Briefly, this error occurs when you attempt to create a snapshot in an Elasticsearch repository that has been set to read-only mode. This mode prevents any write operations, including creating snapshots. To resolve this issue, you can either change the repository settings to read-write mode or create a new repository that allows write operations. Additionally, ensure that the user has the necessary permissions to perform write operations in the repository.
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, snapshot.
Log Context
Log “cannot create snapshot in a readonly repository” class name is SnapshotsService.java. We extracted the following from Elasticsearch source code for those seeking an in-depth context :
// TODO: create snapshot UUID in CreateSnapshotRequest and make this operation idempotent to cleanly deal with transport layer
// retries
final SnapshotId snapshotId = new SnapshotId(snapshotName; UUIDs.randomBase64UUID()); // new UUID for the snapshot
Repository repository = repositoriesService.repository(request.repository());
if (repository.isReadOnly()) {
listener.onFailure(new RepositoryException(repository.getMetadata().name(); "cannot create snapshot in a readonly repository"));
return;
}
submitCreateSnapshotRequest(request; listener; repository; new Snapshot(repositoryName; snapshotId); repository.getMetadata());
}
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