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Full Discussion: Nohup not working as expected
Top Forums UNIX for Dummies Questions & Answers Nohup not working as expected Post 302839035 by sebcou on Wednesday 31st of July 2013 07:35:25 AM
Old 07-31-2013
Nohup not working as expected
Hi. I am trying to start a script on my router that will execute even if i log off. To execute the script I write:

nohup ./dslconnection > dslstat.out 2>&1 &

It starts the job:
21968 admin 1604 S /bin/ash ./dslconnection

The problem is that when I log back in the job has been terminated.

To debug I tried the same thing with ping.
nohup ping 192.168.1.91 > dslstat.out 2>&1 &

This worked and ping was still executed when I logged back in.

The script I want to run is below. Any ideas of what could be the problem??

Code:
#!/bin/ash
statusname=0
while true
 do
        laststatus=$statusname
        ping -c 1 -W 1 www.google.se > /dev/null
        statusname=$?
        if [ "$statusname" -ne "$laststatus" ]; then
           date
           if [ "$statusname" -eq 0 ]; then
                  echo Google is reachable
           else
                  echo Google unreachable
           fi
        fi
    sleep 10
done

 

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LEARN ABOUT DEBIAN

ocf_pacemaker_ping

OCF_PACEMAKER_PING(7)					      Pacemaker Configuration					     OCF_PACEMAKER_PING(7)

NAME

       ocf_pacemaker_ping - node connectivity

SYNOPSIS

       [OCF_RESKEY_pidfile=string] [OCF_RESKEY_dampen=integer] [OCF_RESKEY_name=string] [OCF_RESKEY_multiplier=integer]
       [OCF_RESKEY_host_list=string] [OCF_RESKEY_attempts=integer] [OCF_RESKEY_timeout=integer] [OCF_RESKEY_options=string]
       [OCF_RESKEY_debug=string]

       ping [start | stop | reload | monitor | meta-data | validate-all]

DESCRIPTION

       Every time the monitor action is run, this resource agent records (in the CIB) the current number of ping nodes the host can connect to. It
       is essentially the same as pingd except that it uses the system ping tool to obtain the results.

SUPPORTED PARAMETERS

       OCF_RESKEY_pidfile = string [/ping-]
	   PID file

       OCF_RESKEY_dampen = integer [5s]
	   Dampening interval

	   The time to wait (dampening) further changes occur

       OCF_RESKEY_name = string [pingd]
	   Attribute name

	   The name of the attributes to set. This is the name to be used in the constraints.

       OCF_RESKEY_multiplier = integer []
	   Value multiplier

	   The number by which to multiply the number of connected ping nodes by

       OCF_RESKEY_host_list = string []
	   Host list

	   The list of ping nodes to count.

       OCF_RESKEY_attempts = integer [2]
	   no. of ping attempts

	   Number of ping attempts, per host, before declaring it dead

       OCF_RESKEY_timeout = integer [2]
	   ping timeout in seconds

	   How long, in seconds, to wait before declaring a ping lost

       OCF_RESKEY_options = string []
	   Extra Options

	   A catch all for any other options that need to be passed to ping.

       OCF_RESKEY_debug = string [false]
	   Verbose logging

	   Enables to use default attrd_updater verbose logging on every call.

AUTHOR

       Andrew Beekhof <andrew@beekhof.net>
	   Author.

Pacemaker Configuration 					    04/17/2012						     OCF_PACEMAKER_PING(7)
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