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* scrape: Add global jitter for HA server Covers issue in https://github.com/prometheus/prometheus/pull/4926#issuecomment-449039848 where the HA setup become a problem for targets unable to be scraped simultaneously. The new jitter per server relies on the hostname and external labels which necessarily to be uniq. As before, scrape offset will be calculated with regard the absolute time, so even restart/reload doesn't change scrape time per scrape target + prometheus instance. Use fqdn if possible, otherwise fall back to the hostname. It adds extra random seed to calculate server hash to be distinguish on machines with the same hostname, but different DC. Signed-off-by: Aleksei Semiglazov <xjewer@gmail.com> |
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| .. | ||
| testdata | ||
| helpers_test.go | ||
| manager.go | ||
| manager_test.go | ||
| scrape.go | ||
| scrape_test.go | ||
| target.go | ||
| target_test.go | ||