转：iftop yum install

 https://blog.csdn.net/fangfu123/article/details/105508806

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：

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

把下面这段粘进去

[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。