Forum Discussion
BigD_300005
Cirrostratus
CirrostratusAnsible Dynamic node tasks
Is there a way in Ansible to get the node task to spin off multiple times without having to manually create 3 node tasks? I'd like to just have one playbook instead of multiple depending on how many nodes you need.
server_count = 3
i = 1
while i <= server_count:
node task stuff here
i = i + 1
- name: Create server [i]
bigip_node:
password: "{{ bigip_password }}"
server: "{{ ansible_host }}"
user: "{{ bigip_username }}"
partition: "{{ partition }}"
host: "{{ server[i]_ip }}"
name: "{{ server[i]_name }}"
validate_certs: "false"
state: "present"
delegate_to: localhost
Moulali_355357Nimbostratus
Looping over Parallel Sets of Data
Suppose you have the following variable data was loaded in via somewhere:
alpha: [ 'a', 'b', 'c', 'd' ] numbers: [ 1, 2, 3, 4 ] And you want the set of ‘(a, 1)’ and ‘(b, 2)’ and so on. Use ‘with_together’ to get this:
tasks: - debug: msg="{{ item.0 }} and {{ item.1 }}" with_together: - "{{alpha}}" - "{{numbers}}"
We can use the above loop to fulfill our requirement where to create/use multiple nodes in respective of LB or where to use multiple items.
Reference - http://ansible-docs.readthedocs.io/zh/stable-2.0/rst/playbooks_loops.html
- prt1969_120570
Does anyone have a simple example to test with or use as a template?
amintejCirrus
My playbook for this case is:
tasks: - name: ADD NODES bigip_node: state: present partition: "{{ f5_partition }}" server: "{{ f5_server }}" user: "{{ f5_user }}" password: "{{ f5_pass }}" name: "{{ item.f5_node_name }}" host: "{{ item.f5_node_host }}" validate_certs: no delegate_to: localhost with_items: "{{ f5_nodes_list }}"Example for node list:
f5_server: f5host.local f5_partition: partition1 f5_user: user1 f5_pass: vault f5_nodes_list: - f5_node_name: node-1 f5_node_host: 1.1.1.3 - f5_node_name: node-2 f5_node_host: 1.1.1.4