The Incomplete Guide to Google Kubernetes Engine
Kubernetes is the de facto standard of container orchestration (deploying workloads on distributed systems). Google Kubernetes Engine (GKE) is the managed Kubernetes as a Service provided by Google...
View ArticleMongoDB operations: Replica Set
A replica set is a group of servers (mongod actually) that maintain the same data set, with one primary which takes client requests, and multiple secondaries that keep copies of the primary's data. If...
View ArticleIntegrate with Google Cloud API in Python
google-cloud, Python idiomatic clients for Google Cloud Platform services. There is an older Python library also officially supported by Google, google-api-python-client, which is in maintenance mode....
View Article碼天狗週刊 第 135 期 @vinta - Kubernetes, Python, MongoDB
本文同步發表於 CodeTengu Weekly - Issue 135。 The incomplete guide to Google Kubernetes Engine 根據前陣子搗鼓 Kubernetes 的心得寫了一篇文章，跟大家分享一下，希望有幫助。內容包含概念介紹、建立 cluster、新增 node pools、部署 ConfigMap、Deployment with...
View Article碼天狗週刊 第 140 期 @vinta - MongoDB, Kubernetes, NGINX, Google Cloud Platform, MySQL
本文同步發表於 CodeTengu Weekly - Issue 140。 MongoDB cookbook: Queries and Aggregations 在 Issue 130 有提到，MongoDB 的 Aggregation 其實很強大，尤其搭配 $elemMatch、$project、$let、$unwind 和 $facet 等功能，可以直接完成很多複雜的業務邏輯，不需要多寫一行...
View Articlemitmproxy: proxy any network traffic through your local machine
mitmproxy is your swiss-army knife for interactive HTTP/HTTPS proxy. In fact, it can be used to intercept, inspect, modify and replay web traffic such as HTTP/1, HTTP/2, WebSockets, or any other...
View ArticleMongoDB Change Stream: react to real-time data changes
What is Change Stream? Change Stream is a Change Data Capture (CDC) feature provided by MongoDB since v3.6. In layman's terms, it's a high-level API that allows you to subscribe to real-time...
View ArticleWrite next generation JavaScript with Babel 7
You write the next generation JavaScript code (ES6 or ES2018!) and using Babel to convert them to ES5. Even more, with the new @babel/preset-env module, it is able to intellectually convert your next...
View ArticleSetup Scalable WordPress Sites on Kubernetes
This article is about how to deploy a scalable WordPress site on Google Kubernetes Engine. Using the container version of the popular LEMP stack: Linux (Docker containers) NGINX MySQL (Google Cloud...
View Articlesysctl: Linux System Tweaking
sysctl is a command-lin tool to modify kernel parameters at runtime in Linux. ref: http://man7.org/linux/man-pages/man8/sysctl.8.html Usage List All Parameters $ sudo sysctl -a $ sudo sysctl -a | grep...
View ArticleHow HTTPS Works in Layman's Terms - TLS 1.2 and 1.3
HTTPS stands for Hypertext Transfer Protocol Secure, also commonly referred to as HTTP over TLS or HTTP over SSL. HTTPS is not a separate protocol from HTTP, it merely means using SSL/TLS to encrypt an...
View ArticleFix "No Access-Control-Allow-Origin header" for S3 and CloudFront
To avoid the error "No 'Access-Control-Allow-Origin' header is present on the requested resource": Enable CORS on your S3 bucket Forward the appropriate headers on your CloudFront distribution Enable...
View ArticleAmazon EKS: Create a Kubernetes cluster via ClusterConfig
Amazon Elastic Kubernetes Service (Amazon EKS) is a managed Kubernetes as a Service on AWS. IMAO, Google Cloud's GKE is still the best choice of managed Kubernetes service if you're not stuck in AWS....
View ArticleAmazon EKS: Setup kubernetes-external-secrets with AWS Secret Manager
kubernetes-external-secrets allows you to use external secret management systems, like AWS Secrets Manager, to securely add Secrets in Kubernetes, so Pods can access Secrets normally. ref:...
View ArticleThe Graph: Subgraph and GRT Token
The Graph is a protocol for indexing and querying Blockchain data. Currently, The Graph has the legacy version and the decentralized version. The legacy version is a centralized and managed service...
View ArticleAmazon EKS: Setup aws-load-balancer-controller for Kubernetes Ingress
AWS Load Balancer Controller replaces the functionality of the AWS ALB Ingress Controller. Install aws-load-balancer-controller Create an IAM OIDC provider for your cluster eksctl utils...
View ArticleAmazon EKS: Setup Cluster Autoscaler
The Kubernetes's Cluster Autoscaler automatically adjusts the number of nodes in your cluster when pods fail or are rescheduled onto other nodes. Here we're going to deploy the AWS implementation that...
View ArticleDeploy graph-node (The Graph) in Kubernetes (AWS EKS)
graph-node is an open source software that indexes blockchain data, as known as indexer. Though the cost of running a self-hosted graph node could be pretty high. We're going to deploy a self-hosted...
View ArticleDeploy Ethereum RPC Provider Load Balancer with HAProxy in Kubernetes (AWS EKS)
To achieve high availability and better performance, we could build a HAProxy load balancer in front of multiple Ethereum RPC providers, and also automatically adjust traffic weights based on the...
View Articlehardhat-deploy: Upgradeable Contracts with Linked Libraries
Library Assume ContractA imports LibraryA, when deploying ContractA, LibraryA is embedded into ContractA if LibraryA contains only internal functions. If LibraryA contains at least one external...
View Article
