There are no products showing on store front. After routine health checkup of the store, below error found during the reindex:
php bin/magento indexer:reindex catalogsearch_fulltext
Cluster_block_exception [TOO_MANY_REQUESTS/12/Disk Usage Exceeded Flood-Stage Watermark, Index Has Read-Only-Allow-Delete Block]
Folks, during further debugging found that, 'This error occurred when the Elasticsearch feels that the disk is running low on space so it puts itself into read-only mode.'
To solve the issue, I followed below steps and it go resolved:
Step 1 : Go to your root project in command line
Step 2 : Run below mentioned command
curl -XPUT -H "Content-Type: application/json" http://localhost:9200/_cluster/settings -d '{ "transient": { "cluster.routing.allocation.disk.threshold_enabled": false } }'
Step 3 : After running above command successfully, run below mentioned command:
curl -XPUT -H "Content-Type: application/json" http://localhost:9200/_all/_settings -d '{"index.blocks.read_only_allow_delete": null}'
Step 4 : After running above codes, run below mentioned commands
php bin/magento indexer:reindex
php bin/magento cache:clean
After the above 4 simple steps, issue has been resolved at my end.
As this site suggest : Meetanshi - Solve ‘cluster block exception’
The “disk usage exceeded flood-stage watermark” error while reindexing in Magento 2 can be solved by disabling the cluster routing allocation disk threshold. You can follow the steps mentioned below to solve the ‘cluster block exception’ in Magento 2:
You can try to do these steps :
curl -XPUT -H "Content-Type: application/json" http://localhost:9200/_cluster/settings -d '{ "transient": { "cluster.routing.allocation.disk.threshold_enabled": false } }'
curl -XPUT -H "Content-Type: application/json" http://localhost:9200/_all/_settings -d '{"index.blocks.read_only_allow_delete": null}'
In addition, you can also run the following commands
php bin/magento setup:upgrade
php bin/magento setup:static-content:deploy
php bin/magento indexer:reindex
php bin/magento cache:clean
hope it work for you
