blocks|key|21844|text|注意，关于连接配置变量或“行为”变量的官方文档在Inventory文档中似乎是List+of+Behavioral+Inventory+Parameters。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|21845|附注：sudo选项在那里是没有文档的(是的，它的sudo不是您所期望的ansible_sudo+...)也许更多的人不是，但这是我在他们身上找到的最好的医生。|style|CODE|21846|entityMap|0|LINK|mutability|MUTABLE|url|http://docs.ansible.com/intro_inventory.html#inventory|1|http://docs.ansible.com/intro_inventory.html#list-of-behavioral-inventory-parameters^0|O|9|0|13|13|1|0|3|4|O|4|Z|C|0^^$0|@$1|2|3|4|5|6|7|R|8|@]|9|@$A|S|B|T|1|U]|$A|V|B|W|1|X]]|C|$]]|$1|D|3|E|5|6|7|Y|8|@$A|Z|B|10|F|G]|$A|11|B|12|F|G]|$A|13|B|14|F|G]]|9|@]|C|$]]|$1|H|3|-4|5|6|7|15|8|@]|9|@]|C|$]]]|I|$J|$5|K|L|M|C|$N|O]]|P|$5|K|L|M|C|$N|Q]]]]

Note the official docs on connection configuration variables or "behavioral" variables - which aren't listed in host vars, appears to be <a href="http://docs.ansible.com/intro_inventory.html#list-of-behavioral-inventory-parameters" rel="nofollow">List of Behavioral Inventory Parameters</a> in the <a href="http://docs.ansible.com/intro_inventory.html#inventory" rel="nofollow">Inventory</a> documentation. 

P.S. The <code>sudo</code> option is undocumented there (yes its <code>sudo</code> not <code>ansible_sudo</code> as you'd expect ...) and probably a couple more aren't, but thats best doc I've found on em.

blocks|key|238369|text|我使用这个简单的攻略：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|238370|---
#+vars.yml
#
#+Shows+the+value+of+all+variables/facts.
#
#+Example:
#
#+++ansible-playbook+vars.yml+-e+'hosts=localhost'
#
-+hosts:+localhost
++tasks:
++++-+fail:+"You+must+specify+a+value+for+`hosts`+variable+-+e.g.:+ansible-playbook+vars.yml+-e+'hosts=localhost'"
++++++when:+hosts+is+not+defined

-+hosts:+"{{+hosts+}}"
++tasks:
++++-+debug:+var=vars
++++-+debug:+var=hostvars[inventory_hostname]|code-block|syntax|javascript|238371|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

I use this simple playbook:

<pre><code>---
# vars.yml
#
# Shows the value of all variables/facts.
#
# Example:
#
# ansible-playbook vars.yml -e 'hosts=localhost'
#
- hosts: localhost
 tasks:
 - fail: "You must specify a value for `hosts` variable - e.g.: ansible-playbook vars.yml -e 'hosts=localhost'"
 when: hosts is not defined

- hosts: "{{ hosts }}"
 tasks:
 - debug: var=vars
 - debug: var=hostvars[inventory_hostname]
</code></pre>

blocks|key|21900|text|https://github.com/f500/ansible-dumpall|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|21901|仅供参考:这个github项目向您展示了如何列出所有主机上90%25的变量。我发现它在全局上比单个主机命令更有用。自述文件包含有关构建简单清单报告的说明。更有价值的是，在行动手册的末尾运行它，以查看所有事实。要调试任务行为，请使用register：|21902|结果缺少了几项：-包含的YAML文件变量-+extra-vars+-这里描述的一些Ansible内部变量：Ansible+Behavioural+Params|21903|entityMap|0|LINK|mutability|MUTABLE|url|1|http://docs.ansible.com/ansible/intro_inventory.html#list-of-behavioral-inventory-parameters^0|0|13|0|0|0|1H|Q|1|0^^$0|@$1|2|3|4|5|6|7|Q|8|@]|9|@$A|R|B|S|1|T]]|C|$]]|$1|D|3|E|5|6|7|U|8|@]|9|@]|C|$]]|$1|F|3|G|5|6|7|V|8|@]|9|@$A|W|B|X|1|Y]]|C|$]]|$1|H|3|-4|5|6|7|Z|8|@]|9|@]|C|$]]]|I|$J|$5|K|L|M|C|$N|4]]|O|$5|K|L|M|C|$N|P]]]]

