istio.io/istio@v0.0.0-20240520182934-d79c90f27776/releasenotes/notes/29427.yaml (about)

     1  apiVersion: release-notes/v2
     2  kind: bug-fix
     3  area: networking
     4  issue:
     5    - 29427
     6    - 28516
     7  upgradeNotes:
     8    - title: Connectivity issues among your proxies when updating from 1.7.x to 1.7.5 or newer.
     9      content: |
    10        When upgrading your Istio data plane from 1.7.x (where x < 5) to 1.7.5 or newer, you may 
    11        observe connectivity issues between your gateway and your sidecars or among your sidecars 
    12        with 503 errors in the log. This happens when 1.7.5+ proxies send HTTP 1xx or 204 response 
    13        codes with headers that 1.7.x proxies reject. To fix this, upgrade all your 
    14        proxies (gateways and sidecars) to 1.7.5+ as soon as possible.