myfunction:
  mine_function: network.ip_addrs
  interface: 'eth0'

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{% for server, addrs in salt['mine.get']('*', 'myfunction', expr_form='glob').items() %}
{% set node_ip = addrs[0] %}
{% endfor %}

core_site.xml:
  file.managed:
    - name: {{ hadoop_defaults['paths']['HADOOP_CONF_DIR']['directory']|first }}/core-site.xml
    - source: salt://hadoop/files/hdfs/core-site.xml
    - user: {{ hadoop_defaults['users']['HDFS_USER'] }}
    - group: {{ hadoop_defaults['users']['HADOOP_GROUP'] }}
    - mode: '0644'
    - template: jinja
    - defaults:
        node_ip: {{ node_ip }}