# Zero-downtime Gerrit upgrades | |
How to upgrade a Gerrit production instance without pulling the plug. | |
Even without having a fully redundant multi-master setup like Google | |
it is possible to perform a full Gerrit upgrade without having to | |
interrupt incoming traffic. | |
Learn how GerritHub.io managed to: | |
- upgrade its DB | |
- migrate data-center from Europe to America | |
- update Gerrit binaries and plugins | |
- performed full reindex | |
... and keeping its 100% availability at the same time. | |
*Luca Milanesio,GerritForge* |