<a href="https://github.com/f500/ansible-dumpall" rel="nofollow">https://github.com/f500/ansible-dumpall</a> 
FYI: this github project shows you how to list 90% of variables across all hosts. I find it more globally useful than single host commands. The README includes instructions for building a simple inventory report. It's even more valuable to run this at the end of a playbook to see all the Facts. To also debug Task behaviour use register:

The result is missing a few items:
- included YAML file variables
- extra-vars
- a number of the Ansible internal vars described here: <a href="http://docs.ansible.com/ansible/intro_inventory.html#list-of-behavioral-inventory-parameters" rel="nofollow" title="Behavioural Params">Ansible Behavioural Params</a>

blocks|key|238438|text|有些变量并非在每个主机上都可用，例如ansible_domain和domain。如果需要调试情况，我登录到服务器并发出：|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|238439|user@server:~$+ansible+-m+setup+localhost+%7C+grep+domain
+[WARNING]:+provided+hosts+list+is+empty,+only+localhost+is+available
++++"ansible_domain":+"prd.example.com",|code-block|syntax|javascript|238440|entityMap^0|I|E|X|6|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@$9|N|A|O|B|C]|$9|P|A|Q|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|R|8|@]|D|@]|E|$I|J]]|$1|K|3|-4|5|6|7|S|8|@]|D|@]|E|$]]]|L|$]]

Some variables are not available on every host, e.g. <code>ansible_domain</code> and <code>domain</code>. If the situation needs to be debugged, I login to the server and issue:

<pre><code>user@server:~$ ansible -m setup localhost | grep domain
 [WARNING]: provided hosts list is empty, only localhost is available
 "ansible_domain": "prd.example.com",
</code></pre>

