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Chapter 2. Using the configuration API
The configuration tool exposes 4 endpoints that can be used to build, validate, bundle and deploy a configuration. The config-tool API is documented at https://github.com/quay/config-tool/blob/master/pkg/lib/editor/API.md. In this section, you will see how to use the API to retrieve the current configuration and how to validate any changes you make.
2.1. Retrieving the default configuration
If you are running the configuration tool for the first time, and do not have an existing configuration, you can retrieve the default configuration. Start the container in config mode:
$ sudo podman run --rm -it --name quay_config \ -p 8080:8080 \ registry.redhat.io/quay/quay-rhel8:v3.13.1 config secret
Use the config endpoint of the configuration API to get the default:
$ curl -X GET -u quayconfig:secret http://quay-server:8080/api/v1/config | jq
The value returned is the default configuration in JSON format:
{
"config.yaml": {
"AUTHENTICATION_TYPE": "Database",
"AVATAR_KIND": "local",
"DB_CONNECTION_ARGS": {
"autorollback": true,
"threadlocals": true
},
"DEFAULT_TAG_EXPIRATION": "2w",
"EXTERNAL_TLS_TERMINATION": false,
"FEATURE_ACTION_LOG_ROTATION": false,
"FEATURE_ANONYMOUS_ACCESS": true,
"FEATURE_APP_SPECIFIC_TOKENS": true,
....
}
}2.2. Retrieving the current configuration
If you have already configured and deployed the Quay registry, stop the container and restart it in configuration mode, loading the existing configuration as a volume:
$ sudo podman run --rm -it --name quay_config \ -p 8080:8080 \ -v $QUAY/config:/conf/stack:Z \ registry.redhat.io/quay/quay-rhel8:v3.13.1 config secret
Use the config endpoint of the API to get the current configuration:
$ curl -X GET -u quayconfig:secret http://quay-server:8080/api/v1/config | jq
The value returned is the current configuration in JSON format, including database and Redis configuration data:
{
"config.yaml": {
....
"BROWSER_API_CALLS_XHR_ONLY": false,
"BUILDLOGS_REDIS": {
"host": "quay-server",
"password": "strongpassword",
"port": 6379
},
"DATABASE_SECRET_KEY": "4b1c5663-88c6-47ac-b4a8-bb594660f08b",
"DB_CONNECTION_ARGS": {
"autorollback": true,
"threadlocals": true
},
"DB_URI": "postgresql://quayuser:quaypass@quay-server:5432/quay",
"DEFAULT_TAG_EXPIRATION": "2w",
....
}
}2.3. Validating configuration using the API
You can validate a configuration by posting it to the config/validate endpoint:
curl -u quayconfig:secret --header 'Content-Type: application/json' --request POST --data '
{
"config.yaml": {
....
"BROWSER_API_CALLS_XHR_ONLY": false,
"BUILDLOGS_REDIS": {
"host": "quay-server",
"password": "strongpassword",
"port": 6379
},
"DATABASE_SECRET_KEY": "4b1c5663-88c6-47ac-b4a8-bb594660f08b",
"DB_CONNECTION_ARGS": {
"autorollback": true,
"threadlocals": true
},
"DB_URI": "postgresql://quayuser:quaypass@quay-server:5432/quay",
"DEFAULT_TAG_EXPIRATION": "2w",
....
}
} http://quay-server:8080/api/v1/config/validate | jq
The returned value is an array containing the errors found in the configuration. If the configuration is valid, an empty array [] is returned.
2.4. Determining the required fields
You can determine the required fields by posting an empty configuration structure to the config/validate endpoint:
curl -u quayconfig:secret --header 'Content-Type: application/json' --request POST --data '
{
"config.yaml": {
}
} http://quay-server:8080/api/v1/config/validate | jqThe value returned is an array indicating which fields are required:
[
{
"FieldGroup": "Database",
"Tags": [
"DB_URI"
],
"Message": "DB_URI is required."
},
{
"FieldGroup": "DistributedStorage",
"Tags": [
"DISTRIBUTED_STORAGE_CONFIG"
],
"Message": "DISTRIBUTED_STORAGE_CONFIG must contain at least one storage location."
},
{
"FieldGroup": "HostSettings",
"Tags": [
"SERVER_HOSTNAME"
],
"Message": "SERVER_HOSTNAME is required"
},
{
"FieldGroup": "HostSettings",
"Tags": [
"SERVER_HOSTNAME"
],
"Message": "SERVER_HOSTNAME must be of type Hostname"
},
{
"FieldGroup": "Redis",
"Tags": [
"BUILDLOGS_REDIS"
],
"Message": "BUILDLOGS_REDIS is required"
}
]