How to get postgresql_query results from Ansible

问题

I'm trying to print the output of PostgreSQL query that is run by Ansible. Unfortunately I'm not sure how to get ahold of the return value.

    - name: Get specific tables
      postgresql_query:
        db: "{{ database_name }}"
        login_host: "{{ my_host }}"
        login_user: "{{ my_user }}"
        login_password: "{{ my_password }}"
        query: SELECT * FROM pg_tables t WHERE t.tableowner = current_user

Googling just says to use register:, but the PostgreSQL ansible module does not have a register param:

fatal: [xx.xxx.xx.xx]: FAILED! => {"changed": false, "msg": "Unsupported parameters for (postgresql_query) module: register Supported parameters include: ca_cert, db, login_host, login_password, login_unix_socket, login_user, named_args, path_to_script, port, positional_args, query, session_role, ssl_mode"}

The Ansible docs list return values for this module but there are no examples on how to use them, and everything I search for leads right back to register:.

回答1:

Sounds like you are very close, but have register at the wrong indentation. It's a parameter of the task itself, not the postgresql module.

Try:

    - name: Get specific tables
      postgresql_query:
        db: "{{ database_name }}"
        login_host: "{{ my_host }}"
        login_user: "{{ my_user }}"
        login_password: "{{ my_password }}"
        query: SELECT * FROM pg_tables t WHERE t.tableowner = current_user
      register: result

    - debug:
        var: result

来源：https://stackoverflow.com/questions/57487357/how-to-get-postgresql-query-results-from-ansible