network: generate network traffic by using iperf

[WangXiangUSTC]

Signed-off-by: xiang xiang13225080@163.com

./bin/chaosd attack network flood -h
generate a mount of network traffic by using iperf

Usage:
  chaosd attack network flood [flags]

Flags:
      --duration string   number of seconds to run the iperf test (default "99999999")
  -h, --help              help for flood
  -i, --ip string         generate traffic to this IP address
      --parallel int32    number of iperf parallel client threads to run (default 1)
  -p, --port string       generate traffic to this port on the IP address
  -r, --rate string       the speed of network traffic, allows bps, kbps, mbps, gbps, tbps unit. bps means bytes per second

Global Flags:
      --log-level string   the log level of chaosd. The value can be 'debug', 'info', 'warn' and 'error'
      --uid string         the experiment ID

[ti-chi-bot]

[REVIEW NOTIFICATION]

This pull request has been approved by:

• Andrewmatilde
• cwen0

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[cwen0]

@WangXiangUSTC iperf tool wound not be installed on centos by default. Maybe we should add it to tools directory.

[cwen0]

2022-06-17T15:17:12.389+0800    INFO    background-process-manager  build command   {"command": "bash -c iperf -u -c  -t 99999999 -p 2333 -P 1 -b 1gkb"}
[2022/06/17 15:17:12.391 +08:00] [INFO] [network.go:349] ["Start iperf process successfully"] [command="/bin/bash -c iperf -u -c  -t 99999999 -p 2333 -P 1 -b 1gkb"] [Pid=12500]
2022-06-17T15:17:12.392+0800    INFO    background-process-manager  process stopped {"pid": 12500}
Attack network successfully, uid: 26d7e208-5ae8-4eba-825d-345e18a9067b

This attack failed, but I can't find the error message from this log.

[cwen0]

@WangXiangUSTC PTAL

[WangXiangUSTC]

2022-06-17T15:17:12.389+0800  INFO    background-process-manager  build command   {"command": "bash -c iperf -u -c  -t 99999999 -p 2333 -P 1 -b 1gkb"}
[2022/06/17 15:17:12.391 +08:00] [INFO] [network.go:349] ["Start iperf process successfully"] [command="/bin/bash -c iperf -u -c  -t 99999999 -p 2333 -P 1 -b 1gkb"] [Pid=12500]
2022-06-17T15:17:12.392+0800  INFO    background-process-manager  process stopped {"pid": 12500}
Attack network successfully, uid: 26d7e208-5ae8-4eba-825d-345e18a9067b

This attack failed, but I can't find the error message from this log.

Yeah, I forget to validate the ip-address, fixed in the last commit

[WangXiangUSTC]

@WangXiangUSTC iperf tool wound not be installed on centos by default. Maybe we should add it to tools directory.

I will add some description of install iperf in the document first, and maybe add this tool into tools directory in another pr.

[Andrewmatilde]

I find sometimes iperf cannot shutdown but force kill.

[cwen0]

I find sometimes iperf cannot shutdown but force kill.

@WangXiangUSTC PTAL

[Andrewmatilde]

This may be a Debian only problem.

[WangXiangUSTC]

I find sometimes iperf cannot shutdown but force kill.

@WangXiangUSTC PTAL

I have already check it with @Andrewmatilde, it's a bug of iperf on some specified Linux distributed version. @cwen0

[WangXiangUSTC]

/merge

[ti-chi-bot]

This pull request has been accepted and is ready to merge.

Commit hash: 31f39dbd8ccf93a72b44e29510e81f171a8587c6