diff --git a/x-pack/plugins/monitoring/common/types/alerts.ts b/x-pack/plugins/monitoring/common/types/alerts.ts
index bbd217169469d..9abca4cbdc948 100644
--- a/x-pack/plugins/monitoring/common/types/alerts.ts
+++ b/x-pack/plugins/monitoring/common/types/alerts.ts
@@ -208,9 +208,11 @@ export interface CCRReadExceptionsUIMeta extends CCRReadExceptionsStats {
   itemLabel: string;
 }
 
-export interface IndexShardSizeStats extends AlertNodeStats {
+export interface IndexShardSizeStats {
   shardIndex: string;
   shardSize: number;
+  clusterUuid: string;
+  ccs?: string;
 }
 
 export interface IndexShardSizeUIMeta extends IndexShardSizeStats {
diff --git a/x-pack/plugins/monitoring/server/alerts/large_shard_size_rule.test.ts b/x-pack/plugins/monitoring/server/alerts/large_shard_size_rule.test.ts
index 0b8509c4fa56a..f7d6081edd306 100644
--- a/x-pack/plugins/monitoring/server/alerts/large_shard_size_rule.test.ts
+++ b/x-pack/plugins/monitoring/server/alerts/large_shard_size_rule.test.ts
@@ -85,14 +85,10 @@ describe('LargeShardSizeRule', () => {
     const shardSize = 0;
     const clusterUuid = 'abc123';
     const clusterName = 'testCluster';
-    const nodeId = 'myNodeId';
-    const nodeName = 'myNodeName';
     const stat = {
       shardIndex,
       shardSize,
       clusterUuid,
-      nodeId,
-      nodeName,
     };
 
     const replaceState = jest.fn();
diff --git a/x-pack/plugins/monitoring/server/lib/alerts/fetch_index_shard_size.ts b/x-pack/plugins/monitoring/server/lib/alerts/fetch_index_shard_size.ts
index 98bb546b43ab9..9259adc63e546 100644
--- a/x-pack/plugins/monitoring/server/lib/alerts/fetch_index_shard_size.ts
+++ b/x-pack/plugins/monitoring/server/lib/alerts/fetch_index_shard_size.ts
@@ -11,12 +11,8 @@ import { ElasticsearchIndexStats, ElasticsearchResponseHit } from '../../../comm
 import { ESGlobPatterns, RegExPatterns } from '../../../common/es_glob_patterns';
 import { Globals } from '../../static_globals';
 
-interface SourceNode {
-  name: string;
-  uuid: string;
-}
 type TopHitType = ElasticsearchResponseHit & {
-  _source: { index_stats?: Partial<ElasticsearchIndexStats>; source_node?: SourceNode };
+  _source: { index_stats?: Partial<ElasticsearchIndexStats> };
 };
 
 const memoizedIndexPatterns = (globPatterns: string) => {
@@ -90,8 +86,6 @@ export async function fetchIndexShardSize(
                         '_index',
                         'index_stats.shards.primaries',
                         'index_stats.primaries.store.size_in_bytes',
-                        'source_node.name',
-                        'source_node.uuid',
                       ],
                     },
                     size: 1,
@@ -135,10 +129,10 @@ export async function fetchIndexShardSize(
       }
       const {
         _index: monitoringIndexName,
-        _source: { source_node: sourceNode, index_stats: indexStats },
+        _source: { index_stats: indexStats },
       } = topHit;
 
-      if (!indexStats || !indexStats.primaries || !sourceNode) {
+      if (!indexStats || !indexStats.primaries) {
         continue;
       }
 
@@ -151,7 +145,6 @@ export async function fetchIndexShardSize(
        * We can only calculate the average primary shard size at this point, since we don't have
        * data (in .monitoring-es* indices) to give us individual shards. This might change in the future
        */
-      const { name: nodeName, uuid: nodeId } = sourceNode;
       const avgShardSize = primaryShardSizeBytes / totalPrimaryShards;
       if (avgShardSize < thresholdBytes) {
         continue;
@@ -161,8 +154,6 @@ export async function fetchIndexShardSize(
         shardIndex,
         shardSize,
         clusterUuid,
-        nodeName,
-        nodeId,
         ccs: monitoringIndexName.includes(':') ? monitoringIndexName.split(':')[0] : undefined,
       });
     }