mirror of
https://github.com/LCTT/TranslateProject.git
synced 2025-01-13 22:30:37 +08:00
geekpi
GitHub
commit
ea662bc14c
@ -1,97 +0,0 @@
|
||||
translating---geekpi
|
||||
|
||||
Monitoring network bandwidth with iftop command
|
||||
======
|
||||
System Admins are required to monitor IT infrastructure to make sure that everything is up & running. We have to monitor performance of hardware i.e memory, hdds & CPUs etc & so does we have to monitor our network. We need to make sure that our network is not being over utilised or our applications, websites might not work. In this tutorial, we are going to learn to use IFTOP utility.
|
||||
|
||||
( **Recommended read** :[ **Resource monitoring using Nagios**][1], [**Tools for checking system info**,][2] [**Important logs to monitor**][3])
|
||||
|
||||
Iftop is network monitoring utility that provides real time real time bandwidth monitoring. Iftop measures total data moving in & out of the individual socket connections i.e. it captures packets moving in and out via network adapter & than sums those up to find the bandwidth being utilized.
|
||||
|
||||
## Installation on Debian/Ubuntu
|
||||
|
||||
Iftop is available with default repositories of Debian/Ubuntu & can be simply installed using the command below,
|
||||
|
||||
```
|
||||
$ sudo apt-get install iftop
|
||||
```
|
||||
|
||||
## Installation on RHEL/Centos using yum
|
||||
|
||||
For installing iftop on CentOS or RHEL, we need to enable EPEL repository. To enable repository, run the following on your terminal,
|
||||
|
||||
### RHEL/CentOS 7
|
||||
|
||||
```
|
||||
$ rpm -Uvh https://dl.fedoraproject.org/pub/epel/7/x86_64/e/epel-release-7-10.noarch.rpm
|
||||
```
|
||||
|
||||
### RHEL/CentOS 6 (64 Bit)
|
||||
|
||||
```
|
||||
$ rpm -Uvh http://download.fedoraproject.org/pub/epel/6/x86_64/epel-release-6-8.noarch.rpm
|
||||
```
|
||||
|
||||
### RHEL/CentOS 6 (32 Bit)
|
||||
|
||||
```
|
||||
$ rpm -Uvh http://dl.fedoraproject.org/pub/epel/6/i386/epel-release-6-8.noarch.rpm
|
||||
```
|
||||
|
||||
After epel repository has been installed, we can now install iftop by running,
|
||||
|
||||
```
|
||||
$ yum install iftop
|
||||
```
|
||||
|
||||
This will install iftop utility on your system. We will now use it to monitor our network,
|
||||
|
||||
## Using IFTOP
|
||||
|
||||
You can start using iftop by opening your terminal windown & type,
|
||||
|
||||
```
|
||||
$ iftop
|
||||
```
|
||||
|
||||
![network monitoring][5]
|
||||
|
||||
You will now be presented with network activity happening on your machine. You can also use
|
||||
|
||||
```
|
||||
$ iftop -n
|
||||
```
|
||||
|
||||
Which will present the network information on your screen but with '-n' , you will not be presented with the names related to IP addresses but only ip addresses. This option allows for some bandwidth to be saved, which goes into resolving IP addresses to names.
|
||||
|
||||
Now we can also see all the commands that can be used with iftop. Once you have ran iftop, press 'h' button on the keyboard to see all the commands that can be used with iftop.
|
||||
|
||||
![network monitoring][7]
|
||||
|
||||
To monitor a particular network interface, we can mention interface with iftop,
|
||||
|
||||
```
|
||||
$ iftop -I enp0s3
|
||||
```
|
||||
|
||||
You can check further options that are used with iftop using help, as mentioned above. But these mentioned examples are only what you might to monitor network.
|
||||
|
||||
|
||||
--------------------------------------------------------------------------------
|
||||
|
||||
via: http://linuxtechlab.com/monitoring-network-bandwidth-iftop-command/
|
||||
|
||||
作者：[SHUSAIN][a]
|
||||
译者：[译者ID](https://github.com/译者ID)
|
||||
校对：[校对者ID](https://github.com/校对者ID)
|
||||
|
||||
本文由 [LCTT](https://github.com/LCTT/TranslateProject) 原创编译，[Linux中国](https://linux.cn/) 荣誉推出