blocks|key|238473|text|有很多变量被定义为事实--+http://docs.ansible.com/ansible/playbooks_variables.html#information-discovered-from-systems-facts|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|238474|"ansible_all_ipv4_addresses":+[
++++"REDACTED+IP+ADDRESS"
],
"ansible_all_ipv6_addresses":+[
++++"REDACTED+IPV6+ADDRESS"
],
"ansible_architecture":+"x86_64",
"ansible_bios_date":+"09/20/2012",
"ansible_bios_version":+"6.00",
"ansible_cmdline":+{
++++"BOOT_IMAGE":+"/boot/vmlinuz-3.5.0-23-generic",
++++"quiet":+true,
++++"ro":+true,
++++"root":+"UUID=4195bff4-e157-4e41-8701-e93f0aec9e22",
++++"splash":+true
},
"ansible_date_time":+{
++++"date":+"2013-10-02",
++++"day":+"02",
++++"epoch":+"1380756810",
++++"hour":+"19",
++++"iso8601":+"2013-10-02T23:33:30Z",
++++"iso8601_micro":+"2013-10-02T23:33:30.036070Z",
++++"minute":+"33",
++++"month":+"10",
++++"second":+"30",
++++"time":+"19:33:30",
++++"tz":+"EDT",
++++"year":+"2013"
},
"ansible_default_ipv4":+{
++++"address":+"REDACTED",
++++"alias":+"eth0",
++++"gateway":+"REDACTED",
++++"interface":+"eth0",
++++"macaddress":+"REDACTED",
++++"mtu":+1500,
++++"netmask":+"255.255.255.0",
++++"network":+"REDACTED",
++++"type":+"ether"
},
"ansible_default_ipv6":+{},
"ansible_devices":+{
++++"fd0":+{
++++++++"holders":+[],
++++++++"host":+"",
++++++++"model":+null,
++++++++"partitions":+{},
++++++++"removable":+"1",
++++++++"rotational":+"1",
++++++++"scheduler_mode":+"deadline",
++++++++"sectors":+"0",
++++++++"sectorsize":+"512",
++++++++"size":+"0.00+Bytes",
++++++++"support_discard":+"0",
++++++++"vendor":+null
++++},
++++"sda":+{
++++++++"holders":+[],
++++++++"host":+"SCSI+storage+controller:+LSI+Logic+/+Symbios+Logic+53c1030+PCI-X+Fusion-MPT+Dual+Ultra320+SCSI+(rev+01)",
++++++++"model":+"VMware+Virtual+S",
++++++++"partitions":+{
++++++++++++"sda1":+{
++++++++++++++++"sectors":+"39843840",
++++++++++++++++"sectorsize":+512,
++++++++++++++++"size":+"19.00+GB",
++++++++++++++++"start":+"2048"
++++++++++++},
++++++++++++"sda2":+{
++++++++++++++++"sectors":+"2",
++++++++++++++++"sectorsize":+512,
++++++++++++++++"size":+"1.00+KB",
++++++++++++++++"start":+"39847934"
++++++++++++},
++++++++++++"sda5":+{
++++++++++++++++"sectors":+"2093056",
++++++++++++++++"sectorsize":+512,
++++++++++++++++"size":+"1022.00+MB",
++++++++++++++++"start":+"39847936"
++++++++++++}
++++++++},
++++++++"removable":+"0",
++++++++"rotational":+"1",
++++++++"scheduler_mode":+"deadline",
++++++++"sectors":+"41943040",
++++++++"sectorsize":+"512",
++++++++"size":+"20.00+GB",
++++++++"support_discard":+"0",
++++++++"vendor":+"VMware,"
++++},
++++"sr0":+{
++++++++"holders":+[],
