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