ansible 配置文件的学习

ycycoco

# config file for ansible -- http://ansible.com/　　# ==============================================
　　# nearly all parameters can be overridden in ansible-playbook
　　# or with command line flags. ansible will read ANSIBLE_CONFIG,
　　# ansible.cfg in the current working directory, .ansible.cfg in
　　# the home directory or /etc/ansible/ansible.cfg, whichever it
　　# finds first

[defaults]   --->通用默认配置

　　# some basic default values...
　　inventory      = /etc/ansible/hosts     这个是默认库文件位置,脚本,或者存放可通信主机的目录
　　#library        = /usr/share/my_modules/   Ansible默认搜寻模块的位置
　　remote_tmp     = $HOME/.ansible/tmp   Ansible 通过远程传输模块到远程主机,然后远程执行,执行后在清理现场.在有些场景下,你也许想使用默认路径希望像更换补丁一样使用
　　pattern        = *    如果没有提供“hosts”节点,这是playbook要通信的默认主机组.默认值是对所有主机通信
　　forks          = 5    在与主机通信时的默认并行进程数 ，默认是5d
　　poll_interval  = 15    当具体的poll interval 没有定义时,多少时间回查一下这些任务的状态, 默认值是5秒
　　sudo_user      = root   sudo使用的默认用户 ，默认是root
　　#ask_sudo_pass = True   用来控制Ansible playbook 在执行sudo之前是否询问sudo密码.默认为no
　　#ask_pass      = True    控制Ansible playbook 是否会自动默认弹出密码
　　transport      = smart   通信机制.默认 值为’smart’。如果本地系统支持 ControlPersist技术的话,将会使用(基于OpenSSH)‘ssh’,如果不支持讲使用‘paramiko’.其他传输选项包括‘local’, ‘chroot’,’jail’等等
　　#remote_port    = 22    远程SSH端口。 默认是22
　　module_lang    = C   模块和系统之间通信的计算机语言，默认是C语言
　　# plays will gather facts by default, which contain information about
　　# the remote system.
　　#
　　# smart - gather by default, but don't regather if already gathered
　　# implicit - gather by default, turn off with gather_facts: False
　　# explicit - do not gather by default, must say gather_facts: True
　　gathering = implicit   控制默认facts收集（远程系统变量）. 默认值为’implicit’, 每一次play,facts都会被收集
　　# additional paths to search for roles in, colon separated
　　#roles_path    = /etc/ansible/roles   roles 路径指的是’roles/’下的额外目录,用于playbook搜索Ansible roles
　　# uncomment this to disable SSH key host checking
　　#host_key_checking = False    检查主机密钥

