7，ansible7

当主机为12时，才执行debug
[root@es1 playbook-demo]# cat demo10.yml 
---
- hosts: webservers
  tasks:
  - name: Host 192.168.0.12 run this task
    debug: msg="{{ansible_default_ipv4.address}}"
    when: ansible_default_ipv4.address == '192.168.0.12'
[root@es1 playbook-demo]# 
[root@es1 playbook-demo]# ansible-playbook demo10.yml --syntax-check

playbook: demo10.yml
[root@es1 playbook-demo]# ansible-playbook demo10.yml

PLAY [webservers] ********************************************************************************************************************************************************************************

TASK [Gathering Facts] ***************************************************************************************************************************************************************************
ok: [192.168.0.12]
ok: [192.168.0.13]

TASK [Host 192.168.1.12 run this task] ***********************************************************************************************************************************************************
skipping: [192.168.0.12]
skipping: [192.168.0.13]

PLAY RECAP ***************************************************************************************************************************************************************************************
192.168.0.12               : ok=1    changed=0    unreachable=0    failed=0    skipped=1    rescued=0    ignored=0   
192.168.0.13               : ok=1    changed=0    unreachable=0    failed=0    skipped=1    rescued=0    ignored=0   

[root@es1 playbook-demo]# 




[root@es1 playbook-demo]# cat demo11.yml 
---
- hosts: webservers
  tasks:
  - name: "echo  CentOS 6 and Debian 7 systems"
    command: echo 'aaa'
    when: (ansible_distribution == "CentOS" and ansible_distribution_major_version == "7") or (ansible_distribution == "Debian" and ansible_distribution_major_version == "7")
[root@es1 playbook-demo]# 
[root@es1 playbook-demo]# 
[root@es1 playbook-demo]# 
[root@es1 playbook-demo]# ansible-playbook demo11.yml --syntax-check

playbook: demo11.yml
[root@es1 playbook-demo]# 


循环一个序列和循环一个字典：
[root@es1 playbook-demo]# cat demo12.yml 
---
- hosts: webservers
  gather_facts: no
  tasks:
  - name: with_list -> loop
    debug:
      msg: "{{ item }}"
    loop:
      - one
      - two
[root@es1 playbook-demo]# 
[root@es1 playbook-demo]# ansible-playbook demo12.yml --syntax-check

playbook: demo12.yml
[root@es1 playbook-demo]# 
[root@es1 playbook-demo]# ansible-playbook demo12.yml 

PLAY [webservers] *****************************************************************************************************************

TASK [with_list -> loop] **********************************************************************************************************
ok: [192.168.0.12] => (item=one) => {
    "msg": "one"
}
ok: [192.168.0.12] => (item=two) => {
    "msg": "two"
}
ok: [192.168.0.13] => (item=one) => {
    "msg": "one"
}
ok: [192.168.0.13] => (item=two) => {
    "msg": "two"
}

PLAY RECAP ************************************************************************************************************************
192.168.0.12               : ok=1    changed=0    unreachable=0    failed=0    skipped=0    rescued=0    ignored=0   
192.168.0.13               : ok=1    changed=0    unreachable=0    failed=0    skipped=0    rescued=0    ignored=0   

[root@es1 playbook-demo]#





[root@es1 playbook-demo]# cat demo13.yml 
---
- hosts: webservers
  tasks:
    - name: with_items
      #debug: msg="{{item}}"
      user: name={{item.name}} groups={{item.groups}} state=present
      with_items:
        - {name: 'zhangsan',groups: 'nginx'}
        - {name: 'lisi',groups: 'nginx'}
[root@es1 playbook-demo]# 
[root@es1 playbook-demo]# 
[root@es1 playbook-demo]# ansible-playbook demo13.yml --syntax-check

playbook: demo13.yml
[root@es1 playbook-demo]# 
[root@es1 playbook-demo]# ansible-playbook demo13.yml

PLAY [webservers] ********************************************************************************************************************************************************************************

TASK [Gathering Facts] ***************************************************************************************************************************************************************************
ok: [192.168.0.12]
ok: [192.168.0.13]

TASK [with_items] ********************************************************************************************************************************************************************************
changed: [192.168.0.12] => (item={u'name': u'zhangsan', u'groups': u'nginx'})
changed: [192.168.0.13] => (item={u'name': u'zhangsan', u'groups': u'nginx'})
changed: [192.168.0.12] => (item={u'name': u'lisi', u'groups': u'nginx'})
changed: [192.168.0.13] => (item={u'name': u'lisi', u'groups': u'nginx'})

PLAY RECAP ***************************************************************************************************************************************************************************************
192.168.0.12               : ok=2    changed=1    unreachable=0    failed=0    skipped=0    rescued=0    ignored=0   
192.168.0.13               : ok=2    changed=1    unreachable=0    failed=0    skipped=0    rescued=0    ignored=0   

[root@es1 playbook-demo]#