Replication Distribution Tree

If a cluster has less than 32 leaves then you will see the following output when you run, SHOW REPLICATION STATUS. In this case, the reference database shows the replication across each leaf.

However, if you have a cluster with 32 or more leaves, then all leaves are not displayed when you run SHOW REPLICATION STATUS on the master aggregator. This is because a distribution tree comes into play resulting in the display of only one entry per database.

The distribution tree always fans out one link down from the master aggregator, as shown below. Leaf N1 is the root of the distribution tree and N2, N3, N4 are the other leaves.

You can run SHOW REPLICATION STATUS on the leaf N1 to see the status of it replicating to all the other nodes.

Last modified: June 22, 2022

Was this article helpful?

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.

(Optional) Run the following command to view the associated signature files.
Shell
```
curl undefined
```
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.
  Shell
```
curl -O undefined
```

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

Shell

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