Docker Compose, Docker Stack and Docker Swarm

This posting covers some basic docker orchestration tools. Docker Compose Docker Compose’s predecessor is a tool called Fig developed by Orchard, which was acquired by Docker in 2014, with Fig renamed to Docker Compose. Docker Compose is the official container management tool. It is essentially a python script that parses yaml file, to make Docker … Read moreDocker Compose, Docker Stack and Docker Swarm

AWS Certified DevOps Engineer Exam Tips

The last 30 days have been exhausting for me. I studied hard on the new AWS Certified DevOps Engineer exam and thank goodness I passed (750 out of 1000 is required). This was the hardest professional certification I ever worked on. The exam was re-launched recently in March 2019 so there is still a shortage … Read moreAWS Certified DevOps Engineer Exam Tips

My thoughts on CI/CD

This is a huge topic that is impossible to cover in a posting. To make it worse, they become a buzz word that every body use to mean different things. AWS has a good white paper on CI/CD but there are too much focus on its own hosted services along the way. Otherwise it is … Read moreMy thoughts on CI/CD

The IT journey across industries

Back in the days, in the absence of handy automation tool, I used to install 40+ servers all manually, following exact same sequence of steps 40 times. I did not neglect the existence of automation tools. At the get-go, I estimated the efforts between sorting out automation and just plowing through the install manually. The … Read moreThe IT journey across industries