IpmiConfig: ipmi_

#!/bin/bash
# -*- sh -*-

: << =cut

=head1 NAME

ipmi_ - Plugin to monitor temperature or fan speed using IPMI

=head1 CONFIGURATION
Define IPMI lan user & password on /etc/munin/plugin-conf.d/munin as bash variable :
IPMI_USER=xxxx
IPMI_PASS=yyy
=head2 ENVIRONMENT VARIABLES

This plugin does not use environment variables

=head2 WILDCARD PLUGIN

This plugin should be linked as ipmi_temp or ipmi_fans, and will show
either temperatures or fan speeds based on its link name.

=head1 NOTE

WARNING: Munin has a 10 second default timeout on plugins.  On some
hosts ipmitool takes longer than that to probe all your hardware.  In
this case this plugin us unusable.

=head1 AUTHOR

Nicolai Langfeldt <janl@linpro.no>

=head1 LICENSE

Based on ipmi_ munin plugin
Donated to the public domain by Nicolai Langfeldt (janl@linpro.no)
Adapted by Maxence Dunnewind <maxence@dunnewind.net>

=head1 MAGIC MARKERS

 #%# family=auto
 #%# capabilities=autoconf suggest

=cut

#### Parse commandline to determine what the job is
CONFIG_FILE=/etc/munin/plugin-conf.d/ipmi
IPMI_USER=
IPMI_PASS=

if [ -f /etc/munin/plugin-conf.d/ipmi ];then
    IPMI_USER=$(grep ipmi_user /etc/munin/plugin-conf.d/ipmi|awk '{ print $2 }')
    IPMI_PASS=$(grep ipmi_pass /etc/munin/plugin-conf.d/ipmi|awk '{ print $2 }')
fi

CONFIG=no
case $1 in
    autoconf)
        ! test -x /usr/bin/ipmitool && 
          echo 'no (no /usr/bin/ipmitool)' && exit 0
        echo yes
        exit 0
        ;;
    suggest) echo fans
             echo temp
             exit 0;;
    config)  CONFIG=config;;
esac

case $0 in
    *_temp*) MEASURE=temp;;
    *_fans*) MEASURE=fans;;
    *) echo Please invoke as ipmi_temp or ipmi_fans >&2
       exit 1;;
esac

HOST_ADR=$(echo $0|sed 's/^.*\(temp\|fans\)_//;s/_/\./g')
HOST_ADR_=$(echo $0|sed 's/^.*\(temp\|fans\)_//')
export CONFIG MEASURE

#### Work is done in this awk script
if [ "config" = "$CONFIG" ];then
echo "host_name $HOST_ADR"
fi
ipmitool -l $IPMI_USER -H $HOST_ADR -I lan  -P "$IPMI_PASS" sensor | gawk -F'|' '
BEGIN {
    FANS = "";
    TEMPS = "";
    CFANS = "graph_title '$HOST_ADR' fan speeds \ngraph_vlabel RPM\ngraph_category Sensors\n";
    CTEMPS = "graph_title '$HOST_ADR' temperature\ngraph_vlabel Degrees celcius\ngraph_category Sensors\n";
}

# Remove extraneous spaces to make output prettyer
{ gsub(/\t/," "); gsub(/ +/," "); gsub(/ +\|/,"|"); gsub(/\| +/,"|") }

# Skip lines with 0x0 in first column
/^[^|]+\|0x0\|/ { next; };

# Skip lines with na in first column
/^[^|]+\|na\|/ { next; };

# Parse temperatures
/degrees C/ {
        NAME=THING=$1;
        gsub(/[^A-Za-z0-9]/,"",NAME);
        TEMP=$2;

        # Find unique name
        while (NAMES[NAME] >= 1) {
            NAME=sprintf("%si",NAME);
        }
        NAMES[NAME]=1;

        WARN=$8;
        CRIT=$9;

        TEMPS = sprintf("%s%s.value %s\n",TEMPS,NAME,TEMP);
        CTEMPS = sprintf("%s%s.label %s\n",CTEMPS,NAME,THING);

        if (CRIT !~ /na/) {
                CTEMPS = sprintf("%s%s.critical 0:%s\n",CTEMPS,NAME,CRIT);
        }

        if (WARN !~ /na/) {
                CTEMPS = sprintf("%s%s.warning 0:%s\n",CTEMPS,NAME,WARN);
        }
}

/RPM/ { 
        NAME=THING=$1;
        gsub(/[^A-Za-z0-9]/,"",NAME);
        SPEED=$2;

        # Find unique name
        while (NAMES[NAME] >= 1) {
            NAME=sprintf("%si",NAME);
        }
        NAMES[NAME]=1;

        FANS = sprintf("%s%s.value %s\n",FANS,NAME,SPEED);
        CFANS = sprintf("%s%s.label %s\n",CFANS,NAME,THING);

        OK=$4;

        MIN=$6;
        if (MIN !~ /na/) {
                CFANS = sprintf("%s%s.warning %s:\n",CFANS,NAME,MIN);
        }
}

END {
    if (ENVIRON["MEASURE"] == "temp") {
        VALUE=TEMPS;
        CONFIG=CTEMPS;
    } else {
        VALUE=FANS;
        CONFIG=CFANS;
    }
    if (ENVIRON["CONFIG"] == "config")
        printf "%s",CONFIG;
    else
        printf "%s",VALUE;
}
'