How to delay running playbook? - ansible

Question

I have a playbook which creates a virtual machine in vCenter. During creation the VM mounts iso image and installs OS automatically. After installation VM gets its IP address. I want to continue running playbook, but using the IP.
I read about wait_for, but I don't understand how to use it. Or maybe there is another way do it?
Playbook below:
- hosts: localhost
gather_facts: false
connection: local
user: ansible
become: true
vars_files:
- ../roles/vm-create/vars/default.yml
vars_prompt:
- name: "name_VM"
prompt: "VM name:"
private: no
default: "vm001"
- name: "vcenter_user"
prompt: "vCenter user"
private: no
default: "root"
- name: "vcenter_pass"
prompt: "Enter password vCenter"
private: yes
roles:
- vm-create
# waiting for the installation and gets ip (Do-Until Loops or wait_for)
- name: setting VM
become: true
hosts: '{{ get_ip }}'
roles:
- { role: ldap-client, tags: [ 'ldap' ] }

Answer 1

You don't show how you assign the get_ip variable, so I assume you can reference it. It's not straightforward, because you would have to either access it with hostvars['localhost']['get_ip]` or you should create a dynamic inventory.
Then you just need to use a very basic wait_for task, but because you want to assign a role to the machine, you need to define the task in the pre_tasks section.
Your second play should be:
- name: setting VM
become: true
hosts: '{{ get_ip }}'
pre_tasks:
- name: Ensure machine at {{ get_ip }} SSH port is listening
wait_for:
host: "{{ get_ip }}"
port: 22 # SSH port
delay: 60 # wait 1 minute before trying
roles:
- { role: ldap-client, tags: [ 'ldap' ] }