intel 服务器超频 安装stress-ng

yum源理解
yum源仓库的地址 在/etc/yum.repos.d/，并且只能读出第一层的repo文件，yum仓库的文件都是以.repo结尾的。
为加快yum下载，我们下载阿里云的.repo仓库文件 ，放到/etc/yum.repos.d/

下载前先备份原本的仓库文件
cd /etc/yum.repos.d/
mkdir allbak
mv ./* allbak

下载阿里云仓库文件
CentOS 7使用：
wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-7.repo
或者
curl -o /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-7.repo

清空原本yum缓存
yum clean all

生成新的阿里云的yum缓存，加速下载预热数据
yum makecache

测试

yum list                #显示软件源中所有可用的包

yum list|grep nfs   #查找软件源中某个包

其它。

一般内网服务器通过代理上网，内网服务器修改本地HOST解析，来实现代理上网使用阿里云的yum

内网服务器修改本地HOST解析

vi /etc/hosts 编辑HOST文件
192.18.111.1 mirrors.aliyun.com 添加阿里云yum域名解析

进行安装stress-ng

Enable snaps on CentOS and install stress-ng

Snaps are applications packaged with all their dependencies to run on all popular Linux distributions from a single build. They update automatically and roll back gracefully.

Snaps are discoverable and installable from the Snap Store, an app store with an audience of millions.

Enable snapd

Snap is available for CentOS 7.6+, and Red Hat Enterprise Linux 7.6+, from the Extra Packages for Enterprise Linux (EPEL) repository. The EPEL repository can be added to your system with the following command:

sudo yum install epel-release

Snap can now be installed as follows:

sudo yum install snapd

Once installed, the systemd unit that manages the main snap communication socket needs to be enabled:

sudo systemctl enable --now snapd.socket

To enable classic snap support, enter the following to create a symbolic link between /var/lib/snapd/snap and /snap:

sudo ln -s /var/lib/snapd/snap /snap

Either log out and back in again, or restart your system, to ensure snap’s paths are updated correctly.

Install stress-ng

To install stress-ng, simply use the following command:

sudo snap install stress-ng