MRTG no CentOS 7
O que é o MRTG? MRTG é um gerador de gráficos de uso de banda de rede, cpu, memória, disco, etc que utiliza o protocolo SNMP para pegar as informações e gerar os gráficos. https://www.mrtg.com/ Abaixo deixo um Shell Script simples que criei após instalação e configuração:
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#!/bin/bash # #===============================================================================# # NOTA DE LICENÇA # # # # Este trabalho esta licenciado sob uma Licença Creative Commons # # Atribuição: Compartilhamento pela mesma Licença 3.0 Brasil. Para ver uma # # copia desta licença, visite http://creativecommons.org/licenses/by/3.0/br/ # # ou envie uma carta para Creative Commons, 171 Second Street, Suite 300, # # San Francisco, California 94105, USA. # # ---------------------------------------------------------------------------- # # Autor: Jhones Petter | [email protected] em 21/04/2016 # # Descrição: Instalacao e configuracao do MRTG no CentOS 7 # # Data criação: 31/01/2015 # # Versao: 1.0 - (./install_mrtg.sh) # # ----------------------------------------------------------------------------- # # os=$(egrep "^NAME|^VERSION" /etc/*release | sed 's/"//g' | cut -d= -f2 | cut -d" " -f1 | head -2 | tr '\n' ' ' | sed 's/ //g') if [ $os != "CentOS7" ]; then echo " =========================================== " echo " " echo " " echo " " echo " Esse sistema nao e CentOS7!" echo " " echo " " sleep 10 else echo " =========================================== " echo " " echo " " echo " " echo " Sera instalado os pacotes base, iniciar e habilitar servicos, e compilar o MRTG . . ." echo " " echo " " sleep 10 # Instalar pacotes base yum -y update && yum -y install epel-release && yum -y update && yum -y install net-snmp-utils net-snmp wget httpd vim gd-devel gd zlib libpng && yum -y groupinstall "Ferramentas de Desenvolvimento" # Inicia e habilita Apache e Snmp systemctl start snmpd httpd && systemctl enable snmpd httpd # Baixar pacote MRTG e descompactar cd /tmp/ && wget http://oss.oetiker.ch/mrtg/pub/mrtg-2.17.4.tar.gz && tar -zxvf mrtg-2.17.4.tar.gz && cd mrtg-2.17.4 # Compila MRTG ./configure && make && make install echo " =========================================== " echo " " echo " " echo " " echo " Sera configurado o SNMP e reiniciado o servico . . ." echo " " echo " " sleep 10 # Configura SNMP cp -Rfv /etc/snmp/snmpd.conf /etc/snmp/snmpd.conf.bkp cat <<EOF > /etc/snmp/snmpd.conf com2sec local localhost public com2sec mynetwork 192.168.1.0/24 public group grp1 v1 local group grp1 v2c local group grp2 v1 mynetwork group grp2 v2c mynetwork view systemview included .1.3.6.1.2.1.1 view systemview included .1.3.6.1.2.1.25.1.1 access grp1 "" any noauth exact all none none access grp2 "" any noauth exact all all none view all included .1 80 syslocation Linux CentOS7, Local syscontact Sysadmin <root@localhost> dontLogTCPWrappersConnects yes disk / disk /boot EOF systemctl restart snmpd echo " =========================================== " echo " " echo " " echo " " echo " Sera criado os diretorios do MRTG e configurado os arquivos CFGs e gerado o INDEX . . ." echo " " echo " " sleep 10 # Cria diretorios Apache e Etc mkdir /etc/mrtg/ && mkdir /var/www/html/mrtg chown apache:apache /var/www/html/mrtg && chmod -R 755 /var/www/html/mrtg systemctl restart httpd # Gera CFG do MRTG /usr/local/mrtg-2/bin/cfgmaker --output=/etc/mrtg/mrtg.cfg --global "workdir: /var/www/html/mrtg" -ifref=ip --global 'options[_]: growright,bits' public@localhost # Configura Server Stats cat <<EOF > /etc/mrtg/server-stats.cfg # Define global options LoadMIBs: /usr/share/snmp/mibs/UCD-SNMP-MIB.txt,/usr/share/snmp/mibs/TCP-MIB.txt workdir: /var/www/html/mrtg/ # CPU