Case study
20 Production Hosts Modernized With Zero Downtime for a Global Bank
How SquareShift re-platformed 20 production hosts for a global banking group's Elastic Cloud Enterprise platform, backing up before every phase and holding zero data loss and no downtime throughout.
Book a session →
Client
A leading global financial services and banking group running live financial infrastructure on Elastic Cloud Enterprise, under a strict mandate of zero data loss and no downtime.
Industry
Financial Services
Services
Stack
Elastic Cloud Enterprise · Elastic Stack · RHEL 7 · RHEL 8 · Docker · Podman · ZooKeeper
How SquareShift delivered it.
The challenge
The client's control plane and 20 production hosts had fallen behind on every software layer, all while running live financial infrastructure under a strict rule of zero data loss and no downtime. There was no room to treat the upgrade as routine maintenance.
What we delivered
SquareShift ran the modernization as 8 phases, each one opening with a verified backup and snapshot before making any change. Hosts moved through maintenance mode one at a time, migrating role by role from RHEL 7 and Docker to RHEL 8 and Podman, with a health check after every step.
Director migrations kept the ZooKeeper quorum intact throughout, so nothing advanced until the previous step had proven itself safe. Planning a platform move like this? See our Elasticsearch migration services.
The outcome
All 20 hosts now run RHEL 8 and Podman, and every managed deployment runs the newer Elastic Stack, with zero data loss and no unplanned downtime across the whole migration.
On live financial infrastructure, the backup you take before a change matters more than the change itself — it's what lets you move fast without ever needing a rollback story.
Platform & Software Engineering Practice Lead, SquareShift
