Win7安装和配置SNMP - java使用SNMP4j获取监控信息

一、配置和启动SNMP服务

通过SNMP监控Windows主机需要在被监控的服务器上安装简单网络管理协议（SNMP）的Windows组件，以Windows 7系统为例：

首先，在控制面板中找到“卸载程序”；

在弹出的窗口中单击“打开或关闭Windows功能”；

勾选弹出窗口中的“简单网络管理协议（SNMP）”项后单击“确定”并根据提示完成安装即可。

完成SNMP服务的安装并重启计算机后，右键单击“计算机”选择“管理”

在弹出的“计算机管理”窗口中左侧导航栏中找到“服务”，并在右侧找到“SNMP Service”项；

鼠标双击“SNMP Service”选项，在弹出的窗口中切换到“安全”选项卡中，如上图添加“接受的社区名称”和接收哪些主机发出的SNMP数据包，在本例中，为了方便测试，可以添加localhost。

“接受的社区名称”是自己定义的任意字符都可以，接收那些主机发出的SNMP数据包定义成你的Nagios服务器即可。

到这里被监控端的Windows主机的SNMP服务就配置完成了。

二、使用简单的SNMP4j来进行SNMP数据的抓取

package com.ebay.tools;

import org.snmp4j.CommunityTarget;
import org.snmp4j.PDU;
import org.snmp4j.Snmp;
import org.snmp4j.TransportMapping;
import org.snmp4j.event.ResponseEvent;
import org.snmp4j.mp.SnmpConstants;
import org.snmp4j.smi.Address;
import org.snmp4j.smi.OID;
import org.snmp4j.smi.OctetString;
import org.snmp4j.smi.UdpAddress;
import org.snmp4j.smi.VariableBinding;
import org.snmp4j.transport.DefaultUdpTransportMapping;

public class SNMPTestExample {

public static void main(String[] args) throws Exception {
System.out.println(" --------------- SNMPExample start ---------------");

TransportMapping<UdpAddress> transportMapping = new DefaultUdpTransportMapping();
Snmp snmp = new Snmp(transportMapping);
transportMapping.listen();

ResponseEvent response = null;

PDU pdu = new PDU();
  pdu.add(new VariableBinding(new OID("1.3.6.1.2.1.1.2.0")));
  pdu.setType(PDU.GET);

  String address = "localhost" + "/" + 161;

  Address targetAddress = new UdpAddress(address);
CommunityTarget target = new CommunityTarget();

target.setCommunity(new OctetString("public")); // 改字符串是我们在上面配置的
target.setAddress(targetAddress);
target.setRetries(2);
target.setTimeout(3000);
target.setVersion(SnmpConstants.version2c);

  response = snmp.get(pdu, target);

  System.out.println("result: " + response.getResponse());

  System.out.println(" --------------- SNMPExample ended ---------------");
}
}

如果你的SNMP的版本是version3,必须加入安全机制相关的代码：

import org.snmp4j.PDU;
import org.snmp4j.ScopedPDU;
import org.snmp4j.Snmp;
import org.snmp4j.Target;
import org.snmp4j.TransportMapping;
import org.snmp4j.UserTarget;
import org.snmp4j.event.ResponseEvent;
import org.snmp4j.mp.MPv3;
import org.snmp4j.mp.SnmpConstants;
import org.snmp4j.security.AuthMD5;
import org.snmp4j.security.PrivDES;
import org.snmp4j.security.SecurityLevel;
import org.snmp4j.security.SecurityModels;
import org.snmp4j.security.SecurityProtocols;
import org.snmp4j.security.USM;
import org.snmp4j.security.UsmUser;
import org.snmp4j.smi.Address;
import org.snmp4j.smi.OID;
import org.snmp4j.smi.OctetString;
import org.snmp4j.smi.UdpAddress;
import org.snmp4j.smi.VariableBinding;
import org.snmp4j.transport.DefaultUdpTransportMapping;

public class SNMPExampleVersion3 {

public static void main(String[] args) throws Exception {
TransportMapping<UdpAddress> transportMapping = new DefaultUdpTransportMapping();
Snmp snmp = new Snmp(transportMapping);

USM usm = new USM(SecurityProtocols.getInstance(), new OctetString(MPv3.createLocalEngineID()), 0);
SecurityModels.getInstance().addSecurityModel(usm);

transportMapping.listen();

ResponseEvent response = null;

ScopedPDU pdu = new ScopedPDU();
  pdu.add(new VariableBinding(new OID("1.3.6.1.2.1.1.2.0")));
  pdu.setType(PDU.GETNEXT);

  String[] communities = {"private", "cur", "console", "public", "dashboard"};

  // String address = "10.14.228.24"; // phxlb129a.phx.ebay.com big ip
  // String address = "10.10.66.82"; // sr-filer07b.smf.ebay.com filer
  String address = "localhost"; // lvslb05a.lvs.ebay.com netscaler
  address = address + "/" + 161;

  for (String communityString : communities) {
  Address targetAddress = new UdpAddress(address);
Target target = new UserTarget();

  //添加用户
snmp.getUSM().addUser(
new OctetString("MD5DES"),
new UsmUser(new OctetString("MD5DES"), AuthMD5.ID,
new OctetString("MD5DESUserAuthPassword"), PrivDES.ID,
new OctetString("MD5DESUserPrivPassword")));

//设置安全级别
target.setSecurityLevel(SecurityLevel.AUTH_PRIV);
target.setSecurityName(new OctetString("MD5DES"));
target.setVersion(SnmpConstants.version3);
pdu.setContextName(new OctetString(communityString));
target.setAddress(targetAddress);
target.setRetries(2);
target.setTimeout(3000);
target.setVersion(SnmpConstants.version3);

  // response = snmp.send(pdu, getTarget(), null);
  response = snmp.get(pdu, target);

  System.out.println("result: " + response.getResponse());
  }


}
}

Win7安装和配置SNMP - java使用SNMP4j获取监控信息

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