day42-ansible模块补充及playbook初涉

ansible模块补充

serivce

重启crond服务

 ansible all -m service -a 'name=crond enabled=yes state=restarted'

更多参数

serivce
    开启 关闭重启
    name
    state
        started #启动服务
        stopped #停止服务
        restarted #重启服务
        reloaded #重载服务
    enabled
        yes
        no

cron模块

1.书写定时任务到所有主机
每5分钟同步系统时间

[[e-mail] ~]# ansible all -m cron -a 'name="sync time" minute="*/5" job="/sbin/ntpdate ntp1.aliyun.com >/dev/null 2>&1" state=present'

2.检查

[[e-mail] ~]# ansible all -a 'crontab -l'
172.16.1.7 | CHANGED | rc=0 >>
#Ansible: sync time
*/5 * * * * /sbin/ntpdate ntp1.aliyun.com >/dev/null 2>&1

172.16.1.31 | CHANGED | rc=0 >>
#Ansible: sync time
*/5 * * * * /sbin/ntpdate ntp1.aliyun.com >/dev/null 2>&1

172.16.1.41 | CHANGED | rc=0 >>
#Ansible: sync time
*/5 * * * * /sbin/ntpdate ntp1.aliyun.com >/dev/null 2>&1

mount模块

[图片上传中...(QQ截图20190529113808.png-c2e7df-1559118392786-0)]

挂载NFS共享目录到web服务器
首先确保NFS端的nfs配置正常

[[e-mail] ~]# cat /etc/exports
#
/nfs  172.16.1.0/24(rw)
[[e-mail] ~]# showmount -e 172.16.1.31
Export list for 172.16.1.31:
/nfs   172.16.1.0/24

如果没有配置好，请参考nfs环境部署点击链接

把nfs01 共享的/nfs 挂载到 web01的/upload

[[e-mail] ~]# ansible 172.16.1.7 -m mount -a 'fstype=nfs src=172.16.1.31:/nfs path=/upload state=mounted'
172.16.1.7 | CHANGED => {
    "ansible_facts": {
        "discovered_interpreter_python": "/usr/bin/python"
    }, 
    "changed": true, 
    "dump": "0", 
    "fstab": "/etc/fstab", 
    "fstype": "nfs", 
    "name": "/upload", 
    "opts": "defaults", 
    "passno": "0", 
    "src": "172.16.1.31:/nfs"
}

检查

[[e-mail] ~]# ansible 172.16.1.7 -a 'df -h'
172.16.1.7 | CHANGED | rc=0 >>
Filesystem          Size  Used Avail Use% Mounted on
/dev/sda3            18G  1.7G   17G  10% /
devtmpfs            476M     0  476M   0% /dev
tmpfs               487M     0  487M   0% /dev/shm
tmpfs               487M   14M  473M   3% /run
tmpfs               487M     0  487M   0% /sys/fs/cgroup
/dev/sda1          1014M  138M  877M  14% /boot
tmpfs                98M     0   98M   0% /run/user/0
172.16.1.31:/nfs     18G  1.8G   17G  10% /upload

卸载

[[e-mail] ~]# ansible 172.16.1.7 -m mount -a 'fstype=nfs src=172.16.1.31:/nfs path=/upload state=absent'

playbook

基本格式

F}I%g

QQ截图20190529113808.png

编写剧本创建目录

[[e-mail] /etc/ansible]# vim touch.ym1 
---
  - hosts: all
    tasks:
    - name: make av
      command: mkdir -p /tmp/1/2/3

检查语法是否正确

[[e-mail] /etc/ansible]# ansible-playbook -C cron-sync.yml 

PLAY [all] ***************************************************************************************************************************

TASK [Gathering Facts] ***************************************************************************************************************
ok: [172.16.1.31]
ok: [172.16.1.41]
ok: [172.16.1.7]

TASK [cron-sync] *********************************************************************************************************************
changed: [172.16.1.41]
changed: [172.16.1.31]
changed: [172.16.1.7]

PLAY RECAP ***************************************************************************************************************************
172.16.1.31                : ok=2    changed=1    unreachable=0    failed=0    skipped=0    rescued=0    ignored=0   
172.16.1.41                : ok=2    changed=1    unreachable=0    failed=0    skipped=0    rescued=0    ignored=0   
172.16.1.7                 : ok=2    changed=1    unreachable=0    failed=0    skipped=0    rescued=0    ignored=0