Provide a list of group of hosts.


Each item of the list has the following attributes:

Name req? Description
name yes The name of the host group
hosts no A list of hosts included in this group. Each host must be defined in the hosts: part (Or the associated Ansible inventory).
groups no A list of host_group from wich all hosts will be included in this group. Allow group composition, and also group renaming.
force_setup no A common Ansible problem is when referencing host info for a host which has not being accessed, so there is no fact grabbed for it.
Setting this flag to yes will trigger an access to all hosts of this group at the begining of the play.
Default: no
when no Boolean. Allow conditional deployment of this item.
Default True

Note than same host can belong to several groups.


- name: data_nodes
  hosts:    # This host list in standard YAML style
  - dn1
  - dn2
  - dn3

- name: control_nodes
  hosts: [ "sr", "en", "nn1", "nn2" ]   # And these in YAML 'flow style

- name: empty_group

# Group renaming
- name: brokers
  - kafka_brokers


If, when running HADeploy you encounter error like:

fatal: [dn1]: FAILED! => {"changed": false, "failed": true, "msg": "AnsibleUndefinedVariable: 'dict object' has no attribute 'ansible_fqdn'"}

it is most likely that you need to set force_setup on some host_group or host.