CentOS/RHEL: How To Use iftop to display network interface bandwidth usage
How Do I monitory network interface bandwidth usage on my centos or rhel linux? How to display network bandwidth usage under centos or rhel operating system? this post will show you how to install and use iftop utility to display network interface bandwidth usage.
You need to install iftop pcakge firstly using yum command . to install iftop pcakge, you have to setup epel repository on your current centos or rhel system.
Download Epel Repo
Using the wget command to download epel package so that to install it.
wget http://epel.mirror.net.in/epel/6/i386/epel-release-6-8.noarch.rpm
outputs:
Resolving epel.mirror.net.in... 120.88.47.14, 2401:4800:2121:c0:ff:ee:ee:2 Connecting to epel.mirror.net.in|120.88.47.14|:80... connected. HTTP request sent, awaiting response... 200 OK Length: 14540 (14K) [application/x-redhat-package-manager] Saving to: “epel-release-6-8.noarch.rpm” 100%[==========================================================================================>] 14,540 54.6K/s in 0.3s 2014-02-23 12:24:53 (54.6 KB/s) - “epel-release-6-8.noarch.rpm” saved [14540/14540]
Install epel repo package
Issue the following command:
rpm -ivh epel-release-6-8.noarch.rpm
outputs:
warning: epel-release-6-8.noarch.rpm: Header V3 RSA/SHA256 Signature, key ID 0608b895: NOKEY Preparing... ########################################### [100%] 1:epel-release ########################################### [100%]
centos install iftop tool
Type the following command to install iftop tool:
yum install iftop
outputs:
[root@devops Desktop]# yum install iftop Loaded plugins: fastestmirror, langpacks Loading mirror speeds from cached hostfile * base: mirrors.yun-idc.com * epel: mirrors.zju.edu.cn * extras: mirrors.skyshe.cn * updates: mirrors.zju.edu.cn Resolving Dependencies --> Running transaction check ---> Package iftop.x86_64 0:1.0-0.7.pre4.el7 will be installed --> Finished Dependency Resolution Dependencies Resolved ============================================================================================== Package Arch Version Repository Size ============================================================================================== Installing: iftop x86_64 1.0-0.7.pre4.el7 epel 51 k Transaction Summary ============================================================================================== Install 1 Package Total download size: 51 k Installed size: 93 k Is this ok [y/d/N]: y Downloading packages: warning: /var/cache/yum/x86_64/7/epel/packages/iftop-1.0-0.7.pre4.el7.x86_64.rpm: Header V3 RSA/SHA256 Signature, key ID 352c64e5: NOKEY Public key for iftop-1.0-0.7.pre4.el7.x86_64.rpm is not installed iftop-1.0-0.7.pre4.el7.x86_64.rpm | 51 kB 00:00:01 Retrieving key from file:///etc/pki/rpm-gpg/RPM-GPG-KEY-EPEL-7 Importing GPG key 0x352C64E5: Userid : "Fedora EPEL (7) <epel@fedoraproject.org>" Fingerprint: 91e9 7d7c 4a5e 96f1 7f3e 888f 6a2f aea2 352c 64e5 Package : epel-release-7-5.noarch (@extras) From : /etc/pki/rpm-gpg/RPM-GPG-KEY-EPEL-7 Is this ok [y/N]: y Running transaction check Running transaction test Transaction test succeeded Running transaction Installing : iftop-1.0-0.7.pre4.el7.x86_64 1/1 Verifying : iftop-1.0-0.7.pre4.el7.x86_64 1/1 Installed: iftop.x86_64 0:1.0-0.7.pre4.el7 Complete!
Using iftop tools to monitor network bandwidth for enp0s3 or eth0
Type the following command to display network bandwidth for eth0 interface on centos 7:
iftop -i eth0
Outputs:
[root@osetc~]# iftop -i eth0 interface: eth0 IP address is: 192.168.1.10 MAC address is: 00:00:01:8d:9c:8d qqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqq TX: cum: 187KB peak: 18.4Kb rates: 672b 1.27Kb 2.58Kb RX: 28.7KB 40.2Kb 160b 298b 2.48Kb TOTAL: 215KB 58.7Kb 832b 1.56Kb 5.06Kb
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