Guideline for the installation of the REPOSITORYMANAGER service.

Introduction

This article describes the necessary steps for the installation of the REPOSITORYMANAGER service. In addition to the docker image deployment, the Kubernetes cluster and a cluster firewall need to be configured accordingly. Furthermore, you can operate multiple instances of the REPOSITORYMANAGER service.

After the successful installation, further configuration is necessary in order to connect SAP and yuuvis® Momentum.
>> Configurations for the REPOSITORYMANAGER Service

Deployment

The service is delivered as docker container image.
>>Version Tags Services

As of 2022 Summer, the installation via Helm chart is possible as well.
>> Installation Guide

For the deployment to the yuuvis® Momentum cluster, you need a deployment and a service script as shown in the example code blocks below. The parameters have to be adjusted according to your own cluster. However, please use the /working-dir path for the PersistentVolumeClaim.

apiVersion: v1
kind: Service
metadata:
  namespace: $NAMESPACE
  labels:
    app: yuuvis
    name: repositorymanager
    yuuvis: "true"
  name: repositorymanager
spec:
  ports:
    - name: "http"
      port: 80
      targetPort: 8010
  type: ClusterIP
  selector:
    name: repositorymanager

apiVersion: v1
kind: PersistentVolumeClaim
metadata:
  name: data-repositorymanager
  namespace: $NAMESPACE
spec:
  storageClassName: local-path
  volumeMode: Filesystem
  accessModes:
    - ReadWriteOnce
  resources:
    requests:
      storage: 2Gi
---
apiVersion: apps/v1
kind: Deployment
metadata:
  namespace: $NAMESPACE
  labels:
    app: yuuvis
    name: repositorymanager
  name: repositorymanager
spec:
  replicas: 1
  selector:
    matchLabels:
      name: repositorymanager
  template:
    metadata:
      labels:
        name: repositorymanager
    spec:
      containers:
        - name: repositorymanager
          image: docker.optimal-systems.org/team-kookaburra/$CI_PROJECT_NAME:commit-$CI_COMMIT_SHORT_SHA
          imagePullPolicy: Always
          env:
            - name: JAVA_OPTS
              value: -Xmx128m
            - name: SPRING_CLOUD_CONFIG_URI
              value: "http://configservice/config"
            - name: SPRING_PROFILES_ACTIVE
              value: prod,docker,kubernetes
          ports:
            - containerPort: 8010
          volumeMounts:
            - name: storage
              mountPath: /working-dir
      volumes:
        - name: storage
          persistentVolumeClaim:
            claimName: data-repositorymanager
      restartPolicy: Always
      imagePullSecrets:
        - name: osgitlab

Configuring the Kubernetes Cluster

The REPOSITORY-MANAGER service has to be accessible for the SAP system which is running outside the yuuvis® Momentum Kubernetes cluster. We recommend the usage of a loadbalancer of your cloud provider or the implementation of an Ingress controller. Alternatively, you could open the corresponding node port for the connection to the SAP system.

The following two sections provide an example configuration for both, the access via Ingress and via Node Port.

Note: If your tests fail due to problems with the ILM protocol, please disable CORS

• by configuring nginx.ingress.kubernetes.io/enable-cors: "false" in case you use Ingress controller or
• in the loadbalancer of your cloud provider.

Access via NGINX Ingress Controller

The following steps result in a configuration where the REPOSITORY-MANAGER service is accessible via NGINX Ingress controller from outside the Kubernetes cluster.

• Add the Helm repositories for the NGINX Ingress controller and for a certificate manager for automated TLS certificate management:

  helm repo add nginx-stable https://helm.nginx.com/stable
  helm repo add jetstack https://charts.jetstack.io
  helm repo update

• Install the certificate manager and the Ingress:

  helm install \
    cert-manager jetstack/cert-manager \
    --namespace cert-manager \
    --create-namespace \
    --version v1.8.0 \
    --set installCRDs=true
     
  helm install nginx-ingress nginx-stable/nginx-ingress --set rbac.create=true
   
  # Validate that nginx is running
  kubectl get pods --all-namespaces -l app=nginx-ingress-nginx-ingress

• Add the following ingress-repositorymanager.yaml file to the templates folder of the repositorymanager Helm chart. Adjust the values according to your installation.