++++++++"host":+"IDE+interface:+Intel+Corporation+82371AB/EB/MB+PIIX4+IDE+(rev+01)",
++++++++"model":+"VMware+IDE+CDR10",
++++++++"partitions":+{},
++++++++"removable":+"1",
++++++++"rotational":+"1",
++++++++"scheduler_mode":+"deadline",
++++++++"sectors":+"2097151",
++++++++"sectorsize":+"512",
++++++++"size":+"1024.00+MB",
++++++++"support_discard":+"0",
++++++++"vendor":+"NECVMWar"
++++}
},
"ansible_distribution":+"Ubuntu",
"ansible_distribution_release":+"precise",
"ansible_distribution_version":+"12.04",
"ansible_domain":+"",
"ansible_env":+{
++++"COLORTERM":+"gnome-terminal",
++++"DISPLAY":+":0",
++++"HOME":+"/home/mdehaan",
++++"LANG":+"C",
++++"LESSCLOSE":+"/usr/bin/lesspipe+%25s+%25s",
++++"LESSOPEN":+"%7C+/usr/bin/lesspipe+%25s",
++++"LOGNAME":+"root",
++++"LS_COLORS":+"rs=0:di=01;34:ln=01;36:mh=00:pi=40;33:so=01;35:do=01;35:bd=40;33;01:cd=40;33;01:or=40;31;01:su=37;41:sg=30;43:ca=30;41:tw=30;42:ow=34;42:st=37;44:ex=01;32:*.tar=01;31:*.tgz=01;31:*.arj=01;31:*.taz=01;31:*.lzh=01;31:*.lzma=01;31:*.tlz=01;31:*.txz=01;31:*.zip=01;31:*.z=01;31:*.Z=01;31:*.dz=01;31:*.gz=01;31:*.lz=01;31:*.xz=01;31:*.bz2=01;31:*.bz=01;31:*.tbz=01;31:*.tbz2=01;31:*.tz=01;31:*.deb=01;31:*.rpm=01;31:*.jar=01;31:*.war=01;31:*.ear=01;31:*.sar=01;31:*.rar=01;31:*.ace=01;31:*.zoo=01;31:*.cpio=01;31:*.7z=01;31:*.rz=01;31:*.jpg=01;35:*.jpeg=01;35:*.gif=01;35:*.bmp=01;35:*.pbm=01;35:*.pgm=01;35:*.ppm=01;35:*.tga=01;35:*.xbm=01;35:*.xpm=01;35:*.tif=01;35:*.tiff=01;35:*.png=01;35:*.svg=01;35:*.svgz=01;35:*.mng=01;35:*.pcx=01;35:*.mov=01;35:*.mpg=01;35:*.mpeg=01;35:*.m2v=01;35:*.mkv=01;35:*.webm=01;35:*.ogm=01;35:*.mp4=01;35:*.m4v=01;35:*.mp4v=01;35:*.vob=01;35:*.qt=01;35:*.nuv=01;35:*.wmv=01;35:*.asf=01;35:*.rm=01;35:*.rmvb=01;35:*.flc=01;35:*.avi=01;35:*.fli=01;35:*.flv=01;35:*.gl=01;35:*.dl=01;35:*.xcf=01;35:*.xwd=01;35:*.yuv=01;35:*.cgm=01;35:*.emf=01;35:*.axv=01;35:*.anx=01;35:*.ogv=01;35:*.ogx=01;35:*.aac=00;36:*.au=00;36:*.flac=00;36:*.mid=00;36:*.midi=00;36:*.mka=00;36:*.mp3=00;36:*.mpc=00;36:*.ogg=00;36:*.ra=00;36:*.wav=00;36:*.axa=00;36:*.oga=00;36:*.spx=00;36:*.xspf=00;36:",
++++"MAIL":+"/var/mail/root",
++++"OLDPWD":+"/root/ansible/docsite",
++++"PATH":+"/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin",
++++"PWD":+"/root/ansible",
++++"SHELL":+"/bin/bash",
++++"SHLVL":+"1",
++++"SUDO_COMMAND":+"/bin/bash",
++++"SUDO_GID":+"1000",
++++"SUDO_UID":+"1000",
++++"SUDO_USER":+"mdehaan",
++++"TERM":+"xterm",
++++"USER":+"root",
++++"USERNAME":+"root",
++++"XAUTHORITY":+"/home/mdehaan/.Xauthority",
++++"_":+"/usr/local/bin/ansible"
},
"ansible_eth0":+{
++++"active":+true,
++++"device":+"eth0",
++++"ipv4":+{
++++++++"address":+"REDACTED",
