Helpful Hints

Resolving Elasticsearch 9.0.1 Upgrade Issues with Custom Plugin Compatibility
Resolving Elasticsearch 9.0.1 Upgrade Issues with Custom Plugin Compatibility
Daniel Gleim || 2026-07-14
If you want to to upgrade from Elasticsearch 8.x to 9.0, you need to understand how plugin compatibility works and what to do when things don't go as planned
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Elasticsearch Snapshot Restore Fails Despite Setting index.blocks.write: A Version Compatibility Deep Dive
Elasticsearch 8 to 9 Snapshot Restore Fails? The 7.x-Origin Index Trap and the Fix That Worked
Daniel Gleim || 2026-06-17
This scenario highlights a subtle but important aspect of cross-version compatibility that caught one user off guard during their upgrade from 8.7.1 to 9.0.1
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SG BlogHeader MigratingElasticsearch6 8
Migrating Elasticsearch Indexes from Version 6 to 8: A Real-World Approach
Jochen Kressin || 2025-10-23
Upgrading Elasticsearch from 6 to 8? Navigate architectural changes to indexes with a practical, proven migration approach.
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elasticsearch index pattern username
Helpful Hint: Username substitution in index patterns
Jochen Kressin || 2023-06-22
We explaine how to use variable substitution in index patterns to create dynamic roles that incorporate user attributes
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assign elasticserach roles by ip
Helpful Hint: Assign roles based on IPs or hostnames
Jochen Kressin || 2020-11-19
How to dynamically assign Search Guard roles based on the IP address or the hostname of the caller.
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elasticsearch block ips
Helpful Hint: Blocking IPs in Elasticsearch
Jochen Kressin || 2020-11-12
How to use the blocks configuration to block certain IPs or IP ranges from accessing Elasticsearch on a global level.
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elasticsearch date math access control
Search Guard Helpful Hints: Limit access to most recent Elasticsearch indices
Jochen Kressin || 2020-10-15
How to use Elasticsearch date math expressions with Search Guard to limit data access to the most recent indices only.
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Search Guard is a trademark of floragunn GmbH, registered in the U.S. and in other countries. Elasticsearch, Kibana, Logstash, and Beats are trademarks of Elasticsearch BV, registered in the U.S. and in other countries. Apache and Apache Lucene are trademarks of the Apache Software Foundation in the United States and/or other countries.