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Important

The SingleStore 9.1 release candidate (RC) is available now. It will be promoted to general availability (GA) soon and at that time it will be renamed to SingleStore 10.

In the interim, SingleStore 9.1 RC can be used to preview, evaluate, and provide feedback on the new and upcoming features in SingleStore 10, while SingleStore 9.0 is recommended for production workloads.

Storage Location for Transaction Logs and Snapshots

The datadir engine variable stores the location of transaction logs and snapshots. Transaction logs are typically stored in the /var/lib/memsql/<node_ID>/data/logs directory with the log file names resembling the following format: metrics_3_log_v1_15335424. In this example,

  • metrics is the database name

  • 3 is the partition number

  • log is the file type

  • v1 is the file format version number

  • 15335424 is the log sequence number (LSN)

Snapshots are typically located in the /var/lib/memsql/<node_ID>/data/snapshots directory with the snapshot names resembling the following format: memsql_snapshot_v1_0_28. In this example,

  • memsql is the name of the source database

  • snapshot is the file type

  • v1 is the file format version number

  • the remaining characters represent the sequence number

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Verification instructions

Note: You must install cosign to verify the authenticity of the SingleStore file.

Use the following steps to verify the authenticity of singlestoredb-server, singlestoredb-toolbox, singlestoredb-studio, and singlestore-client SingleStore files that have been downloaded.

You may perform the following steps on any computer that can run cosign, such as the main deployment host of the cluster.

  1. (Optional) Run the following command to view the associated signature files.

    curl undefined

  2. Download the signature file from the SingleStore release server.

    • Option 1: Click the Download Signature button next to the SingleStore file.

    • Option 2: Copy and paste the following URL into the address bar of your browser and save the signature file.

    • Option 3: Run the following command to download the signature file.

      curl -O undefined

  3. After the signature file has been downloaded, run the following command to verify the authenticity of the SingleStore file.

    echo -n undefined |
        cosign verify-blob --certificate-oidc-issuer https://oidc.eks.us-east-1.amazonaws.com/id/CCDCDBA1379A5596AB5B2E46DCA385BC \
          --certificate-identity https://kubernetes.io/namespaces/freya-production/serviceaccounts/job-worker \
          --bundle undefined \
          --new-bundle-format -
    Verified OK

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