Error:

$ kubectl -n istio-system get deploy
NAME                   READY   UP-TO-DATE   AVAILABLE   AGE
istio-ingressgateway   2/3     3            2           15d
istiod                 3/3     3            3           15d


$ kubectl -n istio-system get pods
NAME                                    READY   STATUS    RESTARTS      AGE
istio-ingressgateway-7f87959cf9-j4lf9   0/1     Pending   0             15d
istio-ingressgateway-7f87959cf9-smxvk   1/1     Running   7 (14m ago)   15d
istio-ingressgateway-7f87959cf9-vggz8   1/1     Running   6 (14m ago)   15d
istiod-79597b775c-ffkn2                 1/1     Running   7 (14m ago)   15d
istiod-79597b775c-wktks                 1/1     Running   0             15d
istiod-79597b775c-wrs9w                 1/1     Running   8 (14m ago)   15d


$  kubectl describe pod istio-ingressgateway-7f87959cf9-j4lf9 -n=istio-system

  Warning  FailedScheduling  28m (x43 over 3h31m)   default-scheduler  0/1 nodes are available: 1 Insufficient memory. preemption: 0/1 nodes are available: 1 No preemption victims found for incoming pod.
  Warning  FailedScheduling  15m (x2 over 20m)      default-scheduler  0/1 nodes are available: 1 Insufficient memory. preemption: 0/1 nodes are available: 1 No preemption victims found for incoming pod.
  Warning  FailedScheduling  4m49s (x2 over 9m50s)  default-scheduler  0/1 nodes are available: 1 Insufficient cpu. preemption: 0/1 nodes are available: 1 No preemption victims found for incoming pod.

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