[Feature Req] Tool/Script to generate "cluster.yml" configs from existing exported CDP cluster template json files

Not sure I'm missing a simpler strategy, on howto prepare a new "cluster.yml" file required by this playbook (to be configured in the definition_path), from an exportable CDP (7.1.x / private-cloud) cluster ? Would be great to get input from Cloudera guys :) Alternatively, or in addition, it would be highly useful/helpful if much more advanced "cluster.yml" example would be added to the repo (for ex. to deploy a 3-master node HA cluster, as this was nicely done in the former HDP repo: https://github.com/hortonworks/ansible-hortonworks/blob/master/playbooks/group_vars/example-hdp-ha-3-masters-with-ranger-atlas )

Once I learn here in the community, there's indeed no such existing script .. I'm happy to write&contribute myself something

Minimal features:

create the mapping of the contained services to the host-groups
create the mapping of all the found "configs" elements to the key/value pairs in the "cluster.yml" service's "dict" element
- (later) nice to have: an option to skip any config values which are/were just defaults from the beginning
many other things .. that are required to make it useable/work?
handling these "refName" values in the sourc template json

Script Input / Output examples

Input file, just small extract (from exported cluster template)
- Can give more infos later howto that for people not familiar.
```
{
"cdhVersion" : "7.1.4",
"displayName" : "Basic Cluster",
"cmVersion" : "7.1.4",
"repositories" : [ ... ],
"products" : [ {
"version" : "7.1.4-1.cdh7.1.4.p0.6300266",
"product" : "CDH"
} ],
"services" : [ {
"refName" : "zookeeper",
"serviceType" : "ZOOKEEPER",
"serviceConfigs" : [ {
"name" : "zookeeper_datadir_autocreate",
"value" : "true"
} ],
"roleConfigGroups" : [ {
"refName" : "zookeeper-SERVER-BASE",
"roleType" : "SERVER",
"configs" : [ {
"name" : "zk_server_log_dir",
"value" : "/var/log/zookeeper"
}, {
"name" : "dataDir",
"variable" : "zookeeper-SERVER-BASE-dataDir"
}, {
"name" : "dataLogDir",
"variable" : "zookeeper-SERVER-BASE-dataLogDir"
} ],
"base" : true
} ]
}, 
...
```
} ], "hostTemplates" : [ { "refName" : "HostTemplate-0-from-eval-cdp-public[1-3].internal.cloudapp.net", "cardinality" : 3, "roleConfigGroupsRefNames" : [ "hdfs-DATANODE-BASE", "spark_on_yarn-GATEWAY-BASE", "yarn-NODEMANAGER-BASE" ] }, { "refName" : "HostTemplate-1-from-eval-cdp-public0.internal.cloudapp.net", "cardinality" : 1, "roleConfigGroupsRefNames" : [ "hdfs-NAMENODE-BASE", "hdfs-SECONDARYNAMENODE-BASE", "spark_on_yarn-GATEWAY-BASE", "spark_on_yarn-SPARK_YARN_HISTORY_SERVER-BASE", "yarn-JOBHISTORY-BASE", "yarn-RESOURCEMANAGER-BASE", "zookeeper-SERVER-BASE" ] } ], ...

Output file, following the format of cluster.yml, for ex: roles/cloudera_deploy/defaults/basic_cluster.yml

clusters:
  - name: Basic Cluster
    services: [HDFS, YARN, ZOOKEEPER]
    repositories:
      - https://archive.cloudera.com/cdh7/7.1.4.0/parcels/
    configs:
      ZOOKEEPER:
        SERVICEWIDE:
          zookeeper_datadir_autocreate: true
          zk_server_log_dir": "/var/log/zookeeper"

      HDFS:
        DATANODE:
          dfs_data_dir_list: /dfs/dn
        NAMENODE:
          dfs_name_dir_list: /dfs/nn
...
    host_templates:
      Master1:
        HDFS: [NAMENODE, SECONDARYNAMENODE]
        YARN: [RESOURCEMANAGER, JOBHISTORY]
        ZOOKEEPER: [SERVER]
      Workers:
        HDFS: [DATANODE]
        YARN: [NODEMANAGER]

cloudera-labs / cloudera-deploy

[Feature Req] Tool/Script to generate "cluster.yml" configs from existing exported CDP cluster template json files #39