Collectd & InfluxDb & Grafana 之一: 常用系统统计

Collectd

安装

apt-get install collected

配置

# vi /etc/collectd/collectd.conf
Hostname "localhost"
FQDNLookup true
Interval 5
Timeout         4
LoadPlugin syslog
<Plugin syslog>
        LogLevel info
</Plugin>
LoadPlugin battery
LoadPlugin cpu
LoadPlugin cpufreq
LoadPlugin df
LoadPlugin disk
LoadPlugin entropy
LoadPlugin interface
LoadPlugin irq
LoadPlugin load
LoadPlugin memory
LoadPlugin network
LoadPlugin processes
LoadPlugin rrdtool
LoadPlugin swap
LoadPlugin users
<Plugin df>
        FSType rootfs
        FSType sysfs
        FSType proc
        FSType devtmpfs
        FSType devpts
        FSType tmpfs
        FSType fusectl
        FSType cgroup
        IgnoreSelected true
        ReportByDevice true
        ReportInodes true
        ValuesAbsolute true
        ValuesPercentage true
</Plugin>
<Plugin interface>
        Interface "eno1"
        IgnoreSelected false
</Plugin>
# 网络插件, 把Collectd搜集的数据通过接口eno1发往192.168.212.127:25826
<Plugin network>
       <Server "192.168.212.127" "25826">
                Interface "eno1"
        </Server>
</Plugin>
<Plugin rrdtool>
        DataDir "/var/lib/collectd/rrd"
</Plugin>
<Include "/etc/collectd/collectd.conf.d">
        Filter "*.conf"
</Include>

InfluxDB

安装

wget https://dl.influxdata.com/influxdb/releases/influxdb_1.0.0_amd64.deb
sudo dpkg -i influxdb_1.0.0_amd64.deb

启动

root@ubuntu:~# service influxdb status
influxdb process is not running [ FAILED ]
root@ubuntu:~# service influxdb start
Starting influxdb...
influxdb process was started [ OK ]

运行客户端influx创建数据库

➜  ~ influx
> CREATE DATABASE "collectdb"

编辑 /etc/influxdb/influxdb.conf, 找到 [[collectd]]部分, 修改如下

[[collectd]]
  enabled = true
  # 在 `192.168.212.127:25826` 上监听从 Collectd 发过来的数据.
  bind-address = "192.168.212.127:25826" 
  database = "collectdb"
  typesdb = "/usr/share/collectd/types.db"
  batch-size = 5000
  batch-pending = 10
  batch-timeout = "10s"
  read-buffer = 0

重启

service influxdb restart

Grafana

安装

# vi /etc/apt/source.list.d/grafana.list
deb https://packagecloud.io/grafana/stable/debian/ wheezy main

curl https://packagecloud.io/gpg.key | sudo apt-key add -
sudo apt-get update
sudo apt-get install grafana

配置

http://docs.grafana.org/insta...

网络流量统计

切换编辑模式, 然后输入自定义SQL查询

输入查询语句

SELECT derivative("value") AS "value" FROM "interface_rx" WHERE "host" = 'localhost' AND "type" = 'if_octets' AND "instance" = 'eno1'

函数 derivative 意为导数, 微积分中的概念. value 为传输总量(字节), derivative("value") 为 value 在时间上的增量.

其中

• host = localhost

• type = if_octets

• instance = eno1

系统负载

SELECT mean("value") FROM "load_longterm" WHERE "host" = 'localhost' AND $timeFilter GROUP BY time($interval) fill(null)
SELECT mean("value") FROM "load_midterm" WHERE "host" = 'localhost' AND $timeFilter GROUP BY time($interval) fill(null)
SELECT mean("value") FROM "load_shortterm" WHERE "host" = 'localhost' AND $timeFilter GROUP BY time($interval) fill(null)

内存用量

SELECT mean("value") FROM "memory_value" WHERE "type_instance" = 'used' AND $timeFilter GROUP BY time($interval) fill(null)