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[autoscaler][aws] Use subnets in only one VPC #14868

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merged 8 commits into from
Mar 24, 2021
Merged

[autoscaler][aws] Use subnets in only one VPC #14868

merged 8 commits into from
Mar 24, 2021

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DmitriGekhtman
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@DmitriGekhtman DmitriGekhtman commented Mar 23, 2021 •
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Why are these changes needed?

The default behavior of _configure_subnets in aws/config.py is to fetch all available subnets across all available VPCs
and place these subnets into the SubnetIDs field of the head and worker nodes.
However, _configure_security group generates only a security group in the VPC of one of the subnets.
AWSNodeProvider.create_node then might attempt to launch into a subnet outside of the VPC of the security group, leading to the error observed here #5053 (comment)

This PR fixes the bug by filtering subnets so that we only use subnets belonging to one VPC.

Related issue number

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  • I've run scripts/format.sh to lint the changes in this PR.
  • I've included any doc changes needed for https://docs.ray.io/en/master/.
  • I've made sure the tests are passing. Note that there might be a few flaky tests, see the recent failures at https://flakey-tests.ray.io/
  • Testing Strategy
    • Unit tests
    • Release tests
    • This PR is not tested :(

@DmitriGekhtman
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Pushing for initial comment.

Working on a unit test for this.

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added test to test_autoscaler_aws.py
test_autoscaler_aws.py passes for me locally

@DmitriGekhtman DmitriGekhtman added the release-blocker P0 Issue that blocks the release label Mar 23, 2021
pcmoritz
pcmoritz approved these changes Mar 23, 2021
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Thanks for the fix, this is great :)

@DmitriGekhtman DmitriGekhtman added the tests-ok The tagger certifies test failures are unrelated and assumes personal liability. label Mar 24, 2021
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tests look fine
@pcmoritz could you merge this?

@AmeerHajAli AmeerHajAli added the P0 Issues that should be fixed in short order label Mar 24, 2021
@pcmoritz pcmoritz merged commit 1045856 into ray-project:master Mar 24, 2021
amogkam pushed a commit that referenced this pull request Mar 24, 2021
@DmitriGekhtman @amogkam
[autoscaler][aws] Use subnets in only one VPC (#14868)
cd86578
@allenyin55 allenyin55 mentioned this pull request May 3, 2021
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@xcharleslin xcharleslin xcharleslin left review comments

@allenyin55 allenyin55 allenyin55 left review comments

@pcmoritz pcmoritz pcmoritz approved these changes

@thomasdesr thomasdesr Awaiting requested review from thomasdesr

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@pcmoritz pcmoritz

@thomasdesr thomasdesr

@xcharleslin xcharleslin

@allenyin55 allenyin55

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