Es使用遇到的问题：How to fix ElasticSearch [FORBIDDEN/12/index read-only / allow delete (api)]
If you try to index a document in ElasticSearch and you see an error message like this:
fix-elasticsearch-forbidden-12-index-read-only-allow-delete-api.txt
elasticsearch.exceptions.AuthorizationException: AuthorizationException(403, 'cluster_block_exception', 'blocked by: [FORBIDDEN/12/index read-only / allow delete (api)];')
you can unlock writes to your cluster (all indexes) using
fix-elasticsearch-forbidden-12-index-read-only-allow-delete-api.sh
curl -XPUT -H "Content-Type: application/json" http://localhost:9200/_all/_settings -d '{"index.blocks.read_only_allow_delete": null}'
(thanks to Imran273 on StackOverflow for the original solution)
