Cannot create snapshot in a readonly repository – How to solve this Elasticsearch error

Opster Team

July-20, Version: 1.7-8.0

Before you begin reading this guide, we recommend you try running the Elasticsearch Error Check-Up which analyzes 2 JSON files to detect many configuration 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 ” cannot create snapshot in a readonly repository ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: repository and snapshot.

Log Context

Log “cannot create snapshot in a readonly repository”classname  is We extracted the following from Elasticsearch source code for those seeking an in-depth context :

validate(repositoryName; snapshotName);
 final SnapshotId snapshotId = new SnapshotId(snapshotName; UUIDs.randomBase64UUID()); // new UUID for the snapshot
 Repository repository = repositoriesService.repository(request.repository());
 if (repository.isReadOnly()) {
 new RepositoryException(repository.getMetadata().name(); "cannot create snapshot in a readonly repository"));
 final Snapshot snapshot = new Snapshot(repositoryName; snapshotId);
 final Map userMeta = repository.adaptUserMetadata(request.userMetadata());
 repository.executeConsistentStateUpdate(repositoryData -> new ClusterStateUpdateTask() {


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