Briefly, this error occurs when the Elasticsearch is configured to use Azure as a repository for snapshots, but the proxy type for the Azure connection is not defined, even though the proxy host or port is set. To resolve this issue, you need to specify the proxy type in the Elasticsearch configuration. The proxy type could be either “http” or “https”. If you’re not using a proxy, ensure that the proxy host and port are not set in the configuration.
This guide will help you check for common problems that cause the log ” Azure Proxy port or host have been set but proxy type is not defined. ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: azure, repository-azure, repositories.
Overview
An Elasticsearch 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 elasticsearch.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 “Azure Proxy port or host have been set but proxy type is not defined.” class name is AzureStorageSettings.java. We extracted the following from Elasticsearch source code for those seeking an in-depth context :
this.timeout = timeout;
this.maxRetries = maxRetries;
// Register the proxy if we have any
// Validate proxy settings
if (proxyType.equals(Proxy.Type.DIRECT) && ((proxyPort != 0) || Strings.hasText(proxyHost))) {
throw new SettingsException("Azure Proxy port or host have been set but proxy type is not defined.");
}
if ((proxyType.equals(Proxy.Type.DIRECT) == false) && ((proxyPort == 0) || Strings.isEmpty(proxyHost))) {
throw new SettingsException("Azure Proxy type has been set but proxy host or port is not defined.");
}
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