Ansible facts

facts組件是Ansible用於採集被管理機器設備信息的一個功能。可使用setup模塊查機器的全部facts信息，可使用filter來查看指定信息。整個facts信息被包裝在一個json格式的數據結構中，ansible_facts是最上層的值

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[root@LVS_Master playbook] # ansible 192.168.170.129 -m setup 192.168.170.129 | 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"          }, --------此處省略N行-------------------

全部數據格式都是JSON格式，facts還支持查看指定信息，以下所示：

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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 }