Feature #20520: [arvados-dispatch-cloud] configurable instance initialization script - Arvados

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Feature #20520

closed

[arvados-dispatch-cloud] configurable instance initialization script

Added by Tom Clegg 14 days ago. Updated 2 days ago.

Status:

Resolved

Priority:

Normal

Assigned To:

Tom Clegg

Category:

Crunch

Target version:

Development 2023-06-07

Start date:

05/25/2023

Due date:

% Done:

100%

Estimated time:

(Total: 0.00 h)

Story points:

Release:

Arvados 2.6.3

Release relationship:

Auto

Description

Currently a-d-c sends a bash script to new cloud instances (as "CustomData" on Azure, "UserData" on EC2) in order to stash a secret string on the instance, which is checked upon first SSH connection as an alternative to verifying the instance's SSH host key fingerprint.

This proposed feature would allow the operator to use the CustomData/UserData feature for additional instance setup tasks.

  CloudVMs:
    InstanceInitCommand: "echo ok\nexit 0\n"

This command/script, if configured, would be appended to Arvados's existing builtin bash script.

Subtasks 1 (0 open — 1 closed)

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Updated by Tom Clegg 9 days ago

Target version changed from To be groomed to Development 2023-05-24 sprint
Assigned To set to Tom Clegg
Status changed from New to In Progress

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Updated by Tom Clegg 8 days ago

Target version changed from Development 2023-05-24 sprint to Development 2023-06-07

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Updated by Tom Clegg 7 days ago

20520-instance-init-command @ 45b46550ecadf69a09390b4cefe3f16d5c1c7453 -- developer-run-tests: #3659

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Updated by Brett Smith 7 days ago

Release set to 64

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Updated by Tom Clegg 7 days ago

20520-instance-init-command @ aec8a66deeff226db672351cd3ab803bf01a186d -- developer-run-tests: #3664

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Updated by Brett Smith 6 days ago

Tom Clegg wrote in #note-5:

20520-instance-init-command @ aec8a66deeff226db672351cd3ab803bf01a186d -- developer-run-tests: #3664

Everything here is great. Is there anywhere that makes sense to document this option and why you might use it? Maybe the "Install the cloud dispatcher" docs?

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Updated by Tom Clegg 6 days ago

I haven't figured out where to mention this in the docs, beyond the existing catch-all "see entire config defaults file for more options". But while looking, I found and fixed

an unreleased mutex in the EC2 driver (Why do the docs say to install the dispatcher public key on the compute image, even though we also that automatically in both drivers? Still not sure, but here's a thing to fix...)
a broken link on the "compute image" page

20520-instance-init-command @ 8b1f870373af47287e916bb0ec16a3bdf09b62cb -- developer-run-tests: #3669

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