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  1. OpenShift Bugs
  2. OCPBUGS-27255

[4.15] SessionAffinity does not work after scaling down the Pods

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    Description

      Description of problem:

      Version-Release number of selected component (if applicable):

       4.14

      How reproducible:

      1. oc patch svc <svc> --type merge --patch '{"spec":{"sessionAffinity":"ClientIP"}}'

      2. curl <svc>:<port>

      3. oc scale --replicas=3 deploy/<deploy>

      4. oc scale --replicas=0 deploy/<deploy>

      5. oc scale --replicas=3 deploy/<deploy>

      Actual results:

       Hostname: tcp-668655b888-dcwlr, SourceIP: 10.128.1.205, SourcePort: 54850
      Hostname: tcp-668655b888-dcwlr, SourceIP: 10.128.1.205, SourcePort: 46668
      Hostname: tcp-668655b888-xxcn2, SourceIP: 10.128.1.205, SourcePort: 46682
      Hostname: tcp-668655b888-dcwlr, SourceIP: 10.128.1.205, SourcePort: 60144
      Hostname: tcp-668655b888-dcwlr, SourceIP: 10.128.1.205, SourcePort: 60150
      Hostname: tcp-668655b888-xxcn2, SourceIP: 10.128.1.205, SourcePort: 60160
      Hostname: tcp-668655b888-xxcn2, SourceIP: 10.128.1.205, SourcePort: 51720

      Expected results:

       Hostname: tcp-668655b888-9mmfc, SourceIP: 10.128.1.205, SourcePort: 46914
      Hostname: tcp-668655b888-9mmfc, SourceIP: 10.128.1.205, SourcePort: 46928
      Hostname: tcp-668655b888-9mmfc, SourceIP: 10.128.1.205, SourcePort: 46944
      Hostname: tcp-668655b888-9mmfc, SourceIP: 10.128.1.205, SourcePort: 40510
      Hostname: tcp-668655b888-9mmfc, SourceIP: 10.128.1.205, SourcePort: 40520

      Additional info:

      See the hostname in the server log output for each command.

      $ oc patch svc <svc> --type merge --patch '{"spec":{"sessionAffinity":"ClientIP"}}'

      Hostname: tcp-668655b888-9mmfc, SourceIP: 10.128.1.205, SourcePort: 46914
      Hostname: tcp-668655b888-9mmfc, SourceIP: 10.128.1.205, SourcePort: 46928
      Hostname: tcp-668655b888-9mmfc, SourceIP: 10.128.1.205, SourcePort: 46944
      Hostname: tcp-668655b888-9mmfc, SourceIP: 10.128.1.205, SourcePort: 40510
      Hostname: tcp-668655b888-9mmfc, SourceIP: 10.128.1.205, SourcePort: 40520

      $ oc scale --replicas=1 deploy/<deploy>

      Hostname: tcp-668655b888-xxcn2, SourceIP: 10.128.1.205, SourcePort: 47082
      Hostname: tcp-668655b888-xxcn2, SourceIP: 10.128.1.205, SourcePort: 47088
      Hostname: tcp-668655b888-xxcn2, SourceIP: 10.128.1.205, SourcePort: 54832
      Hostname: tcp-668655b888-xxcn2, SourceIP: 10.128.1.205, SourcePort: 54848

      $ oc scale --replicas=3 deploy/<deploy>

      Hostname: tcp-668655b888-dcwlr, SourceIP: 10.128.1.205, SourcePort: 54850
      Hostname: tcp-668655b888-dcwlr, SourceIP: 10.128.1.205, SourcePort: 46668
      Hostname: tcp-668655b888-xxcn2, SourceIP: 10.128.1.205, SourcePort: 46682
      Hostname: tcp-668655b888-dcwlr, SourceIP: 10.128.1.205, SourcePort: 60144
      Hostname: tcp-668655b888-dcwlr, SourceIP: 10.128.1.205, SourcePort: 60150
      Hostname: tcp-668655b888-xxcn2, SourceIP: 10.128.1.205, SourcePort: 60160
      Hostname: tcp-668655b888-xxcn2, SourceIP: 10.128.1.205, SourcePort: 51720

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              npinaeva@redhat.com Nadia Pinaeva
              rhn-support-vkochuku Vinu Kochukuttan
              Jean Chen Jean Chen
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                Updated:
                Resolved: