| # Upgrading to Gerrit 2.15: a real-life story on GerritHub.io |
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| Upgrading is always a pain: learning from other people's mistakes |
| is the only way to plan for a flawless transition to new releases. |
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| GerritHub.io has been upgraded successfully to Gerrit 2.15 back in |
| April with zero-downtime but some [bumps on the road](https://gitenterprise.me/2018/04/27/gerrithub-is-on-notedb-with-a-bump/). |
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| See how the process worked and discuss with Luca Milanesio the challenges and tricks to migrate to Gerrit 2.15 and NoteDb without impacting your users: |
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| - How to plan the upgrade |
| - What to expect in terms of resources utilisation |
| - Disaster recovery plan |
| - Monitoring |
| - Split between reindex phase and NoteDb on-line migration |
| - Post-upgrade metrics |
| - Retrospective after 6 months on Gerrit 2.15/NoteDb |
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| *[Luca Milanesio, Gerrit Maintainer - GerritForge Ltd](../speakers.md#lmilanesio)* |
