网络测速

speedtest

下载通过直接下载SpeedTest脚本，给权限运行脚本即可

[root@localhost ~]# curl -o speedtest-cli https://raw.githubusercontent.com/sivel/speedtest-cli/master/speedtest.py

[root@localhost ~]# chmod +x speedtest-cli

[root@localhost ~]# ./speedtest-cli --share

Retrieving speedtest.net configuration...

Testing from Itace International Limited (103.41.124.83)...

Retrieving speedtest.net server list...

Selecting best server based on ping...

Hosted by i3D.net (Hong Kong) [0.00 km]: 8.013 ms

Testing download speed................................................................................

Download: 4.37 Mbit/s

Testing upload speed................................................................................................

Upload: 10.73 Mbit/s

Share results: http://www.speedtest.net/result/9551161855.png

[root@localhost ~]#

查看所有国内测试节点，并指定测试节点进行测试

[root@localhost ~]# ./speedtest-cli --list | grep China

1536) STC (Hong Kong, China) [0.00 km]

2993) Website Solution Limited (Hong Kong, China) [0.00 km]

32155) China Mobile Hong Kong (Hong Kong, Hong Kong) [0.00 km]

19036) SmarTone (Hong Kong, China) [0.00 km]

16192) ShenZhen Unicom (ShenZhen, China) [31.69 km]

4515) China Mobile,Guangdong (Shenzhen, China) [31.69 km]

32468) GMCC (ZHUHAI, China) [60.76 km]

26678) Guangzhou Unicom 5G (Guangzhou, China) [134.80 km]

6611) China Mobile,Guangdong (Guangzhou, China) [134.80 km]

27594) ChinaTelecom 5G (Guangzhou, China) [134.80 km]

15863) GX ChinaMobile (Nanning, China) [604.08 km]

5674) GX-Unicom (Nanning, China) [604.08 km]

27810) GX-Telecom (Nanning, China) [604.08 km]

26677) Changsha, Hunan Unicom (Zhuzhou, China) [628.90 km]

28491) China Mobile HuNan 5G (ChangSha, China) [669.76 km]

4870) Changsha, Hunan Unicom,Server1 (Changsha, China) [671.99 km]

28225) Hunan Telecom 5G (Changsha, China) [671.99 km]

......

[root@localhost ~]# ./speedtest-cli --server=6611 --share

Retrieving speedtest.net configuration...

Testing from Itace International Limited (103.41.124.83)...

Retrieving speedtest.net server list...

Retrieving information for the selected server...

Hosted by China Mobile,Guangdong (Guangzhou) [134.80 km]: 688.751 ms

Testing download speed................................................................................

Download: 4.02 Mbit/s

Testing upload speed................................................................................................

Upload: 5.32 Mbit/s

Share results: http://www.speedtest.net/result/9551180382.png

[root@localhost ~]#

iperf

服务端与客户端 都要安装iperf工具

yum install -y iperf

[root@localhost ~]# wget -O /usr/lib/libiperf.so.0 https://iperf.fr/download/ubuntu/libiperf.so.0_3.1.3

[root@localhost ~]# wget -O /usr/bin/iperf3 https://iperf.fr/download/ubuntu/iperf3_3.1.3

[root@localhost ~]# chmod +x /usr/bin/iperf3

注：在CentOS 7下安装iperf3时可能会出现如下错误

iperf3: error while loading shared libraries: libiperf.so.0: cannot open shared object file: No such file or directory

一般情况下是因为wget了iperf3的动态链接库，而共享库未能及时更新，需要手动执行 ldconfig 命令以创建连接和缓存文件。

[root@localhost ~]# ldconfig

查看版本

[root@localhost ~]# iperf3 -v

iperf 3.1.3

Linux localhost.localdomain 3.10.0-693.el7.x86_64 #1 SMP Tue Aug 22 21:09:27 UTC 2017 x86_64

Optional features available: CPU affinity setting, IPv6 flow label, TCP congestion algorithm setting, sendfile / zerocopy, socket pacing

服务端启动服务，作为server：

iperf3 -s

客户端启动服务，作为client：

iperf3 -c -d -t 60

搭建网站-->网站根目录dd if 建立大文件index.html-->远程download测速wget/curl

清除用户登录成功记录：

[root@localhost root]# echo > /var/log/wtmp //此文件默认打开时乱码，可查到ip等信息

[root@localhost root]# last //此时即查不到用户登录信息

清除登陆系统失败的记录

[root@localhost root]# echo > /var/log/btmp //此文件默认打开时乱码，可查到登陆失败信息

[root@localhost root]# lastb //查不到登陆失败信息

清除历史记录:history -c