nagios下用grafana绘图

使用pnp4nagios虽然可以出图了，但感觉还是不太好看，后来看到grafana绘图不错，捣鼓了下，便选择了 nagios + graphios + graphite + grafana 的绘图方案

grafana有个在线demo,可以体验下效果，地址：

ttp://play.grafana.org/

一.nagios安装

   网上教程很多，官方的文档也很详尽，这里就不表了

二.graphite安装

   graphite使用Django框架，python版本需要2.6及以上

   

  1.准备环境

   yum install -y bitmap bitmap-fonts-compat Django diagno django-tagging MySQL-python fontconfig cairo python-devel python-memcached python-twisted  pycairo mod_python python-ldap python-simplejson memcached python-zope-interface mod_wsgi python-sqlite2

   2.获取安装包并安装

  git clone https://github.com/graphite-project/graphite-web

  git clone https://github.com/graphite-project/carbon

  git clone https://github.com/graphite-project/whisper
　　
   解压软件包，进行软件包目录，然后执行以下命令：

  python setup.py install
  Graphite-web, Carbon, and Whisper安装方法相同

   除了通过git获取源码安装外，也可以用pip安装

  # pip install whisper
  # pip install carbon
  # pip install graphite-web

  

    3.添加配置文件

　cd /opt/graphite/conf/
　cp carbon.conf.example carbon.conf
　cp storage-schemas.conf.example storage-schemas.conf
　cp graphite.wsgi.example graphite.wsgi
　　
     配置apache

　cat /opt/graphite/examples/example-graphite-vhost.conf  >> /etc/httpd/conf/httpd.conf
    vi /etc/httpd/conf/httpd.conf
　修改端口为8080
　　<VirtualHost *:8080>
　修改WSGISocketPrefix 为 
　　WSGISocketPrefix /var/run/httpd/wsgi

    增加密码验证

        <Location />
                AuthName "graphite"
                AuthType Basic
                AuthUserFile /opt/graphite/htpasswd
                <LimitExcept OPTIONS>
                        require user graphite
                </LimitExcept>
        </Location> 

     4.初始化数据库

　cd /opt/graphite/webapp/graphite/
　cp local_settings.py.example local_settings.py
　python manage.py syncdb
　chown -R apache:apache /opt/graphite

  

     5.启动graphite

    设置登陆graphite的用户名及密码
   htpasswd  -c /opt/graphite/htpasswd graphite
   /opt/graphite/bin/carbon-cache.py start
  service  httpd start

   访问http://ip 即可进入graphite

  

三.grafana安装

  1.apache添加grafana配置

<VirtualHost *:8081>
        ServerName grafana
        DocumentRoot "/opt/grafana/src/"
　　<Location />
                AuthName "grafana restricted"
                AuthType Basic
                AuthUserFile /opt/grafana/htpasswd
                <LimitExcept OPTIONS>
                        require user grafana
                </LimitExcept>
        </Location>
</VirtualHost>  

  设置登陆grafana的用户名及密码
   htpasswd  -c /opt/grafana/htpasswd grafana

   2.apache下graphite添加CORS支持

<VirtualHost *:8080>

        Header set Access-Control-Allow-Origin "http://ip地址:8081"
        Header set Access-Control-Allow-Methods "GET, OPTIONS"
        Header set Access-Control-Allow-Headers "origin, authorization, accept"
        Header set Access-Control-Allow-Credentials true

   3.安装elasticsearch
   # 增加elasticsearch的repo:
   rpm --import http://packages.elasticsearch.org/GPG-KEY-elasticsearch

   vi  /etc/yum.repos.d/elasticsearch.repo
   [elasticsearch-1.0]
   name=Elasticsearch repository for 1.0.x packages
   baseurl=http://packages.elasticsearch.org/elasticsearch/1.0/centos
   gpgcheck=1
   gpgkey=http://packages.elasticsearch.org/GPG-KEY-elasticsearch
   enabled=1
   #直接yum安装
   yum install elasticsearch -y
   yum install npm -y

   #启动elasticsearch
   service elasticsearch start

   由于默认通过9200端口可以直接访问并操作elasticsearch，使得系统的安全性降低，需屏蔽外网访问9200端口，通过apache的代理来实现内部调用
   #elasticsearch proxy
   Listen 8082
   <VirtualHost *:8082>
        ProxyRequests Off
        ProxyPass / http://127.0.0.1:9200/
        ProxyPassReverse / https://127.0.0.1:9200/
        <Location />
                AuthName "es"
                AuthType Basic
                AuthUserFile /opt/grafana/eshtpasswd
                <LimitExcept OPTIONS>
                        require user elase
                </LimitExcept>
        </Location>
        Header set Access-Control-Allow-Methods "GET, POST, DELETE, OPTIONS, PUT"
        Header set Access-Control-Allow-Headers "Content-Type, X-Requested-With, X-HTTP-Method-Override, Origin, Accept, Authorization"
        Header set Access-Control-Allow-Credentials "true"
        Header set Cache-Control "max-age=0"
        Header set Access-Control-Allow-Origin "http://ip地址:8081"
   </VirtualHost>

