I upgraded my cluster from 1.7 to 2.1. Everything was green with the migration plugin.
Some of my indices where set as read only.
After the upgrade ALL my indices are not readable. I got a ClusterBlockException when a do a basic _search request. Indices are OPEN.
Here is the config of the cluster and a index:
The only solution i have is to re-index everything but it's HUGE!
Any idea to solve this ?