++++++++"netmask":+"255.255.255.0",
++++++++"network":+"REDACTED"
++++},
++++"ipv6":+[
++++++++{
++++++++++++"address":+"REDACTED",
++++++++++++"prefix":+"64",
++++++++++++"scope":+"link"
++++++++}
++++],
++++"macaddress":+"REDACTED",
++++"module":+"e1000",
++++"mtu":+1500,
++++"type":+"ether"
},
"ansible_form_factor":+"Other",
"ansible_fqdn":+"ubuntu2.example.com",
"ansible_hostname":+"ubuntu2",
"ansible_interfaces":+[
++++"lo",
++++"eth0"
],
"ansible_kernel":+"3.5.0-23-generic",
"ansible_lo":+{
++++"active":+true,
++++"device":+"lo",
++++"ipv4":+{
++++++++"address":+"127.0.0.1",
++++++++"netmask":+"255.0.0.0",
++++++++"network":+"127.0.0.0"
++++},
++++"ipv6":+[
++++++++{
++++++++++++"address":+"::1",
++++++++++++"prefix":+"128",
++++++++++++"scope":+"host"
++++++++}
++++],
++++"mtu":+16436,
++++"type":+"loopback"
},
"ansible_lsb":+{
++++"codename":+"precise",
++++"description":+"Ubuntu+12.04.2+LTS",
++++"id":+"Ubuntu",
++++"major_release":+"12",
++++"release":+"12.04"
},
"ansible_machine":+"x86_64",
"ansible_memfree_mb":+74,
"ansible_memtotal_mb":+991,
"ansible_mounts":+[
++++{
++++++++"device":+"/dev/sda1",
++++++++"fstype":+"ext4",
++++++++"mount":+"/",
++++++++"options":+"rw,errors=remount-ro",
++++++++"size_available":+15032406016,
++++++++"size_total":+20079898624
++++}
],
"ansible_nodename":+"ubuntu2.example.com",
"ansible_os_family":+"Debian",
"ansible_pkg_mgr":+"apt",
"ansible_processor":+[
++++"Intel(R)+Core(TM)+i7+CPU+++++++++860++@+2.80GHz"
],
"ansible_processor_cores":+1,
"ansible_processor_count":+1,
"ansible_processor_threads_per_core":+1,
"ansible_processor_vcpus":+1,
"ansible_product_name":+"VMware+Virtual+Platform",
"ansible_product_serial":+"REDACTED",
"ansible_product_uuid":+"REDACTED",
"ansible_product_version":+"None",
"ansible_python_version":+"2.7.3",
"ansible_selinux":+false,
"ansible_ssh_host_key_dsa_public":+"REDACTED+KEY+VALUE"
"ansible_ssh_host_key_ecdsa_public":+"REDACTED+KEY+VALUE"
"ansible_ssh_host_key_rsa_public":+"REDACTED+KEY+VALUE"
"ansible_swapfree_mb":+665,
"ansible_swaptotal_mb":+1021,
"ansible_system":+"Linux",
"ansible_system_vendor":+"VMware,+Inc.",
"ansible_user_id":+"root",
"ansible_userspace_architecture":+"x86_64",
"ansible_userspace_bits":+"64",
"ansible_virtualization_role":+"guest",
"ansible_virtualization_type":+"VMware"|code-block|syntax|javascript|238475|entityMap|0|LINK|mutability|MUTABLE|url|http://docs.ansible.com/ansible/playbooks_variables.html#information-discovered-from-systems-facts^0|E|2Q|0|0|0^^$0|@$1|2|3|4|5|6|7|Q|8|@]|9|@$A|R|B|S|1|T]]|C|$]]|$1|D|3|E|5|F|7|U|8|@]|9|@]|C|$G|H]]|$1|I|3|-4|5|6|7|V|8|@]|9|@]|C|$]]]|J|$K|$5|L|M|N|C|$O|P]]]]

