mrtg 설치 (cpu, ram, hdd 사용량)

1. 설치
# yum install net-snmp* mrtg*
 
 
2. 사용자 및 디렉토리 생성
# useradd mrtg
# mkdir /home/mrtg/public_html
# mkdir /home/mrtg/conf

 

 

3. 설정
아파치 웹서버에 virtualhost 설정을 추가합니다.
<VirtualHost *:80>
    DocumentRoot "/home/mrtg/public_html"
    ServerName mrtg.sysdocu.tistory.com
    ErrorLog "logs/mrtg.sysdocu.tistory.com-error_log"
    CustomLog "logs/mrtg.sysdocu.tistory.com-access_log" common
</VirtualHost>
 
아파치 데몬을 restart 하여 virtualhost 설정을 적용합니다.

# /usr/local/apache/bin/apachectl restart
 
그다음 아래 파일을 열고 내용을 입력합니다.

# vi /etc/snmp/snmpd.conf
===================================================
com2sec local  192.168.10.2     g_snmp
group   ManagedGroup v1           local
group   ManagedGroup v2c          local
group   ManagedGroup usm          local
view all    included  .1                              80
access  ManagedGroup ""      any       noauth    exact  all all none

disk /
disk /backup
===================================================

 

* 디스크는 2개로, 각각의 파티션은 /, /backup 으로 구성되었을때의 예입니다.

 

# vi /home/mrtg/conf/mrtg.cfg
===================================================
EnableIPv6: no
WorkDir: /home/mrtg/public_html
Language: korean
Options[_]: bits,growright
 
LoadMIBs: /usr/share/snmp/mibs/UCD-SNMP-MIB.txt

Target[192.168.10.2_cpu]: ssCpuUser.0&ssCpuIdle.0:g_snmp@192.168.10.2
Options[192.168.10.2_cpu]: gauge,nopercent,growright
MaxBytes[192.168.10.2_cpu]: 100
Title[192.168.10.2_cpu]: dev1 - User vs Idle CPU Usage
Unscaled[192.168.10.2_cpu]: ywmd
ShortLegend[192.168.10.2_cpu]: %
YLegend[192.168.10.2_cpu]: CPU Utilization
Legend1[192.168.10.2_cpu]: User CPU in % (Load)
Legend2[192.168.10.2_cpu]: Idle CPU in % (Load)
Legend3[192.168.10.2_cpu]:
Legend4[192.168.10.2_cpu]:
LegendI[192.168.10.2_cpu]: User
LegendO[192.168.10.2_cpu]: Idle
PageTop[192.168.10.2_cpu]: <h1>CPU 사용량</h1>
 <TABLE>
    <TR><TD>호스트명:</TD>     <TD>SYSDOCU</TD></TR>

    <TR><TD>IP:</TD> <TD>192.168.10.2</TD></TR>
 </TABLE>
 
Target[192.168.10.2_load]: laLoad.1&laLoad.2:g_snmp@192.168.10.2 * 100
Options[192.168.10.2_load]: gauge,integer,nopercent,growright
WithPeak[192.168.10.2_load]: dev1
MaxBytes[192.168.10.2_load]: 10000
Title[192.168.10.2_load]: dev1 - Load Average
YLegend[192.168.10.2_load]: Load Average
ShortLegend[192.168.10.2_load]:
Legend1[192.168.10.2_load]: Load average for 1 Min
Legend2[192.168.10.2_load]: Load average for 5 Min
Legend3[192.168.10.2_load]: Max load average for 1 Min
Legend4[192.168.10.2_load]: Max Load average for 5 Min
LegendI[192.168.10.2_load]: 1min:
LegendO[192.168.10.2_load]: 5min:
YTicsFactor[192.168.10.2_load]: 0.01
PageTop[192.168.10.2_load]: <h1>CPU 부하율</h1>
 <TABLE>
    <TR><TD>호스트명:</TD>     <TD>SYSDOCU</TD></TR>
    <TR><TD>IP</TD> <TD>192.168.10.2</TD></TR>
 </TABLE>
 
Target[192.168.10.2_mem]: (memTotalReal.0&memTotalSwap.0:g_snmp@192.168.10.2 - memBuffer.0&memAvailSwap.0:g_snmp@192.168.10.2 - memCached.0&memIndex.0:g_snmp@192.168.10.2 - memAvailReal.0&memIndex.0:g_snmp@192.168.10.2) / memTotalReal.0&memTotalSwap.0:g_snmp@192.168.10.2 * 100
Options[192.168.10.2_mem]: nopercent,growright,gauge,noinfo
Title[192.168.10.2_mem]: Free Memory
MaxBytes[192.168.10.2_mem]: 100
kilo[192.168.10.2_mem]: 1024
YLegend[192.168.10.2_mem]: bytes
ShortLegend[192.168.10.2_mem]: %
Unscaled[192.168.10.2_mem] : ymwd
LegendI[192.168.10.2_mem]: Real Memory:
LegendO[192.168.10.2_mem]: Swap Memory:
Legend1[192.168.10.2_mem]: Free memory, not including swap, in bytes
PageTop[192.168.10.2_mem]: <h1>Memory 사용량</h1>
 <TABLE>
    <TR><TD>호스트명:</TD>     <TD>SYSDOCU</TD></TR>
    <TR><TD>IP</TD> <TD>192.168.10.2</TD></TR>
 </TABLE>

 

Target[192.168.10.2_hdd1]: dskPercent.1&dskPercent.2:g_snmp@192.168.10.2

Title[192.168.10.2_hdd1]: Disk Partition Usage
MaxBytes[192.168.10.2_hdd1]: 100
ShortLegend[192.168.10.2_hdd1]: %
YLegend[192.168.10.2_hdd1]: Disk usage
LegendI[192.168.10.2_hdd1]: /
LegendO[192.168.10.2_hdd1]: /backup
Options[192.168.10.2_hdd1]: gauge,growright,nopercent
Unscaled[192.168.10.2_hdd1]: ymwd
PageTop[192.168.10.2_hdd1]: <H1>디스크 사용량</H1>
 <TABLE>
    <TR><TD>호스트명:</TD>     <TD>SYSDOCU</TD></TR>
    <TR><TD>IP:</TD> <TD></TD></TR>
    <TR><TD>/</TD><TD> </TD></TR>
    <TR><TD>/backup</TD><TD> </TD></TR>
 </TABLE>
===================================================

 

4. index 페이지 만들기
# indexmaker --title "SYSDOCU MRTG" --output /home/mrtg/public_html/index.html /home/mrtg/conf/mrtg.cfg

 

5. 스케쥴러 등록
아래 명령을 통해 mrtg 데이타를 생성합니다.
처음 명령을 내릴경우 경고메세지가 뜨지만, 이는 처음이라 데이타 파일이 없다는 뜻입니다.
몇번 더 실행하면 나타나지 않는것을 볼수 있습니다.

# /usr/bin/mrtg /home/mrtg/conf/mrtg.cfg

지속적으로 5분마다 데이타 갱신이 되도록 crontab 에 등록합니다.

# crontab -e
===================================================
mailto=""
*/5 * * * * /usr/bin/mrtg /home/mrtg/conf/mrtg.cfg --logging /var/log/mrtg.log
===================================================