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Briefly, this error occurs when OpenSearch cannot successfully complete a health check of a specific node or cluster. This could be due to network issues, high load, or configuration problems. To resolve this, you can check the network connectivity between nodes, ensure that the system is not overloaded, and verify the configuration settings. Additionally, check the OpenSearch logs for more detailed error messages that can provide further insights into the problem. Restarting the node or cluster may also help if the issue is temporary.
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This guide will help you check for common problems that cause the log ” health check of [{}] failed ” to appear. To understand the issues related to this log, read the explanation below about the following OpenSearch concepts: monitor.
Log Context
Log “health check of [{}] failed” classname is FsHealthService.java.
We extracted the following from OpenSearch source code for those seeking an in-depth context :
}
currentUnhealthyPaths.add(path);
}
}
} catch (Exception ex) {
logger.error(new ParameterizedMessage("health check of [{}] failed"; path); ex);
if (currentUnhealthyPaths == null) {
currentUnhealthyPaths = new HashSet(1);
}
currentUnhealthyPaths.add(path);
}
