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Full Discussion: Dumb question on the ping command
Top Forums UNIX for Dummies Questions & Answers Dumb question on the ping command Post 302907367 by Corona688 on Friday 27th of June 2014 11:35:13 AM
Old 06-27-2014
I've never had ping die on me like that, no. (Though you have not said what your system is -- it's possible you have a different implementation of ping than I do.) I think it's more likely it died (or perhaps froze) because you closed whatever terminal it was attached to... Putting it in background does not stop that, you need to redirect stdin/stdout/stderr.

YYYY-MM-DD HH:MM:SS dates are best for log files because they compare alphabetically. You can look for lines alphabetically greater than "2014-06-27 01:00:00" and that will do exactly what you'd think it should do.

You can avoid running date 10,000 times for 10,000 lines by feeding it into awk once and only once. Use nawk on solaris.

You should add 'disown' after & if your shell is bash or ksh. Most other shells don't need it.

Code:
 ( nohup ping -i 10 <SERVERNAME> | awk '{ print strftime("%Y-%m-%d %H:%M:%S", systime()), $0 }' >> pinglog_.log & disown ) >/dev/null 2>/dev/null </dev/null

 

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LEARN ABOUT SUSE

ocf_pacemaker_pingd

OCF_PACEMAKER_PINGD(7)					      Pacemaker Configuration					    OCF_PACEMAKER_PINGD(7)

NAME

       ocf_pacemaker_pingd - pingd resource agent

SYNOPSIS

       [OCF_RESKEY_pidfile=string] [OCF_RESKEY_user=string] [OCF_RESKEY_dampen=integer] [OCF_RESKEY_set=string] [OCF_RESKEY_name=string]
       [OCF_RESKEY_section=string] [OCF_RESKEY_multiplier=integer] [OCF_RESKEY_host_list=string] [OCF_RESKEY_interval=integer]
       [OCF_RESKEY_attempts=integer] [OCF_RESKEY_timeout=integer] [OCF_RESKEY_options=string]

       pingd [start | stop | monitor | meta-data | validate-all]

DESCRIPTION

       This agent (ocf:pacemaker:pingd) has been replaced by the more reliable ocf:pacemaker:ping. It records (in the CIB) the current number of
       ping nodes (specified in the 'host_list' parameter) a cluster node can connect to.

SUPPORTED PARAMETERS

       OCF_RESKEY_pidfile = string [/var/run//pingd-default]
	   PID file

       OCF_RESKEY_user = string [root]
	   The user we want to run pingd as

	   The user we want to run pingd as

       OCF_RESKEY_dampen = integer [5s]
	   Dampening interval

	   The time to wait (dampening) further changes occur

       OCF_RESKEY_set = string []
	   Set name

	   The name of the instance_attributes set to place the value in. Rarely needs to be specified.

       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_section = string []
	   Section name

	   The section place the value in. Rarely needs to be specified.

       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. Defaults to all configured ping nodes. Rarely needs to be specified.

       OCF_RESKEY_interval = integer [1]
	   ping interval in seconds

	   How often, in seconds, to check for node liveliness

       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 pingd.

AUTHOR

       Andrew Beekhof <andrew@beekhof.net>
	   Author.

Pacemaker Configuration 					    07/05/2010						    OCF_PACEMAKER_PINGD(7)
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