puppet系列之之snmpd模塊

 架構如下：

 

 

==============================

manifests

=============================

 

1,at /etc/puppet/modules

-----------------------

init.pp

+++++++++++++

class cacti (
  $monitor_ip = "xxx.xxx.xxx.xxx",
  $snmp_passwd = "xxxx"
){
        case $operatingsystem {
                centos:{
                        include cacti::base
                        include cacti::diskio
                        include cacti::service
                }
        }
}

 

----------------------

base.pp

++++++++++

class cacti::base {
    package {"net-snmp":
            ensure => present
    }
    package {"net-snmp-utils":
            ensure  =>  present,
            require =>  package["net-snmp"]
    }
}

-----------------------------------

diskio.pp

++++++++++++

class cacti::diskio {
         file {"snmpdiskio":
            mode    => 755,
            owner   => root,
            group   => root,
            path    => "/usr/local/bin/snmpdiskio",
            source  => "puppet:///cacti/snmpdiskio",
            require => Class["cacti::base"],
            notify  => Class["cacti::service"]
         }
         file { "webconn.sh":
            mode    => 755,
            owner   => root,
            group   => root,
            path    => "/etc/snmp/webconn.sh",
            content => template('cacti/webconn.erb'),
            require => Class["cacti::base"],
            notify  => Class["cacti::service"]
         }
}

----------------------------

service.pp

++++++++++++++

class cacti::service {
      file {"snmpd.conf":
        mode    => 644,
        owner   => root,
        group   => root,
        path    => "/etc/snmp/snmpd.conf",
        content => template('cacti/snmpd-conf.erb'),
        require => Class["cacti::base","cacti::diskio"],
        notify  => Service['snmpd']
      }

      service { "snmpd":
        ensure  => running,
        enable  => true,
        subscribe => File['snmpd.conf']
      }
   }

 

=========================

file

=========================

snmpdiskio內容如下:

 

# $Id: snmpdiskio,v 1.5 2008/01/31 21:19:50 dverlaeckt Exp $
# snmpdiskio v0.9.6 (c) 2008 Dieter Verlaeckt <[e-mail]>
# snmpdiskio v0.9.5 (c) 2007 Pablo Destefanis <[e-mail]>
# snmpdiskio v0.9.4 (c) 2006 Mikael Fridh <[e-mail]>

# Fields in /proc/partitions (kernel 2.4)
# major minor #blocks name rio rmerge rsect ruse wio wmerge wsect wuse running use aveq

# Fields in /proc/diskstats (kernel 2.6) for disks (i.e. hda)
# major minor name rio rmerge rsect ruse wio wmerge wsect wuse running use aveq

# Fields in /proc/diskstats (kernel 2.6) for partitions (i.e. hda1)
# major minor name rio rsect wio wsect

# InBlocks = sectors written to disk
# OutBlocks = sectors read from disk

# Set default procfile for kernel 2.4
PROCFILE="/proc/partitions"
MODE="linux24"

# Probably kernel 2.6:
if [ -f /proc/diskstats ]; then
    PROCFILE=/proc/diskstats
    MODE="linux26"
fi


function hdNum()
{
        awk ' BEGIN { num=0 } $1 ~ /[0-9]+/ && $2 ~ /[0-9]+/ { num++ } END { print num } ' $PROCFILE
}

function hdIndex()
{
        awk ' BEGIN { num=0 } $1 ~ /[0-9]+/ && $2 ~ /[0-9]+/ { num++; print num } ' $PROCFILE
}

function hdDescr()
{
        if [ "$MODE" = "linux26" ]; then
                awk ' $1 ~ /[0-9]+/ && $2 ~ /[0-9]+/ { printf "%s\n", $3 }' $PROCFILE
        else
                awk ' $1 ~ /[0-9]+/ && $2 ~ /[0-9]+/ { printf "%s\n", $4 }' $PROCFILE
        fi
}

function hdInBlocks()
{
        if [ "$MODE" = "linux26" ]; then
                awk ' $1 ~ /[0-9]+/ && $2 ~ /[0-9]+/ && NF == 7 { printf "%.0f\n", $7 * 512 }
                      $1 ~ /[0-9]+/ && $2 ~ /[0-9]+/ && NF == 14 { printf "%.0f\n", $10 * 512 } ' $PROCFILE
        else
                awk ' $1 ~ /[0-9]+/ && $2 ~ /[0-9]+/ && NF == 15 { printf "%.0f\n", $11 * 512 } ' $PROCFILE
        fi
}

