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Requirements from the downstream dependencies

AAI

Data needed

• vGMuxInfra (run the vcpe flows that create the vGMuxInfra)
• list of Cloud regions, one of which should have the vGMuxInfra

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• objective function (distance) 
• colocation constraint 

HAS

OSDF 

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Requirements for Functional Features

HPA

• upload HPA policies into policy framework

Capacity checks

• upload Capacity check policy into policy framework

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• Deploy OOF
  • HEAT: 
    1. Go to the OOF VM
    2. Run /opt/oof_vm_init.sh - this will pull the docker images and install OSDF + HAS, and perform the required configurations to pass the healthcheck. 
  • OOM:
    • 
      
• populate the cloud region data into AAI
• upload the policies into policy framework 

Run the vcpe flows that create the vGMuxInfra

vCPE use case standalone testing on a single machine

Goal: Running the vCPE use case of the Beijing release of ONAP in a local setup, with minimal hardware and software requirements.
The work should be done in the ONAP MUSIC and ONAP HAS repositories with tag 2.0.0-ONAP.

Prerequisites

1. Install Docker CE, an example tutorial can be found here.

2. Make local copies of the HAS and MUSIC repos

   Code Block
   language bash title HAS and MUSIC install
   $ cd "your workspace" $ git clone https://gerrit.onap.org/r/music $ cd music $ git checkout 2.0.0-ONAP $ cd ../ $ git clone https://gerrit.onap.org/r/optf/has $ cd has $ git checkout 2.0.0-ONAP

3. (Optional) Install Insomnia REST API client for handling REST requests. Some prepared requests and variables are available can be imported to Insomnia. Importable to Insomnia: 

   View file
   name vCPE-use-case-2.0.0-ONAP.json height 250

4. (Optional) For advanced debugging of the inter-component communication use Wireshark

Installation and Configuration

1. Build and start A&AI simulator

   Code Block
   language bash
   $ cd ~/has/conductor/conductor/tests/functional/simulators $ ./build_aaisim.sh $ ./run_aaisim.sh

   Note: DNS name resolution issue may arise during building the simulator, because it needs the **web** Python package. TBD: Provide more detailed instructions. How does one there is an issues? what can one do about it?

2. Verify A&AI Simulator (Hint: in examples, 0.0.0.0 is IPAddress of A&AI container as per $ docker container ls)
   1. $ docker container ls
   2. expected result: image names should include: aaisim
   3. $ curl http://0.0.0.0:8081/healthcheck
   4. expected result: {"status": "success"}
   5. $ curl http://0.0.0.0:8081/aai/v13/cloud-infrastructure/cloud-regions/
   6. expected result: {"cloud-region": [{"group-assignments": ...much more...
3. Build and start MUSIC
   1. Configure access to MUSIC:

   2. Edit music/distribution/dockermusic/music.sh to change user/password:

      Code Block
      language bash
      ```text -CASS_USERNAME=cassandra1 -CASS_PASSWORD=cassandra1 +CASS_USERNAME=conductor +CASS_PASSWORD=c0nduct0r ```

   3. Edit music/distribution/dockermusic/properties/music.properties to change user/password:

      Code Block
      language bash
      ```text -cassandra.user=cassandra1 -cassandra.password=cassandra1 +cassandra.user=conductor +cassandra.password=c0nduct0r ```

   4. Build and start MUSIC containers

      Code Block
      language bash
      $ cd ~//music/distribution/dockermusic $ ./music.sh start

   5. Verify MUSIC components
      1. $ docker container ls
      2. expected result: image names should include: music-tomcat, music-zk, music-war, music-db
4. Build and Start HAS
   1. Configure HAS
      1. Edit has/conductor.conf

      2. search for [music_api]

         
         

         Code Block
         language bash
         ```text -server_url = http://localhost:8080/MUSIC/rest/v2 +server_url = http://<<IP address of 'music-tomcat' container>>:8080/MUSIC/rest/v2 ```

      3. Set the replication_factor to 1. (In the local installation MUSIC runs in a single instance, if this value is higher MUSIC requests with atomic consistency will fail with error message "Exception thrown while doing the critical put, check sanctity of the row/conditions:\nnull")
      4. Search for [aai]

         
         

         Code Block
         language bash
         ```text -server_url = https://aai.api.simpledemo.onap.org:8443/aai +server_url = http://<<IP address of 'aaisim' container>>:8081/aai ```

      5. Hint: find IPAddress of containers via:
         
         1. $ docker container ls
         2. look at first term in PORTS column
5. Onboard the HAS "conductor" application into MUSIC, 

   1. E.g.:

      Code Block
      language bash
      $ curl -X POST -H 'Content-Type: application/json' \ -d '{"appname" : "conductor","userId": "conductor","password": "c0nduct0r","isAAF": false}' \ 0.0.0.0:8080/MUSIC/rest/v2/admin/onboardAppWithMusic

