Page Comparison

Here's the list of requirements that need to be met at each of the components for the homing call from SO to succeed for the vCPE use case.

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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.

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

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

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

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Installation and Configuration

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Build and start A&AI simulator

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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.

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TBD: Provide more detailed instructions. How does one there is an issues? what can one do about it?

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Verify A&AI Simulator

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(Hint: in examples, 0.0.0.0 is IPAddress of A&AI container as per $ docker container ls)
1. $ docker container ls

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1. expected result: image names should include:

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1. aaisim

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1. $ curl http://0.0.0.0:8081/healthcheck

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1. expected result: {"status": "success"}

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1. $ curl http://0.0.0.0:8081/aai/v13/cloud-infrastructure/cloud-regions/

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1. expected result: {"cloud-region": [{"group-assignments": ...much more...

- Hint: in examples, 0.0.0.0 is IPAddress of A&AI container as per $ docker container ls

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Build and start MUSIC

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1. Configure access to MUSIC:

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1. Edit music/distribution/dockermusic/music.sh to change user/password:
  Code Block
  language bash
```text

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1. -CASS_USERNAME=cassandra1

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1. -CASS_PASSWORD=cassandra1

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1. +CASS_USERNAME=conductor

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1. +CASS_PASSWORD=c0nduct0r

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1. ```

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1. Edit music/distribution/dockermusic/properties/music.properties to change user/password:
  Code Block
  language bash
```text

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1. -cassandra.user=cassandra1

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1. -cassandra.password=cassandra1

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1. +cassandra.user=conductor

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1. +cassandra.password=c0nduct0r

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1. ```

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1. Build and start MUSIC containers

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

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1. $ ./music.sh start

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Verify MUSIC components

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1. 1. $ docker container ls

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1. 1. expected result: image names should include:

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1. 1. music-tomcat

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1. 1. , music-zk

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1. 1. , music-war

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1. 1. , music-db

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Build and Start HAS

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Configure HAS

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1. 1. Edit has/conductor.conf

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1. 1. search for [music_api]
    Code Block
    language bash
```text

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-server_url = http://localhost:8080/MUSIC/rest/v2

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+server_url = http://<<IP address of 'music-tomcat' container>>:8080/MUSIC/rest/v2

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1. 1. ```
  2. 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")
  3. Search for [aai]
    Code Block
    language bash
```text -server_url = https://aai.api.simpledemo.onap.org:8443/aai

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+server_url = http://<<IP address of 'aaisim' container>>:8081/aai

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1. 1. ```

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1. 1. Hint: find IPAddress of containers via:
    1. $ docker container ls

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1. 1. 1. look at first term in PORTS column

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Onboard the HAS "conductor" application into MUSIC,
1. E.g.:

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Code Block

language	bash

$ curl -X POST -H 'Content-Type: application/json' \

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-d '{"appname" : "conductor","userId": "conductor","password": "c0nduct0r","isAAF": false}' \

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0.0.0.0:8080/MUSIC/rest/v2/admin/onboardAppWithMusic

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1. expected result: {"Generated AID":"2895db7e-2746-426a-822f-80c367161c65","Success":"Your

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1. application conductor has been onboarded with MUSIC."}

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Start the HAS containers

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1. $ cd ~/has

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1. $ ./run-dockers.sh

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Verify HAS components

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1. $ docker container ls

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1. expected result: image names should include: data, reservation, solver, api, controller

At this moment a $ docker ps or $ docker container ls commands should have an output similar to the following

Example output

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

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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

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://lf-onap.atlassian.net/wiki/display/DW/vCPE+Homing+Use+Case
3. Hint: for username:password (--user above) see ~/conductor.conf, conductor_api section

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

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

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"
	}
}

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

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

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