Ansible

http://www.ansible.com.cn/index.html

ansible通过SSH来远程管理Linux/Unix机器．

ansible通过winrm+powershell来远程管理Windows机器．

安装:

$ sudo pip install ansible
$ sudo apt-get install ansible
$ sudo yum install ansible

配置：

参考Network-SSH实现从controller到所有node的无密码登陆

配置文件执行顺序:

ANSIBLE_CONFIG
ansible.cfg
.ansible.cfg
/etc/ansible/ansible.cfg

手动配置:

$ sudo vim /etc/ansible/ansible.cfg
[defaults]
ask_pass = False
host_key_checking = False

ansible命令

ansible运行命令的两种方式：

Ad-hoc相当于直接运行shell命令
playbooks相当于运行shell脚本

ansible:

$ ansible -i inventory group1:group1:group3/all ...

$ansible --help
-m MODULE_NAME, --module-name=MODULE_NAME # 执行模块，默认是command
-M MODULE_PATH, --module-path=MODULE_PATH # 指定模块的路径
-a MODULE_ARGS, --args=MODULE_ARGS # 模块的参数
-i INVENTORY, --inventory INVENTORY # 默认/etc/ansible/hosts, 需要指定hosts分组
-f FORKS, --forks=FORKS # 指定并发进程的数量
-C, --check
-D, --diff
-l SUBSET, --limit=SUBSET
--syntax-check
--list-hosts
-v, --verbose # -v, -vvv, -vvvv

# 提权选项
-b, --become
--become-method=BECOME_METHOD # sudo(default)/su/pbrun/pfexec/runas/doas
--become-user=BECOME_USER # root(default)
-K, --ask-become-pass

# 连接选项
-u REMOTE_USER
--ssh-common-args
--ssh-extra-args
-T TIMEOUT # default 10s
-K, --ask-pass

inventory

inventory包括主机和分组,以及主机变量和分组变量.

可以是ini格式，也可以是yaml格式.

$ sudo vim /etc/ansible/hosts

ini格式:

定义主机和主机变量
[host1]
node1 
ansible_connection=ssh 
ansible_host=host 
ansible_port=port 
ansible_user=user 
ansible_ssh_pass=password

定义分组和分组变量
[group1]
node1
node2
[group1:vars]
ansible_connection=local/smart/ssh/paramiko
ansible_host=
ansible_port=
ansible_user=
ansible_ssh_pass=
ansible_ssh_common_args=
ansible_ssh_extra_args=
ansible_become=
ansible_become_method=
ansible_become_user=
ansible_become_pass=
ansible_become_exe=
ansible_become_flags=

定义分组的分组, children是固定写法
[big-group:children]
group1
group2

yaml:

all:
  hosts:    # 定义主机和主机变量
    node1:
      ansible_host:
      ip:
      access_ip:
  children:    # 定义分组和分组变量
    group1:
      hosts:
        node1:
      vars:
        key: value
    group2:
      hosts:
        node2:
      vars:
        key: value
    big-group: # 定义分组的分组
      children:
        group1:
          hosts:
            node1:
        group2:
          hosts:
            node2:

module

module也就是所说的task plugins/library plugins.

$ ansible-doc -l/--list #　查看所有已经安装的模块

commands modules：

command # 默认模块，用于在远程机器上执行命令
shell # 和command相同，只是该模块支持管道和特殊字符，一般用来执行脚本和复杂命令
raw
expect
script
telnet

files modules:

copy src dest mode ...
synchronize src dest ...

package modules:

apt name/deb state=present/absent/latest/build-dep update_cache autoclean autoremove
apt_repository repo state=present/absent
apt_rpm pkg state=present/absent
yum name state=present/absent/latest/installed/removed

adhoc

$ ansible group -m <module> -a <args> ...

copy:

$ ansible group -m copy -a "src=/sr dest=/dest mode=0655"

playbooks

playbook的格式是YAML.

$ ansible-playbook -i inventory playbook.yaml -K -vvv > output.txt
-i INVENTORY, --inventory INVENTORY # 默认/etc/ansible/hosts, 在playbook中指定hosts分组，而不是命令行

- hosts: host-or-group
  remote_user: user

  task:
  - name: task name.
    module: args

variables:

register: var   # 用var来存储task的结果,查看不同模块的返回值．

become:

become: true
become_user: root
become_method: sudo
become_flags:

debug:

strategy: debug

awx

ansible的web管理界面.

https://github.com/ansible/awx

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