Zim's Notes

Just work related notes.

New Ansible Module Azure_rm_hdinsightcluster

https://github.com/Azure-Samples/ansible-playbooks/blob/master/hdinsight-create.yml

This sample will:

  • create resource group
  • create storage account
  • obtain storage account keys required by the cluster
  • create HDInsight cluster
  • resize cluster
  • delete cluster

Create Random Prefix

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- hosts: localhost
  tasks:
    - name: Prepare random prefix
      set_fact:
        rpfx: "{{ resource_group_name | hash('md5') | truncate(7, True, '') }}{{ 1000 | random }}"
      run_once: yes

Variables

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  vars:
    resource_group: "{{ resource_group_name }}"
    location: eastus
    vnet_name: myVirtualNetwork
    subnet_name: mySubnet
    cluster_name: mycluster{{ rpfx }}
    storage_account_name: mystorage{{ rpfx }}

Create Resource Group

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- name: Create a resource group
  azure_rm_resourcegroup:
    name: "{{ resource_group }}"
    location: "{{ location }}"

Create Storage Account and Obtain Keys

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- name: Create storage account
  azure_rm_storageaccount:
      resource_group: "{{ resource_group }}"
      name: "{{ storage_account_name }}"
      account_type: Standard_LRS
      location: eastus2

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- name: Get storage account keys
  azure_rm_resource:
    api_version: '2018-07-01'
    method: POST
    resource_group: "{{ resource_group }}"
    provider: storage
    resource_type: storageaccounts
    resource_name: "{{ storage_account_name }}"
    subresource:
      - type: listkeys
  register: storage_output

- debug:
    var: storage_output

Create Instance of HDInsight Cluster

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- name: Create instance of Cluster
  azure_rm_hdinsightcluster:
    resource_group: "{{ resource_group }}"
    name: "{{ cluster_name }}"
    location: eastus2
    cluster_version: 3.6
    os_type: linux
    tier: standard
    cluster_definition:
      kind: spark
      gateway_rest_username: http-user
      gateway_rest_password: MuABCPassword!!@123
    storage_accounts:
      - name: "{{ storage_account_name }}.blob.core.windows.net"
        is_default: yes
        container: "{{ cluster_name }}"
        key: "{{ storage_output['response']['keys'][0]['value'] }}"
    compute_profile_roles:
      - name: headnode
        target_instance_count: 1
        vm_size: Standard_D3
        linux_profile:
          username: sshuser
          password: MuABCPassword!!@123
      - name: workernode
        target_instance_count: 1
        vm_size: Standard_D3
        linux_profile:
          username: sshuser
          password: MuABCPassword!!@123
      - name: zookeepernode
        target_instance_count: 3
        vm_size: Medium
        linux_profile:
          username: sshuser
          password: MuABCPassword!!@123

Resize Cluster

The only thing that can be changed after HDInsight cluster is created is the number of worker nodes. Below task will increment number of nodes from 1 to 2.

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- name: Resize cluster
  azure_rm_hdinsightcluster:
    resource_group: "{{ resource_group }}"
    name: "{{ cluster_name }}"
    location: eastus2
    cluster_version: 3.6
    os_type: linux
    tier: standard
    cluster_definition:
      kind: spark
      gateway_rest_username: http-user
      gateway_rest_password: MuABCPassword!!@123
    storage_accounts:
      - name: "{{ storage_account_name }}.blob.core.windows.net"
        is_default: yes
        container: "{{ cluster_name }}"
        key: "{{ storage_output['response']['keys'][0]['value'] }}"
    compute_profile_roles:
      - name: headnode
        target_instance_count: 1
        vm_size: Standard_D3
        linux_profile:
          username: sshuser
          password: MuABCPassword!!@123
      - name: workernode
        target_instance_count: 2
        vm_size: Standard_D3
        linux_profile:
          username: sshuser
          password: MuABCPassword!!@123
      - name: zookeepernode
        target_instance_count: 3
        vm_size: Medium
        linux_profile:
          username: sshuser
          password: MuABCPassword!!@123
    tags:
      aaa: bbb
  register: output

Clean Up

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- name: Delete instance of Cluster
  azure_rm_hdinsightcluster:
    resource_group: "{{ resource_group }}"
    name: "{{ cluster_name }}"
    state: absent