  Example 'ingress-repositorymanager.yaml' configuration Expand source

  apiVersion: cert-manager.io/v1
  kind: Certificate
  metadata:
    name: repositorymanager.yourdns.net # Change value
  spec:
    secretName: repositorymanager-yourdns-net-cert # Change value
    dnsNames:
      - repositorymanager.yourdns.net # Change value
    issuerRef:
      group: cert-manager.io
      name: letsencrypt-prod
      kind: ClusterIssuer
  ---
  apiVersion: networking.k8s.io/v1
  kind: Ingress
  metadata:
    annotations:
      cert-manager.io/cluster-issuer: letsencrypt-prod
      ingress.kubernetes.io/ssl-redirect: "true"
      meta.helm.sh/release-name: repositorymanager
      meta.helm.sh/release-namespace: repositorymanagerwinter # Change value
      nginx.ingress.kubernetes.io/enable-cors: "false"
      nginx.ingress.kubernetes.io/force-ssl-redirect: "true"
      nginx.ingress.kubernetes.io/rewrite-target: /
    name: repositorymanager-ingress
  spec:
    rules:
      - host: repositorymanager.yourdns.net # Change value
        http:
          paths:
            - backend:
                service:
                  name: repositorymanager
                  port:
                    number: 80
              path: /
              pathType: ImplementationSpecific
    tls:
    - hosts:
        - repositorymanager.yourdns.net # Change value
      secretName: repositorymanager-yourdns-net-cert # Change value

If you want to operate multiple instances of REPOSITORY-MANAGER service, they have to run in separate namespaces each of them with an own Ingress controller.

Access via Node Port

The following steps result in a configuration where the REPOSITORY-MANAGER service is exposed via Node Port to be accessible from outside the Kubernetes cluster.

Expose the REPOSITORYMANAGER service via a Kubernetes Node port to the local network. In the example configuration shown in the code block below, the REPOSITORYMANAGER service will be accessible in the local network by the IP address CLUSTER_IP:30036.

kind: Service
apiVersion: v1
metadata:
 name: repositorymanager
 namespace: yuuvis
   app: yuuvis
   name: repositorymanager
   yuuvis: 'true'
spec:
 ports:
  - name: http
    protocol: TCP
    port: 80
    targetPort: 8010
    nodePort: 30036 # This should be unique value in range 30000-32767
 selector:
   name: repositorymanager
 type: NodePort

Configuring the Cluster Firewall

The REPOSITORYMANAGER service, more precisely the barcode functionality, needs access directly from the pod where it is connected to the SAP system. For this reason, a firewall entry needs to be added on cluster level to allow communication to the SAP system.

Provide the IP:port info of the SAP system that will have an RFC connection for the barcode functionality to work properly to the cluster administrator. The configurations have to be carried out on the KGS Administration Page that can be accessed via the following address: http://<host>/repositorymanager/cs/

The default port is 8010, the user name is admin, and the password is admin.

After logging in, you can change the login credentials via OSGi > Configuration > Application Framework Management Console:

Adjusting the Service Configuration

In case of a standard installation, the service configuration parameters are specified in the corresponding application.yml file and are set to reasonable defaults. Those default values can be overwritten by specifying different values in the repositorymanager-prod.yml configuration file. Especially, the parameters configuring the ActiveMQ connection have to be adjusted:

• spring.activemq.broker-url
• spring.activemq.user
• spring.activemq.password

Note: KGS/CS-Admins should limit the free access to SAP systems to ensure that only relevant SAP systems can store data for a certain tenant.

Parameters of the repositorymanager-prod.yml configuration file:

The following code block shows an example configuration.

repository-manager:
  barcode:
    cntType2docType: Image/TIFF=FAX|application/pdf=PDF
    default-docType: TIF
    
core:
  api:
    url: https://client.con.yuuvis.org
    username: root
    password: optimal
    tenant: default

spring:
  activemq:
    broker-url: tcp://repositorymanager-mq:61616
    user: admin
    password: admin

Multiple Instances of the REPOSITORYMANAGER Service

If you use an Ingress controller, just create additional instances in separate namespaces with an own Ingress controller for each of them.

The following example deployment process is intended to explain the usage of multiple REPOSITORYMANAGER service instances exposed via Node port.

To achieve multi-tenancy, an independent instance of the REPOSITORYMANAGER service needs to be deployed for each individual tenant. The same service artifact can be used. In general, the following principles apply:

• Each instance should have its own ActiveMQ pod, distributed as separate image.
• Each pair of REPOSITORYMANAGER service and ActiveMQ instances should be deployed into its own namespace, have its own ports and profile configuration (default is prod).
• Each pair of REPOSITORYMANAGER service and ActiveMQ must have its own tenant.

Namespaces, service ports and profiles should be specified in the deployment script. The following sections describe the required configuration steps. All scripts are applied via the command:

kubectl apply - f <filename>

Preparation

Decide on the namespace, and node ports to be used (one port for the REPOSITORYMANAGER service and two ports for the repositorymanager-mq service) as well as the profile in which the application will run (this determines the naming of the configuration file). For this example, the namespace will be repositorymanager-1, the ports are 30000 for the REPOSITORYMANAGER service, 30001 and 30002 for the ActiveMQ and the profile will be instance1. The cluster should use the repositorymanager app schema. The tenant to be used by the REPOSITORYMANAGER service should be created and configured to use it as described above for the configuration of a single instance.

