How gluster and kadalu are related ?

The fundamental idea of the project is described here

Compared to GlusterD there are various points which we consider worth changing:

  • Too many layers, hard to debug
  • Duplication of task is bad, and can cause in-consistency
  • K8s can provide added infrastructure like process management, cluster authentication, monitoring and centralized logging
  • Running more than one process in a container defeats the purpose of microservices
  • Currently, no ideal solution with Gluster for storage in k8s

Therefore kadalu does some things different:

GlusterD kaDalu
Clustering / Peer Management k8s
Volume Management ConfigMap, kubectl apply
Brick process management K8s’s pod management
Portmap for Bricks Not required in new model
Service Management (brick, self-heal, etc) Runs as another container in same pod.
So, managed by k8s as any other pod
Volfile for Bricks, self-heal etc ConfigMap
Quota, Snapshot, Geo-Replication CSI / SideCar containers

Implementation

  • There is no need to have a glusterd running on the host.