Step by step to install SSL cert for Crowd server


In this article, I am going to show you how to install or renew SSL certificate for Crowd server step by step. Note: In my example, my hostname is crowd.jackiechen.org (skip if you already have your new certificate) Run the following command to generate a csr file for your certificate, and you will get two … Continue reading Step by step to install SSL cert for Crowd server →

EC2 fleet at first glance


I was working on a project called SpotOn last year. The basically idea is to use Spot fleet whenever possible. If the pool size is lower than the threshold, then CloudWatch will trigger a Lambda function to scale up the on-demand EC2 to pick up the workloads. Check this out if you want to know … Continue reading EC2 fleet at first glance →

BitBucket Server Unreachable When Merge Pull Request


We recently had an BitBucket incident - one project team found that they are unable to merge the pull request after approval, and the server always returns an error message: So we checked their project repository, and here is something that astonish us: The repository have a few hundreds of branches. The size is nearly … Continue reading BitBucket Server Unreachable When Merge Pull Request →

ERR_CERT_COMMON_NAME_INVALID because of Subject Alternative Name missing


If you are seeing similar errors in Chrome as below, your private cert probably missed the SAN. Starting from Chrome 58, it validates the DNS against the SAN that is in the certificate. Here is the quote that I found "Certificates have two ways to express the domain/IP they're bound to - one which is … Continue reading ERR_CERT_COMMON_NAME_INVALID because of Subject Alternative Name missing →