MIB（Management Information Base，管理信息库）的作用就是用来描述树的层次结构，它是所监控网络设备的标准变量定义的集合。在图1-1中，管理对象B可以用一串数字{1.2.1.1}唯一确定，这串数字是管理对象的对象标识符（Object Identifier）。
系统支持的常见MIB如下表1-1所示。
vi /etc/snmp/snmpd.conf
com2sec notConfigUser 127.0.0.1 public
access notConfigGroup "" any noauth exact all none none
view all included .1 80
service snmpd restart
3、cacti其他配置
1)、php设置时区
1
2
3
vi /etc/php.ini
date.timezone = Asia/Shanghai
service httpd restart
yum install -y net-snmp-*
vi /etc/snmp/snmpd.conf
com2sec notConfigUser 192.168.0.10 public #改为允许监控主机的IP
access notConfigGroup "" any noauth exact all none none
view all included .1 80
service snmpd restart #重启snmp
7、相关详细配制1 --- 以下为通过RRDtool命令查看数据
[root@localhost ~]# yum install net-snmp
[root@localhost ~]# yum install net-snmp-utils
[root@localhost ~]# snmpwalk -v 2c -c public localhost host
HOST-RESOURCES-MIB::hrSystemUptime.0 = Timeticks: (1618864) 4:29:48.64
HOST-RESOURCES-MIB::hrSystemUptime.0 = No more variables left in this MIB View (It is past the end of the MIB tree)
[root@localhost ~]# snmpwalk -v 2c -c public localhost
SNMPv2-MIB::sysDescr.0 = STRING: Linux localhost.localdomain 2.6.18-164.el5PAE #1 SMP Tue Aug 18 15:59:11 EDT 2009 i686
SNMPv2-MIB::sysObjectID.0 = OID: NET-SNMP-MIB::netSnmpAgentOIDs.10
DISMAN-EVENT-MIB::sysUpTimeInstance = Timeticks: (745096) 2:04:10.96
SNMPv2-MIB::sysContact.0 = STRING: Root (configure /etc/snmp/snmp.local.conf)
SNMPv2-MIB::sysName.0 = STRING: localhost.localdomain
SNMPv2-MIB::sysLocation.0 = STRING: Unknown (edit /etc/snmp/snmpd.conf)
SNMPv2-MIB::sysORLastChange.0 = Timeticks: (13) 0:00:00.13
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 ma
[root@localhost ~]# vi /etc/snmp/snmpd.conf
# First, map the community name "public" into a "security name"
# sec.name source community
#com2sec notConfigUser default public
com2sec notConfigUser 127.0.0.1 mypublic
com2sec notConfigUser 10.109.0.0/16 mypublic
# Second, map the security name into a group name:
# groupName securityModel securityName
group notConfigGroup v1 notConfigUser
group notConfigGroup v2c notConfigUser
[root@localhost ~]# service snmpd restart
[root@localhost ~]# cat insert.sh
#!/bin/bash
#
for I in {1..200000}; do
mysql -e "INSERT INTO testdb.tb1(NAME) VALUES ('stu$I')"
mysql -e "SELECT * FROM testdb.tb1" &> /dev/null
done
[root@localhost ~]# cat getselect.sh
#!/bin/bash
#
while true; do
SELECT=`mysql --batch -e "SHOW GLOBAL STATUS LIKE 'com_select'" | awk '/Com_select/{print $2}'`
rrdtool update mysql.rrd N:$SELECT
sleep 3
done
[root@localhost cacti]# mysqladmin create cactidb
[root@localhost cacti]# mysql cactidb < cacti.sql
[root@localhost cacti]# mysql -e "GRANT ALL ON cactidb.* TO cactiuser@localhost IDENTIFIED BY 'cactiuser'"
[root@localhost cacti]# mysqladmin flush-privileges
[root@localhost cacti]# mysql -ucactiuser -p
mysql> show databases;
+--------------------+
| Database |
+--------------------+
| information_schema |
| cactidb |
| test |
+--------------------+
3 rows in set (0.01 sec)
[root@localhost cacti]# vi config.php
$database_type = "mysql";
$database_default = "cactidb";
$database_hostname = "localhost";
$database_username = "cactiuser";
$database_password = "cactiuser";
$database_port = "3306";
$database_ssl = false;
/*
Edit this to point to the default URL of your Cacti install
ex: if your cacti install as at http://serverip/cacti/ this
would be set to /cacti/
*/
//$url_path = "/cacti/";
$url_path = "/";
[root@localhost include]# useradd cactiuser
[root@localhost cacti]# pwd
/web/vhosts/cacti
[root@localhost cacti]# chown -R cactiuser:cactiuser rra/ log
poller.php --===>> Spine
[root@localhost cacti]# echo '*/5 * * * * /usr/local/php/bin/php /usr/local/apache/htdocs/cacti/poller.php &>/dev/null' > /var/spool/cron/cactiuser #自动5分钟执行一次poller.php
[root@localhost cacti]# crontab -u cactiuser -e
[root@localhost vhosts]# vi /etc/php.ini
[Date]
; Defines the default timezone used by the date functions
; http://php.net/date.timezone
;date.timezone =
date.timezone = PRC
[root@localhost vhosts]# service httpd restart
[cactiuser@localhost ~]$ /usr/local/php/bin/php /web/vhosts/cacti/poller.php
02/24/2017 09:44:13 AM - SYSTEM STATS: Time:0.1567 Method:cmd.php Processes:1 Threads:N/A Hosts:2 HostsPerProcess:2 DataSources:0 RRDsProcessed:0
[root@localhost log]# vi /usr/local/apache/htdocs/cacti/log/cacti.log
02/24/2017 09:40:01 AM - SYSTEM STATS: Time:0.1457 Method:cmd.php Processes:1 Threads:N/A Hosts:2 HostsPerProcess:2 DataSources:0 RRDsProcessed:0
[root@localhost rra]# ls /usr/local/apache/htdocs/cacti/rra/
localhost_load_1min_5.rrd localhost_mem_swap_4.rrd localhost_users_6.rrd
localhost_mem_buffers_3.rrd localhost_proc_7.rrd
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