通过yum安装iftop

通过yum安装iftop

iftop是干嘛的？ iftop是流量监控工具，可以实时的监控网卡的进出流量。

直接用命令安装：

yum install -y iftop

如果安装的时候报下面这种错：

Loaded plugins: fastestmirror
Loading mirror speeds from cached hostfile
 * base: mirrors.nju.edu.cn
 * extras: mirrors.nju.edu.cn
 * updates: mirrors.nju.edu.cn
No package iftop available.
Error: Nothing to do

就需要改一下yum源：

vi /etc/yum.repos.d/epel.repo

把下面这段替换之前的贴进去

[epel]
name=Extra Packages for Enterprise Linux 7 - $basearch
#baseurl=http://download.fedoraproject.org/pub/epel/7/$basearch
metalink=https://mirrors.fedoraproject.org/metalink?repo=epel-7&arch=$basearch
failovermethod=priority
enabled=1
gpgcheck=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-EPEL-7

[epel-debuginfo]
name=Extra Packages for Enterprise Linux 7 - $basearch - Debug
#baseurl=http://download.fedoraproject.org/pub/epel/7/$basearch/debug
metalink=https://mirrors.fedoraproject.org/metalink?repo=epel-debug-7&arch=$basearch
failovermethod=priority
enabled=0
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-EPEL-7
gpgcheck=1

[epel-source]
name=Extra Packages for Enterprise Linux 7 - $basearch - Source
#baseurl=http://download.fedoraproject.org/pub/epel/7/SRPMS
metalink=https://mirrors.fedoraproject.org/metalink?repo=epel-source-7&arch=$basearch
failovermethod=priority
enabled=0
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-EPEL-7
gpgcheck=1

然后执行：

cd /etc/pki/rpm-gpg
wget https://archive.fedoraproject.org/pub/epel/RPM-GPG-KEY-EPEL-7

最后再次执行

yum install -y iftop

iftop安装完成。

debian安装iftop

apt-get install iftop -y