facts组件是Ansible用于采集被管理机器设备信息的一个功能。可以使用setup模块查机器的所有facts信息，可以使用filter来查看指定信息。整个facts信息被包装在一个json格式的数据结构中，ansible_facts是最上层的值
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[root@LVS_Master playbook]# ansible 192.168.170.129 -m setup192.168.170.129 | SUCCESS => { "ansible_facts": { "ansible_all_ipv4_addresses": [ "192.168.170.129", "192.168.170.188" ], "ansible_all_ipv6_addresses": [ "fe80::20c:29ff:fea0:6cd4" ], "ansible_architecture": "x86_64", "ansible_bios_date": "07/02/2015", "ansible_bios_version": "6.00", "ansible_cmdline": { "KEYBOARDTYPE": "pc", "KEYTABLE": "us", "LANG": "zh_CN.UTF-8", "quiet": true, "rd_NO_DM": true, "rd_NO_LUKS": true, "rd_NO_LVM": true, "rd_NO_MD": true, "rhgb": true, "ro": true, "root": "UUID=b42623ce-7b8d-411c-bc1b-26ba53cfc4d8" }, "ansible_date_time": { "date": "2016-11-22", "day": "22", "epoch": "1479793846", "hour": "13", "iso8601": "2016-11-22T05:50:46Z", "iso8601_basic": "20161122T135046459819", "iso8601_basic_short": "20161122T135046", "iso8601_micro": "2016-11-22T05:50:46.460213Z", "minute": "50", "month": "11", "second": "46", "time": "13:50:46", "tz": "CST", "tz_offset": "+0800", "weekday": "星期二", "weekday_number": "2", "weeknumber": "47", "year": "2016" }, "ansible_default_ipv4": { "address": "192.168.170.129", "alias": "eth0", "broadcast": "192.168.170.255", "gateway": "192.168.170.2", "interface": "eth0", "macaddress": "00:0c:29:a0:6c:d4", "mtu": 1500, "netmask": "255.255.255.0", "network": "192.168.170.0", "type": "ether" }, --------此处省略N行------------------- |
所有数据格式都是JSON格式，facts还支持查看指定信息，如下所示：
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[root@LVS_Master playbook]# ansible 192.168.170.129 -m setup -a 'filter=ansible_all_ipv4_addresses'192.168.170.129 | SUCCESS => { "ansible_facts": { "ansible_all_ipv4_addresses": [ "192.168.170.129", "192.168.170.188" ] }, "changed": false} |