Day by Day
Day by Day delivers Linux, cloud, and platform engineering work for organizations that need reliable infrastructure changes, migrations, automation, or troubleshooting.
We work best when there is a clear problem to solve or a platform improvement to deliver: a review, migration, hardening step, automation rollout, production-readiness improvement, or difficult technical issue that needs clear ownership through diagnosis, remediation, and handover.
Design and migration planning for Linux platforms: Kubernetes, OpenStack, cloud and bare metal. We size for the load you actually run and name the failure domains; cost and operational risk sit in the design document, not in an appendix. The result is a plan that can be built from.
Provisioning, configuration management and delivery pipelines with Ansible and Puppet, committed to your GitLab or GitHub. Automation your team can read, change and hand over — not scripts that only work once.
Reliability work on production platforms: monitoring and alerting that only pages for things someone can act on, runbooks an on-call engineer can follow at 03:00, high-availability changes, and the production-readiness fixes that get dropped when a project runs late.
Support runs on a schedule rather than a scramble: patching and upgrades, capacity and backup checks, and someone watching the alerts — for the platforms we built, and for the ones we did not. Response times and coverage are agreed per client.
Root-cause analysis for production faults, performance regressions, failed upgrades, and the intermittent failures nobody can reproduce. We plan and run migrations the same way: VMware or bare metal onto Kubernetes on libvirt or OpenStack, an ageing OpenStack onto a current release, on-premises estates into cloud or VPS. Dependencies, sequencing, cutover and rollback are settled before anything moves.
