When Does a Startup Really Need Kubernetes?
The actual need for Kubernetes is measured by multiple nodes, SLO, number of service and deployment, tenancy and platform team; check for pre-requisites and low-risk pilot…
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Docker and DevOps
20 articlesShowing 1–12
Docker Compose vs. Kubernetes: Which Is Better for a Startup?
Compose for simple deployment of single servers and Kubernetes for real needs of multi-node and orchestration; compare team cost, HA, rollout, state and growth.
How Docker Networking Works
Docker Network manages container connectivity, DNS service name, bridge, port publishing and frontend/backend separation; see path errors and security errors.
Why Does a Docker Container Keep Restarting?
For containers that are constantly restarted, check the restart count, exit code, OOMKilled, previous log, command, secret, permission and dependency without deleting the…
How Docker Restart Policies Work
The Restart Policy specifies what Docker does after the container is removed or the daemon restarted. Learn the differences between no, on-failure, always and…
What Is a Docker Healthcheck and How Should You Design One?
Healthcheck measures the response capacity of the container with a command. See process differences, readiness and dependency, interval/timeout/retries settings, and…
Why Do Docker Logs Fill the Server Disk?
Excessive program output and logging driver without rotation can fill the disk. Set active driver, log storm cause, max-size/max-file, retention and warning in principle.
How to Reduce Docker Image Size Without Breaking Runtime
Reduce the size of the Docker image by checking the layers, small context, multi-stage build, production dependency, and appropriate base without removing the necessary…
Why Does Docker Fill the Server Disk?
Disk decoder usage can be image, container layer, log, volume, or build cache. First, find the location and owner, and then proceed with the exact backup and target.
How to Back Up Docker Volumes Safely
To backup Volume, first specify the data type and consistency; save, encrypt, and restore the database with native tools and files with pause or controlled snapshot.
What Is a Docker Volume and When Should You Use One?
Volume keeps data outside the written layer container. Check the differences between volume, bind mount and tmpfs, permissions, lifecycle, performance and selection criteria.
How to Manage Docker Secrets from Build to Runtime
Separate Docker secrets from code and images, install them temporarily in BuildKit, add them to the service in Compose, and rotate, audit, and respond to disclosure.