No node meta data at – How to solve this Elasticsearch exception

Opster Team

August-23, Version: 6.8-8.9

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Briefly, this error occurs when Elasticsearch cannot find the metadata for a specific node. This could be due to a misconfiguration, a failed node, or data corruption. To resolve this issue, you can try the following: 1) Check the Elasticsearch configuration files for any errors. 2) Restart the problematic node or the entire cluster. 3) If the problem persists, consider restoring from a backup. 4) If data corruption is suspected, you may need to rebuild the index. Always ensure that your data is regularly backed up to prevent loss.

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This guide will help you check for common problems that cause the log ” No node meta data at ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: shard, node, index.

Log Context

Log “No node meta data at” class name is RemoveCorruptedShardDataCommand.java. We extracted the following from Elasticsearch source code for those seeking an in-depth context :

 private static void printRerouteCommand(ShardPath shardPath; Terminal terminal; boolean allocateStale) throws IOException {
 final Path dataPath = getDataPath(shardPath);
 final NodeMetadata nodeMetadata = PersistedClusterStateService.nodeMetadata(dataPath);  if (nodeMetadata == null) {
 throw new ElasticsearchException("No node meta data at " + dataPath);
 }  final String nodeId = nodeMetadata.nodeId();
 final String index = shardPath.getShardId().getIndexName();
 final int id = shardPath.getShardId().id();

 

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