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Istio 1.21 breaking ExternalName #787

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barchw opened this issue May 2, 2024 · 0 comments
Closed

Istio 1.21 breaking ExternalName #787

barchw opened this issue May 2, 2024 · 0 comments
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@kolodziejczak @barchw
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area/service-mesh Issues or PRs related to service-mesh kind/bug Categorizes issue or PR as related to a bug.
Milestone
1.5

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@barchw
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barchw commented May 2, 2024 •
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Description
Istio 1.21 update introduced a breaking change which cause ExternalName to be resolved differently than prior to 1.21. This is causing issues when routing according to e.g. ServiceEntry.

Affected: Istio module version >=1.5.0

Expected result

The traffic is routed correctly.

Troubleshooting

The issue is caused by an introduced breaking change in upstream Istio. The behaviour can be switched to use the previous <1.21 by using ENABLE_EXTERNAL_NAME_ALIAS=false pilot variable.

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@kolodziejczak kolodziejczak

@barchw barchw

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area/service-mesh Issues or PRs related to service-mesh kind/bug Categorizes issue or PR as related to a bug.
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Milestone
1.5
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@strekm @kolodziejczak @barchw