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# a1 节点执行
# a1 节点的ip是 192.168.31.15
firewall-cmd --add-port=5201/tcp
iperf3 -s
# 从 a2 节点发起压测
iperf3 -c 192.168.31.15 -n 100G -b 30G
# > Connecting to host 192.168.31.15, port 5201
# > [  4] local 10.14.0.4 port 39974 connected to 192.168.31.15 port 5201
# > [ ID] Interval           Transfer     Bandwidth       Retr  Cwnd
# > [  4]   0.00-1.00   sec  1.69 GBytes  19.5 Gbits/sec  191   2.01 MBytes
# > [  4]   1.00-2.00   sec  1.95 GBytes  19.7 Gbits/sec    0   2.01 MBytes
# > ...
# > ...
# > [  4]  46.00-47.00  sec  2.27 GBytes  19.5 Gbits/sec    0   2.90 MBytes
# > [  4]  47.00-48.00  sec  2.26 GBytes  19.4 Gbits/sec    0   2.90 MBytes
# > [  4]  48.00-48.15  sec   344 MBytes  19.4 Gbits/sec    0   2.90 MBytes
# > - - - - - - - - - - - - - - - - - - - - - - - - -
# > [ ID] Interval           Transfer     Bandwidth       Retr
# > [  4]   0.00-48.15  sec   100 GBytes  19.5 Gbits/sec  451             sender
# > [  4]   0.00-48.15  sec   100 GBytes  19.5 Gbits/sec                  receiver
# > iperf Done.