A database that takes forty seconds to initialise is marked unhealthy during every normal start, which trains everyone to ignore health status. start_period is the flag that makes…
Compose file 3.8 arrived with 19.03 and its only widely useful addition is a config format the CLI can validate, which is a smaller change than the version…
A compose file with variable substitution, an override file and an extends is not readable by inspection, and the difference between what you think it says and what…
A healthcheck describes how to tell whether this particular software is working, which is knowledge that belongs with the image rather than with each stack that uses it.…
Apache, Nginx, PHP, MySQL, Redis, Beanstalkd and a mail catcher, on a laptop. Onboarding measured in minutes rather than days, and what it costs to run.
A staging database restored from production contains real addresses, and a queue worker that runs on it sends real email to real customers. It happens to everybody once.…
Seven services with the same logging configuration, the same restart policy and the same network means the same six lines seven times, and the one that gets missed…