Hi there,
I'm trying to do a pretty simple thing and I can't make it work, I'll be
grateful for any help.
I'm trying to assign a list of hosts from a group to a variable, which
later on, I would like to iterate over in j2 template. Here is an extract:
I have an /etc/ansible/hosts file:
[zookeepers]
node01 id=1
node02 id=2
node03 id=3
part of playbook zookeeper.yml:
- hosts: zookeepers
sudo: True
roles:
- role: ansible-zookeeper
version: "3.4.6"
zookeeper_hosts: "{{ groups.zookeepers }}" # I would like to assign
all nodes of zookeepers group to a variable
part of template zoo.cfg.j2:
{% for server in zookeeper_hosts %}
server.{{ hostvars["{{server}}"]["id"] }} = {{server}}:2888:3888
{% endfor %}
This code does not work, because zookeeper_hosts variable is a string, and
iterating over it means iterating over letters of the string. Not what I
wanted.
I spent few hours trying weird combinations to do it, but I failed... The
things that worked:
1. Hard coding the list of hosts in playbook, instead of using
groups.zookeepers variable
2. Creating string joined by ',' in playbook ( "{{ groups.zookeepers |
join(',') }} " and then using zookeeper_hosts.split(',') in j2 template.
I wouldn't like to modify the template as it is created by someone else.
Any way, it doesn't seem clean.
Please anyone help me with this.
Thank you!
Krzysztof
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