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Full Discussion: Log of lost internet connections
Top Forums Shell Programming and Scripting Log of lost internet connections Post 303028686 by bakunin on Saturday 12th of January 2019 05:18:40 PM
Old 01-12-2019
Quote:
Originally Posted by drew77
I would like for it to only log pings that generate 100% packet loss. Thanks..

Code:
while true; do

date >> Internet_Connection_Log.txt
echo >> Internet_Connection_Log.txt
ping  47.182.239.232 -c 1 >> Internet_Connection_Log.txt
echo >> Internet_Connection_Log.txt
sleep 180
done

Make the logging dependent on the RC of ping:

Code:
while : ; do
     if ! ping  -c 1 47.182.239.232 ; then
          printf "\n%s\n" "ping failed at $(date)" >> Internet_Connection_Log.txt
     fi
     sleep 180
done

But wouldn't a log with start- and end-times of failures be better? Note that this makes sense only if the blocks of good and failing internet connections are longer - if it works 10 minutes, then fails for 10 minutes this would make sense, if every second ping fails but every other packet gets through this would create a very large log:

Code:
lFail=0
while : ; do
     if (( lFail )) ; then
          if ping  -c 1 47.182.239.232 ; then
               printf "\n%s\n" "ping worked again at $(date)" >> Internet_Connection_Log.txt
               lFail=0
          fi
     else
          if ! ping  -c 1 47.182.239.232 ; then
               printf "\n%s\n" "ping stopped working at $(date)" >> Internet_Connection_Log.txt
               lFail=1
          fi
     fi
     sleep 1
done

I hope this helps.

bakunin
 

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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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