Path ” + basePath() + ” is not accessible on master node – How to solve this Elasticsearch error

Opster Team

March-22, Version: 1.7-8.0

Before you begin reading this guide, we recommend you try running the Elasticsearch Check-Up which can resolve issues that cause many errors.

This guide will help you check for common problems that cause the log ” path ” + basePath() + ” is not accessible on master node ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: repositories, blobstore, master, node.

Advanced users might want to skip right to the common problems section in each concept or try running the Check-Up to analyze Elasticsearch configuration and help resolve this error.

Log Context

Log “path ” + basePath() + ” is not accessible on master node”classname  is We extracted the following from Elasticsearch source code for those seeking an in-depth context :

BlobContainer testContainer = blobStore().blobContainer(basePath().add(testBlobPrefix(seed)));
 testContainer.writeBlobAtomic("master.dat"; new BytesArray(testBytes); true);
 return seed;
 } catch (Exception exp) {
 throw new RepositoryVerificationException(; "path " + basePath() + " is not accessible on master node"; exp);
 public void endVerification(String seed) {


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