Can't connect to Lightsail SSH UPSTREAM ERROR 519

Hi, I'm a newbie and accident do the wrong permission in SSH, I use this command to give a permission to user (default user in Lightsail instances)

"sudo chown <your username>:<your usergroup> -R <path to>"

But at the "<path to>" I just put only slash "/". After that I get an error "command not permit" and can't access ssh via browser or putty at all.

I try to restart instances, create new instances from snapshot and put a shell script, so it not success. Any advice or help, please.

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Amazon Lightsail

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gefragt vor 2 Jahren2701 Aufrufe

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Hi!

519 is UPSTREAM_NOT_FOUND [519]

There are many possibilities why you see this error, so I suggest to check out this piece of documentation: https://aws.amazon.com/premiumsupport/knowledge-center/lightsail-resolve-ssh-console-errors/

After you check the article above and you do not find the solution please include more delails regarding the problem areas mentioned in the docs so that I will check out further options.

Also if you have tried some solutions in different articles, please include some info about steps taken, so that I do not point you to the direction you have already taken :)

Piotr Blonkowski

beantwortet vor 2 Jahren

Yo
vor 2 Jahren
I'm trying to follow this article but it not success. I search for solution a lot, but I'm not familiar with Linux so it's hard for me to reset root file/folder permission again.

But thank you so much for help.
Piotr Blonkowski
vor 2 Jahren
Hi!

We've all been at the beginning where you are right now, so there is nothing to worry about :)

I do not want to leave you hanging with this issue though.

I did not found any solution for resetting the default lightsail user permissions while remaining on Lightsail, but if you have some data in this instance you need to backup, you can try moving it to EC2 and troubleshoot there. Articles that might help you with that:

Export Lightsail instance to EC2: https://aws.amazon.com/premiumsupport/knowledge-center/lightsail-export-linux-instance-ec2/

Troubleshoot EC2 SSH access: https://aws.amazon.com/premiumsupport/knowledge-center/ec2-linux-ssh-troubleshooting/

If I am not mistaken, you can try to connect to the EC2 instance using serial console and then try to revert the changes that prevent you from connecting using SSH: https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/connect-to-serial-console.html

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