function hdOutBlocks()
{
        if [ "$MODE" = "linux26" ]; then
                awk ' $1 ~ /[0-9]+/ && $2 ~ /[0-9]+/ && NF == 7 { printf "%.0f\n", $5 * 512 }
                      $1 ~ /[0-9]+/ && $2 ~ /[0-9]+/ && NF == 14 { printf "%.0f\n", $6 * 512 } ' $PROCFILE
        else
                awk ' $1 ~ /[0-9]+/ && $2 ~ /[0-9]+/ && NF == 15 { printf "%.0f\n", $7 * 512 } ' $PROCFILE
        fi
}

function usage()
{
        cat <<-EOUSAGE
Usage: $0 <hdNum|hdIndex|hdDescr|hdInBlocks|hdOutBlocks>
EOUSAGE
}

if [ 1 -ne $# ]; then
        usage
        exit 1
fi

case $1 in
        hdNum|hdIndex|hdDescr|hdInBlocks|hdOutBlocks)
                $1
        ;;
        'hdNum')
                hdNum
        ;;
        'hdIndex')
                hdIndex
        ;;
        'hdDescr')
                hdDescr
        ;;
        'hdInBlocks')
                hdInBlocks
        ;;
        'hdOutBlocks')
                hdOutBlocks
        ;;
        *)
                usage
                exit 1
        ;;
esac

exit 0

 

 

============================

templates

============================

1,at /etc/puppet/modules/cacti/templates

------------------------------

snmpd-conf.erb

++++++++++++

com2sec localhost  <%= ipaddress_lo %>       public
com2sec monitorhost  <%= monitor_ip %>       <%= snmp_passwd %>
group   myhost         v2c           localhost
group   mygroup        v2c           monitorhost
view    systemview    included   .1.3.6.1.2.1.1
view    systemview    included   .1.3.6.1.2.1.25.1.1
access  myhost         ""      any       noauth    exact  all    none none
access  mygroup        ""      any       noauth    exact  all    none none
view all    included  .1                               80
pass .1.3.6.1.4.1.4413.4.1 /usr/bin/ucd5820stat
extend .1.3.6.1.4.1.2021.21 webconn /bin/bash /etc/snmp/webconn.sh
exec .1.3.6.1.4.1.2021.54 hdNum /bin/sh /usr/local/bin/snmpdiskio hdNum
exec .1.3.6.1.4.1.2021.55 hdIndex /bin/sh /usr/local/bin/snmpdiskio hdIndex
exec .1.3.6.1.4.1.2021.56 hdDescr /bin/sh /usr/local/bin/snmpdiskio hdDescr
exec .1.3.6.1.4.1.2021.57 hdInBlocks /bin/sh /usr/local/bin/snmpdiskio hdInBlocks
exec .1.3.6.1.4.1.2021.58 hdOutBlocks /bin/sh /usr/local/bin/snmpdiskio hdOutBlocks

 

------------------------------------

webconn.erb

++++++++++++++++++++

#!/bin/sh
#If more than one IP or port Please '|' separated
ip="<%= ipaddress_eth0 %>"
port="80|443"
webconn=`netstat -nt |grep ESTABLISHED |awk '{print $4}'|awk '/('$ip'):('$port')/'| wc -l`
websyn=`netstat -nt |grep SYN_RECV |awk '{print $4}'|awk '/('$ip'):('$port')/'| wc -l`
weback=`netstat -nt |grep LAST_ACK |awk '{print $4}'|awk '/('$ip'):('$port')/'| wc -l`
webwait=`netstat -nt |grep TIME_WAI |awk '{print $4}'|awk '/('$ip'):('$port')/'| wc -l`
echo $webconn
echo $websyn
echo $weback
echo $webwait

 

----------------------------------------------------------------------

webconn.sh的作用是用來監控tcp連接數

另外在webconn.erb中如果客戶端有雙網卡則ip="<%= ipaddress_eth0 %>|<%= ipaddress_eth1 %>" 以此類推

snmpdiskio的作用是用來監控磁盤io

 

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