Joint Orchestration of Network Function Chains and Distributed Cloud Applications

Pishahang is a framework consolidated from state-of-the-art NFV and Cloud management and orchestration tools and technologies to provide orchestration for services deployed across multiple technological domains.

Useful Links

Papers:

• H. R. Kouchaksaraei, T. Dierich and H. Karl, Pishahang: Joint Orchestration of Network Function Chains and Distributed Cloud Applications, 2018 4th IEEE Conference on Network Softwarization and Workshops (NetSoft), Montreal, QC, 2018, pp. 344-346. DOI: 10.1109/NETSOFT.2018.8460134

• H. R. Kouchaksaraei and H. Karl. 2019. Service Function Chaining Across OpenStack and Kubernetes Domains. In Proceedings of the 13th ACM International Conference on Distributed and Event-based Systems (DEBS '19). ACM, New York, NY, USA, 240-243. DOI: https://doi.org/10.1145/3328905.3332505

Demo videos:

• Service deployment: https://www.youtube.com/watch?v=vd0vaP8jfNs&t=4s

• Service chaining support: https://www.youtube.com/watch?v=zCci3-2gU44&t=22s

Usage

Full documentation can be found here

Please refer to this wikipage for installing Pishahang, Devstack, and Kubernetes.

Service Deployment

This section will give a step-by-step guide how to deploy a service using the service platform.

Connect OpenStack and Kubernetes to Pishahang

This step assumes that you have connected to your Kubernetes cluster before using the kubectl command line tool.

• Open your browser and navigate to http://public_ip
• Open the "WIM/VIM Settings" tab
• Add a new WAN adaptor
  • Select "Mock" WIM vendor
  • Enter any WIM name, WIM address, username and password
  • Confirm by clicking "SAVE"
• Add OpenStack VIM adaptor
  • Chose any VIM name
  • Select the WIM adaptor you just created, enter any country and city
  • Select "Heat" VIM vendor
  • Fill in the compute and network configuration fields accordingly
• Add Kubernetes VIM adaptor
  • Chose any VIM name
  • Select the WIM adaptor you just created, enter any country and city
  • Select "Kubernetes" VIM vendor
    • Enter the IP address of the Kubernetes master node
    • Create a Kubernetes service token with sufficient privileges (read & write). An existing service token can be retrieved by running the "kubectl describe secret" command.
    • Copy and paste the cluster’s CA certificate. The certificate must be PEM and Base64 encoded. The certificate is usually stored in the kubctl config located at ~/.kube/config

Enable Kubernetes monitoring

To enable monitoring for a Kubernetes cluster, a new Prometheus scrape job is needed. The reference config below works for common cluster setups, however, it might need to be adapted for special Kubernetes setups. Replace the placeholder credentials in the config with your cluster’s actual credentials. Now, add the scrape job to Prometheus by POSTing the configuration (transformed to JSON) to http://public_ip:9089/prometheus/configuration/jobs. To verify, open your browser and navigate to the Prometheus dashboard at http://public_ip:9090. If the metrics list shows entries starting with "container", the installation was successful.

- job_name: 'kubernetes-cadvisor'
  scheme: https
  tls_config:
    insecure_skip_verify: true
  basic_auth:
    username: username
    password: password
  kubernetes_sd_configs:
  - role: node
    api_server: https://kubernetes-master
    tls_config:
      insecure_skip_verify: true
    basic_auth:
      username: username
      password: password
  relabel_configs:
  - action: labelmap
    regex: __meta_kubernetes_node_label_(.+)
  - target_label: __address__
    replacement: kubernetes-master:443
  - source_labels: [__meta_kubernetes_node_name]
    regex: (.+)
    target_label: __metrics_path__
    replacement: /api/v1/nodes/${1}/proxy/metrics/cadvisor

Onboarding Descriptors

Push any descriptors using the corresponding catalogue endpoint:

• For CSDs: http://public_ip:4002/catalogues/api/v2/csds
• For COSDs: http://public_ip:4002/catalogues/api/v2/complex-services

Please find example CSDs and COSDs in the son-examples/complex-services folder.

Deploying a Service

• Open your browser and navigate to http://public_ip:25001
• Open the "Available Complex Services" tab
• Click the "Instantiate" button of the service you want to deploy
• Confirm the instantiate modal (ingress and egress can be empty)

Terminating a Service

• Open your browser and navigate to http://public_ip:25001
• Open the "Running Complex Services" tab
• Click the "Terminate" button of the service you want to stop

Lead Developer:

• Hadi Razzaghi Kouchaksaraei (https://github.com/hadik3r)

Contributors:

• bjoluc (https://github.com/bjoluc)
• Ashwin Prasad Shivarpatna Venkatesh (https://github.com/ashwinprasadme)
• Tobias Dierich (https://github.com/tobiasdierich)
• Marvin Illian (https://github.com/OrangeOnBlack)