linux – 当负载很高时,Nagios插件可以获取进程快照

首先,为您的Load平均定义添加一个事件处理程序：

define service{
    use                     generic-service
    host_name               xx
    service_description     Load_Average
    @R_675_10943@k_command           @R_675_10943@k_nrpe!@R_675_10943@k_load
    event_handler           processes_snapshot!xx
    contact_groups          admin-sms
}

processes_snapshot命令在commands.cfg中定义：

define command{
    command_name    processes_snapshot
    command_line    $USER1$/eventhandlers/processes_snapshot.sh $serviCESTATE$$serviCESTATETYPE$$serviCEATTEMPT$$HOSTADDRESS$
}

第二,编写事件处理程序脚本(processes_snapshot.sh)：

#!/bin/bash

case "$1" in
    OK)
        ;;
    WARNING)
        /usr/local/nagios/libexec/@R_675_10943@k_nrpe -H $4 -c processes_snapshot
        ;;
    UNKNowN)
        ;;
    CRITICAL)
        /usr/local/nagios/libexec/@R_675_10943@k_nrpe -H $4 -c processes_snapshot
        ;;
esac

exit 0

命令processes_snapshot在xx主机上的nrpe.cfg中定义,如下所示：

command[processes_snapshot]=top -cSbn 1 | tail -n +8 | sort -rn -k11 | head > /tmp/proc_snap.txt

PS：我还没有测试过这个配置.