Debian Question posted in
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My SSH session into my VM Cloud is suddenly lagging – Debian

Everyday I log into my SSH session of a Google Cloud VM I maintain (Debian).
Since a week ago, I noticed my performance was lagging as I typed into the VM or when doing something else. I mostly login into this VM to check log files of scheduled scripts I have, and even when I use "cat script.log", what used to take less than 2 seconds now takes at least 5 or 7 seconds, loading the log text.

Pinging different websites bring me an reasonable 10 – 15 ms. I’m pretty sure it’s not about my local connection either, everything else I do works fine in my local computer.

A warning started to appear now into my session, saying

"Please consider adding the IAP-secured Tunnel User IAM role to start using Cloud IAP for TCP forwarding for better performance.  Learn more Dismiss"

I’ve already configured the IAP secured tunnel to my account, which is the owner account of GCP project.

Another coworker of mine is being able to access the VM without any performance issues whatsoever.

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2

Answers


  1. 0

    Your issue is in my opinion with the ISP. For some reason the SSH sessions are lagging.

    That’s why even other computers using your home ISP lag SSH sessions too. If that was firewall rule interfering you wouldn’t be able to connect at all.

    You may try to reset all the network hardware in your home and if that doesn’t help
    run tracert command in windows shell and then contact your ISP and pass your findings. It’s possible it’s something on their end (and if not maybe their’s ISP etc).

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  2. 0

    To solve the problem you need to add "IAP-secured Tunnel User" at the project level in IAM for that user.IAP-secured Tunnel User + See instructions here in a blog I wrote about this. That should solve your problem.

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