Zabbix监控DHCP作用域（json格式数据）

1.新建名为的check_dhcpscop.ps1脚本，用于获取当前所有的作用域名称，内容如下：

#获取DHCP作用域，输出结果要为json格式，key值格式必须为{#NAME},必须大写
$scops = Get-DhcpServerv4Scope |select @{name="{#SCOPNAME}";expression={$_.Name}}|ConvertTo-Json
@"
{"data":$scops}
"@

zabbix server运行 zabbix_get -s 10.10.101.101 -k check_dhcpscop 命令，结果如下：

{"data":[
    {
        "{#Scopname}":  "Vlan7-v"
    },
    {
        "{#Scopname}":  "Vlan8-A"
    },
    {
        "{#Scopname}":  "Vlan9-p"
    },
    {
        "{#Scopname}":  "Vlan3-g"
    },
    {
        "{#Scopname}":  "Vlan31-T"
    },
    {
        "{#Scopname}":  "Vlan32-o"
    },
    {
        "{#Scopname}":  "Vlan4-o"
    },
    {
        "{#Scopname}":  "Vlan6-n"
    }
]}

新建名为的check_dhcpscop_value.ps1脚本，用于获取各个作用域的状态、IP使用情况，内容如下：

Param($scopname,$propname)
#$scopname = "Vlan8-AP"
#$propname = "PercentageInUse"
#获取DHCP作用域当前状态及IP分配情况
$scops = Get-DhcpServerv4Scope |select Name,@{name="ScopeID";expression={$_.ScopeID.IPAddressToString}},State
$scops_ipusages = Get-DhcpServerv4ScopeStatistics |Select @{name="ScopeID";expression={$_.ScopeID.IPAddressToString}},PercentageInUse

#将两个对象合并为一个
foreach ($scop in $scops)
    {
    $scop_ipusage = $scops_ipusages | Where-Object {$_.ScopeID -eq $scop.ScopeID}
   $scop | Add-Member -MemberType NoteProperty -Name PercentageInUse -Value $scop_ipusage.PercentageInUse -Force
    }

($scops | ? {$_.Name -eq $scopname}).$propname

zabbix server运行 zabbix_get -s 10.10.101.101 -k check_dhcpscop_value[Vlan7-v,State] 命令，返回值为 Active

2.修改zabbix agent配置文件，然后重启agent，如下：

UserParameter=check_dhcpscop,powershell c:\zabbix\script\check_dhcpscop.ps1
UserParameter=check_dhcpscop_value[*],powershell c:\zabbix\script\check_dhcpscop_value.ps1 $1 $2 #表示后面可以加两个参数

3.在DHCP模板中新建发现规则，如下：

key需要和配置文件中的UserParameter=check_dhcpscop一致