[202012] Fix vs check install login timeout issue (#11727) #12011
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Why I did it
Cherry-pick from #11727 and fix conflict.
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.
A picture of a cute animal (not mandatory but encouraged)