Namespace

Create the namespace using the following YML script:

apiVersion: v1
kind: Namespace
metadata:
  name: repositorymanager-1 # This is an example value that has to be replaced by the name of your namespace you want to use for the additional repositorymanager service instance.

ActiveMQ service

Deploy the repositorymanager-mq pod for ActiveMQ using the following two YML scripts:

apiVersion: apps/v1
kind: Deployment
metadata:
  namespace: repositorymanager-1 # Change value to the namespace specified in the namespace script before.
  name: repositorymanager-mq
  labels:
    app: yuuvis
    name: repositorymanager-mq
spec:
  replicas: 1
  selector:
    matchLabels:
      name: repositorymanager-mq
  template:
    metadata:
      labels:
        name: repositorymanager-mq
    spec:
      containers:
        - image: docker.yuuvis.org/<image> # Change value
          name: repositorymanager-mq
          imagePullPolicy: Always
      restartPolicy: Always
      imagePullSecrets:
        - name: changeme # Change value

Note: This is an example script which requires the a specific secret to be present in the same namespace. Different clusters might require some changes.

apiVersion: v1
kind: Service
metadata:
  namespace: repositorymanager-1
  name: repositorymanager-mq
  labels:
    app: yuuvis
    name: repositorymanager-mq
spec:
  selector:
    name: repositorymanager-mq
  ports:
    - name: dashboard
      port: 8161
      nodePort: 30001
    - name: openwire
      port: 61616
      nodePort: 30002
  type: NodePort

Note: The ActiveMQ service exposes two ports, one to access the web admin page, internally on port 8161 and externally on 30001, the other to access the ActiveMQ itself, internally on port 61616 and externally on 30002.

Repositorymanager service

Deploy the repositorymanager service using the following two YML scripts:

apiVersion: v1
kind: PersistentVolumeClaim
metadata:
  name: data-repositorymanager
  namespace: repositorymanager-1
spec:
  storageClassName: local-path
  volumeMode: Filesystem
  accessModes:
    - ReadWriteOnce
  resources:
    requests:
      storage: 10Gi
---
apiVersion: apps/v1
kind: Deployment
metadata:
  namespace: repositorymanager-1
  labels:
    app: yuuvis
    name: repositorymanager
  name: repositorymanager
spec:
  replicas: 1
  selector:
    matchLabels:
      name: repositorymanager
  template:
    metadata:
      labels:
        name: repositorymanager
    spec:
      containers:
        - name: repositorymanager
          image: docker.optimal-systems.org/team-kookaburra/repositorymanager-momentum:commit-2d346b0e
          imagePullPolicy: Always
          env:
            - name: JAVA_OPTS
              value: -Xmx128m
            - name: SPRING_CLOUD_CONFIG_URI
              value: "http://configservice.yuuvis/config"
            - name: SPRING_PROFILES_ACTIVE
              value: instance1,docker,kubernetes
          ports:
            - containerPort: 8010
          volumeMounts:
            - name: storage
              mountPath: /working-dir
      volumes:
        - name: storage
          persistentVolumeClaim:
            claimName: data-repositorymanager
      restartPolicy: Always
      imagePullSecrets:
        - name: osgitlab

Note: This script uses the image from OS GitLab which requires the osgitlab secret to be present in the same namespace. Different clusters might require some changes. Additionally, the environment parameter SPRING_CLOUD_CONFIG_URI should point to the CONFIGSERVICE of the specific cluster. The SPRING_PROFILES_ACTIVE environment variable should contain the docker and kubernetes profiles as well as the service profile dedicated to that instance, in this case instance1.

apiVersion: v1
kind: Service
metadata:
  namespace: repositorymanager-1
  labels:
    app: yuuvis
    name: repositorymanager
    yuuvis: "true"
  name: repositorymanager
spec:
  ports:
    - name: "http"
      port: 80
      targetPort: 8010
      nodePort: 30000
  type: NodePort
  selector:
    name: repositorymanager

Note: The REPOSITORYMANAGER service exposes one port to allow internal access via port 8010 and external access via port 30000.

Configuration

Use the CONFIGSERVICE of the cluster to create the repositorymanager-instance1.yml file. This file contains the configuration for the service instance running with the profile instance1.

The following code block shows an example for the configuration:

core:
  api:
    url: http://client.yuuvis
    username: root
    password: optimal
    tenant: instance1tenant

spring:
  activemq:
    broker-url: tcp://repositorymanager-mq:61616

The tenant name as well as credentials to access the yuuvis® Momentum system are provided as well as the URLs to access the system and ActiveMQ.

Once the configuration is created, the REPOSITORYMANAGER service should be restarted to apply the changes.

Access

Once the service is deployed and configured, a reverse proxy should be created to allow two-way communication between the REPOSITORYMANAGER service and SAP. This will also allow access to the KGS admin panel for service configuration.

Summary

If you are done with the installation process described in this guideline, the next step will be the proper configuration of yuuvis® Momentum and the SAP system.