04-25

1、playbook

什么是playbook？
把所有操作按照ansible编成语法，放在文件里执行就是playbook。

2、ansible剧本编写格式说明

ansible剧本遵循PYyaml语法规则进行编写，yaml
规则一：缩进
yaml使用一个固定的
会泽二：冒号
规则三：短横线
想要表示列表项，使用一个短横杠加一个空格。多个项使用同样的缩进级别

实践：编写剧本

实践1

ansible oldboy -m shell -a "echo oldboy linux. >/tmp/oldboy.log"
把这行命令写成剧本：
mkdir -p /etc/ansible/yaml
cd  /etc/ansible/yaml
vim p1.yml
开始编写：

[root@waiwai /etc/ansible/yaml]# cat p1.yml 
- hosts: oldboy
  tasks:
    - name: Create alog file
      shell: echo oldboy linux. >/tmp/oldboy.log

执行
[root@waiwai /etc/ansible/yaml]# ansible-playbook -C /etc/ansible/yaml/p1.yml 

PLAY [oldboy] **************************************************************************

TASK [Gathering Facts] *****************************************************************

ok: [172.16.1.41]
ok: [172.16.1.31]

TASK [Create alog file] ****************************************************************
skipping: [172.16.1.31]
skipping: [172.16.1.41]

PLAY RECAP *****************************************************************************
172.16.1.31                : ok=1    changed=0    unreachable=0    failed=0   
172.16.1.41                : ok=1    changed=0    unreachable=0    failed=0  

实践2
[root@waiwai /etc/ansible/yaml]# cat p3.yml 
- hosts: oldboy
  remote_user: root
  tasks:
    - name: Create New file
      file: name=/tmp/oldboy1 state=touch

执行
[root@waiwai /etc/ansible/yaml]# ansible-playbook  /etc/ansible/yaml/p3.yml 

PLAY [oldboy] **************************************************************************

TASK [Gathering Facts] *****************************************************************
ok: [172.16.1.41]
ok: [172.16.1.31]

TASK [Create New file] *****************************************************************
changed: [172.16.1.41]
changed: [172.16.1.31]

PLAY RECAP *****************************************************************************
172.16.1.31                : ok=2    changed=1    unreachable=0    failed=0   
172.16.1.41                : ok=2    changed=1    unreachable=0    failed=0  

实践3
定时任务编写
[root@m01 /etc/ansible/yaml]# cat p4.yml 
- hosts: oldboy
  tasks:
    - name: Cron time sync
      cron: name='sync time' minute=*/10 job='/usr/sbin/ntpdate [图片上传失败...(image-66d0dc-1556163511329)]

ntp3.aliyun.com >/dev/null 2>&1'

练习题：每周一1-5 上午8:30 /server/scripts/

[root@nfs01 ~]# crontab -l|tail -2
#Ansible: oldboy class
30 08 * * 1-5 /bin/sh /server/scripts/

class.sh>/dev/null 2>&1


定时任务时间参数：
  minute:                # Minute when the job should run ( 0-59, *, */2, etc )
 hour:                  # Hour when the job should run ( 0-23, *, */2, etc )
day:                   # Day of the month the job should run ( 1-31, *, */2, etc )
  month:                 # Month of the year the job should run ( 1-12, *, */2, etc )
  weekday:               # Day of the week that the job should run ( 0-6 for Sunday-Saturday, *, etc )
  job:                   # The command to execute or, if env is set, the value of  environment variable. The
                           command should not contain line   breaks. Required if    state=present.

执行

[root@waiwai /etc/ansible/yaml]# ansible-playbook      /etc/ansible/yaml/p5.yml 

PLAY [oldboy]     **************************************************************************

TASK [Gathering Facts] *****************************************************************
ok: [172.16.1.41]
ok: [172.16.1.31]

TASK [Cron time sync] ******************************************************************
changed: [172.16.1.41]
changed: [172.16.1.31]

PLAY RECAP *****************************************************************************
172.16.1.31                : ok=2    changed=1    unreachable=0    failed=0   
172.16.1.41                : ok=2    changed=1    unreachable=0    failed=0   

练习题2：

ansible oldboy -m copy -a "src=/etc/rsyncd.conf dest=/etc/rsyncd.conf backup=yes"
ansible oldboy -m copy -a "content='rsync_backup:oldboy'  dest=/etc/rsync.password backup=yes mode=0600"
编写剧本：
[root@waiwai /etc/ansible/yaml]# cat p6.yml 
- hosts: oldboy
  tasks:
    - name: copy rsync.conf
      copy: src=/etc/rsyncd.conf dest=/etc/rsyncd.conf backup=yes

    - name: create rsync.password
      copy: content='rsync_backup:oldboy' dest=/etc/rsync.password backup=yes mode=0600

执行
[root@waiwai /etc/ansible/yaml]# ansible-playbook    /etc/ansible/yaml/p6.yml 

PLAY [oldboy] **************************************************************************

TASK [Gathering Facts] *****************************************************************
ok: [172.16.1.31]
ok: [172.16.1.41]

TASK [copy]   ****************************************************************************
changed: [172.16.1.31]
changed: [172.16.1.41]

TASK [copy] ****************************************************************************
changed: [172.16.1.41]
changed: [172.16.1.31]

PLAY RECAP *****************************************************************************
172.16.1.31                : ok=3    changed=2    unreachable=0    failed=0   
172.16.1.41                : ok=3    changed=2    unreachable=0    failed=0