cacti监控远程linux机器配置（被监控端）

dfdh

　　

一、被监控机安装snmp

     yum install snmp

二、被监控机的配置

     vi /etc/snmp/snmpd.conf

做以下更改：

1、找到com2sec notConfigUser  default       public
改为：com2sec notConfigUser   192.168.1.1（改成监控服务器的ip）       public

2、找到access  notConfigGroup ""      any       noauth    exact  systemview  none none
改 为：access  notConfigGroup ""      any       noauth    exact  all  none  none

3、找到#view all    included  .1         80
将前面的 # 注释 去掉。

#以下为访问项目，如果想监控磁盘空间，load等需把注释去掉

#编译安装默认已去掉，自带安装的需手动把注释去掉

#  Make sure mountd is running

proc mountd #去掉前面的"#"

#  Make sure there are no more than 4 ntalkds running, but 0 is oktoo.

proc ntalkd 4

#  Make sure at least one sendmail, but less than or equal to 10 arerunning.

proc sendmail 10 1

# Check the / partition and make sure it contains at least 10 megs.

disk / 10000

# Check for loads:

load 12 14 14

三、重启snmpd服务

#/etc/init.d/snmpd restart
或
#killall -9 snmpd
#/usr/local/sbin/snmpd

四、iptables规则

假如B机开启了iptables并且INPUT默认策略为DROP
在第一条插入充许192.168.1.1(监控机)以udp协议访问snmpd默认161端口的规则

/sbin/iptables -I INPUT -p udp -m udp -s 192.168.1.1（监控机的IP） --dport 161 -jACCEPT

保存一下,防止重启服务后失效

/etc/init.d/iptablessave

五、测试snmp（可选）

在监控机上先看下系统信息
#snmpwalk -v 2c -c privatepass 192.168.0.17（被监控机） system

SNMPv2-MIB::sysDescr.0 = STRING: Linux touareg 2.6.18-128.el5 #1 SMP WedJan 21 10:41:14 EST 2009 x86_64

SNMPv2-MIB::sysObjectID.0 = OID: NET-SNMP-MIB::netSnmpAgentOIDs.10

DISMAN-EVENT-MIB::sysUpTimeInstance = Timeticks: (59664) 0:09:56.64

SNMPv2-MIB::sysContact.0 = STRING: Root <root@localhost> (configure/etc/snmp/snmp.local.conf)

SNMPv2-MIB::sysName.0 = STRING: touareg

SNMPv2-MIB::sysLocation.0 = STRING: Unknown (edit /etc/snmp/snmpd.conf)

SNMPv2-MIB::sysORLastChange.0 = Timeticks: (7) 0:00:00.07

SNMPv2-MIB::sysORID.1 = OID: SNMPv2-MIB::snmpMIB

SNMPv2-MIB::sysORID.2 = OID: TCP-MIB::tcpMIB

SNMPv2-MIB::sysORID.3 = OID: IP-MIB::ip

SNMPv2-MIB::sysORID.4 = OID: UDP-MIB::udpMIB

SNMPv2-MIB::sysORID.5 = OID: SNMP-VIEW-BASED-ACM-MIB::vacmBasicGroup

SNMPv2-MIB::sysORID.6 = OID:SNMP-FRAMEWORK-MIB::snmpFrameworkMIBCompliance

SNMPv2-MIB::sysORID.7 = OID: SNMP-MPD-MIB::snmpMPDCompliance

SNMPv2-MIB::sysORID.8 = OID: SNMP-USER-BASED-SM-MIB::usmMIBCompliance

SNMPv2-MIB::sysORDescr.1 = STRING: The MIB module for SNMPv2 entities

SNMPv2-MIB::sysORDescr.2 = STRING: The MIB module for managing TCPimplementations

SNMPv2-MIB::sysORDescr.3 = STRING: The MIB module for managing IP andICMP implementations

SNMPv2-MIB::sysORDescr.4 = STRING: The MIB module for managing UDPimplementations

SNMPv2-MIB::sysORDescr.5 = STRING: View-based Access Control Model forSNMP.

SNMPv2-MIB::sysORDescr.6 = STRING: The SNMP Management Architecture MIB.

SNMPv2-MIB::sysORDescr.7 = STRING: The MIB for Message Processing andDispatching.

SNMPv2-MIB::sysORDescr.8 = STRING: The management information definitionsfor the SNMP User-based Security Model.

