Skip to content

Cert Manager

Overview#

Container image to manage X.509 certificates and crypto keys in Janssen Server. The container is designed to run as a one-time command (or Job in Kubernetes world).

Versions#

See Packages for available versions.

Environment Variables#

The following environment variables are supported by the container:

  • CN_CONFIG_ADAPTER: The config backend adapter, can be consul (default), kubernetes, google, or aws.
  • CN_CONFIG_CONSUL_HOST: hostname or IP of Consul (default to localhost).
  • CN_CONFIG_CONSUL_PORT: port of Consul (default to 8500).
  • CN_CONFIG_CONSUL_CONSISTENCY: Consul consistency mode (choose one of default, consistent, or stale). Default to stale mode.
  • CN_CONFIG_CONSUL_SCHEME: supported Consul scheme (http or https).
  • CN_CONFIG_CONSUL_VERIFY: whether to verify cert or not (default to false).
  • CN_CONFIG_CONSUL_CACERT_FILE: path to Consul CA cert file (default to /etc/certs/consul_ca.crt). This file will be used if it exists and CN_CONFIG_CONSUL_VERIFY set to true.
  • CN_CONFIG_CONSUL_CERT_FILE: path to Consul cert file (default to /etc/certs/consul_client.crt).
  • CN_CONFIG_CONSUL_KEY_FILE: path to Consul key file (default to /etc/certs/consul_client.key).
  • CN_CONFIG_CONSUL_TOKEN_FILE: path to file contains ACL token (default to /etc/certs/consul_token).
  • CN_CONFIG_KUBERNETES_NAMESPACE: Kubernetes namespace (default to default).
  • CN_CONFIG_KUBERNETES_CONFIGMAP: Kubernetes configmaps name (default to jans).
  • CN_CONFIG_KUBERNETES_USE_KUBE_CONFIG: Load credentials from $HOME/.kube/config, only useful for non-container environment (default to false).
  • CN_SECRET_ADAPTER: The secrets' adapter, can be vault (default), kubernetes, google, or aws.
  • CN_SECRET_VAULT_VERIFY: whether to verify cert or not (default to false).
  • CN_SECRET_VAULT_ROLE_ID_FILE: path to file contains Vault AppRole role ID (default to /etc/certs/vault_role_id).
  • CN_SECRET_VAULT_SECRET_ID_FILE: path to file contains Vault AppRole secret ID (default to /etc/certs/vault_secret_id).
  • CN_SECRET_VAULT_CERT_FILE: path to Vault cert file (default to /etc/certs/vault_client.crt).
  • CN_SECRET_VAULT_KEY_FILE: path to Vault key file (default to /etc/certs/vault_client.key).
  • CN_SECRET_VAULT_CACERT_FILE: path to Vault CA cert file (default to /etc/certs/vault_ca.crt). This file will be used if it exists and CN_SECRET_VAULT_VERIFY set to true.
  • CN_SECRET_VAULT_ADDR: URL of Vault (default to http://localhost:8200).
  • CN_SECRET_VAULT_NAMESPACE: Namespace used to access secrets (default to empty string).
  • CN_SECRET_VAULT_KV_PATH: Path to KV secrets engine (default to secret).
  • CN_SECRET_VAULT_PREFIX: Base prefix name used to build secret path (default to jans).
  • CN_SECRET_VAULT_APPROLE_PATH: Path to AppRole (default to approle).
  • CN_SECRET_KUBERNETES_NAMESPACE: Kubernetes namespace (default to default).
  • CN_SECRET_KUBERNETES_SECRET: Kubernetes secrets name (default to jans).
  • CN_SECRET_KUBERNETES_USE_KUBE_CONFIG: Load credentials from $HOME/.kube/config, only useful for non-container environment (default to false).
  • CN_SECRET_GOOGLE_SECRET_VERSION_ID: Google Secret Manager version ID (default to latest).
  • CN_SECRET_GOOGLE_SECRET_NAME_PREFIX: Prefix for Google Secret Manager name (default to jans).
  • CN_SECRET_GOOGLE_SECRET_MANAGER_PASSPHRASE: Passphrase for Google Secret Manager (default to secret).
  • CN_PERSISTENCE_TYPE: Persistence backend being used (one of ldap, couchbase, or hybrid; default to ldap).
  • CN_HYBRID_MAPPING: Specify data mapping for each persistence (default to "{}"). Note this environment only takes effect when CN_PERSISTENCE_TYPE is set to hybrid. See hybrid mapping section for details.
  • CN_LDAP_URL: Address and port of LDAP server (default to localhost:1636).
