问题
How do you get the current host's IP address in a role?
I know you can get the list of groups the host is a member of and the hostname of the host but I am unable to find a solution to getting the IP address.
You can get the hostname by using {{inventory_hostname}}
and the group by using {{group_names}}
I have tried things like {{ hostvars[{{ inventory_hostname }}]['ansible_ssh_host'] }}
and ip="{{ hostvars.{{ inventory_hostname }}.ansible_ssh_host }}"
回答1:
A list of all addresses is stored in a fact ansible_all_ipv4_addresses
, a default address in ansible_default_ipv4.address
.
---
- hosts: localhost
connection: local
tasks:
- debug: var=ansible_all_ipv4_addresses
- debug: var=ansible_default_ipv4.address
Then there are addresses assigned to each network interface... In such cases you can display all the facts and find the one that has the value you want to use.
回答2:
You can get the IP address from hostvars
, dict ansible_default_ipv4
and key address
hostvars[inventory_hostname]['ansible_default_ipv4']['address']
and IPv6 address respectively
hostvars[inventory_hostname]['ansible_default_ipv6']['address']
An example playbook:
---
- hosts: localhost
tasks:
- debug: var=hostvars[inventory_hostname]['ansible_default_ipv4']['address']
- debug: var=hostvars[inventory_hostname]['ansible_default_ipv6']['address']
回答3:
You can use in your template.j2 {{ ansible_eth0.ipv4.address }}
the same way you use {{inventory_hostname}}
.
ps: Please refer to the following blogpost to have more information about HOW TO COLLECT INFORMATION ABOUT REMOTE HOSTS WITH ANSIBLE GATHERS FACTS .
'hoping it’ll help someone one day ッ
回答4:
If you want the external public IP and you're in a cloud environment like AWS or Azure, you can use the ipify_facts module:
# TODO: SECURITY: This requires that we trust ipify to provide the correct public IP. We could run our own ipify server.
- name: Get my public IP from ipify.org
ipify_facts:
This will place the public IP into the variable ipify_public_ip
.
回答5:
Another way to find public IP would be to use uri
module:
- name: Find my public ip
uri:
url: http://ifconfig.me/ip
return_content: yes
register: ip_response
Your IP will be in ip_response.content
回答6:
http://docs.ansible.com/ansible/latest/plugins/lookup/dig.html
so in template, for e. g.:
{{ lookup('dig', ansible_host) }}
Notes:
- Since not only DNS name could be used in inventory a check if it's not IP already better be added
- Obviously enough this receipt wouldn't work as intended for indirect host specifications (like using jump hosts, for e. g.)
But still it serves 99 % (figuratively speaking) of use cases.
回答7:
Plain ansible_default_ipv4.address
might not be what you think in some cases, use:
ansible_default_ipv4.address|default(ansible_all_ipv4_addresses[0])
回答8:
Simple debug command:
ansible -i inventory/hosts.yaml -m debug -a "var=hostvars[inventory_hostname]" all
output:
"hostvars[inventory_hostname]": {
"ansible_check_mode": false,
"ansible_diff_mode": false,
"ansible_facts": {},
"ansible_forks": 5,
"ansible_host": "192.168.10.125",
"ansible_inventory_sources": [
"/root/workspace/ansible-minicros/inventory/hosts.yaml"
],
"ansible_playbook_python": "/usr/bin/python2",
"ansible_port": 65532,
"ansible_verbosity": 0,
"ansible_version": {
"full": "2.8.5",
"major": 2,
"minor": 8,
"revision": 5,
"string": "2.8.5"
},
get host ip address:
ansible -i inventory/hosts.yaml -m debug -a "var=hostvars[inventory_hostname].ansible_host" all
zk01 | SUCCESS => {
"hostvars[inventory_hostname].ansible_host": "192.168.10.125"
}
回答9:
The following snippet will return the public ip of the remote machine and also default ip(i.e: LAN)
This will print ip's in quotes also to avoid confusion in using config files.
>> main.yml
---
- hosts: localhost
tasks:
- name: ipify
ipify_facts:
- debug: var=hostvars[inventory_hostname]['ipify_public_ip']
- debug: var=hostvars[inventory_hostname]['ansible_default_ipv4']['address']
- name: template
template:
src: debug.j2
dest: /tmp/debug.ansible
>> templates/debug.j2
public_ip={{ hostvars[inventory_hostname]['ipify_public_ip'] }}
public_ip_in_quotes="{{ hostvars[inventory_hostname]['ipify_public_ip'] }}"
default_ipv4={{ hostvars[inventory_hostname]['ansible_default_ipv4']['address'] }}
default_ipv4_in_quotes="{{ hostvars[inventory_hostname]['ansible_default_ipv4']['address'] }}"
来源:https://stackoverflow.com/questions/39819378/ansible-get-current-target-hosts-ip-address