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Why I did it Fix a build not stable issue: #11620 The vs vm has started successfully, but failed to wait for the message "sonic login:". There were 55 builds failed caused by the issue in the last 30 days. AzurePipelineBuildLogs | where startTime > ago(30d) | where type =~ "task" | where result =~ "failed" | where name =~ "Build sonic image" | where content contains "Timeout exceeded" | where content contains "re.compile('sonic login:')" | project-away content | extend branchName=case(reason=~"pullRequest", tostring(todynamic(parameters)['system.pullRequest.targetBranch']), replace("refs/heads/", "", sourceBranch)) | summarize FailedCount=dcount(buildId) by branchName branchName FailedCount master 37 202012 9 202106 4 202111 2 202205 1 201911 1 It is caused by the login message mixed with the output message of the /etc/rc.local, one of the examples as below: (see the message rc.local[307]: sonic+ onie_disco_subnet=255.255.255.0 login: ) The check_install.py was waiting for the message "sonic login:", and Linux console was waiting for the username input (the login message has already printed in the console). https://dev.azure.com/mssonic/build/_build/results?buildId=123294&view=logs&j=cef3d8a9-152e-5193-620b-567dc18af272&t=359769c4-8b5e-5976-a793-85da132e0a6f 2022-07-17T15:00:58.9198877Z [ 25.493855] rc.local[307]: + onie_disco_opt53=05 2022-07-17T15:00:58.9199330Z [ 25.595054] rc.local[307]: + onie_disco_router=10.0.2.2 2022-07-17T15:00:58.9199781Z [ 25.699409] rc.local[307]: + onie_disco_serverid=10.0.2.2 2022-07-17T15:00:58.9200252Z [ 25.789891] rc.local[307]: + onie_disco_siaddr=10.0.2.2 2022-07-17T15:00:58.9200622Z [ 25.880920] 2022-07-17T15:00:58.9200745Z 2022-07-17T15:00:58.9201019Z Debian GNU/Linux 10 sonic ttyS0 2022-07-17T15:00:58.9201201Z 2022-07-17T15:00:58.9201542Z rc.local[307]: sonic+ onie_disco_subnet=255.255.255.0 login: 2022-07-17T15:00:58.9202309Z [ 26.079767] rc.local[307]: + onie_exec_url=file://dev/vdb/onie-installer.bin How I did it Input a newline when finished to run the script /etc/rc.local. If entering a newline, the message "sonic login:" will prompt again.
70 lines
1.8 KiB
Python
Executable File
70 lines
1.8 KiB
Python
Executable File
#!/usr/bin/env python3
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import argparse
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import pexpect
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import sys
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import time
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def main():
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parser = argparse.ArgumentParser(description='test_login cmdline parser')
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parser.add_argument('-u', default="admin", help='login user name')
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parser.add_argument('-P', default="YourPaSsWoRd", help='login password')
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parser.add_argument('-p', type=int, default=9000, help='local port')
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args = parser.parse_args()
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login_prompt = 'sonic login:'
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passwd_prompt = 'Password:'
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cmd_prompt = "{}@sonic:~\$ $".format(args.u)
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grub_selection = "The highlighted entry will be executed"
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firsttime_prompt = 'firsttime_exit'
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i = 0
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while True:
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try:
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p = pexpect.spawn("telnet 127.0.0.1 {}".format(args.p), timeout=600, logfile=sys.stdout, encoding='utf-8')
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break
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except Exception as e:
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print(str(e))
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i += 1
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if i == 10:
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raise
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time.sleep(1)
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# select default SONiC Image
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p.expect(grub_selection)
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p.sendline()
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# bootup sonic image
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while True:
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i = p.expect([login_prompt, passwd_prompt, firsttime_prompt, cmd_prompt])
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if i == 0:
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# send user name
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p.sendline(args.u)
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elif i == 1:
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# send password
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p.sendline(args.P)
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elif i == 2:
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# fix a login timeout issue, caused by the login_prompt message mixed with the output message of the rc.local
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time.sleep(1)
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p.sendline()
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else:
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break
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# check version
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time.sleep(5)
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p.sendline('uptime')
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p.expect([cmd_prompt])
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p.sendline('show version')
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p.expect([cmd_prompt])
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p.sendline('show ip bgp sum')
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p.expect([cmd_prompt])
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p.sendline('sync')
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p.expect([cmd_prompt])
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if __name__ == '__main__':
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main()
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