Hadoop as a service with vRealize Automation

Question

Hello All,
I am looking for Serengeti documentation which can help me deploy different distributions of Hadoop using vRealize orchestrator. Can some one point me to the documentation / article / blog which can help me achieve this?
Scenario i am working on is  described below:
1. I have vRealize Automation configured in test environment.
2. BDE installed and configured with vCenter and vRealize Orchestrator.
3. Hadoop as a service configured in vRealize Automation with default workflows provided with BDE plugin.
4. When i try to deploy Hadoop cluster using vRealize Automation, there is no option to select another distribution.
Do i need another workflow to deploy different distribution or i can tweek some parameters in existing workflow to enable me to deploy different distributions? Has any one tried this?

Answer 1

You need to tweek your workflow to retrieve all the available distributions on the BDE Server by calling BDE REST API  https://<bde_server_ip>:8443/serengeti/api/distros .  Then in the workflow of creating a cluster, the json body should be like this :
{"name": "cluster_name", "distro": "the_distro_name", "type": "HDFS_MAPRED", "networkConfig": { "MGT_NETWORK": ["defaultNetwork"]} }
You can get the BDE REST API doc through the following steps.
     ssh to your Serengeti Management server in BDE vAPP.
     run  " /opt/serengeti/sbin/cfgrestschema on "
     then you can see the API doc in "http://<Serengeti Management Server IP>:8080/restschema/service?APPLICATION=BigDataExtensions"
Big Data Extensions uses Spring Security In-Memory Authentication for authentication and user management.
The Spring Security provides a default authentication URL that monitored by the authentication filter. To be authenticated, you must send a HTTP POST request to this URL with correct vc user name and password in the request body.
The authentication URL is:
https://hostname:8443/serengeti/j_spring_security_check
The HTTP request body is:
j_username=replace-with-your-vc-username&j_password=replace-with-your-vc-password
The Content-Type header in the HTTP request should be:
'application/x-www-form-urlencoded'
On unsuccessful authentication, the HTTP response code is 401 (unauthorized); On successful authentication, the HTTP response code is 200 (OK) and Spring Security returns a cookie in the HTTP response header (using Set-Cookie). The session id must be put into the request header in order to access the REST APIs and logout. By default, the session timeout is 30 minutes.
You may try sending an authentication request by using LINUX command 'curl':
curl -i -k -d 'j_username=replace-with-your-vc-username&j_password=replace-with-your-vc-password' -X POST https://hostname:8443/serengeti/j_spring_security_check
On successful authentication, you will receive the HTTP response like:
HTTP/1.1 200 OK
Server: Apache-Coyote/1.1
Set-Cookie: JSESSIONID=session-id-value; Path=/serengeti; Secure
Content-Length: 0
Date: Wed, 27 Aug 2014 11:58:17 GMT
Connection: keep-alive
Length: 0
Big Data Extensions uses an HTTPS server with a self-signed certificate. For this reason, the client may need to implement a certificate trust mechanism or just ignore the certificate validation.