During the last year all dTON services were running on kubernetes cluster without HA build. Sometimes when we lost servers, we faced complex problems.

To improve the stability and availability of the service we developed high availability dTON cluster that will continue to work even if some of the servers are unavailable. Additionally, we've got setup complex monitoring and alerting system on services and data consistency.

Today we managed to switch all our services to HA cluster.

In our article we want to share our experience of HA cluster on top of bare-metal servers in three parts:

- dTON Kubernetes High Availability Transition
- dTON LiteServers High Availability Transition
- dTON GraphQL High Availability Transition

Second and third part will be posted exclusively on @dtontech with promo codes on dTON API usage.

https://blog.dton.io/dton-kubernetes-high-availability-transition-part-1/