Linux云计算学习笔记day39

for  n in {1..10} ;

do 

echo $n  ;

done

    i的初始化 ;i<=10 条件;i++

从1开始每次增加1 大于10的时候结束循环

for((i=1;i<=10;i++))

do

echo $i

done

每5分钟同步系统时间

*/5 * *  * *  ntpdate  ntp1.aliyun.com  >>/tmp/ntpdate.log 2>&1

* * *  * *  ntpdate  ntp1.aliyun.com  >>/tmp/ntpdate.log 2>&1

#sync time

*/5 * * * *  /sbin/ntpdate  ntp1.aliyun.com  >/dev/null 2>&1

定时任务中 识别PATH环境变量默认  /usr/bin和/bin

定时任务模块 cron

#sync time

*/5 * * * *  /sbin/ntpdate  ntp1.aliyun.com  >/dev/null 2>&1.

ansible all -m yum -a 'name=ntpdate state=present'

ansible all -m cron -a 'name="sync time" minute="*/5" job="/sbin/ntpdate  ntp1.aliyun.com  >/dev/null 2>&1"'

#ansible all -m cron -a 'name="zwav time" state=absent '

ansible 172.16.1.7 -m mount -a "src=172.16.1.31:/data path=/backup fstype=nfs opts=defaults state=present"

#nfs01

/nfs      172.16.1.0/24(rw,all_squash,anonuid=888,anongid=888)

[root@nfs01 ~]# showmount -e 172.16.1.31

Export list for 172.16.1.31:

/nfs    172.16.1.0/24

/upload 172.16.1.0/24

#web01 把nfs01 共享的/nfs  挂载到 /upload

/upload

[root@m01 ~]# #mount -t nfs  172.16.1.31:/nfs    /upload

[root@m01 ~]# 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"

}

[root@m01 ~]# ansible 172.16.1.7 -a 'df -h'

172.16.1.7 | CHANGED | rc=0 >>

Filesystem        Size  Used Avail Use% Mounted on

172.16.1.31:/nfs  99G  1.7G  98G  2% /upload

[root@m01 ~]# ansible 172.16.1.7 -a 'grep upload /etc/fstab'

172.16.1.7 | CHANGED | rc=0 >>

172.16.1.31:/nfs /upload nfs defaults 0 0

#playbook

[root@m01 /etc/ansible]# cat touch.yml

---

  - hosts: all

    tasks:

    - name: make av

      command: mkdir -p /tmp/a/b/c/d/e/f/g/

 

ansible-playbook -C touch.yml

ansible-playbook  touch.yml

[root@m01 /etc/ansible]# ansible all -a 'crontab -l'

172.16.1.7 | CHANGED | rc=0 >>

#backup

00 00 * * * sh /server/scripts/bak.sh  >/dev/null 2>&1

#Ansible: sync time

*/5 * * * * /sbin/ntpdate  ntp1.aliyun.com  >/dv/null 2>&1

172.16.1.41 | CHANGED | rc=0 >>

#Ansible: sync time

*/5 * * * * /sbin/ntpdate  ntp1.aliyun.com  >/dv/null 2>&1

[root@m01 /etc/ansible]# cat cron-time.yml

---

  - hosts: all

    tasks:

    - name: sync time

      cron: name="sync time" minute="*/5" job="/sbin/ntpdate  ntp1.aliyun.com  >/dv/null 2>&1" state=present

 

#ansible实现 部署nfs服务 及在web01 web02 挂载  playbook

#!/bin/bash

#one key install nfs

#package  install?

yum install -y rpcbind nfs-utils

#configure

cp /etc/exports{,.bak}

cat >/etc/exports<<EOF

#nfs01

/nfs      172.16.1.0/24(rw,all_squash)

EOF

#dir owner

mkdir -p /nfs

chown nfsnobody.nfsnobody  /nfs

#start  rpcbind nfs

systemctl start rpcbind  nfs

systemctl enable rpcbind  nfs

##部署nfs服务