ansible-inventory

How can I declare global variable within Ansible playbook. I have searched in google and found the below solution, but its not working as expected. - hosts: all vars: prod-servers: - x.x.x.x - x.x.x.x - hosts: "{{prod-servers}}" tasks: - name: ping action: ping When I'm trying the above code, it says variable prod-servers is undefined. You cannot define a variable accessible on a playbook level (global variable) from within a play. Variable Scopes Ansible has 3 main scopes: Global: this is set by config, environment variables and the command line Play: each play and contained structures, vars

I have the next snippet in my role template: upstream portal { {% set nodes = groups["my_dev_cluster"] %} {% for node in nodes %} ...do something with nodes... {% endfor %} } And it works well. But when I try to parametrize inventory group name like this: upstream portal { {% set nodes = groups["{{cluster_name}}"] %} {% for node in nodes %} ...do something with nodes... {% endfor %} } I get an exception like: FAILED! => {"changed": false, "failed": true, "msg": "AnsibleUndefinedVariable: 'dict object' has no attribute '{{cluster_name}}'"} Here, cluster_name - is a simple string variable

I am trying to compare some variables so here is my case: pg_master_ip is an ip obviously. ansible doesn't parse pg_master_ip . bond0.stdout is a result of an earlier register task. If I could use {{ hostvars[inventory_hostname]['ansible_bond0'].ipv4.address }} I'd be happier but I don't know how. - name: pgsql and pgpool initiate master include: master.yml when: bond0.stdout == '{{pg_master_ip}}' Thank you for the advice in advance. Using {{ hostvars[inventory_hostname][some_variable] }} is redundant. You can just use {{ some_variable }} instead. In this case it would be {{ ansible_bond0.ipv4