|
||||
|
||||
[a]:http://linuxtechlab.com/author/shsuain/
|
||||
[1]:http://linuxtechlab.com/installing-configuring-nagios-server/
|
||||
[2]:http://linuxtechlab.com/commands-system-hardware-info/
|
||||
[3]:http://linuxtechlab.com/important-logs-monitor-identify-issues/
|
||||
[4]:https://i1.wp.com/linuxtechlab.com/wp-content/plugins/a3-lazy-load/assets/images/lazy_placeholder.gif?resize=661%2C424
|
||||
[5]:https://i0.wp.com/linuxtechlab.com/wp-content/uploads/2017/04/iftop-1.jpg?resize=661%2C424
|
||||
[6]:https://i1.wp.com/linuxtechlab.com/wp-content/plugins/a3-lazy-load/assets/images/lazy_placeholder.gif?resize=663%2C416
|
||||
[7]:https://i0.wp.com/linuxtechlab.com/wp-content/uploads/2017/04/iftop-help.jpg?resize=663%2C416
|
||||
@ -0,0 +1,95 @@
|
||||
使用 iftop 命令监控网络带宽
|
||||
======
|
||||
系统管理员需要监控 IT 基础设施来确保一切正常运行。我们需要监控硬件也就是内存、硬盘和 CPU 等的性能，我们也必须监控我们的网络。我们需要确保我们的网络不被过度使用，或者我们的程序，网站可能无法正常工作。在本教程中，我们将学习使用 IFTOP。
|
||||
|
||||
（**推荐阅读**：[**使用 Nagios** 进行资源监控][1]、[**用于检查系统信息的工具**][2] 、[**要监控的重要日志**][3] ）
|
||||
|
||||
Iftop 是网络监控工具，它提供实时带宽监控。 Iftop 测量进出各个套接字连接的总数据量，即它捕获通过网络适配器收到或发出的数据包，然后将这些数据相加以得到使用的带宽。
|
||||
|
||||
## 在 Debian/Ubuntu 上安装
|
||||
|
||||
Iftop 存在于 Debian/Ubuntu 的默认仓库中，可以使用下面的命令安装：
|
||||
|
||||
```
|
||||
$ sudo apt-get install iftop
|
||||
```
|
||||
|
||||
## 使用 yum 在 RHEL/Centos 上安装
|
||||
|
||||
要在 CentOS 或 RHEL 上安装 iftop，我们需要启用 EPEL 仓库。要启用仓库，请在终端上运行以下命令：
|
||||
|
||||
### RHEL/CentOS 7
|
||||
|
||||
```
|
||||
$ rpm -Uvh https://dl.fedoraproject.org/pub/epel/7/x86_64/e/epel-release-7-10.noarch.rpm
|
||||
```
|
||||
|
||||
### RHEL/CentOS 6（64位）
|
||||
|
||||
```
|
||||
$ rpm -Uvh http://download.fedoraproject.org/pub/epel/6/x86_64/epel-release-6-8.noarch.rpm
|
||||
```
|
||||
|
||||
### RHEL/CentOS 6 （64位）
|
||||
|
||||
```
|
||||
$ rpm -Uvh http://dl.fedoraproject.org/pub/epel/6/i386/epel-release-6-8.noarch.rpm
|
||||
```
|
||||
|
||||
epel 仓库安装完成后，我们可以用下面的命令安装 iftop：
|
||||
|
||||
```
|
||||
$ yum install iftop
|
||||
```
|
||||
|
||||
这将在你的系统上安装 iftop。我们现在将用它来监控我们的网络。
|
||||
|
||||
## 使用 IFTOP
|
||||
|
||||
可以打开终端窗口，并输入下面的命令使用 iftop：
|
||||
|
||||
```
|
||||
$ iftop
|
||||
```
|
||||
|
||||
![network monitoring][5]
|
||||
|
||||
现在你将看到计算机上发生的网络活动。你也可以使用：
|
||||
|
||||
```
|
||||
$ iftop -n
|
||||
```
|
||||
|
||||
这将在屏幕上显示网络信息，但使用 “-n”，则不会显示与 IP 地址相关的名称，只会显示 IP 地址。这个选项能节省一些将 IP 地址解析为名称的带宽。
|
||||
|
||||
我们也可以看到 iftop 可以使用的所有命令。运行 iftop 后，按下键盘上的 “h” 查看 iftop 可以使用的所有命令。
|
||||
|
||||
![network monitoring][7]
|
||||
|
||||
要监控特定的网络接口，我们可以在 iftop 后加上接口名：
|
||||
|
||||
```
|
||||
$ iftop -I enp0s3
|
||||
```
|
||||
|
||||
如上所述，你可以使用帮助来查看 iftop 可以使用的更多选项。但是这些提到的例子只是可能只是监控网络。
|
||||
|
||||
|
||||
--------------------------------------------------------------------------------
|
||||
|
||||
via: http://linuxtechlab.com/monitoring-network-bandwidth-iftop-command/
|
||||
|
||||
作者：[SHUSAIN][a]
|
||||
译者：[geekpi](https://github.com/geekpi)
|
||||
校对：[校对者ID](https://github.com/校对者ID)
|
||||
|
||||
本文由 [LCTT](https://github.com/LCTT/TranslateProject) 原创编译，[Linux中国](https://linux.cn/) 荣誉推出
|
||||
|
||||
[a]:http://linuxtechlab.com/author/shsuain/
|
||||
[1]:http://linuxtechlab.com/installing-configuring-nagios-server/
|
||||
[2]:http://linuxtechlab.com/commands-system-hardware-info/
|
||||
[3]:http://linuxtechlab.com/important-logs-monitor-identify-issues/
|
||||
[4]:https://i1.wp.com/linuxtechlab.com/wp-content/plugins/a3-lazy-load/assets/images/lazy_placeholder.gif?resize=661%2C424
|
||||
[5]:https://i0.wp.com/linuxtechlab.com/wp-content/uploads/2017/04/iftop-1.jpg?resize=661%2C424
|
||||
[6]:https://i1.wp.com/linuxtechlab.com/wp-content/plugins/a3-lazy-load/assets/images/lazy_placeholder.gif?resize=663%2C416
|
||||
[7]:https://i0.wp.com/linuxtechlab.com/wp-content/uploads/2017/04/iftop-help.jpg?resize=663%2C416
|
||||
Loading…
Reference in New Issue
Block a user