{"id":9255,"date":"2024-08-14T10:12:34","date_gmt":"2024-08-14T10:12:34","guid":{"rendered":"https:\/\/www.magetop.com\/blog\/?p=9255"},"modified":"2024-08-14T15:55:06","modified_gmt":"2024-08-14T15:55:06","slug":"solving-cluster_block_exception-error-in-magento-2","status":"publish","type":"post","link":"https:\/\/www.magetop.com\/blog\/solving-cluster_block_exception-error-in-magento-2\/","title":{"rendered":"Solving cluster_block_exception Error in Magento 2: Index blocked by [TOO_MANY_REQUESTS\/12\/disk usage exceeded flood-stage watermark, index has read-only-allow-delete block]"},"content":{"rendered":"\n<p>In the world of Magento 2, encountering errors during routine operations like reindexing is not uncommon. One such error, the &#8220;cluster_block_exception,&#8221; can be particularly frustrating, especially when it disrupts critical tasks. Today, we delve into this issue, exploring solutions recommended by experts in the Magento community.<\/p>\n\n\n\n\n\n<h2 class=\"wp-block-heading\">Understanding the Problem<\/h2>\n\n\n\n<p>The &#8220;cluster_block_exception&#8221; error arises in Magento 2 when Elasticsearch encounters a disk usage problem that exceeds the flood-stage watermark. This error puts Elasticsearch in a read-only mode, hindering essential operations like reindexing.<\/p>\n\n\n\n<p>When this error appears, it usually has the following message:<\/p>\n\n\n<div class=\"wp-block-syntaxhighlighter-code \"><pre class=\"brush: plain; auto-links: false; title: ; notranslate\" title=\"\">\n{&quot;error&quot;:{&quot;root_cause&quot;:&#x5B;{&quot;type&quot;:&quot;cluster_block_exception&quot;,&quot;reason&quot;:&quot;index &#x5B;magento2_product_1_v236] blocked by: &#x5B;TOO_MANY_REQUESTS\/12\/disk usage exceeded flood-stage watermark, index has read-only-allow-delete block];&quot;}],&quot;type&quot;:&quot;cluster_block_exception&quot;,&quot;reason&quot;:&quot;index &#x5B;magento2_product_1_v236] blocked by: &#x5B;TOO_MANY_REQUESTS\/12\/disk usage exceeded flood-stage watermark, index has read-only-allow-delete block];&quot;},&quot;status&quot;:429}\n<\/pre><\/div>\n\n\n<h2 class=\"wp-block-heading\">Solution to fix cluster_block_exception error<\/h2>\n\n\n\n<p>As mentioned, Elasticsearch triggered an error due to low disk space, causing the system to go into read-only mode. To resolve this issue, follow these steps:<\/p>\n\n\n\n<p><strong>Step 1: Disable Cluster Routing Allocation Disk Threshold:<\/strong><\/p>\n\n\n\n<p>Run the following command in the Magento 2 root directory:<\/p>\n\n\n<div class=\"wp-block-syntaxhighlighter-code \"><pre class=\"brush: plain; auto-links: false; title: ; notranslate\" title=\"\">\ncurl -XPUT -H &quot;Content-Type: application\/json&quot; http:\/\/localhost:9200\/_cluster\/settings -d '{ &quot;transient&quot;: { &quot;cluster.routing.allocation.disk.threshold_enabled&quot;: false } }'\n<\/pre><\/div>\n\n\n<p><strong>Step 2: Remove read-only status<\/strong>:<\/p>\n\n\n\n<p>Use the following command:<\/p>\n\n\n<div class=\"wp-block-syntaxhighlighter-code \"><pre class=\"brush: plain; auto-links: false; title: ; notranslate\" title=\"\">\ncurl -XPUT -H &quot;Content-Type: application\/json&quot; http:\/\/localhost:9200\/_all\/_settings -d '{&quot;index.blocks.read_only_allow_delete&quot;: null}'\n<\/pre><\/div>\n\n\n<p>After completing the above 2 steps, you can now reindex without encountering this annoying error.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Conclusion<\/h2>\n\n\n\n<p>By following these recommended steps, you can effectively resolve the &#8220;cluster_block_exception&#8221; issue in Magento 2 and ensure smooth reindexing operations. Understanding the root cause of errors like these and implementing targeted solutions is crucial for maintaining a stable Magento 2 environment.<\/p>\n\n\n","protected":false},"excerpt":{"rendered":"<p>Today, we delve into the cluster_block_exception issue in Magento 2, exploring solutions recommended by 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