Monitoring # (Scaled so that the sum of all three values doesn't exceed 100) # Target[server.cpu]:ssCpuRawUser.0&ssCpuRawUser.0:public@localhost + ssCpuRawSystem.0&ssCpuRawSystem.0:public@localhost + ssCpuRawNice.0&ssCpuRawNice.0:public@localhost Title[server.cpu]: Server CPU Load PageTop[server.cpu]: <H1>CPU Load - System, User and Nice Processes</H1> MaxBytes[server.cpu]: 100 ShortLegend[server.cpu]: % YLegend[server.cpu]: CPU Utilization Legend1[server.cpu]: Current CPU percentage load LegendI[server.cpu]: Used LegendO[server.cpu]: Options[server.cpu]: growright,nopercent Unscaled[server.cpu]: ymwd # Memory Monitoring (Total Versus Available Memory) # Target[server.memory]: memAvailReal.0&memTotalReal.0:public@localhost Title[server.memory]: Free Memory PageTop[server.memory]: <H1>Free Memory</H1> MaxBytes[server.memory]: 100000000000 ShortLegend[server.memory]: B YLegend[server.memory]: Bytes LegendI[server.memory]: Free LegendO[server.memory]: Total Legend1[server.memory]: Free memory, not including swap, in bytes Legend2[server.memory]: Total memory Options[server.memory]: gauge,growright,nopercent kMG[server.memory]: k,M,G,T,P,X # Memory Monitoring (Percentage usage) # Title[server.mempercent]: Percentage Free Memory PageTop[server.mempercent]: <H1>Percentage Free Memory</H1> Target[server.mempercent]: ( memAvailReal.0&memAvailReal.0:public@localhost ) * 100 / ( memTotalReal.0&memTotalReal.0:public@localhost ) options[server.mempercent]: growright,gauge,transparent,nopercent Unscaled[server.mempercent]: ymwd MaxBytes[server.mempercent]: 100 YLegend[server.mempercent]: Memory % ShortLegend[server.mempercent]: Percent LegendI[server.mempercent]: Free LegendO[server.mempercent]: Free Legend1[server.mempercent]: Percentage Free Memory Legend2[server.mempercent]: Percentage Free Memory # Disk # Target[server.root]:dskPercent.1&dskPercent.2:public@localhost RouterUptime[server.root]: public@localhost MaxBytes[server.root]: 100 Title[server.root]: DISK USAGE PageTop[server.root]: <H1>DISK / and /boot Usage %</H1> Unscaled[server.root]: ymwd ShortLegend[server.root]: % YLegend[server.root]: DISK Utilization Legend1[server.root]: Root disk Legend2[server.root]: /boot disk Legend3[server.root]: Legend4[server.root]: LegendI[server.root]: Root disk LegendO[server.root]: /boot disk Options[server.root]: growright,gauge,nopercent EOF # Gera Index do MRTG /usr/local/mrtg-2/bin/indexmaker --output=/var/www/html/mrtg/index.html /etc/mrtg/mrtg.cfg /etc/mrtg/server-stats.cfg echo " =========================================== " echo " " echo " " echo " " echo " Sera criado o Shell Script de execucao do MRTG . . ." echo " " echo " " sleep 10 # Cria Shell Script para execucao do MRTG cat <<EOF > /etc/mrtg/mrtg.sh #!/bin/bash # Executa MRTG env LANG=C /usr/local/mrtg-2/bin/mrtg /etc/mrtg/mrtg.cfg --logging /var/log/mrtg.log env LANG=C /usr/local/mrtg-2/bin/mrtg /etc/mrtg/server-stats.cfg --logging /var/log/mrtg.log EOF chmod +x /etc/mrtg/mrtg.sh /etc/mrtg/mrtg.sh echo " =========================================== " echo " " echo " " echo " " echo " Sera configurado o Cron para execucao do MRTG a cada 5 minutos e o Logrotate dos logs do MRTG . . ." echo " " echo " " sleep 10 # Configura Cron para execucao a cada 5 minutos cat <<EOF > /etc/cron.d/mrtg # Run the hourly jobs SHELL=/bin/bash PATH=/sbin:/bin:/usr/sbin:/usr/bin MAILTO=root */5 * * * * root /etc/mrtg/mrtg.sh EOF # Configura Logrotate do Log cat <<EOF > /etc/logrotate.d/mrtg /var/log/mrtg.log { missingok copytruncate compress size 5M weekly } EOF echo " =========================================== " echo " " echo " " echo " " echo " Acesse: http://ip-servidor/mrtg/" fi |
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