LVScare

README

LVScare

A lightweight LVS baby care, support ipvs health check

Feature

If ipvs real server is unavilible, remove it, if real server return to normal, add it back. This is useful for kubernetes master HA.

Quick Start

lvscare --vs 10.103.97.12:6443 --rs 192.168.0.2:6443 --rs 192.168.0.3:6443 --rs 192.168.0.4:6443 --run-once

Then kubeadm join can use 10.103.97.12:6443 instead real masters.

Run lvscare as a static pod on every kubernetes node.

lvscare --vs 10.103.97.12:80 --rs 192.168.0.2:6443 --rs 192.168.0.3:6443 --rs 192.168.0.4:6443 -t 5s

• -t every 5s check the real server port
• --probe "https://192.168.0.2:6443/healthz" if not return 200 OK, remove the realserver