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Archiving

Fast, highly available storage is expensive. That means setting long retention times in Graylog or any other log management system can trigger serious cost constraints.

The good news is that, for the majority of use cases, you only need to perform instant log searches over a relatively short period of time. Many of our users want to keep 365 days of log data, but usually search over only the last 30 days..

With the Archiving functionality in Graylog Operations and Graylog Security, you can streamline operations by storing older data on slow storage and easily re-importing it into Graylog when you need it, simultaneously restore or delete multiple archives to quickly initiate extensive investigations for auditing requirements that require searching across a larger time range for compliance with HIPAA, PCI, or other requirements, or free up storage space to house new archives.

Also available in Graylog Operations, Graylog Security, and Graylog Open is Smart Indexing, a capability that eliminates the need to manually tune of your environment that can automatically adjust based on what is happening in your environment, instead of relying on the hit-or-miss manual process of tuning for averages.

HOW IT WORKS

Graylog has a configuration that tells it how long to keep log data. The standard behavior is to just delete data that contains log messages older than the configured retention period. The archiving functionality configures Graylog to automatically write all messages of an index to flat files on disk before deleting the index.

Simply configure the details in the Graylog console: where to send the index files, how long before re-indexing, how long to keep the files before overwriting, how large the files are allowed to get, what compression type you want to use, and a few other options. You can even archive some streams while automatically deleting old data in others to minimize the amount of storage you need while still addressing your different use cases.

If you need to take another look at archived data, you can temporarily re-import any archives for analysis in Graylog using the web interface. After you finish, you can once again delete the imported archive data.

EXAMPLES

  • Compliance mandates
    This is one of the most common reasons our customers archive their data. Depending on industry and data processed, it could be just a few months’ worth, 3-5 years, or even near permanently.
  • Security Forensics
    It’s not unusual to find that a security incident began months before it was discovered. Logs are critical for determining when the exposure first occurred and what damage was done.

FREQUENTLY ASKED QUESTIONS

  • Where can I store the archive files?
    Because the archive files are simple plain text files, you can store them wherever you want. Put them on tape, burn them to a DVD, move them to cheap storage, or upload them to a cloud server. You’ll be able to temporarily re-import the data back into Graylog whenever needed.
  • Are Archives compressed?
    Yes, they are GZIP compressed by default, but you can apply any other compression that you want.

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