  • CN_LDAP_USE_SSL: Whether to use SSL connection to LDAP server (default to true).
  • CN_COUCHBASE_URL: Address of Couchbase server (default to localhost).
  • CN_COUCHBASE_USER: Username of Couchbase server (default to admin).
  • CN_COUCHBASE_CERT_FILE: Couchbase root certificate location (default to /etc/certs/couchbase.crt).
  • CN_COUCHBASE_PASSWORD_FILE: Path to file contains Couchbase password (default to /etc/jans/conf/couchbase_password).
  • CN_COUCHBASE_CONN_TIMEOUT: Connect timeout used when a bucket is opened (default to 10000 milliseconds).
  • CN_COUCHBASE_CONN_MAX_WAIT: Maximum time to wait before retrying connection (default to 20000 milliseconds).
  • CN_COUCHBASE_SCAN_CONSISTENCY: Default scan consistency; one of not_bounded, request_plus, or statement_plus (default to not_bounded).
  • CN_COUCHBASE_BUCKET_PREFIX: Prefix for Couchbase buckets (default to jans).
  • CN_COUCHBASE_TRUSTSTORE_ENABLE: Enable truststore for encrypted Couchbase connection (default to true).
  • CN_COUCHBASE_KEEPALIVE_INTERVAL: Keep-alive interval for Couchbase connection (default to 30000 milliseconds).
  • CN_COUCHBASE_KEEPALIVE_TIMEOUT: Keep-alive timeout for Couchbase connection (default to 2500 milliseconds).
  • CN_CONTAINER_METADATA: The name of scheduler to pull container metadata (one of docker or kubernetes; default to docker).
  • GOOGLE_APPLICATION_CREDENTIALS: Optional JSON file (contains Google credentials) that can be injected into container for authentication. Refer to https://cloud.google.com/docs/authentication/provide-credentials-adc#how-to for supported credentials.
  • GOOGLE_PROJECT_ID: ID of Google project.
  • CN_GOOGLE_SECRET_VERSION_ID: Janssen secret version ID in Google Secret Manager. Defaults to latest, which is recommended.
  • CN_GOOGLE_SECRET_NAME_PREFIX: Prefix for Janssen secret in Google Secret Manager. Defaults to jans. If left jans-secret secret will be created.
  • CN_GOOGLE_SECRET_MANAGER_PASSPHRASE: Passphrase for Janssen secret in Google Secret Manager. This is recommended to be changed and defaults to secret.
  • CN_GOOGLE_SPANNER_INSTANCE_ID: Google Spanner instance ID.
  • CN_GOOGLE_SPANNER_DATABASE_ID: Google Spanner database ID.
  • CN_SQL_DB_HOST: Hostname of the SQL database (default to localhost).
  • CN_SQL_DB_PORT: Port of the SQL database (default to 3306 for MySQL).
  • CN_SQL_DB_NAME: SQL database name (default to jans).
  • CN_SQL_DB_USER: User name to access the SQL database (default to jans).
  • CN_SQL_DB_DIALECT: Dialect name of the SQL (mysql for MySQL or pgsql for PostgreSQL; default to mysql).
  • CN_SQL_DB_TIMEZONE: Timezone used by the SQL database (default to UTC).
  • CN_SQL_DB_SCHEMA: Schema name used by SQL database (default to empty-string; if using MySQL, the schema name will be resolved as the database name, whereas in PostgreSQL the schema name will be resolved as "public").
  • CN_AWS_SECRETS_ENDPOINT_URL: The URL of AWS secretsmanager service (if omitted, will use the one in specified region).
  • CN_AWS_SECRETS_PREFIX: The prefix name of the secrets (default to jans).
  • CN_AWS_SECRETS_REPLICA_FILE: The location of file contains replica regions definition (if any). This file is mostly used in primary region. Example of contents of the file: [{"Region": "us-west-1"}].
  • AWS_DEFAULT_REGION: The default AWS Region to use, for example, us-west-1 or us-west-2.
  • AWS_SHARED_CREDENTIALS_FILE: The location of the shared credentials file used by the client (see https://docs.aws.amazon.com/cli/latest/userguide/cli-configure-files.html).
  • AWS_CONFIG_FILE: The location of the config file used by the client (see https://docs.aws.amazon.com/cli/latest/userguide/cli-configure-files.html).
  • AWS_PROFILE: The default profile to use, if any.

