Cluster Rollout to Baremetal #663

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1. riccardomurri commented on Oct 21, 2019

   

   riccardomurri

   on Oct 21, 2019

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   Hello @loewa

   thanks for your suggestion! It is actually already possible to use ElastiCluster's playbooks with a custom inventory, except it's not really advertised :-)

   If you run elasticluster start (or setup) in full debug mode, you'll see a line like this in the logs:

       DEBUG Running Ansible command `ansible-playbook --private-key=.../.ssh/id_rsa .../elasticluster/elasticluster/share/playbooks/main.yml --inventory=.../.elasticluster/storage/spark.inventory --become --become-user=root -vv -e @extra_vars.yml` ...
   

   To run on an existing cluster, you can simply:

   1. Replace the --inventory=.../.elasticluster/storage/cluster.inventory option with the path to an inventory file you provide: --inventory=/path/to/my/inventory.ini

   2. Provide an extra_vars.yml file containing the minimal amount of
      information that ElastiCluster playbooks need. It basically
      contains a YAML dump of the configuration; you can just have a look
      at any extra_vars.yml file created in a ElastiCluster working
      directory.

      Most keys are actually unused; a minimal extra_vars.yml file
      would look like this:

       elasticluster:
         cloud: {}
         nodes:
           # add one line per node
           master: {}
           worker001: {}
           # ...
         # replace with actual writable directory
         output_dir: /tmp
      

   Might it be worth exposing this functionality through the command-line? If yes, how?
2. loewa commented on Oct 22, 2019

   

   loewa

   on Oct 22, 2019 via email

   Last edited by riccardomurri

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   Riccardo, Many thanks for the information. I wil give it a try. Kind regards, AL