如何运行安赛尔没有指定库存，但主机直接？

我希望在 Python 中运行 Anble，而不需要通过(ANSIBLE _ HOST)指定库存文件，只需要:

ansible.run.Runner(
module_name='ping',
host='www.google.com'
)

我实际上可以很容易地在面料中实现这一点，但是不知道如何在 Python 中实现这一点。另一方面，Python 的 AnsibleAPI 文档实际上并不完整。

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小开

Surprisingly, the trick is to append a ,

# Host and IP address
ansible all -i example.com,
ansible all -i 93.184.216.119,

or

# Requires 'hosts: all' in your playbook
ansible-playbook -i example.com, playbook.yml

The host parameter preceding the , can be either a hostname or an IPv4/v6 address.

小开

You can do this with:

hosts = ["webserver1","webserver2"]


webInventory = ansible.inventory.Inventory(hosts)


webPing = ansible.runner.Runner(
pattern='webserver*',
module_name='ping',
inventory = webInventory
).run()

Whatever is in hosts becomes your inventory and you can search it with pattern (or do "all").

小开

I also needed to drive the Ansible Python API, and would rather pass hosts as arguments rather than keep an inventory. I used a temporary file to get around Ansible's requirement, which may be helpful to others:

from tempfile import NamedTemporaryFile


from ansible.inventory import Inventory
from ansible.runner import Runner


def load_temporary_inventory(content):
tmpfile = NamedTemporaryFile()
try:
tmpfile.write(content)
tmpfile.seek(0)
inventory = Inventory(tmpfile.name)
finally:
tmpfile.close()
return inventory


def ping(hostname):
inventory = load_temporary_inventory(hostname)
runner = Runner(
module_name='ping',
inventory=inventory,
)
return runner.run()
小开

I know this question is really old but think that this little trick might helpful for future users who need help for this:

ansible-playbook -i 10.254.3.133, site.yml

if you run for local host:

ansible-playbook -i localhost, --connection=local site.yml

The trick is that after ip address/dns name, put the comma inside the quotes and requires 'hosts: all' in your playbook.

Hope this will help.

小开

In my case, I did not want to have hosts: all in my playbook, because it would be bad if someone ran the playbook and forgot to include -i 10.254.3.133,

This was my solution (ansible 2.6):

$ ansible-playbook myplaybook.yml -e "{target: 10.1.1.1}" -i 10.1.1.1, ...

And then, in the playbook:

- hosts: "\{\{ target }}"
remote_user: donn
vars_files:
- myvars
roles:
- myrole

This is a special use-case when I need to provision a host and I don't want/need to add it to the inventory.

小开

A very simple solution as per my understanding, apologize if it's a distraction.

Here are 3 main steps needs to be there,

  1. command-line options
  2. What needs to be exposed in the playbook.yml
  3. What it says

1.command-line options

ansible-playbook -l "host-name" <playbook.yml>

Please note that host-name is $hostname of the node

2.What needs to be exposed inside the playbook.yml

- hosts: webservers
tasks:
- debug:
msg: "\{\{ ansible_ssh_host }}"
when: inventory_hostname in groups['webservers']

3.What it says? Have a look :)

TASK [debug] ***********************************************************************************************************************************************************
Thursday 10 December 2020  13:01:07 +0530 (0:00:03.153)       0:00:03.363 *****
ok: [node1] => {
"msg": "192.168.1.186"
}

This is how we can execute tasks on specific nodes using the --limit or -l option


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