   4.配置grafana

   获取源码

   wget http://grafanarel.s3.amazonaws.com/grafana-1.9.1.tar.gz

   tar zxvf grafana-1.9.1.tar.gz

   mv grafana-1.9.1 /opt/grafana

   cd /opt/grafana

   cp config.sample.js config.js

   vi config.js
   修改
   elasticsearch:"http://"+window.location.hostname+":9200",
   为
   elasticsearch: "http://username:password@ip地址:8082", #8082端口的用户名和密码

   修改
   graphiteUrl:"http://"+window.location.hostname+":8080",
   为
   graphiteUrl:"http://"username:password@ip地址:8080", #graphite的用户名和密码 

  

   设置登陆的用户及密码
   htpasswd  -c /opt/grafana/htpasswd grafana

   到这一步就配置完成了，打开浏览器，输入http://ip地址:8081 即可访问grafana。

   但现在graphite还获取不到nagios的数据，无法给nagios绘图，google了下，发现有个脚本graphios可以把nagios数据发送给graphite

四.安装graphios

  1.配置nagios
  vi  /usr/local/nagios/etc/nagios.cfg
  #添加以下内容

 service_perfdata_file=/opt/spool/nagios/graphios/service-perfdata
 service_perfdata_file_template=DATATYPE::SERVICEPERFDATA\tTIMET::$TIMET$\tHOSTNAME::$HOSTNAME$\tSERVICEDESC::$SERVICEDESC$\tSERVICEPERFDATA::$SERVICEPERFDATA$\tSERVICECHECKCOMMAND::$SERVICECHECKCOMMAND$\tHOSTSTATE::$HOSTSTATE$\tHOSTSTATETYPE::$HOSTSTATETYPE$\tSERVICESTATE::$SERVICESTATE$\tSERVICESTATETYPE::$SERVICESTATETYPE$\tGRAPHITEPREFIX::$_SERVICEGRAPHITEPREFIX$\tGRAPHITEPOSTFIX::$_SERVICEGRAPHITEPOSTFIX$

  service_perfdata_file_mode=a
  service_perfdata_file_processing_interval=15
  service_perfdata_file_processing_command=graphite_perf_service

 host_perfdata_file=/opt/spool/nagios/graphios/host-perfdata
 host_perfdata_file_template=DATATYPE::HOSTPERFDATA\tTIMET::$TIMET$\tHOSTNAME::$HOSTNAME$\tHOSTPERFDATA::$HOSTPERFDATA$\tHOSTCHECKCOMMAND::$HOSTCHECKCOMMAND$\tHOSTSTATE::$HOSTSTATE$\tHOSTSTATETYPE::$HOSTSTATETYPE$\tGRAPHITEPREFIX::$_HOSTGRAPHITEPREFIX$\tGRAPHITEPOSTFIX::$_HOSTGRAPHITEPOSTFIX$

  host_perfdata_file_mode=a
  host_perfdata_file_processing_interval=15
  host_perfdata_file_processing_command=graphite_perf_host

  注意：
  1`process_performance_data=1 此处的值要改为1，默认是0
  2`host_perfdata_file 和service_perfdata_file的路径

  3`以下目录的权限

  chown -R apache:apache /opt/spool/nagios/graphios/

  2.配置commands.cfg
  vi /usr/local/nagios/etc/objects/commands.cfg
  #添加以下内容
  define command {
      command_name            graphite_perf_host
      command_line            /bin/mv /var/spool/nagios/graphios/host-perfdata /var/spool/nagios/graphios/host-perfdata.$TIMET$
  }

  define command {
      command_name            graphite_perf_service
      command_line            /bin/mv /var/spool/nagios/graphios/service-perfdata /var/spool/nagios/graphios/service-perfdata.$TIMET$
  }

   3.获取安装包  

   github上进行了更新，未做测试，这里放测试过可用的版本

   http://download.csdn.net/detail/u012375924/8353521

   下载后解压即可

    tar xvf  graphios.tar

    mv graphios /opt/

    cp graphios.init /etc/init.d/graphios
    chown root:root /etc/init.d/graphios
    chmod 750 /etc/init.d/graphios

    vi /opt/graphios/graphios.py
    carbon_server = 'ip'   #改为服务器的ip
    spool_directory = '/opt/spool/nagios/graphios'   #spool文件路径
    log_file = '/var/log/graphios/graphios.log'  #日志存放路径

    #注意文件的权限
    chown nagios:nagios /opt/graphios/graphios.py
    chown nagios:nagios /var/log/graphios/graphios.log

    #测试graphios运行状况
    /opt/graphios/graphios.py -v

    看到如下信息

    Processed 2 files in /opt/spool/nagios/graphios

    查看/opt/spool/nagios/graphios是否有文件，如有文件，即是配置正确了。

    #启动graphios
    service graphios start     

  4.nagios使用graphios

     #在nagios的每台服务器配置文件中增加graphios的定义
     格式如下：
     _graphiteprefix             服务名称

    例如  

    define host {
        name                        myhost
        check_command               check_host_alive
        _graphiteprefix             monitoring.nagios01.pingto
    } 

以上的配置都完成后，重启nagios，等待几分钟，访问http://ip地址:8081 ，进入grafana，添加模板。即可看到grafana的绘图效果了