[Bug 1835114] Re: [MIR] ec2-instance-connect

[Ryan Harper]

@Balint,

Apologies for not responding sooner.

Perf-wise, the delta between with and without worst-case values from your
results:

(0.959 - 0.624) = .335s

is a non-trivial amount (almost 50% more) overhead for a single
connection.


Users (or programs) may run concurrent ssh sessions, which I don't see
tested here (you said this was out of scope, I disagree).

We've also not tested induced failure (you can run an iptable rule to map
the IMDS address to be dropped to simulate failure to talk to IMDS) so we
don't know what happens in the case that ec2-instance-connect cannot reach
the end-point.  I think we should understand the behavior in best and worst
case scenarios before we enable this.

Given that in the images this will be opt-in (disabled by default), I won't
block this request any longer.

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https://bugs.launchpad.net/bugs/1835114

Title:
  [MIR] ec2-instance-connect

Status in ec2-instance-connect package in Ubuntu:
  Incomplete

Bug description:
  [Availability]
  ec2-instance-connect is in the Ubuntu archive, and available for all supported releases. It is available on all architectures despite only being useful on Amazon EC2 instances.

  [Rationale]
  This package is useful on Amazon EC2 instances to make use of a new feature:
  Instance Connect; which allows storing SSH keys for access online in the Amazon systems. These SSH keys are then retrieved to be used by the system's SSH service, collated with pre-existing keys as deployed on the system.

  Installing the package enables the use of Instance Connect on an
  instance.

  [Security]
  This is a new package, and as such has no security history to speak of.

  [Quality Assurance]
  The package consists in a few shell scripts that are difficult to test by
  themselves due to the high reliance on Amazon's Instance Connect service;
  which is online and limited to use on Amazon instances.

  Given that it's a new package, there are no long-term outstanding bugs in
  Ubuntu or Debian. The package is only maintained in Ubuntu at the moment.

  This package deals with special "hardware"; it is only useful on Amazon
  instances, and its support is required as a default deployment on such
  instances when deployed with Ubuntu.

  [UI Standards]
  Not applicable. This service is command-line only and has no configuration options.

  [Dependencies]
  There are no special dependencies to speak of.

  [Standards Compliance]
  This package has been thoroughly reviewed by a few Canonical engineers, there are no standards violations known.

  [Maintenance]
  This package is to be owned by the Ubuntu Foundations team.

  [Background Information]
  This is Amazon-specific, as previously mentioned.

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