Before you begin reading this guide, we recommend you run Elasticsearch Error Check-Up which analyzes 2 JSON files to detect many errors.
To easily locate the root cause and resolve this issue try AutoOps for Elasticsearch & OpenSearch. It diagnoses problems by analyzing hundreds of metrics collected by a lightweight agent and offers guidance for resolving them.
This guide will help you check for common problems that cause the log ” Failed to send join request to master ; reason ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: discovery-azure-classic.
Log Context
Log “Failed to send join request to master [{}]; reason [{}]” classname is ZenDiscovery.java.
We extracted the following from Elasticsearch source code for those seeking an in-depth context :
}
} else {
if (logger.isTraceEnabled()) {
logger.trace(() -> new ParameterizedMessage("failed to send join request to master [{}]"; masterNode); e);
} else {
logger.info("failed to send join request to master [{}]; reason [{}]"; masterNode;
ExceptionsHelper.detailedMessage(e));
}
return false;
}
}