SNMPv2-MIB::sysORUpTime.1 = Timeticks: (6) 0:00:00.06

SNMPv2-MIB::sysORUpTime.2 = Timeticks: (6) 0:00:00.06

SNMPv2-MIB::sysORUpTime.3 = Timeticks: (6) 0:00:00.06

SNMPv2-MIB::sysORUpTime.4 = Timeticks: (6) 0:00:00.06

SNMPv2-MIB::sysORUpTime.5 = Timeticks: (6) 0:00:00.06

SNMPv2-MIB::sysORUpTime.6 = Timeticks: (7) 0:00:00.07

SNMPv2-MIB::sysORUpTime.7 = Timeticks: (7) 0:00:00.07

SNMPv2-MIB::sysORUpTime.8 = Timeticks: (7) 0:00:00.07

没有问题，再看下磁盘信息
#snmpwalk -v 2c -c privatepass 192.168.0.17 .1.3.6.1.4.1.2021.9

UCD-SNMP-MIB::dskIndex.1 = INTEGER: 1

UCD-SNMP-MIB::dskPath.1 = STRING: /

UCD-SNMP-MIB::dskDevice.1 = STRING: /dev/mapper/VolGroup00-LogVol01

UCD-SNMP-MIB::dskMinimum.1 = INTEGER: 10000

UCD-SNMP-MIB::dskMinPercent.1 = INTEGER: -1

UCD-SNMP-MIB::dskTotal.1 = INTEGER: 44628400

UCD-SNMP-MIB::dskAvail.1 = INTEGER: 22383404

UCD-SNMP-MIB::dskUsed.1 = INTEGER: 19941408

UCD-SNMP-MIB::dskPercent.1 = INTEGER: 47

UCD-SNMP-MIB::dskPercentNode.1 = INTEGER: 1

UCD-SNMP-MIB::dskErrorFlag.1 = INTEGER: noError(0)

UCD-SNMP-MIB::dskErrorMsg.1 = STRING:

出现下面这个信息，你需要检查下A机snmpd.conf中“disk / 10000”前的注释有无去掉。

UCD-SNMP-MIB::dskTable = No Such Object available on this agent at thisOID

&quot;.1.3.6.1.4.1.2021.9&quot;代表磁盘
&quot;.1.3.6.1.4.1.2021.10&quot;代表load,可以参考snmpd.conf中的注释

六、添加被监控机器以显示图像

1、访问cacti

http://ip/cacti

2、增加监控设备

Console -> Devices->add

在设置页面配置

Description:test232
Hostname:218.241.223.232               
Host Template:ucd/net SNMP Host

Downed Device Detection: SNMP

SNMP Version:Version 1

保存后在页面左上角可以看到调试信息

test232(211.241.223.232)
SNMP Information
System:Linux touareg 2.6.18-128.el5 #1 SMP Wed Jan 21 10:41:14 EST 2009
x86_64
Uptime: 38790 (0 days, 0 hours, 6 minutes)
Hostname:test232
Location: Unknown (edit /etc/snmp/snmpd.conf)
Contact: Root root@localhost (configure /etc/snmp/snmp.local.conf)

1) ucd/net - CPU Usage Not Being Graphed (cpu负载,system,user,nice)
2) ucd/net - Load Average Not Being Graphed (系统平均负载,1分钟,5分钟,15分钟)
3) ucd/net - Memory Usage Not Being Graphed (内存使用,free,buffers,cache)

1) SNMP - Interface Statistics (网卡流量,in,out)
2) ucd/net - Get Monitored Partitions (根分区,free,used)

Not Being Graphed 表示还末生成图像,创建图像后会变成Is Being Graphed
我们可以再添加一些更详细的监控
Host MIB - Processes 监控进程数量
Host MIB - Logged in Users 监控登录用户

SNMP - Get Mounted Partitions 更多分区大小,Memory Buffer,Real Memory,Swap Space
SNMP - Get Processor Information 每个cpu的负载

3、临控对象增加图表

Console->New Graphs
在host中选择test232

勾选后选择create,就完成了图表创建。

4、添加到Graph Trees

图表创建后在Graph Management里可以看到图表，但点击导航上方的&quot;graphs&quot;是看不到的，需要添加到graph trees中。
Console -> Graph Trees -> (Edit) -> Graph Tree Items

Tree Item Type:host

Host:test232

创建后就可以在graph中看到了