cron job to detect dongle status

mcdull

用左 3G dongle 幾個月..
發現, 佢隔一排, 可能兩三日就detect唔到枝usb..
重點係..... 我根本唔知.

而家想寫個cron job check下枝dongle仲係咪online, 唔係的話就email我同reboot.

但係 asterisk -rx "dongle show devices" | grep Free | grep dongle0
係我用root既console可以正常return value..
但係放左入cron job 就完全冇return..

點解呢....

角色

是否cron的command和root的rw权限不一样？

mcdull

是否cron的command和root的rw权限不一样？
角色 發表於 2017-10-13 09:38

    cron job 已經係用root行.

sudo crontab -e
我成個console都係root. 用緊 Freepbx

不過我個cron issue reboot command 佢都冇理我. 我都唔知點解

ttmuskie

Only reboot not work? How about the email?

mcdull

Only reboot not work? How about the email?
ttmuskie 發表於 2017-10-15 21:02

Email works. But asterisk -rx returns nothing, so it keeps warning me that my dongle disconnects.

ttmuskie

Try to specify the full path for the asterisk (i.e. /usr/sbin/asterisk) to see if it make any difference.

mcdull

Try to specify the full path for the asterisk (i.e. /usr/sbin/asterisk) to see if it make any differ ...
ttmuskie 發表於 2017-10-16 12:30

    did it already.  it doesn't return any error message. Just empty string.

ttmuskie

I put this under my "sudo crontab -e":

1. */5  *      *        *   *  /usr/sbin/asterisk -rx "dongle show devices" | grep Free | grep dongle0 | tee /tmp/tbd.txt

複製代碼

And the result:

1. cat /tmp/tbd.txt
   
2. dongle0      0     Free       8    0    0       PCCW-HKT       E180       11.126.13.00.380  354241028919407  454196220366839  Unknown

複製代碼

mcdull

隔左幾日, 無端端又會得左.....

mcdull

1. #!/bin/sh
   
2. 
   
3. #check if chan_dongle is actually loaded or quit
   
4. checkchan=`/usr/sbin/asterisk -rx "dongle show devices" | grep dongle`
   
5. if [[ $checkchan ]]; then
   
6.    echo "`date`"
   
7.    echo "chan_dongle is up and running"
   
8.    echo "$checkchan"
   
9. else
   
10.    echo "`date`"
    
11.    echo "chan_dongle has not been loaded, wait for next cronjob"
    
12.    exit 0
    
13. fi
    
14. 
    
15. line=`/usr/sbin/asterisk -rx "dongle show devices" | grep +852XXXXXXXX | grep Free`
    
16. deb=`/usr/sbin/asterisk -rx "dongle show devices"`
    
17. if [[ $line ]]; then
    
18.    echo "Hello Card is working fine"
    
19.    echo "$line"
    
20. else
    
21.    echo "GSM down. Rechecking in 2 minute"
    
22.    sleep 2m
    
23.    line=`/usr/sbin/asterisk -rx 'dongle show devices' | grep +852XXXXXXXX | grep Free`
    
24.    if [[ $line ]]; then
    
25.       echo "Hello Card is working fine Now"
    
26.       echo "$line"
    
27.       exit 0
    
28.    else
    
29.       echo "GSM down. Rebooting in 1 minute"
    
30.       echo $deb | mailx -s 'GSM unresponsive. System Reboot in progress' -r 'xxx@xxx.com' -S smtp='xxx.xxx.xxx.xxx' xxx@xxx.com
    
31.       /usr/sbin/shutdown -r 1
    
32.    fi
    
33. fi
    
34. exit 0

複製代碼