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Top Forums Shell Programming and Scripting Continiously monitor the log file Post 302568349 by rdcwayx on Thursday 27th of October 2011 06:05:23 AM
Old 10-27-2011
run the command
Code:
tail -f /var/log/messages >>monitor.log &

put below monitor.sh in cronjob
Code:
$ cat monitor.sh

#!/bin/bash
n1=`awk '/file not found/{n++}END{print n}' monitor.log`
[ $n1 -ge 1 ] && mailx  -s "error found" arumon@testing.com
>my.log

Code:
*/5 * * * * monitor.sh

 

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MONITOR(8)						      System Manager's Manual							MONITOR(8)

NAME
monitor - Directory Server script for monitoring database performance SYNOPSIS
monitor [ -Z serverID ] [ -D rootdn ] [ -w password ] [ -b basedn ] [-P protocol] [-h] DESCRIPTION
Retrieves performance monitoring information. To run this script, the server must be running. OPTIONS
A summary of options is included below: -Z Server Identifier The server ID of the Directory Server instance. If there is only one instance on the system, this option can be skipped. -D Root DN The Directory Manager DN, or root DN. If not specified, the script will search the server instance configuration for the value. -w password The rootdn password. -b basedn The DN of a backend from cn=config. -P Protocol The connection protocol to connect to the Directory Server. Protocols are STARTTLS, LDAPS, LDAPI, and LDAP. If this option is skipped, the most secure protocol that is available is used. For LDAPI, AUTOBIND is also available for the root user. -h Display the usage. EXAMPLE
monitor -P STARTTLS Note: security must be enabled to use protocol STARTTLS. If STARTTLS is not available it will default to next strongest/available protocol automatically. monitor -Z instance2 -D 'cn=directory manager' -w password -b 'cn=monitor,cn=userRoot,cn=ldbm database,cn=plugins,cn=config' Note: You only need to bind as the root DN if you want to look at a backend monitor. DIAGNOSTICS
Exit status is zero if no errors occur. Errors result in a non-zero exit status and a diagnostic message being written to standard error. AUTHOR
monitor was written by the 389 Project. REPORTING BUGS
Report bugs to http://bugzilla.redhat.com. COPYRIGHT
Copyright (C) 2013 Red Hat, Inc. Mar 5, 2013 MONITOR(8)
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