软件功能：

通过collectd软件来监控收集kvm虚拟机的性能数据，包含cpu，memory、磁盘IO、网络流量等

通过visage软件将收集到的数据绘制图形。

安装：

系统环境：ubuntu12.04

collectd

首先、在collectd官网下载collectd包collectd-5.4.0

安装collectd依赖包

apt-get install bison flex autoconf pkg-config libtool libgcrypt11-dev librrd-dev

安装完毕后，到collectd-5.4.0文件夹下编译源代码并安装

./configure --prefix=/ --exec-prefix=/usr  --enable-cpu --enable-network --enable-libvirt --enable-logfile --enable-rrdtool  --enable-rrdcached

make&&make install

改动配置

mkdir /etc/collect

mv /etc/collectd.conf /etc/collect

vi /etc/collect/collectd.conf

在collectd.conf文件里改动内容

LoadPlugin syslog

LoadPlugin logfile

<Plugin logfile>

        LogLevel info

        File STDOUT

        Timestamp true

        PrintSeverity false

</Plugin>

<Plugin syslog>

        LogLevel info

</Plugin>

LoadPlugin cpu

LoadPlugin df

LoadPlugin disk

LoadPlugin interface

LoadPlugin irq

LoadPlugin libvirt

LoadPlugin load

LoadPlugin memory

LoadPlugin network

LoadPlugin processes

LoadPlugin rrdcached

LoadPlugin rrdtool

LoadPlugin users

<Plugin network>

#       # client setup:

        Server "192.168.0.12" "25826"          //客户端配置收集数据的服务端 IP +port

        Server "192.168.0.16" "25826"

#       <Server "239.192.74.66" "25826">

#               SecurityLevel Encrypt

#               Username "user"

#               Password "secret"

#               Interface "eth0"

#       </Server>

#       TimeToLive "128"

#

#       # server setup:

        Listen "192.168.0.16" "25826"            //collectd作为收集服务端须要打开listen IP + port

#       <Listen "239.192.74.66" "25826">

</Plugin>

<Plugin libvirt>

        Connection "qemu:///system"

        RefreshInterval 60

#       Domain "name"

        BlockDevice "/:hdc/"

#       InterfaceDevice "name:device"

        IgnoreSelected true

        HostnameFormat uuid

        InterfaceFormat "address"

</Plugin>

在安装文件夹下将collectd运行文件复制到/ect/init.d/文件夹下然后启动collectd

service collectd start

visage

安装visage依赖包

apt-get install -y build-essential librrd-ruby ruby ruby-dev rubygems

安装visage软件

apt-get install gem

gem install visage-app

启动visage

visage-app start

启动后訪问visage-app的web界面

http://visage-app-server:9292

错误解答：

启动visage-app报错：

root@PS-8:/# visage-app start

/var/lib/gems/1.8/gems/visage-app-2.1.0/lib/visage-app/types.rb:19:in `initialize': No such file or directory - /usr/share/collectd/types.db (Errno::ENOENT)

    from /var/lib/gems/1.8/gems/visage-app-2.1.0/lib/visage-app/types.rb:19:in `new'

    from /var/lib/gems/1.8/gems/visage-app-2.1.0/lib/visage-app/types.rb:19:in `build'

    from /var/lib/gems/1.8/gems/visage-app-2.1.0/lib/visage-app/types.rb:10:in `initialize'

    from /var/lib/gems/1.8/gems/visage-app-2.1.0/lib/visage-app.rb:34:in `new'

    from /var/lib/gems/1.8/gems/visage-app-2.1.0/lib/visage-app.rb:34

    from /var/lib/gems/1.8/gems/visage-app-2.1.0/lib/visage-app/config.rb:6:in `use'

    from /var/lib/gems/1.8/gems/visage-app-2.1.0/lib/visage-app.rb:31

    from /var/lib/gems/1.8/gems/sinatra-1.3.2/lib/sinatra/base.rb:1273:in `configure'

    from /var/lib/gems/1.8/gems/visage-app-2.1.0/lib/visage-app.rb:30

    from /usr/lib/ruby/vendor_ruby/1.8/rubygems/custom_require.rb:36:in `gem_original_require'

    from /usr/lib/ruby/vendor_ruby/1.8/rubygems/custom_require.rb:36:in `require'

    from /var/lib/gems/1.8/gems/visage-app-2.1.0/bin/visage-app:17

    from /usr/local/bin/visage-app:19:in `load'

    from /usr/local/bin/visage-app:19

ollectd编译安转types.rb默认在文件夹/share/collectd/文件夹下，将types.rb文件复制到/usr/share/collectd文件夹下，并将collectd.conf配置文件里设置參数：

TypesDB "/usr/share/collectd/types.db" 

然后再启动collectd和visage-app

visage-app收集不到数据

在visage-app界面上查看不到server？

visage-app启动默认是在文件夹/var/lib/collectd/rrd文件夹下去收集server，可是collectd编译安装数据默认在/var/lib/collectd/文件夹下。在collectd.conf配置文件里设置參数：

BaseDir     "/var/lib/collectd/rrd"