问题描述
I am currently learning jinja2 and i am unsure on how to address variables the correct way:
Here are my variables in yaml:
--- hosts: app201.acme.com: {eth0: {ip: 46.0.0.1, netmask: 255.255.255.255}} graphite.acme.com: {eth0: {ip: 46.0.0.2, netmask: 255.255.255.255}, eth0.1: {ip: 10.2.90.1, netmask: 255.255.255.255}}
and here the jinja2 template:
{{ fqdn }} {% for interface in hosts[fqdn] %} {{ interface }} {{ hosts[fqdn].interface.ip }} << doesn't work {{ hosts[fqdn].{{ interface }}.ip }} << doesn't work {{ interface.ip }} << doesn't work {% endfor %}
so currently my output looks like this since I can't access second dimension of yaml hash.
graphite.acme.com eth0.1
eth0
解决方案
The variable hosts is a dict. The correct way to access values in dict is to use [] operator.
{{ fqdn }} {% for interface in hosts[fqdn] %} {{ interface }} {{ hosts[fqdn][interface]['ip'] }} {% endfor %}
. operator is used to access attribute of an object.