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SSH Differences Between Staging and INI Configuration Methods

The Question

Recently, a customer asked us:

If we move to using the INI configuration method instead of staging, would password-less SSH still be required?

The Answer

The answer is both "Yes" and "No"

No, for installation and updates/upgrades specifically. Since INI-based configurations force the tpm command to act upon the local host only for installs and updates/upgrades, password-less SSH is not required.

Yes, because there are certain commands that do rely upon password-less SSH to function. These are:

  • tungsten_provision_slave
  • prov-sl.sh
  • multi_trepctl
  • tpm diag (pre-6.0.5)
  • tpm diag --hosts (>= 6.0.5)
  • Any tpm-based backup and restore operations that involve a remote node

Summary

The Wrap-Up

In this blog post we discussed the SSH differences between the Staging and INI configuration methods.

To learn about Continuent solutions in general, check out https://www.continuent.com/solutions

The Library

Please read the docs!

For more information about monitoring Tungsten clusters, please visit https://docs.continuent.com.

Tungsten Clustering is the most flexible, performant global database layer available today - use it underlying your SaaS offering as a strong base upon which to grow your worldwide business!

For more information, please visit https://www.continuent.com/solutions

Want to learn more or run a POC? Contact us.

About the Author

Eric M. Stone
COO

Eric is a veteran of fast-paced, large-scale enterprise environments with 35 years of Information Technology experience. With a focus on HA/DR, from building data centers and trading floors to world-wide deployments, Eric has architected, coded, deployed and administered systems for a wide variety of disparate customers, from Fortune 500 financial institutions to SMB’s.

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