Install Janssen on GKE#

System Requirements#

{% include "includes/cn-system-requirements.md" %}

Initial Setup#

Enable GKE API if not enabled yet.
If you are using Cloud Shell, you can skip to step 6.
Install gcloud.
Install kubectl using gcloud components install kubectl command.
Install Helm3.
Create cluster using a command such as the following example:
```
gcloud container clusters create janssen-cluster --num-nodes 2 --machine-type e2-standard-4 --zone us-west1-a
```
You can adjust num-nodes and machine-type as per your desired cluster size
Create jans namespace where our resources will reside
```
kubectl create namespace jans
```

Jans Installation using Helm#

Install Nginx-Ingress, if you are not using Istio ingress

helm repo add ingress-nginx https://kubernetes.github.io/ingress-nginx
helm repo add stable https://charts.helm.sh/stable
helm repo update
helm install nginx ingress-nginx/ingress-nginx

Create a file named override.yaml and add changes as per your desired configuration:

FQDN/domain is not registered:

Get the Loadbalancer IP:

kubectl get svc nginx-ingress-nginx-controller --output jsonpath='{.status.loadBalancer.ingress[0].ip}'

Add the following yaml snippet to your override.yaml file:

global:
    lbIp: #Add the Loadbalance IP from the previous command
    isFqdnRegistered: false

FQDN/domain is registered:

Add the following yaml snippet to your override.yaml file`:

global:
    lbIp: #Add the LoadBalancer IP from the previous command
    isFqdnRegistered: true
    fqdn: demoexample.jans.io #CHANGE-THIS to the FQDN used for Jans
nginx-ingress:
  ingress:
      path: /
      hosts:
      - demoexample.jans.io #CHANGE-THIS to the FQDN used for Jans
      tls:
      - secretName: tls-certificate
        hosts:
        - demoexample.jans.io #CHANGE-THIS to the FQDN used for Jans

LDAP/Opendj for persistence storage

Prepare cert and key for OpenDJ, for example:

openssl req -x509 -newkey rsa:2048 -sha256 -days 365 -nodes -keyout opendj.key -out opendj.crt -subj '/CN=demoexample.jans.io' -addext 'subjectAltName=DNS:ldap,DNS:opendj'

Extract the contents of OpenDJ cert and key files as base64 string:

OPENDJ_CERT_B64=$(base64 opendj.crt -w0)
OPENDJ_KEY_B64=$(base64 opendj.key -w0)

Add the following yaml snippet to your override.yaml file:

global:
  cnPersistenceType: ldap
  storageClass:
    provisioner: kubernetes.io/gce-pd
  opendj:
    enabled: true
config:
  configmap:
    # -- contents of OpenDJ cert file in base64-string
    cnLdapCrt: <OPENDJ_CERT_B64>
    # -- contents of OpenDJ key file in base64-string
    cnLdapKey: <OPENDJ_KEY_B64>

So if your desired configuration has no-FQDN and LDAP, the final override.yaml file will look something like that:

 global:
   cnPersistenceType: ldap
   lbIp: #Add the Loadbalancer IP from the previous command
   isFqdnRegistered: false
   storageClass:
     provisioner: kubernetes.io/gce-pd
   opendj:
     enabled: true
 config:
   configmap:
     # -- contents of OpenDJ cert file in base64-string
     cnLdapCrt: <OPENDJ_CERT_B64>
     # -- contents of OpenDJ key file in base64-string
     cnLdapKey: <OPENDJ_KEY_B64>
 nginx-ingress:
  ingress:
      path: /
      hosts:
      - demoexample.jans.io #CHANGE-THIS to the FQDN used for Jans
      tls:
      - secretName: tls-certificate
        hosts:
        - demoexample.jans.io #CHANGE-THIS to the FQDN used for Jans

