Avoid Blind Wait In DevOps Code

Occasionally DevOps code needs to check and wait status, before running further steps. For example, wait for service A to be up, then start service B; confirm TCP port is listening, then launch requests; etc.

For simplicity or time pressure, people usually use a blind wait like “sleep 10” to fix this. This is certainly not good enough. How we can improve this with affordable cost?

Blind Wait


6 False Negatives In Daily Deployment Test

After a lot of effort and communication, finally the system deployment works! To guarantee a smooth deployment anytime, we enforce daily deployment test as a next step.
Surprisingly daily deployment doesn’t always succeed like we expect, even if no major changes*. More interesting, many failed tests are kinds of false negatives. So what are the obstacles? And how we can avoid them?

False Alarm


Demo Jenkins: How I Enforce CI/CD

Lots of people are talking about CI/CD on the Internet. I wish I could learn the details what they really enforce? Quite disappointed, mostly I only see concepts, principles, and guidelines.

Yes, I know it depends on a lot of things. After supporting several projects, I DO believe there are some useful first-hand experience which are general and not that well-known. Enclosed is a Demo Jenkins.

Demo Jenkins