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.. This work is licensed under a Creative Commons Attribution 4.0 International License.
.. http://creativecommons.org/licenses/by/4.0
.. Copyright 2020 NOKIA
CMPv2 certificate provider
==============================
General information
------------------------------
CMPv2 certificate provider is a part of certificate distribution infrastructure in ONAP.
The main functionality of the provider is to forward Certificate Signing Requests (CSRs) created by cert-mananger (https://cert-manager.io) to CertServiceAPI.
Additional information can be found on a dedicated page: https://wiki.onap.org/display/DW/CertService+and+K8s+Cert-Manager+integration.
By default CMPv2 provider is **disabled**. To enable it set following global helm value:
- CMPv2CertManagerIntegration = true
CMPv2 Issuer
------------------------------
In order to be able to request a certificate via CMPv2 provider a *CMPv2Issuer* CRD (Customer Resource Definition) instance has to be created.
It is important to note that the attribute *kind* has to be set to **CMPv2Issuer**, all other attributes can be set as needed.
**NOTE: a default instance of CMPv2Issuer is created when installing ONAP via OOM deployment.**
Here is a definition of a *CMPv2Issuer* provided with ONAP installation:
.. code-block:: yaml
apiVersion: certmanager.onap.org/v1
kind: CMPv2Issuer
metadata:
name: cmpv2-issuer-onap
namespace: onap
spec:
url: https://oom-cert-service:8443
healthEndpoint: actuator/health
certEndpoint: v1/certificate
caName: RA
certSecretRef:
name: cmpv2-issuer-secret
certRef: cmpv2Issuer-cert.pem
keyRef: cmpv2Issuer-key.pem
cacertRef: cacert.pem
Certificate enrolling
------------------------------
In order to request a certificate a K8s *Certificate* CRD (Custom Resource Definition) has to be created.
It is important that in the section issuerRef following attributes have those values:
- group: certmanager.onap.org
- kind: CMPv2Issuer
After *Certificate* CRD has been placed cert manager will send a *CSR* (Certificate Sign Request) to CA (Certificate Authority) via CMPv2 provider.
Signed certificate as well as trust anchor (CA root certificate) will be stored in the K8s *secret* specified in *Certificate* CRD (see secretName attribute).
By default certificates will be stored in PEM format. It is possible to get certificates also in JKS and P12 format - see example below - more information can be found on official cert manager page.
The following SANs types are supported: DNS names, IPs, URIs, emails.
Here is an example of a *Certificate*:
.. code-block:: yaml
apiVersion: cert-manager.io/v1
kind: Certificate
metadata:
name: certificate_name
namespace: onap
spec:
# The secret name to store the signed certificate
secretName: secret_name
# Common Name
commonName: certissuer.onap.org
subject:
organizations:
- Linux-Foundation
countries:
- US
localities:
- San-Francisco
provinces:
- California
organizationalUnits:
- ONAP
# SANs
dnsNames:
- localhost
- certissuer.onap.org
ipAddresses:
- "127.0.0.1"
uris:
- onap://cluster.local/
emailAddresses:
- onap@onap.org
# The reference to the CMPv2 issuer
issuerRef:
group: certmanager.onap.org
kind: CMPv2Issuer
name: cmpv2-issuer-onap
# Section keystores is optional and defines in which format certificates will be stored
# If this section is omitted than only PEM format will be present in the secret
keystores:
jks:
create: true
passwordSecretRef: # Password used to encrypt the keystore
name: certservice-key
key: key
pkcs12:
create: true
passwordSecretRef: # Password used to encrypt the keystore
name: certservice-key
key: key
Here is an example of generated *secret* containing certificates:
.. code-block:: yaml
Name: secret_name
Namespace: onap
Labels: <none>
Annotations: cert-manager.io/alt-names: localhost,certissuer.onap.org
cert-manager.io/certificate-name: certificate_name
cert-manager.io/common-name: certissuer.onap.org
cert-manager.io/ip-sans:
cert-manager.io/issuer-group: certmanager.onap.org
cert-manager.io/issuer-kind: CMPv2Issuer
cert-manager.io/issuer-name: cmpv2-issuer-onap
cert-manager.io/uri-sans:
Type: kubernetes.io/tls
Data
====
tls.crt: 1675 bytes <-- Certificate (PEM)
tls.key: 1679 bytes <-- Private Key (PEM)
truststore.jks: 1265 bytes <-- Trusted anchors (JKS)
ca.crt: 1692 bytes <-- Trusted anchors (PEM)
keystore.jks: 3786 bytes <-- Certificate and Private Key (JKS)
keystore.p12: 4047 bytes <-- Certificate and Private Key (P12)
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