If you get below type indexer related error in command line and want to resolve,

user1234@user1234-pc /var/www/html/magento241 $ php bin/magento indexer:reindex
Design Config Grid index has been rebuilt successfully in 00:00:04
Customer Grid index has been rebuilt successfully in 00:00:04
Category Products index has been rebuilt successfully in 00:00:01
Product Categories index has been rebuilt successfully in 00:00:00
Catalog Rule Product index has been rebuilt successfully in 00:00:06
Product EAV index has been rebuilt successfully in 00:00:01
Stock index has been rebuilt successfully in 00:00:01
Inventory index has been rebuilt successfully in 00:00:00
Catalog Product Rule index has been rebuilt successfully in 00:00:00
Product Price index has been rebuilt successfully in 00:00:01
Catalog Search index process unknown error:
{"error":{"root_cause":[{"type":"cluster_block_exception","reason":"index [magento2_product_1_v1] blocked by: [TOO_MANY_REQUESTS/12/disk usage exceeded flood-stage watermark, index has read-only-allow-delete block];"}],"type":"cluster_block_exception","reason":"index [magento2_product_1_v1] blocked by: [TOO_MANY_REQUESTS/12/disk usage exceeded flood-stage watermark, index has read-only-allow-delete block];"},"status":429}

Then follow below steps:

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 another below mentioned command

curl -XPUT -H "Content-Type: application/json" http://localhost:9200/_all/_settings -d '{"index.blocks.read_only_allow_delete": null}'

After running above codes, run below mentioned commands

– php bin/magento setup:upgrade
– php bin/magento setup:static-content:deploy
– php bin/magento indexer:reindex
– php bin/magento cache:clean

That’s it.

Now, your reindexer related issue should be resolved.

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