We recently had a Vault issue. It is Vault with HA, the data store is Consul. One day the Consul cluster went offline, and we noticed there are a few OOM errors in the logs. The servers have been running fine and no stress on the memory utilisation for quite a while. There must be a … Continue reading A wrong way of using Vault
Personal Information Exchange (.pfx) file is a certificate format that contains both public cert and private cert, it is normally used in Windows platform. For example, IIS only supports to import certificate in pfx format. If you have you private key in PEM format, and public certificate in cert format (DER encoded). Then you use … Continue reading Generate pfx file for Windows box
I did not realize that Today is the 7 years anniversary of my tech blog 'Jackie Chen's IT workshop', until I received the achievement award from WordPress. It is interested to find out my first blog article is 'Allow owner to manage distribution list in Exchange 2010'. Not sure how many organisations are still running … Continue reading 7 Years Anniversary of the blog
I was a bit struggling to decide which watch to buy, Garmin or Apple Watch? If you are in the same dilemma, here is my suggestion: Garmin watch is a sports watch, while Apple watch is a smart watch but with sports features. If you are very sporty, Gamin watch might be a better choice. … Continue reading Apple Watch 3 Review
How Google Runs Production Systems? Table of Contents Table of Contents Foreword Preface Part I - Introduction Chapter 1 - Introduction Chapter 2 - The Production Environment at Google, from the Viewpoint of an SRE Part II - Principles Chapter 3 - Embracing Risk Chapter 4 - Service Level Objectives Chapter 5 - Eliminating Toil … Continue reading Site Reliability Engineering
Can AWS default VPC be deleted? I checked AWS documentations and it seems the following two are against each other. So I opened a ticket with AWS, and here is their answer: Technically yes, you can delete default VPC's and create a non-default VPC. Some services such as CloudFormer to create CloudFormation templates do searches … Continue reading Can AWS default VPC be deleted?
For the past 10 more years, I could not figure out why I ended up working in the IT industry. Until this morning when I was looking at my Nike hoodie which I had for years, I suddenly found the answer 🙂