Usage#

Commands#

The following commands are supported by the container:

  • patch
  • prune

patch#

Updates X.509 certificates and/or crypto keys related to the service.

Usage: certmanager patch [OPTIONS] SERVICE

  Patch cert and/or crypto keys for the targeted service.

Options:
  --dry-run         Enable dryrun mode.
  --opts KEY:VALUE  Options for targeted service (can be set multiple times).
  -h, --help        Show this message and exit.

Global options:

  • --dry-run
  • --opts: service-dependent options, example: --opts interval:48

Supported services:

  1. web (nginx container or ingress)

    Load from existing or re-generate:

    • /etc/certs/jans_https.crt
    • /etc/certs/jans_https.key.

    Options:

    • source: from-files or empty string
    • valid-to: Validity length in days (default to 365)

  2. auth

    Re-generate:

    • /etc/certs/auth-keys.json
    • /etc/certs/auth-keys.jks

    Options:

    • interval: crypto keys expiration time (in hours)
    • push-to-container: whether to push auth-keys.jks and auth-keys.json to auth-server containers (default to true)
    • key-strategy: key selection strategy (choose one of OLDER, NEWER, FIRST; default to NEWER)
    • privkey-push-delay: delay time in seconds before pushing auth-keys.jks to auth containers (default to 0)
    • privkey-push-strategy: key selection strategy after auth-keys.jks is pushed to auth containers (choose one of OLDER, NEWER, FIRST; default to NEWER)
    • sig-keys: space-separated key algorithm for signing (default to RS256 RS384 RS512 ES256 ES384 ES512 PS256 PS384 PS512)
    • enc-keys: space-separated key algorithm for encryption (default to RSA1_5 RSA-OAEP)

prune#

Delete expired crypto keys (if any) related to the service.

Usage: certmanager prune [OPTIONS] SERVICE

  Cleanup expired crypto keys for the targeted service.

Options:
  --dry-run         Enable dryrun mode.
  --opts KEY:VALUE  Options for targeted service (can be set multiple times).
  -h, --help        Show this message and exit.

Global options:

  • --dry-run
  • --opts: service-dependent options, example: --opts interval:48

Supported services:

  1. auth

    Delete expired keys (if any) from the following files:

    • /etc/certs/auth-keys.json
    • /etc/certs/auth-keys.jks

    Options:

    • push-to-container: whether to push auth-keys.jks and auth-keys.json to auth containers (default to true)
    • sig-keys: space-separated key algorithm for signing (default to RS256 RS384 RS512 ES256 ES384 ES512 PS256 PS384 PS512)
    • enc-keys: space-separated key algorithm for encryption (default to RSA1_5 RSA-OAEP)

Examples#

Kubernetes CronJob example:

kind: CronJob
apiVersion: batch/v1beta1
metadata:
  name: auth-key-rotation
spec:
  schedule: "0 */48 * * *"
  concurrencyPolicy: Forbid
  jobTemplate:
    spec:
      template:
        spec:
          containers:
            - name: auth-key-rotation
              image: ghcr.io/janssenproject/jans/certmanager:1.1.4-1
              resources:
                requests:
                  memory: "300Mi"
                  cpu: "300m"
                limits:
                  memory: "300Mi"
                  cpu: "300m"
              envFrom:
                - configMapRef:
                    name: jans-config-cm
              args: ["patch", "auth", "--opts", "interval:48"]
          restartPolicy: Never

Hybrid mapping#

As per v1.0.1, hybrid persistence supports all available persistence types. To configure hybrid persistence and its data mapping, follow steps below:

  1. Set CN_PERSISTENCE_TYPE environment variable to hybrid

  2. Set CN_HYBRID_MAPPING with the following format:

    {
    "default": "<couchbase|ldap|spanner|sql>",
    "user": "<couchbase|ldap|spanner|sql>",
    "site": "<couchbase|ldap|spanner|sql>",
    "cache": "<couchbase|ldap|spanner|sql>",
    "token": "<couchbase|ldap|spanner|sql>",
    "session": "<couchbase|ldap|spanner|sql>",
}

    Example:

    {
    "default": "sql",
    "user": "spanner",
    "site": "ldap",
    "cache": "sql",
    "token": "couchbase",
    "session": "spanner",
}
Last update: 2024-08-19
Created: 2021-11-26