For explanation purposes, let’s imagine that we have a cluster consisting of three nodes. It contains one index called blogs that has two primary shards. Each primary shard has two replicas. Copies of the same shard are never allocated to the same node, so our cluster looks something like Figure 8, “1개의 index와 3개의 node를 가진 cluster”.설명을 위해, 3개의 node를 가진 cluster를 가정해 보자. 그것은 2개의 primary shard를 가진 ..