Đạt Trần

I build softwares that solve problems. I also love writing/documenting things I learn/want to learn.

Creating Kubernetes Replication Controller in 5 Minutes

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Let’s look at the following diagram to create Kubernetes Replication Controller: What to remember when creating ReplicationController apiVersion: v1 You can define number of replicas, selector and template under spec spec->template has its own spec section along side metadata You specify containers’ related attributes under template‘s spec Create ReplicationController YAML file example Đạt TrầnI build … Read more

PostgreSQL Docker client-only Image

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Update 2025 Please check out the new client here that supports a wide range of PostgreSQL version: https://hub.docker.com/r/dattm24/postgresql-client if you want to customize, here is the repo: https://github.com/datmt/docker-clients/tree/main/postgresql-client Recently I had to write a bash script to truncate all tables on a test database server. Using PgAdmin is a real pain since I have a … Read more

Install Kubernetes Cluster With Kubeadm On Ubuntu Step By Step

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I’ve been trying installing a Kubernetes cluster for while following the official documentation without any success. It turned out the official documentation was missing some important steps (or they put the missing steps else where I couldn’t find). Anyways, if you are struggling to get a Kubernetes up and running, this step by step tutorial … Read more