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Ansible: reduce output in loops – or replace loops

  • When using loops in Ansible, the output can become cluttered, especially when working with lists of dictionaries.
  • Using the no_log: true option helps reduce output clutter by replacing the item-values with 'None,' but it may hinder error troubleshooting.
  • An alternative method is to loop over index numbers of list elements instead of the list directly.
  • This indexing approach makes output more compact and easier to read.
  • For large datasets, it is recommended to use json_query for filtering data efficiently instead of traditional looping.
  • When retrieving data from LDAP or web services, fetching all data at once and then extracting host-specific information using json_query is more efficient than querying individually for each host.
  • Using json_query can help streamline data extraction and enhance playbook performance in scenarios involving multiple hosts.
  • In summary, to reduce output clutter in loops, consider options like no_log: true, indexing list elements, and leveraging json_query for data filtering in Ansible.

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