vnstat 查看服务器带宽统计命令

#先安装epel源
[root@vpn ~]# yum install epel-release -y

#yum安装vnstat
[root@vpn ~]# yum install vnstat -y

#创建监控数据库(eth0改成你需要监控的网卡）
vnstat -u -i eth0

#启动服务并设置开机启动
service vnstat start
chkconfig vnstat on


#查看帮助
[root@vpn ~]# vnstat --help
 vnStat 1.11 by Teemu Toivola <tst at iki dot fi>

         -q,  --query          query database
         -h,  --hours          show hours
         -d,  --days           show days
         -m,  --months         show months
         -w,  --weeks          show weeks
         -t,  --top10          show top10
         -s,  --short          use short output
         -u,  --update         update database
         -i,  --iface          select interface (default: eth0)
         -?,  --help           short help
         -v,  --version        show version
         -tr, --traffic        calculate traffic
         -ru, --rateunit       swap configured rate unit
         -l,  --live           show transfer rate in real time

See also "--longhelp" for complete options list and "man vnstat".


#流量查看命令
[root@vpn ~]# vnstat
Database updated: Wed Apr  5 22:37:51 2017

   eth0 since 04/05/17

          rx:  310 KiB      tx:  1.38 MiB      total:  1.68 MiB

   monthly
                     rx      |     tx      |    total    |   avg. rate
     ------------------------+-------------+-------------+---------------
       Apr ‘17       310 KiB |    1.38 MiB |    1.68 MiB |    0.03 kbit/s
     ------------------------+-------------+-------------+---------------
     estimated        --     |      --     |      --     |

   daily
                     rx      |     tx      |    total    |   avg. rate
     ------------------------+-------------+-------------+---------------
         today       310 KiB |    1.38 MiB |    1.68 MiB |    0.17 kbit/s
     ------------------------+-------------+-------------+---------------
     estimated        --     |      --     |      --     |