Since a couple of weeks, my reported uptimes for most of my pods are incorrect and reset to 0 frequently but at a random rate (sometimes it's reset after a couple of minutes/seconds, sometimes a couple of hours).
The data are sinked to influxdb and displayed with Grafana. Here is a screenshot of the uptime of some MongoDB nodes over a week (none of them have restarted). Only the blue line (node-2) is correct, all other are reset randomly.
Versions:
- kubernetes: 1.8.3
- heapster: 1.4.3 amd64
- influxdb: 1.1.1 amd64
Any idea of what is going wrong?