参考: http://www.jwsblog.com/archives/59.html
UNASSIGNED
https://www.elastic.co/guide/en/elasticsearch/reference/5.6/breaking_50_allocation.html
The reroute command allocate has been split into two distinct commands allocate_replica and allocate_empty_primary. This was done as we introduced a new allocate_stale_primary command. The new allocate_replica command corresponds to the old allocate command with allow_primary set to false. The new allocate_empty_primary command corresponds to the old allocate command with allow_primary set to true.
1 | POST /_cluster/reroute |
但是: