[upgrade by operator from 1.5.1 to 1.5.4] svc istio-pilot is missing, istio-ingressgateway Envoy is NOT ready

[pixystone]

Bug description

2020-07-06T07:10:22.579428Z     info    Envoy proxy is NOT ready: config not received from Pilot (is Pilot running?): cds updates: 0 successful, 0 rejected;
 lds updates: 0 successful, 0 rejected

the discovery-address is

--discoveryAddress="istio-pilot.istio-system.svc:15012"

but no svc named istio-pilot in my cluster, it may be chaned to istiod.

$ki get svc
NAME                        TYPE        CLUSTER-IP   EXTERNAL-IP   PORT(S)                                                    AGE
istio-citadel               ClusterIP   None         <none>        8060/TCP,15014/TCP                                         4h39m
istio-ingressgateway        ClusterIP   None         <none>        80/TCP,443/TCP                                             73d
istiod                      ClusterIP   None         <none>        15012/TCP,443/TCP                                          73d
jaeger-agent                ClusterIP   None         <none>        5775/UDP,6831/UDP,6832/UDP                                 73d
jaeger-collector-headless   ClusterIP   None         <none>        14250/TCP                                                  73d
kiali                       ClusterIP   None         <none>        20001/TCP                                                  73d
prometheus                  ClusterIP   None         <none>        9090/TCP                                                   73d

I added a istio-pilot svc to workaround it.

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Expected behavior

Steps to reproduce the bug

Version (include the output of istioctl version --remote and kubectl version and helm version if you used Helm)

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Environment where bug was observed (cloud vendor, OS, etc)

[pixystone]

The root cause may the same as #25235

[istio-policy-bot]

🚧 This issue or pull request has been closed due to not having had activity from an Istio team member since 2020-07-06. If you feel this issue or pull request deserves attention, please reopen the issue. Please see this wiki page for more information. Thank you for your contributions.

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