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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.
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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());
}
