92 lines
3.0 KiB
Markdown
92 lines
3.0 KiB
Markdown
---
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layout: default
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title: Common issues
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nav_order: 1
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has_toc: false
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---
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# Common issues
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This page contains a list of common issues and workarounds.
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## Java error during startup
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You might see `[ERROR][c.a.o.s.s.t.OpenSearchSecuritySSLNettyTransport] [opensearch-node1] SSL Problem Insufficient buffer remaining for AEAD cipher fragment (2). Needs to be more than tag size (16)` when starting OpenSearch. This problem is a [known issue with Java](https://bugs.openjdk.java.net/browse/JDK-8221218) and doesn't affect the operation of the cluster.
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## OpenSearch Dashboards fails to start
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If you encounter the error `FATAL Error: Request Timeout after 30000ms` during startup, try running OpenSearch Dashboards on a more powerful machine. We recommend four CPU cores and 8 GB of RAM.
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## Encryption at rest
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The operating system for each OpenSearch node handles encryption of data at rest. To enable encryption at rest in most Linux distributions, use the `cryptsetup` command:
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```bash
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cryptsetup luksFormat --key-file <key> <partition>
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```
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For full documentation on the command, see [the Linux man page](http://man7.org/linux/man-pages/man8/cryptsetup.8.html).
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{% comment %}
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## Beats
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If you encounter compatibility issues when attempting to connect Beats to OpenSearch, make sure you're using the Apache 2.0 distribution of Beats, not the default distribution, which uses a proprietary license.
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Try this minimal output configuration for using Beats with the security plugin:
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```yml
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output.elasticsearch:
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hosts: ["localhost:9200"]
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protocol: https
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username: "admin"
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password: "admin"
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ssl.certificate_authorities:
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- /full/path/to/root-ca.pem
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ssl.certificate: "/full/path/to/client.pem"
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ssl.key: "/full/path/to/client-key.pem"
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```
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Even if you use the OSS version, Beats might check for a proprietary plugin on the OpenSearch server and throw an error during startup. To disable the check, try adding these settings:
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```yml
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setup.ilm.enabled: false
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setup.ilm.check_exists: false
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```
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## Logstash
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If you have trouble connecting Logstash to OpenSearch, try this minimal output configuration, which works with the security plugin:
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```conf
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output {
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elasticsearch {
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hosts => ["localhost:9200"]
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index => "logstash-index-test"
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user => "admin"
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password => "admin"
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ssl => true
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cacert => "/full/path/to/root-ca.pem"
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ilm_enabled => false
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}
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}
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```
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{% endcomment %}
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## Can't update by script when FLS, DLS, or field masking is active
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The security plugin blocks the update by script operation (`POST <index>/_update/<id>`) when field-level security, document-level security, or field masking are active. You can still update documents using the standard index operation (`PUT <index>/_doc/<id>`).
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## Illegal reflective access operation in logs
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This is a known issue with Performance Analyzer that shouldn't affect functionality.
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## Multi-tenancy issues in OpenSearch Dashboards
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If you're testing multiple users in OpenSearch Dashboards and encounter unexpected changes in tenant, use Google Chrome in an Incognito window or Firefox in a Private window.
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