Hi, all.
I have deployed prometheus v2.5.2 through the prometheus-operator helm chart recently, and noticed a lot of logs by kubelet, something like:
```
Feb 27 15:25:12 ucpmanage-test kubelet[2738]: I0227 15:25:12.141526 2738 server.go:875] storeContainerLabels is %t
Feb 27 15:25:12 ucpmanage-test kubelet[2738]: false
Feb 27 15:25:12 ucpmanage-test kubelet[2738]: I0227 15:25:12.146732 2738 server.go:875] storeContainerLabels is %t
Feb 27 15:25:12 ucpmanage-test kubelet[2738]: false
Feb 27 15:25:12 ucpmanage-test kubelet[2738]: I0227 15:25:12.150555 2738 server.go:875] storeContainerLabels is %t
Feb 27 15:25:12 ucpmanage-test kubelet[2738]: false
Feb 27 15:25:12 ucpmanage-test kubelet[2738]: I0227 15:25:12.153712 2738 server.go:875] storeContainerLabels is %t
Feb 27 15:25:12 ucpmanage-test kubelet[2738]: false
```
About 800 lines per minutes. And when I stopped the prometheus Pod, the logs stopped.
Any ideas?
My system information:
Linux 4.17.5-1.el7.elrepo.x86_64 x86_64
prometheus, version 2.15.2 (branch: HEAD, revision: d9613e5)
build user: root@688433cf4ff7
build date: 20200106-14:50:51
go version: go1.13.5
Kubernetes v1.13.0