Linux 查看服务器带宽及用量的方法
一、使用speedtest-cli命令查看下载和上传最大流量值
因为命令是 python 的，所以，需要先下载一个 python，用 pip 下载；
$ yum -y install python-pip
$ pip install speedtest-cli
$ speedtest-cli
Retrieving speedtest.net configuration...
Testing from China Unicom (125.119.20.3)...
Retrieving speedtest.net server list...
Selecting best server based on ping...
Hosted by China Telecom TianJin-5G (TianJin) [123.83 km]: 47.213 ms
Testing download speed................................................................................
Download: 16.36 Mbit/s
Testing upload speed................................................................................................
Upload: 18.58 Mbit/s
二、查看网卡、网络的详情
1.查看服务器网络端口
ifconfig
2.ethtool命令查看宽带大小
ethtool 网卡名称
$ ethtool eno1
Settings for eno1:
Supported ports: [ TP ]
Supported link modes: 10baseT/Half 10baseT/Full
100baseT/Half 100baseT/Full
1000baseT/Full
Supported pause frame use: No
Supports auto-negotiation: Yes
Supported FEC modes: Not reported
Advertised link modes: 10baseT/Half 10baseT/Full
100baseT/Half 100baseT/Full
1000baseT/Full
Advertised pause frame use: No
Advertised auto-negotiation: Yes
Advertised FEC modes: Not reported
Speed: 100Mb/s
Duplex: Full
Port: Twisted Pair
PHYAD: 1
Transceiver: internal
Auto-negotiation: on
MDI-X: off (auto)
Supports Wake-on: pumbg
Wake-on: g
Current message level: 0x00000007 (7)
drv probe link
Link detected: yes
Speed: 100Mb/s 网卡带宽为百兆
三、nload命令实时统计网卡带宽使用率
没有nload命令的需要下载；
$ yum -y install nload
#直接使用命令查看
$ nload
#指定网卡进入
$ nload eno1
Incoming是进入网卡的流量，Outgoing是从这块网卡出去的流量，每一部分都有下面几个。
- Curr：当前流量
- Avg：平均流量
- Min：最小流量
- Max：最大流量
- Ttl：总流量
四、dstat -n命令实时监测网络的状态
$ dstat -n