ansible内置主机变量及魔法变量

概述

简单实用版本

实践

代码

---
- name: Get IP Addresshosts: allgather_facts: notasks:- name: Get IP Addressansible.builtin.setup:register: host_ip- name: Print IP Addressansible.builtin.debug:msg: "The IP Address of {{ ansible_hostname }} is {{ host_ip.ansible_facts.ansible_default_ipv4.address }}"#    - name: 打印主机的相关变量(打印的太多)
#      debug:
#        msg:
#          - "{{ hostvars[inventory_dir] }} {{ hostvars[inventory_hostname] }}"- name: 打印主机的相关变量debug:msg:- "inventory_dir={{ inventory_dir }} inventory_hostname={{ inventory_hostname }} group_names={{ group_names }}  groups={{ groups }} 当前playbook会在哪些hosts上运行={{ play_hosts }}"

执行效果

[root@ks8u-k8s-test01 k8s-ansible]# ansible-playbook -i hosts test-ip.yml PLAY [Get IP Address] **************************************************************************************************************************************************************TASK [Get IP Address] **************************************************************************************************************************************************************
ok: [10.32.36.51]
ok: [10.32.36.131]TASK [Print IP Address] ************************************************************************************************************************************************************
ok: [10.32.36.51] => {"msg": "The IP Address of ks8u-k8s-test01 is 10.32.36.51"
}
ok: [10.32.36.131] => {"msg": "The IP Address of KS8P-Test-K8S01 is 10.32.36.131"
}TASK [打印主机的相关变量] *******************************************************************************************************************************************************************
ok: [10.32.36.51] => {"msg": ["inventory_dir=/root/k8s-ansible inventory_hostname=10.32.36.51 group_names=[u'k8s', u'nodes']  groups={'ungrouped': [], 'all': [u'10.32.36.51', u'10.32.36.131'], u'k8s': [u'10.32.36.51', u'10.32.36.131'], u'nodes': [u'10.32.36.51', u'10.32.36.131']} 当前playbook会在哪些hosts上运行=[u'10.32.36.51', u'10.32.36.131']"]
}
ok: [10.32.36.131] => {"msg": ["inventory_dir=/root/k8s-ansible inventory_hostname=10.32.36.131 group_names=[u'k8s', u'nodes']  groups={'ungrouped': [], 'all': [u'10.32.36.51', u'10.32.36.131'], u'k8s': [u'10.32.36.51', u'10.32.36.131'], u'nodes': [u'10.32.36.51', u'10.32.36.131']} 当前playbook会在哪些hosts上运行=[u'10.32.36.51', u'10.32.36.131']"]
}PLAY RECAP *************************************************************************************************************************************************************************
10.32.36.131               : ok=3    changed=0    unreachable=0    failed=0    skipped=0    rescued=0    ignored=0   
10.32.36.51                : ok=3    changed=0    unreachable=0    failed=0    skipped=0    rescued=0    ignored=0