Elasticsearch Stuff

Cluster health

GET /_cat/health?v
GET /_cat/shards?v&h=index,shard,prirep,state,unassigned.reason
GET /_cat/nodes?v
GET /_nodes/jvm
GET /_nodes/stats
GET /_cluster/allocation/explain
GET /_cat/recovery?v&active_only&h=index,stage,bytes_total,bytes_percent,time

Snapshots

GET /_snapshot
GET /_snapshot/<name>/*

Running tasks

GET /_tasks
GET /_tasks/<name>:<num>

'reindex' tasks are maybe worth looking out for before carrying out cluster work.