There is lot of variables defined as Facts -- <a href="http://docs.ansible.com/ansible/playbooks_variables.html#information-discovered-from-systems-facts" rel="noreferrer">http://docs.ansible.com/ansible/playbooks_variables.html#information-discovered-from-systems-facts</a>

<pre><code>"ansible_all_ipv4_addresses": [
 "REDACTED IP ADDRESS"
],
"ansible_all_ipv6_addresses": [
 "REDACTED IPV6 ADDRESS"
],
"ansible_architecture": "x86_64",
"ansible_bios_date": "09/20/2012",
"ansible_bios_version": "6.00",
"ansible_cmdline": {
 "BOOT_IMAGE": "/boot/vmlinuz-3.5.0-23-generic",
 "quiet": true,
 "ro": true,
 "root": "UUID=4195bff4-e157-4e41-8701-e93f0aec9e22",
 "splash": true
},
"ansible_date_time": {
 "date": "2013-10-02",
 "day": "02",
 "epoch": "1380756810",
 "hour": "19",
 "iso8601": "2013-10-02T23:33:30Z",
 "iso8601_micro": "2013-10-02T23:33:30.036070Z",
 "minute": "33",
 "month": "10",
 "second": "30",
 "time": "19:33:30",
 "tz": "EDT",
 "year": "2013"
},
"ansible_default_ipv4": {
 "address": "REDACTED",
 "alias": "eth0",
 "gateway": "REDACTED",
 "interface": "eth0",
 "macaddress": "REDACTED",
 "mtu": 1500,
 "netmask": "255.255.255.0",
 "network": "REDACTED",
 "type": "ether"
},
"ansible_default_ipv6": {},
"ansible_devices": {
 "fd0": {
 "holders": [],
 "host": "",
 "model": null,
 "partitions": {},
 "removable": "1",
 "rotational": "1",
 "scheduler_mode": "deadline",
 "sectors": "0",
 "sectorsize": "512",
 "size": "0.00 Bytes",
 "support_discard": "0",
 "vendor": null
 },
 "sda": {
 "holders": [],
 "host": "SCSI storage controller: LSI Logic / Symbios Logic 53c1030 PCI-X Fusion-MPT Dual Ultra320 SCSI (rev 01)",
 "model": "VMware Virtual S",
 "partitions": {
 "sda1": {
 "sectors": "39843840",
 "sectorsize": 512,
 "size": "19.00 GB",
 "start": "2048"
 },
 "sda2": {
 "sectors": "2",
 "sectorsize": 512,
 "size": "1.00 KB",
 "start": "39847934"
 },
 "sda5": {
 "sectors": "2093056",
 "sectorsize": 512,
 "size": "1022.00 MB",
 "start": "39847936"
 }
 },
 "removable": "0",
 "rotational": "1",
 "scheduler_mode": "deadline",
 "sectors": "41943040",
 "sectorsize": "512",
 "size": "20.00 GB",
 "support_discard": "0",
 "vendor": "VMware,"
 },
 "sr0": {
 "holders": [],
 "host": "IDE interface: Intel Corporation 82371AB/EB/MB PIIX4 IDE (rev 01)",
 "model": "VMware IDE CDR10",
 "partitions": {},
 "removable": "1",
 "rotational": "1",
 "scheduler_mode": "deadline",
 "sectors": "2097151",
 "sectorsize": "512",
 "size": "1024.00 MB",
 "support_discard": "0",
 "vendor": "NECVMWar"
 }
},
"ansible_distribution": "Ubuntu",
"ansible_distribution_release": "precise",
"ansible_distribution_version": "12.04",
"ansible_domain": "",
"ansible_env": {
 "COLORTERM": "gnome-terminal",
 "DISPLAY": ":0",
 "HOME": "/home/mdehaan",
 "LANG": "C",
 "LESSCLOSE": "/usr/bin/lesspipe %s %s",
 "LESSOPEN": "| /usr/bin/lesspipe %s",
 "LOGNAME": "root",
 "LS_COLORS": "rs=0:di=01;34:ln=01;36:mh=00:pi=40;33:so=01;35:do=01;35:bd=40;33;01:cd=40;33;01:or=40;31;01:su=37;41:sg=30;43:ca=30;41:tw=30;42:ow=34;42:st=37;44:ex=01;32:*.tar=01;31:*.tgz=01;31:*.arj=01;31:*.taz=01;31:*.lzh=01;31:*.lzma=01;31:*.tlz=01;31:*.txz=01;31:*.zip=01;31:*.z=01;31:*.Z=01;31:*.dz=01;31:*.gz=01;31:*.lz=01;31:*.xz=01;31:*.bz2=01;31:*.bz=01;31:*.tbz=01;31:*.tbz2=01;31:*.tz=01;31:*.deb=01;31:*.rpm=01;31:*.jar=01;31:*.war=01;31:*.ear=01;31:*.sar=01;31:*.rar=01;31:*.ace=01;31:*.zoo=01;31:*.cpio=01;31:*.7z=01;31:*.rz=01;31:*.jpg=01;35:*.jpeg=01;35:*.gif=01;35:*.bmp=01;35:*.pbm=01;35:*.pgm=01;35:*.ppm=01;35:*.tga=01;35:*.xbm=01;35:*.xpm=01;35:*.tif=01;35:*.tiff=01;35:*.png=01;35:*.svg=01;35:*.svgz=01;35:*.mng=01;35:*.pcx=01;35:*.mov=01;35:*.mpg=01;35:*.mpeg=01;35:*.m2v=01;35:*.mkv=01;35:*.webm=01;35:*.ogm=01;35:*.mp4=01;35:*.m4v=01;35:*.mp4v=01;35:*.vob=01;35:*.qt=01;35:*.nuv=01;35:*.wmv=01;35:*.asf=01;35:*.rm=01;35:*.rmvb=01;35:*.flc=01;35:*.avi=01;35:*.fli=01;35:*.flv=01;35:*.gl=01;35:*.dl=01;35:*.xcf=01;35:*.xwd=01;35:*.yuv=01;35:*.cgm=01;35:*.emf=01;35:*.axv=01;35:*.anx=01;35:*.ogv=01;35:*.ogx=01;35:*.aac=00;36:*.au=00;36:*.flac=00;36:*.mid=00;36:*.midi=00;36:*.mka=00;36:*.mp3=00;36:*.mpc=00;36:*.ogg=00;36:*.ra=00;36:*.wav=00;36:*.axa=00;36:*.oga=00;36:*.spx=00;36:*.xspf=00;36:",
