nagios監控heartbeat

標籤：heartbeat監控   heartbeat nagios   

heartbeat架好後，我們就需要監控起來嘍，下面我們就來瞭解下怎麼監控。

首先來瞭解下幾個命令，這幾個命令在heartbeat安裝後會自動加上，我們的監控指令碼就用到這幾個命令。

[[email protected] libexec]# which cl_status/usr/bin/cl_status[[email protected] libexec]# cl_status listnodes   #列出當前heartbeat叢集中的節點192.168.3.1usvr-211usvr-210[[email protected] libexec]# cl_status nodestatus usvr-211  #列出節點的狀態active[[email protected] libexec]# cl_status nodestatus 192.168.3.1  #列出節點的狀態ping

我們的check_heartbeat.sh原理就是列出叢集中所有節點，並監測所有節點的狀態是否正常，我們實驗的節點狀態為ping和active。

當active+ping的個數為0時critical

當active+ping的個數小於節點總個數時為wart

當active+ping的個數等於節點總個數時為ok

[[email protected] libexec]# cat check_heartbeat.sh #!/bin/bash# Author: Emmanuel Bretelle# Date: 12/03/2010# Description: Retrieve Linux HA cluster status using cl_status# Based on http://www.randombugs.com/linux/howto-monitor-linux-heartbeat-snmp.html ## Autor: Stanila Constantin Adrian# Date: 20/03/2009# Description: Check the number of active heartbeats# http://www.randombugs.com# Get program pathREVISION=1.3PROGNAME=`/bin/basename $0`PROGPATH=`echo $0 | /bin/sed -e 's,[\\/][^\\/][^\\/]*$,,'`NODE_NAME=`uname -n`CL_ST='/usr/bin/cl_status'#nagios error codes#. $PROGPATH/utils.sh OK=0WARNING=1CRITICAL=2UNKNOWN=3usage () {    echo "Nagios plugin to heartbeat.Usage:  $PROGNAME   $PROGNAME [--help | -h]  $PROGNAME [--version | -v]Options:  --help -lPrint this help information  --version -v  Print version of plugin"}help () {    print_revision $PROGNAME $REVISION    echo; usage; echo; support}while test -n "$1"do  case "$1" in    --help | -h)      help      exit $STATE_OK;;    --version | -v)      print_revision $PROGNAME $REVISION      exit $STATE_OK;;#    -H)#      shift#      HOST=$1;;#    -C)#      shift#      COMMUNITY=$1;;    *)      echo "Heartbeat UNKNOWN: Wrong command usage"; exit $UNKNOWN;;  esac  shiftdone$CL_ST hbstatus > /dev/nullres=$?if [ $res -ne 0 ]then  echo "Heartbeat CRITICAL: Heartbeat is not running on this node"  exit $CRITICALfideclare -i I=0declare -i A=0NODES=`$CL_ST listnodes`for node in $NODESdo  status=`$CL_ST nodestatus $node`  let I=$I+1#  if [ $status == "active" ] 預設情況下檢測active狀態的個數，但是ping狀態也為正常狀態，因此改成如下條件。  if [ $status == "active" -o $status == "ping" ]  then    let A=$A+1  fidoneif [ $A -eq 0 ]then  echo "Heartbeat CRITICAL: $A/$I"  exit $CRITICALelif [ $A -ne $I ]then  echo "Heartbeat WARNING: $A/$I"  exit $WARNINGelse  echo "Heartbeat OK: $A/$I"  exit $OKfi

我們在nagios用戶端，也就是我們的lvs叢集usvr-210，usvr-211，我們通過nagios伺服器端的check_nrpe來擷取監控資訊。

naigos用戶端

1.先將指令碼複製到nagios命令目錄下並修改相應許可權 

cp check_heartbeat.sh /usr/local/nagios/libexec/

chmod a+x check_heartbeat.sh

chown nagios.nagios check_heartbeat.sh

2.在naigos用戶端的設定檔中加入監控命令。

vim /usr/local/nagios/etc/nrpe.cfg 

command[check_heartbeat]=/usr/local/nagios/libexec/check_heartbeat.sh

3.重新載入設定檔。

service xinetd reload

nagios服務端

1.加入相關監控服務

define service {     use                     local-service    service_description     heartbeat-lvs-master    check_command           check_nrpe!check_heartbeat    service_groups          heartbeat_services     host_name               usvr-210    check_interval          5       notifications_enabled   1       notification_interval   30      contact_groups          admins}define service {     use                     local-service    service_description     heartbeat-lvs-slave    check_command           check_nrpe!check_heartbeat    service_groups          heartbeat_services     host_name               usvr-211    check_interval          5       notifications_enabled   1       notification_interval   30      contact_groups          admins}

2.檢查並載入設定檔

nagioscheck

service nagios reload

監控如下：

ok，我們的heartbeat監控完成了。

我是參考這個網站http://wiki.debuntu.org/wiki/Linux_HA_Heartbeat/Monitoring_with_Nagios，希望能對大家有所協助。

nagios監控heartbeat