   2. expected result: {"Generated AID":"2895db7e-2746-426a-822f-80c367161c65","Success":"Your application conductor has been onboarded with MUSIC."}
6. Start the HAS containers
   1. $ cd ~/has
   2. $ ./run-dockers.sh
7. Verify HAS components
   1. $ docker container ls
   2. expected result: image names should include: data, reservation, solver, api, controller
8. At this moment a $ docker ps or $ docker container ls commands should have an output similar to the following
   1. Example output

   2. Code Block

      CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES d140b3aa2590 nexus3.onap.org:10003/onap/optf-has:latest "python /usr/local/b…" 13 minutes ago Up 13 minutes 8091/tcp data a64620643678 nexus3.onap.org:10003/onap/optf-has:latest "python /usr/local/b…" 13 minutes ago Up 13 minutes 8091/tcp reservation 343c987ee6d0 nexus3.onap.org:10003/onap/optf-has:latest "python /usr/local/b…" 13 minutes ago Up 13 minutes 8091/tcp solver ee3ebd3ef924 nexus3.onap.org:10003/onap/optf-has:latest "python /usr/local/b…" 13 minutes ago Up 13 minutes 0.0.0.0:8091->8091/tcp api 47ed0c49a6ae nexus3.onap.org:10003/onap/optf-has:latest "python /usr/local/b…" 13 minutes ago Up 13 minutes 8091/tcp controller 140da6ee2808 tomcat:8.5 "catalina.sh run" 36 minutes ago Up 36 minutes 0.0.0.0:8080->8080/tcp music-tomcat 15553a52e3ae zookeeper:3.4 "/docker-entrypoint.…" 36 minutes ago Up 36 minutes 0.0.0.0:2181->2181/tcp, 0.0.0.0:2888->2888/tcp, 0.0.0.0:3888->3888/tcp music-zk 08c89e0fff47 nexus3.onap.org:10001/onap/music/music:latest "tail -f /dev/null" 36 minutes ago Up 36 minutes music-war 3387e50c4135 nexus3.onap.org:10001/onap/music/cassandra_music:latest "docker-entrypoint.sh" 36 minutes ago Up 36 minutes 0.0.0.0:7000-7001->7000-7001/tcp, 0.0.0.0:7199->7199/tcp, 0.0.0.0:9042->9042/tcp, 0.0.0.0:9160->9160/tcp music-db 9cafc8ddfdd1 aaisim "/bin/sh -c 'python …" 42 minutes ago Up 42 minutes 0.0.0.0:8081->8081/tcp aaisim

Running

1. Send vCPE homing template to HAS, E.g.

   1. $ curl -X POST --user admin1:plan.15 -H 'Content-Type: application/json' \
      -d @homing.json localhost:8091/v1/plans

   2. Hint: homing.json may be created by conjoining 

      Code Block
      { "name": "vCPE homing Beijing 2.0.0-ONAP", "template": <<HAS Homing Specification (R')>> }

      where HAS Homing Specification (R') = https://wiki.onap.org/display/DW/vCPE+Homing+Use+Case

   3. Hint: for username:password (--user above) see ~/conductor.conf, conductor_api section

2. RESOLVED: ISSUE_1: At this point a request fails with an error and the following message is returned for the homing request:

   1. After a 5 mins long timeout, the HAS api component replies back with error:

   2. Code Block
      language js
      { "error_message": { "explanation": "Unable to create Plan.", "code": 500, "error": { "message": "The server has either erred or is incapable of performing the requested operation.", "type": "HTTPInternalServerError" }, "title": "Internal Server Error" } }

   3. The underlying communication can be observed by capturing network traffic on the docker bridges by Wireshark. The communication is stuck (which causes the timeout at the api component) after a faulty MUSIC reply:

      1. Request to MUSIC sent by the controller: PUT /MUSIC/rest/v2/keyspaces/conductor_rpc/tables/controller/rows?id=<<Some UUID>>

         1. This request is a database primitive of the MUSIC API which modifies a row identified by <<Some UUID>> in table *controller*  of keyspace *conductor_rpc*. The data of the new database entry is delivered in the HTTP request body (not included here), which can be captured by Wireshark observing the communication between the controller HAS component and MUSIC.

      2. MUSIC's reply: "Exception thrown while doing the critical put, check sanctity of the row/conditions:\nnull"

      3. The produced HTTP stream between `controller` and MUSIC captured with Wireshark:

         View file
         name HAS-MUSIC consitency-atomic.txt height 250

3. ISSUE_2: Controller - MUSIC interaction fails with "Customer ID not specified for demand vGMuxInfra". This error message can be accessed by capturing HTTP traffic on the docker bridge created for the HAS components. Even though a HTTP 200 OK message is sent back to the homing template vCPE request initiator's side (either the Insomnia REST client or the curl command), the placement does not finish successfully.
   

Contact

Please if you have anything to add to or ask about this tutorial, contact me: balazs.nemeth__AT__tmit.bme.hu