　　# change this for>　　sudo_exe = sudo     如果在其他远程主机上使用另一种方式执sudu操作.可以使用该参数进行更换
　　# what flags to pass to sudo   传递sudo之外的参数
　　#sudo_flags = -H
　　# SSH timeout    SSH超时时间
　　timeout = 10
　　# default user to use for playbooks if user is not specified
　　# (/usr/bin/ansible will use current user as default)
　　#remote_user = root   使用/usr/bin/ansible-playbook链接的默认用户名，如果不指定，会使用当前登录的用户名
　　# logging is off by default unless this path is defined
　　# if so defined, consider logrotate
　　#log_path = /var/log/ansible.log     日志文件存放路径
　　# default module name for /usr/bin/ansible
　　#module_name = command     ansible命令执行默认的模块
　　# use this shell for commands executed under sudo
　　# you may need to change this to bin/bash in rare instances
　　# if sudo is constrained
　　#executable = /bin/sh     在sudo环境下产生一个shell交互接口. 用户只在/bin/bash的或者sudo限制的一些场景中需要修改
　　# if inventory variables overlap, does the higher precedence one win
　　# or are hash values merged together?  The default is 'replace' but
　　# this can also be set to 'merge'.
　　#hash_behaviour = replace    特定的优先级覆盖变量
　　# list any Jinja2 extensions to enable here:
　　#jinja2_extensions = jinja2.ext.do,jinja2.ext.i18n      允许开启Jinja2拓展模块
　　# if set, always use this private key file for authentication, same as
　　# if passing --private-key to ansible or ansible-playbook
　　#private_key_file = /path/to/file         私钥文件存储位置
　　# format of string {{ ansible_managed }} available within Jinja2
　　# templates indicates to users editing templates files will be replaced.
　　# replacing {file}, {host} and {uid} and strftime codes with proper values.
　　ansible_managed = Ansible managed: {file} modified on %Y-%m-%d %H:%M:%S by {uid} on {host}   这个设置可以告知用户,Ansible修改了一个文件,并且手动写入的内容可能已经被覆盖.
　　# by default, ansible-playbook will display "Skipping [host]" if it determines a task
　　# should not be run on a host.  Set this to "False" if you don't want to see these "Skipping"
　　
    # messages. NOTE: the task header will still be shown regardless of whether or not the
　　# task is skipped.
　　#display_skipped_hosts = True     显示任何跳过任务的状态 ，默认是显示
　　# by default (as of 1.3), Ansible will raise errors when attempting to dereference
　　# Jinja2 variables that are not set in templates or action lines. Uncomment this line
　　# to revert the behavior to pre-1.3.
　　#error_on_undefined_vars = False      如果所引用的变量名称错误的话, 将会导致ansible在执行步骤上失败
　　# by default (as of 1.6), Ansible may display warnings based on the configuration of the
　　# system running ansible itself. This may include warnings about 3rd party packages or
　　# other conditions that should be resolved if possible.
　　# to disable these warnings, set the following value to False:
　　#system_warnings = True    允许禁用系统运行ansible相关的潜在问题警告
　　# by default (as of 1.4), Ansible may display deprecation warnings for language
　　# features that should no longer be used and will be removed in future versions.
　　# to disable these warnings, set the following value to False:
　　#deprecation_warnings = True     允许在ansible-playbook输出结果中禁用“不建议使用”警告
　　# (as of 1.8), Ansible can optionally warn when usage of the shell and
　　# command module appear to be simplified by using a default Ansible module
　　# instead.  These warnings can be silenced by adjusting the following
　　# setting or adding warn=yes or warn=no to the end of the command line
　　# parameter string.  This will for example suggest using the git module
　　# instead of shelling out to the git command.
　　# command_warnings = False    当shell和命令行模块被默认模块简化的时,Ansible 将默认发出警告
　　# set plugin path directories here, separate with colons
　　action_plugins     = /usr/share/ansible_plugins/action_plugins
　　callback_plugins   = /usr/share/ansible_plugins/callback_plugins
　　connection_plugins = /usr/share/ansible_plugins/connection_plugins
　　lookup_plugins     = /usr/share/ansible_plugins/lookup_plugins
　　vars_plugins       = /usr/share/ansible_plugins/vars_plugins
　　filter_plugins     = /usr/share/ansible_plugins/filter_plugins
　　# by default callbacks are not loaded for /bin/ansible, enable this if you
　　# want, for example, a notification or logging callback to also apply to
　　# /bin/ansible runs
　　#bin_ansible_callbacks = False    用来控制callback插件是否在运行 /usr/bin/ansible 的时候被加载. 这个模块将用于命令行的日志系统,发出通知等特性
　　# don't like cows?  that's unfortunate.
　　# set to 1 if you don't want cowsay support or export ANSIBLE_NOCOWS=1
　　#nocows = 1    默认ansible可以调用一些cowsay的特性   开启/禁用：0/1
　　# don't like colors either?
　　# set to 1 if you don't want colors, or export ANSIBLE_NOCOLOR=1
　　#nocolor = 1  输出带上颜色区别， 开启/关闭：0/1
　　# the CA certificate path used for validating SSL certs. This path
　　# should exist on the controlling node, not the target nodes
　　# common locations:
　　# RHEL/CentOS: /etc/pki/tls/certs/ca-bundle.crt
　　# Fedora     : /etc/pki/ca-trust/extracted/pem/tls-ca-bundle.pem
　　# Ubuntu     : /usr/share/ca-certificates/cacert.org/cacert.org.crt
　　#ca_file_path =
　　# the http user-agent string to use when fetching urls. Some web server
　　# operators block the default urllib user agent as it is frequently used
　　# by malicious attacks/scripts, so we set it to something unique to
　　# avoid issues.
　　#http_user_agent = ansible-agent
　　# if set to a persistent type (not 'memory', for example 'redis') fact values
　　# from previous runs in Ansible will be stored.  This may be useful when
　　# wanting to use, for example, IP information from one group of servers
　　# without having to talk to them in the same playbook run to get their
　　# current IP information.
　　fact_caching = memory
　　# retry files
　　#retry_files_enabled = False
　　#retry_files_save_path = ~/.ansible-retry

[privilege_escalation]

　　#become=True
　　#become_method=sudo
　　#become_user=root
　　#become_ask_pass=False

[paramiko_connection]

　　# uncomment this line to cause the paramiko connection plugin to not record new host
　　# keys encountered.  Increases performance on new host additions.  Setting works independently of the
　　# host key checking setting above.
　　#record_host_keys=False
　　# by default, Ansible requests a pseudo-terminal for commands executed under sudo. Uncomment this
　　# line to disable this behaviour.
　　#pty=False

[ssh_connection]

　　# ssh arguments to use
　　# Leaving off ControlPersist will result in poor performance, so use
　　# paramiko on older platforms rather than removing it
　　#ssh_args = -o ControlMaster=auto -o ControlPersist=60s
　　# The path to use for the ControlPath sockets. This defaults to
　　# "%(directory)s/ansible-ssh-%%h-%%p-%%r", however on some systems with
　　# very long hostnames or very long path names (caused by long user names or
　　# deeply nested home directories) this can exceed the character limit on
　　# file socket names (108 characters for most platforms). In that case, you
　　# may wish to shorten the string below.
　　#
　　# Example:
　　# control_path = %(directory)s/%%h-%%r
　　#control_path = %(directory)s/ansible-ssh-%%h-%%p-%%r
　　# Enabling pipelining reduces the number of SSH operations required to
　　# execute a module on the remote server. This can result in a significant
　　# performance improvement when enabled, however when using "sudo:" you must
　　# first disable 'requiretty' in /etc/sudoers
　　#
　　# By default, this option is disabled to preserve compatibility with
　　# sudoers configurations that have requiretty (the default on many distros).
　　#
　　#pipelining = False
　　# if True, make ansible use scp if the connection type is ssh
　　# (default is sftp)
　　#scp_if_ssh = True

[accelerate]

　　accelerate_port = 5099
　　accelerate_timeout = 30
　　accelerate_connect_timeout = 5.0
　　# The daemon timeout is measured in minutes. This time is measured
　　# from the last activity to the accelerate daemon.
　　accelerate_daemon_timeout = 30
　　# If set to yes, accelerate_multi_key will allow multiple
　　# private keys to be uploaded to it, though each user must
　　# have access to the system via SSH to add a new key. The default
　　# is "no".
　　#accelerate_multi_key = yes

[selinux]

　　# file systems that require special treatment when dealing with security context
　　# the default behaviour that copies the existing context or uses the user default
　　# needs to be changed to use the file system dependant context.
　　#special_context_filesystems=nfs,vboxsf,fuse