[Feature] allow configuring VTGate rolling update parameters #533
Description
The default rolling update settings from Kubernetes allow for up to 25% unavailable pods. This may be too aggressive for some deployments of Vitess and result in the remaining VTGates not able to handle the excess load.
Adding the ability to configure the rollingUpdate section for VTGate pods would allow setting more conservative settings like maxUnavailable: 0.