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Briefly, this error occurs when there’s an attempt to register a repository that already exists in OpenSearch. This could be due to a configuration issue or a script error. To resolve this, you can either delete the existing repository if it’s no longer needed or update your script or configuration to use a different repository name. Alternatively, you can check if the repository is being used elsewhere and remove the blockage if it’s not necessary.
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This guide will help you check for common problems that cause the log ” non-internal repository [{}] already registered. this repository will block the ” to appear. To understand the issues related to this log, read the explanation below about the following OpenSearch concepts: repositories, repository.
Quick links
Overview
An OpenSearch snapshot provides a backup mechanism that takes the current state and data in the cluster and saves it to a repository (read snapshot for more information). The backup process requires a repository to be created first. The repository needs to be registered using the _snapshot endpoint, and multiple repositories can be created per cluster. The following repository types are supported:
Repository types
| Repository type | Configuration type |
|---|---|
| Shared file system | Type: “fs” |
| S3 | Type : “s3” |
| HDFS | Type :“hdfs” |
| Azure | Type: “azure” |
| Google Cloud Storage | Type : “gcs” |
Examples
To register an “fs” repository:
PUT _snapshot/my_repo_01
{
"type": "fs",
"settings": {
"location": "/mnt/my_repo_dir"
}
}Notes and good things to know
- S3, HDFS, Azure and Google Cloud require a relevant plugin to be installed before it can be used for a snapshot.
- The setting, path.repo: /mnt/my_repo_dir needs to be added to opensearch.yml on all the nodes if you are planning to use the repo type of file system. Otherwise, it will fail.
- When using remote repositories, the network bandwidth and repository storage throughput should be high enough to complete the snapshot operations normally, otherwise you will end up with partial snapshots.
Log Context
Log “non-internal repository [{}] already registered. this repository will block the” classname is RepositoriesService.java.
We extracted the following from OpenSearch source code for those seeking an in-depth context :
});
if (type.equals(repository.getMetadata().type()) == false) {
logger.warn(new ParameterizedMessage("internal repository [{}][{}] already registered. this prevented the registration of " +
"internal repository [{}][{}]."; name; repository.getMetadata().type(); name; type));
} else if (repositories.containsKey(name)) {
logger.warn(new ParameterizedMessage("non-internal repository [{}] already registered. this repository will block the " +
"usage of internal repository [{}][{}]."; name; metadata.type(); name));
}
}
public void unregisterInternalRepository(String name) {
