - 4w
    - 3y
USER_EVENTS_REDIS:
    host: quay-server.example.com
    port: 6379
    ssl: false

2.4.2. Local storage

Using local storage for images is only recommended when deploying a registry for proof of concept purposes.

When configuring local storage, storage is specified on the command line when starting the registry.

The following command maps a local directory, $QUAY/storage to the datastorage path in the container:

$ sudo podman run -d --rm -p 80:8080 -p 443:8443 \
   --name=quay \
   -v $QUAY/config:/conf/stack:Z \
   -v $QUAY/storage:/datastorage:Z \
   registry.redhat.io/quay/quay-rhel8:v3.13.1

2.4.3. Cloud storage

Storage configuration is detailed in the Image storage section. For some users, it might be useful to compare the difference between Google Cloud Platform and local storage configurations. For example, the following YAML presents a Google Cloud Platform storage configuration:

$QUAY/config/config.yaml

DISTRIBUTED_STORAGE_CONFIG:
    default:
        - GoogleCloudStorage
        - access_key: GOOGQIMFB3ABCDEFGHIJKLMN
          bucket_name: quay_bucket
          secret_key: FhDAYe2HeuAKfvZCAGyOioNaaRABCDEFGHIJKLMN
          storage_path: /datastorage/registry
          boto_timeout: 120 1
DISTRIBUTED_STORAGE_DEFAULT_LOCATIONS: []
DISTRIBUTED_STORAGE_PREFERENCE:
    - default

1: Optional. The time, in seconds, until a timeout exception is thrown when attempting to read from a connection. The default is 60 seconds. Also encompasses the time, in seconds, until a timeout exception is thrown when attempting to make a connection. The default is 60 seconds.

When starting the registry using cloud storage, no configuration is required on the command line. For example:

$ sudo podman run -d --rm -p 80:8080 -p 443:8443 \
   --name=quay \
   -v $QUAY/config:/conf/stack:Z \
   registry.redhat.io/quay/quay-rhel8:v3.13.1