The same problem here.
Filebeat 7.4.2
OpenShift: v3.11.117 (Kubernetes: v1.11.0+d4cacc0)
Works fine on all 9 nodes, except one, fails on start with the error below:
panic: runtime error: invalid memory address or nil pointer dereference [recovered]
panic: runtime error: invalid memory address or nil pointer dereference
[signal SIGSEGV: segmentation violation code=0x1 addr=0x0 pc=0x21ba515]
goroutine 99 [running]:
github.com/elastic/beats/vendor/k8s.io/apimachinery/pkg/util/runtime.HandleCrash(0x0, 0x0, 0x0)
/go/src/github.com/elastic/beats/vendor/k8s.io/apimachinery/pkg/util/runtime/runtime.go:58 +0x105
panic(0x2c827a0, 0x4b89700)
/usr/local/go/src/runtime/panic.go:522 +0x1b5
github.com/elastic/beats/libbeat/common/kubernetes.(*MetaGeneratorConfig).ResourceMetadata(0xc000146140, 0x339f980, 0xc0044ac2c0, 0x2f9194a)
/go/src/github.com/elastic/beats/libbeat/common/kubernetes/metadata.go:113 +0x485