logfile

check_logfile

Checks logfiles or any other text format file for errors or other general patterns

In order to use this plugin, you need to enable 'CheckLogFile' in the '[/modules]' section of the snclient_local.ini.

Also, to avoid security issues, you need to set 'allowed pattern' in the '[/settings/check/logfile]'
section of the snclient_local.ini to a comma separated list of allowed glob patterns.

Example:
[/settings/check/logfile]
allowed pattern  = /var/log/**      # This allows all files recursively in /var/log/
allowed pattern += /opt/logs/*.log  # This allows all files with .log extension in /opt/logs/

See https://github.com/bmatcuk/doublestar#patterns for details on the pattern syntax.

• Examples
• Argument Defaults
• Attributes

Implementation

Examples

Default Check

Alert if there are errors in the snclient log file:

check_files files=/var/log/snclient/snclient.log 'warn=line like Warn' 'crit=line like Error'"
OK - 134 line(s) found

Non-OK output example check_files files=/var/log/snclient/snclient.log ‘warn=line like Warn’ ‘crit=line like Error’" CRITICAL - 23/548 line(s) found

Example using NRPE and Naemon

Naemon Config

define command{
    command_name         check_nrpe
    command_line         $USER1$/check_nrpe -H $HOSTADDRESS$ -n -c $ARG1$ -a $ARG2$
}

define service {
    host_name            testhost
    service_description  check_logfile
    use                  generic-service
    check_command        check_nrpe!check_logfile!'files=/var/log/snclient/snclient.log' 'warn=line like Warn'
}

Argument Defaults

Check Specific Arguments

Attributes

Filter Keywords

these can be used in filters and thresholds (along with the default attributes):