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salt/utils/cloud: Allow to customize ssh gateway command/options #48062

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icy
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@icy icy commented Jun 12, 2018

What does this PR do?

By default, nc command (nc -q0 %h %p) is used to create gateway. This is not
always possible in some restricted environments. An alternative is to use
native support from ssh: -W %h:%p.

This commit allows user to provide a customize option for gateway. Please note
the (wait_for_port) process may need another patch.

What issues does this PR fix or reference?

Previous Behavior

Users are forced to use nc -q0 %h %p command to create ssh proxy for salt-cloud

New Behavior

Users can use a customized command to create ssh proxy for salt-cloud

Tests written?

NO

Commits signed with GPG?

Yes

By default, nc command (nc -q0 %h %p) is used to create gateway. This is not
always possible in some restricted environments. An alternative is to use
native support from ssh: -W %h:%p.

This commit allows user to provide a customize option for gateway. Please note
the (wait_for_port) process may need another patch.
@ghost ghost self-requested a review June 12, 2018 06:18
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@gtmanfred gtmanfred left a comment

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This should be documented in salt/cloud/clouds/ec2.py, as well as adding the gateway stuff to ./doc/topics/cloud/misc.rst

doc/man/salt.7 Outdated
# Default to nc -q0 %h %p
# Optional
ssh_gateway_command: "-W %h:%p"

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Can you remove this change, we compile these every time we build, so this will not remain.

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thanks a lot. I will update ec2.py and misc.rst instead :)

@icy
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icy commented Jun 13, 2018

Thanks @gtmanfred and @cachedout for your reviews and approvals.

@rallytime
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Thanks @icy and congrats on your first salt PR. :)

@rallytime rallytime merged commit bf1b2e7 into saltstack:develop Jun 15, 2018
rallytime pushed a commit that referenced this pull request Jun 19, 2018
Minor improvements and fixes for related PR: #48062
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icy commented Aug 6, 2018

Hi @rallytime and @gtmanfred,

Is there any good start to write and improve unit tests (e.g., in my PRs)?

At my laptop, the tests are passed as seen here https://gist.github.com/icy/a59f975ba54224b7d941b2e38ccc74a1 , I don't think these tests are working fine. I did some smoke tests actually and it's not a recommended way (expensive?)

icy added a commit to icyfork/salt that referenced this pull request Aug 6, 2018
Some variables are not in their right scope; that makes salt crashed
when user settings do not include some gateway settings.

Cf: saltstack#48062
rallytime pushed a commit to rallytime/salt that referenced this pull request Aug 23, 2018
Some variables are not in their right scope; that makes salt crashed
when user settings do not include some gateway settings.

Cf: saltstack#48062
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5 participants