Couchbase for pesistence storage

Add the following yaml snippet to your override.yaml file:

global:
  cnPersistenceType: couchbase

config:
  configmap:
    # -- The prefix of couchbase buckets. This helps with separation in between different environments and allows for the same couchbase cluster to be used by different setups of Janssen.
    cnCouchbaseBucketPrefix: jans
    # -- Couchbase certificate authority string. This must be encoded using base64. This can also be found in your couchbase UI Security > Root Certificate. In mTLS setups this is not required.
    cnCouchbaseCrt: SWFtTm90YVNlcnZpY2VBY2NvdW50Q2hhbmdlTWV0b09uZQo=
    # -- The number of replicas per index created. Please note that the number of index nodes must be one greater than the number of index replicas. That means if your couchbase cluster only has 2 index nodes you cannot place the number of replicas to be higher than 1.
    cnCouchbaseIndexNumReplica: 0
    # -- Couchbase password for the restricted user config.configmap.cnCouchbaseUser that is often used inside the services. The password must contain one digit, one uppercase letter, one lower case letter and one symbol
    cnCouchbasePassword: P@ssw0rd
    # -- The Couchbase super user (admin) username. This user is used during initialization only.
    cnCouchbaseSuperUser: admin
    # -- Couchbase password for the superuser config.configmap.cnCouchbaseSuperUser that is used during the initialization process. The password must contain one digit, one uppercase letter, one lower case letter and one symbol
    cnCouchbaseSuperUserPassword: Test1234#
    # -- Couchbase URL. This should be in FQDN format for either remote or local Couchbase clusters. The address can be an internal address inside the kubernetes cluster
    cnCouchbaseUrl: cbjanssen.default.svc.cluster.local
    # -- Couchbase restricted user
    cnCouchbaseUser: janssen

PostgreSQL for persistence storage

In a production environment, a production grade PostgreSQL server should be used such as Cloud SQL

For testing purposes, you can deploy it on the GKE cluster using the following command:

helm install my-release --set auth.postgresPassword=Test1234#,auth.database=jans -n jans oci://registry-1.docker.io/bitnamicharts/postgresql

Add the following yaml snippet to your override.yaml file:

global:
  cnPersistenceType: sql
config:
  configmap:
    cnSqlDbName: jans
    cnSqlDbPort: 5432
    cnSqlDbDialect: pgsql
    cnSqlDbHost: my-release-postgresql.jans.svc
    cnSqlDbUser: postgres
    cnSqlDbTimezone: UTC
    cnSqldbUserPassword: Test1234#

MySQL for persistence storage

In a production environment, a production grade MySQL server should be used such as Cloud SQL

For testing purposes, you can deploy it on the GKE cluster using the following command:

helm install my-release --set auth.rootPassword=Test1234#,auth.database=jans -n jans oci://registry-1.docker.io/bitnamicharts/mysql

Add the following yaml snippet to your override.yaml file:

global:
  cnPersistenceType: sql
config:
  configmap:
    cnSqlDbName: jans
    cnSqlDbPort: 3306
    cnSqlDbDialect: mysql
    cnSqlDbHost: my-release-mysql.jans.svc
    cnSqlDbUser: root
    cnSqlDbTimezone: UTC
    cnSqldbUserPassword: Test1234#

So if your desired configuration has FQDN and MySQL, the final override.yaml file will look something like that:

global:
  cnPersistenceType: sql
  lbIp: "" #Add the LoadBalancer IP from previous command
  isFqdnRegistered: true
  fqdn: demoexample.jans.io #CHANGE-THIS to the FQDN used for Jans
nginx-ingress:
  ingress:
      path: /
      hosts:
      - demoexample.jans.io #CHANGE-THIS to the FQDN used for Jans
      tls:
      - secretName: tls-certificate
        hosts:
        - demoexample.jans.io #CHANGE-THIS to the FQDN used for Jans  
config:
  configmap:
    cnSqlDbName: jans
    cnSqlDbPort: 3306
    cnSqlDbDialect: mysql
    cnSqlDbHost: my-release-mysql.jans.svc
    cnSqlDbUser: root
    cnSqlDbTimezone: UTC
    cnSqldbUserPassword: Test1234#

Install Jans

After finishing all the tweaks to the override.yaml file, we can use it to install jans.

helm repo add janssen https://docs.jans.io/charts
helm repo update
helm install janssen janssen/janssen -n jans -f override.yaml

Configure Janssen#

You can use the TUI to configure Janssen components. The TUI calls the Config API to perform ad hoc configuration.

Last update: 2024-03-28
Created: 2022-05-18