Ansible 递增 IP 地址 [英] Ansible increment IP address

问题描述

我正在使用 --extra-vars "lan=10.10.10.1"

我现在需要增加这个 ip 地址，使最后一个八位字节为 0.2，所以它等于 10.10.10.2.

I now need to increment this ip address so that the last octet is .2 so it will equal 10.10.10.2.

如何在 ansible 中实现这一点?

How would this be achieved in ansible?

推荐答案

一行:

- set_fact: new_ip="{{ lan | regex_replace('(^.*\.).*$', '\\1') }}{{lan.split('.')[3] | int + 1 }}"

它是如何工作的?

  tasks:
  - name: Echo the passed IP
    debug: var={{lan}}

  - name: Extract the last octet, increment it and store it
    set_fact: octet={{lan.split('.')[3] | int + 1 }}
  - debug: var=octet

  - name: Append the incremented octet to the first 3 octets
    set_fact: new_ip="{{ lan | regex_replace('(^.*\.).*$', '\\1') }}{{octet}}"
  - debug: var=new_ip

输出

TASK: [Echo the passed IP] ****************************************************
ok: [127.0.0.1] => {
    "127.0.0.1": "{{ 127.0.0.1 }}"
}
TASK: [Extract the last octet, increment it and store it] *********************
ok: [127.0.0.1] => {"ansible_facts": {"octet": "2"}}

TASK: [debug var=octet] *******************************************************
ok: [127.0.0.1] => {
    "octet": "2"
}
TASK: [Append the incremented octet to the first 3 octets] ********************
ok: [127.0.0.1] => {"ansible_facts": {"new_ip": "127.0.0.2"}}

TASK: [debug var=new_ip] ******************************************************
ok: [127.0.0.1] => {
    "new_ip": "127.0.0.2"
}

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