Comment 3 for bug 1973114

I also tested with mssh to make it works well:

When running ec2-instance-connect 1.1.14-0ubuntu1 (from Jammy) and trying to connect with mssh:

fabio@fabio-canonical:~/.aws$ mssh ubuntu@i-<ami_id>
ubuntu@<ip>: Permission denied (publickey).

Due to the bug, we can see the key being pushed, but then the client denying the connection:

https://pastebin.ubuntu.com/p/7StqsfQdJp/

Back in the instance, I've changed the sources.list to point to kinetic repos and upgraded ec2-instance-connect to kinetic's version:

ubuntu@ip-10-0-1-226:~$ sudo apt-cache policy ec2-instance-connect
ec2-instance-connect:
  Installed: 1.1.14-0ubuntu2
  Candidate: 1.1.14-0ubuntu2
  Version table:
 *** 1.1.14-0ubuntu2 500
        500 http://us-east-1.ec2.archive.ubuntu.com/ubuntu kinetic/main amd64 Packages
        100 /var/lib/dpkg/status

And now mssh works fine:

fabio@fabio-canonical:~/.aws$ mssh ubuntu@i-<ami_id>
Welcome to Ubuntu 22.04 LTS (GNU/Linux 5.15.0-1004-aws x86_64)

 * Documentation: https://help.ubuntu.com
 * Management: https://landscape.canonical.com
 * Support: https://ubuntu.com/advantage

  System information as of Fri May 13 14:16:20 UTC 2022

  System load: 0.2421875 Processes: 128
  Usage of /: 21.1% of 7.58GB Users logged in: 1
  Memory usage: 1% IPv4 address for eth0: 10.0.1.226
  Swap usage: 0%

74 updates can be applied immediately.
To see these additional updates run: apt list --upgradable

Last login: Fri May 13 13:47:05 2022 from <ip>
ubuntu@ip-10-0-1-226:~$