 "MAIL": "/var/mail/root",
 "OLDPWD": "/root/ansible/docsite",
 "PATH": "/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin",
 "PWD": "/root/ansible",
 "SHELL": "/bin/bash",
 "SHLVL": "1",
 "SUDO_COMMAND": "/bin/bash",
 "SUDO_GID": "1000",
 "SUDO_UID": "1000",
 "SUDO_USER": "mdehaan",
 "TERM": "xterm",
 "USER": "root",
 "USERNAME": "root",
 "XAUTHORITY": "/home/mdehaan/.Xauthority",
 "_": "/usr/local/bin/ansible"
},
"ansible_eth0": {
 "active": true,
 "device": "eth0",
 "ipv4": {
 "address": "REDACTED",
 "netmask": "255.255.255.0",
 "network": "REDACTED"
 },
 "ipv6": [
 {
 "address": "REDACTED",
 "prefix": "64",
 "scope": "link"
 }
 ],
 "macaddress": "REDACTED",
 "module": "e1000",
 "mtu": 1500,
 "type": "ether"
},
"ansible_form_factor": "Other",
"ansible_fqdn": "ubuntu2.example.com",
"ansible_hostname": "ubuntu2",
"ansible_interfaces": [
 "lo",
 "eth0"
],
"ansible_kernel": "3.5.0-23-generic",
"ansible_lo": {
 "active": true,
 "device": "lo",
 "ipv4": {
 "address": "127.0.0.1",
 "netmask": "255.0.0.0",
 "network": "127.0.0.0"
 },
 "ipv6": [
 {
 "address": "::1",
 "prefix": "128",
 "scope": "host"
 }
 ],
 "mtu": 16436,
 "type": "loopback"
},
"ansible_lsb": {
 "codename": "precise",
 "description": "Ubuntu 12.04.2 LTS",
 "id": "Ubuntu",
 "major_release": "12",
 "release": "12.04"
},
"ansible_machine": "x86_64",
"ansible_memfree_mb": 74,
"ansible_memtotal_mb": 991,
"ansible_mounts": [
 {
 "device": "/dev/sda1",
 "fstype": "ext4",
 "mount": "/",
 "options": "rw,errors=remount-ro",
 "size_available": 15032406016,
 "size_total": 20079898624
 }
],
"ansible_nodename": "ubuntu2.example.com",
"ansible_os_family": "Debian",
"ansible_pkg_mgr": "apt",
"ansible_processor": [
 "Intel(R) Core(TM) i7 CPU 860 @ 2.80GHz"
],
"ansible_processor_cores": 1,
"ansible_processor_count": 1,
"ansible_processor_threads_per_core": 1,
"ansible_processor_vcpus": 1,
"ansible_product_name": "VMware Virtual Platform",
"ansible_product_serial": "REDACTED",
"ansible_product_uuid": "REDACTED",
"ansible_product_version": "None",
"ansible_python_version": "2.7.3",
"ansible_selinux": false,
"ansible_ssh_host_key_dsa_public": "REDACTED KEY VALUE"
"ansible_ssh_host_key_ecdsa_public": "REDACTED KEY VALUE"
"ansible_ssh_host_key_rsa_public": "REDACTED KEY VALUE"
"ansible_swapfree_mb": 665,
"ansible_swaptotal_mb": 1021,
"ansible_system": "Linux",
"ansible_system_vendor": "VMware, Inc.",
"ansible_user_id": "root",
"ansible_userspace_architecture": "x86_64",
"ansible_userspace_bits": "64",
"ansible_virtualization_role": "guest",
"ansible_virtualization_type": "VMware"
</code></pre>

I see that Ansible provide some pre-defined variables that we can use in playbooks and template files. For example, the host IP address is <code>ansible_eth0.ipv4.address</code>. Googleing and searching the docs I couldn't find a list of all available variables. 
Would someone list them for me?

Where can I get a list of Ansible pre-defined variables?

服务器

Ubuntu

Debian

Linux

我看到Ansible提供了一些我们可以在攻略和模板文件中使用的预定义变量。例如，主机IP地址为ansible_eth0.ipv4.address。通过谷歌搜索文档，我找不到所有可用变量的列表。有人能帮我把它们列出来吗？

问我可以在哪里得到Ansible预定义变量的列表？
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问我可以在哪里得到Ansible预定义变量的列表？
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