MongoDB failed to lock file on OpenShift using NFS file system

Summary This page documented the investigation of an issue: MongoDB Pod failed to lock mongod.lock on OpenShift/OKDv4. The problem was because NFSv3 was used to mount between OKDv4 Worker Nodes to the NFS server. MongoDB used internally flock/fcntl to lock the mongod.lock file descriptor. In a network file system like NFSv3, locking support was required … Continue reading MongoDB failed to lock file on OpenShift using NFS file system

The Collector’s Fallacy  – Zettelkasten Method

On researching taking notes, speciffically the Zekkelkasten method, I learned The Collector's Fallacy. In its essenses: Saving links, copying or just reading a material does not mean that you have consumed the knowledge. You may have increased the knowlege for a short time, but it will fade away very soon after that. By taking notes, … Continue reading The Collector’s Fallacy  – Zettelkasten Method