Loop循环
loop:循环属于当前任务的一个功能，归属于-name下面
循环中，提供一个个数据的项，每一项都要由- 定义
它会一项项重复执行当前的任务，每执行一次就会提取一项值，交给变量{{ item }}
注意:当前循环只对当前的任务有效的，任务执行的时相同功能
[root@ansible ~]# vi an-9.yml
[root@ansible ~]# cat an-9.yml
- hosts: webservers
tasks:
- name: 循环创建文件
shell: "touch {{ item }}"
args:
chdir: /opt
loop:
- zhangsan.txt
- lisi.txt
- wangwu.txt
- xiyangyang.txt
[root@ansible ~]# ansible-playbook an-9.yml
PLAY [webservers] ***************************************************************************************************************************************
TASK [Gathering Facts] **********************************************************************************************************************************
ok: [192.168.92.20]
TASK [循环创建文件] *************************************************************************************************************************************
changed: [192.168.92.20] => (item=zhangsan.txt)
changed: [192.168.92.20] => (item=lisi.txt)
changed: [192.168.92.20] => (item=wangwu.txt)
changed: [192.168.92.20] => (item=xiyangyang.txt)
PLAY RECAP **********************************************************************************************************************************************
192.168.92.20 : ok=2 changed=1 unreachable=0 failed=0 skipped=0 rescued=0 ignored=0循环遍历的属性
[root@ansible ~]# vi an-10.yml
[root@ansible ~]# cat an-10.yml
- hosts: webservers
tasks:
- name: 创建用户组
group:
name: "{{ item }}"
state: present
loop:
- gp1
- gp2
- gp3
- name: 创建用户并设置基本组
user:
name: "{{ item.uname }}"
group: "{{ item.group }}"
state: present
loop:
- { uname: test1, group: gp1 }
- { uname: test2, group: gp2 }
- { uname: test3, group: gp3 }
[root@ansible ~]# ansible-playbook an-10.yml
PLAY [webservers] ***************************************************************************************************************************************
TASK [Gathering Facts] **********************************************************************************************************************************
ok: [192.168.92.20]
TASK [创建用户组] ***************************************************************************************************************************************
changed: [192.168.92.20] => (item=gp1)
changed: [192.168.92.20] => (item=gp2)
changed: [192.168.92.20] => (item=gp3)
TASK [创建用户并设置基本组] *****************************************************************************************************************************
changed: [192.168.92.20] => (item={'uname': 'test1', 'group': 'gp1'})
changed: [192.168.92.20] => (item={'uname': 'test2', 'group': 'gp2'})
changed: [192.168.92.20] => (item={'uname': 'test3', 'group': 'gp3'})
PLAY RECAP **********************************************************************************************************************************************
192.168.92.20 : ok=3 changed=2 unreachable=0 failed=0 skipped=0 rescued=0 ignored=0
[root@ansible ~]#Notify和Handlers
[root@ansible ~]# vi an-11.yml
[root@ansible ~]# cat an-11.yml
# handlers 是一个触发器，同时也是 tasks 任务（不会直接运行，需要被触发）
# notify 就是通知
# 安装 httpd 服务器，然后下发更改后的配置文件，当被控端发生改变时就重启服务
- hosts: webservers
tasks:
- name: 安装 httpd
yum:
name: httpd
state: latest
- name: 启动 httpd 服务
service:
name: httpd
state: started
[root@ansible ~]# ansible-playbook an-11.yml
PLAY [webservers] ***************************************************************************************************************************************
TASK [Gathering Facts] **********************************************************************************************************************************
ok: [192.168.92.20]
TASK [安装 httpd] ***************************************************************************************************************************************
ok: [192.168.92.20]
TASK [启动 httpd 服务] **********************************************************************************************************************************
ok: [192.168.92.20]
PLAY RECAP **********************************************************************************************************************************************
192.168.92.20 : ok=3 changed=0 unreachable=0 failed=0 skipped=0 rescued=0 ignored=0
[root@web20h ~]# scp /etc/httpd/conf/httpd.conf root@192.168.92.19:/root
The authenticity of host '192.168.92.19 (192.168.92.19)' can't be established.
ED25519 key fingerprint is SHA256:TtJq+VxSoGlLTkPvOJuAU+TJ+MZsYo6TuFHufmCOTeI.
This key is not known by any other names
Are you sure you want to continue connecting (yes/no/[fingerprint])? yes
Warning: Permanently added '192.168.92.19' (ED25519) to the list of known hosts.
root@192.168.92.19's password:
httpd.conf
[root@ansible ~]# ls
3.26.sh an-1.yml an-11.yml an-3.yml an-5.yml an-7.yml an-9.yml bianliang.yml cp.txt host_vars replace.txt
a.txt an-10.yml an-2.yml an-4.yml an-6.yml an-8.yml anaconda-ks.cfg cp.tar.gz group_vars httpd.conf
[root@ansible ~]# vi httpd.conf
Listen 66 #改了一下监听端口
[root@ansible ~]# vi an-11.yml
[root@ansible ~]# cat an-11.yml
# handlers 是一个触发器，同时也是 tasks 任务（不会直接运行，需要被触发）
# Notify 就是通知
# 安装 httpd 服务器，然后下发更改后的配置文件，当被控端发生改变时就重启服务
- hosts: webservers
tasks:
- name: 安装 httpd
yum:
name: httpd
state: latest
- name: 启动 httpd 服务
service:
name: httpd
state: started
- name: 下发配置文件
copy:
src: /root/httpd.conf
dest: /etc/httpd/conf/httpd.conf
owner: root
mode: '664'
notify: restart httpd
handlers:
- name: restart httpd
service:
name: httpd
state: restarted
[root@ansible ~]# ansible-playbook an-11.yml
PLAY [webservers] ***************************************************************************************************************************************
TASK [Gathering Facts] **********************************************************************************************************************************
ok: [192.168.92.20]
TASK [安装 httpd] ***************************************************************************************************************************************
ok: [192.168.92.20]
TASK [启动 httpd 服务] **********************************************************************************************************************************
ok: [192.168.92.20]
TASK [下发配置文件] *************************************************************************************************************************************
changed: [192.168.92.20]
RUNNING HANDLER [restart httpd] *************************************************************************************************************************
changed: [192.168.92.20]
PLAY RECAP **********************************************************************************************************************************************
192.168.92.20 : ok=5 changed=2 unreachable=0 failed=0 skipped=0 rescued=0 ignored=0 100% 12KB 7.7MB/s 00:00