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I know that one can add host with the following task:
- name: Add new instance to host group
add_host:
hostname: '{{ item.public_ip }}'
groupname: "tag_Name_api_production"
with_items: ec2.instances
But I can't seem to find a way to remove a host from inventory. Is there any way to do this?
533
Details: Use Special Variables. Quoting: ansible_play_hosts_all: List of all the hosts that were targeted by the play. ansible_play_hosts: List of hosts in the current play run, not limited by the serial.
With hostvars , you can access variables defined for any host in the play, at any point in a playbook. You can access Ansible facts using the hostvars variable too, but only after you have gathered (or cached) facts.
Ignoring failed commands By default Ansible stops executing tasks on a host when a task fails on that host. You can use ignore_errors to continue on in spite of the failure. The ignore_errors directive only works when the task is able to run and returns a value of 'failed'.
rc. Some modules execute command line utilities or are geared for executing commands directly (raw, shell, command, and so on), this field contains 'return code' of these utilities.
Unfortunately, it seems, that you can't do this using Ansible 2. There is no such a module called remove_host or another one.
However, using Ansible 2 you can refresh your inventory mid-play:
- meta: refresh_inventory
Have a look at this question
Another idea might be to filter hosts beforehand. Try adding them to group, and then excluding this group in a play lately, e.g. :
- hosts: '!databases'
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