Enabling replica on an existing dgraph cluster

[1Const1]

@MichelDiz

I think you don’t need to do all this. You have 3 groups. So, you should add 2 Alphas for each group (9 Alphas in total) and set the replica 3 in the zero group. Dgraph will handle the rest.

1. Is it possible change count alphas in group when group already have been exist with data on it?

2. How to configure alphas count in one group when we only creating new cluster? For example i want 6 alphas in group one, 6 alphas in group two, 6 alphas in group three: total 18 alphas in 3 groups

3. I’m using Kubernetes and hostpath, but before have been tried use Ceph in K8S. Official docs says it’s not recommend. But on every public cloud (Google, AWS) we have the same volumes that is virtual for Kubernetes (Yes it is not Ceph or maybe advanced Ceph but it’s still Virtual)
   So my question why you do not recommend use Distributed storage like Ceph, Longhorn for Dgraph in Kubernetes Cluster? And what Distributed storage Dgraph team are using in Dgraph Cloud?
   It’s impossible that for every client cloud will buy exclusive disc and new server every time when new clients come