Running Elasticsearch cluster is not cheap, as it generally requires a couple of high spec servers to provides both performances and reliabilities. Below is a typical 3 nodes Elasticsearch cluster that is running on AWS: 3 nodes, one in each availability zone. each node is both master and data node, and it is formed by ec2 … Continue reading Run Elasticsearch Cluster on Spot Instances
Tag: Lambda
OpsGenie Schedule Generator
My new tool - Opsgenie schedule generator. It is a tool that can create Excel spreadsheet based on the Opsgenie schedule. And it also has a Lambda version, which allows you to deploy it with AWS API gateway, so you can have your RESTful API for your roster schedule. Note: In my practise, there are two … Continue reading OpsGenie Schedule Generator
Fault Tolerant VPN Solution on AWS
I worked with a project team to help them to improve their current VPN infrastructure on AWS. They have 3 VPN EC2 instances, let's call them VPN01, VPN02 and VPN03. They are all OpenVPN Access Server, VPN01 and VPN02 both have 10 concurrent sessions license, and in availability a and b respectively. VPN03 only has … Continue reading Fault Tolerant VPN Solution on AWS
Jackie Chen's IT Workshop 