👉 This writeup is part of “Elasticsearch Deploy Docs” series Install 📄 Office Docs Hardware Requirement 📄 Offical Docs Resource Minimum Recommended Memory 16 GB 64 GB CPU 8 Cores 16 Disk Depends Depends JDK Installation Pick JVM compatibility version with elasticsearch from here Install OpenJDK from here Download and install JDK 11 (Another guide here) $ apt-get install openjdk-11-jdk -y $ java -version openjdk version "11.0.6" 2020-01-14 OpenJDK Runtime Environment (build 11....

👉 This writeup is part of “Elasticsearch Deploy Docs” series Rolling Upgrade Elasticsearch 📄 Official Docs ⚠️ A rolling upgrade allows an Elasticsearch cluster to be upgraded one node at a time so upgrading does not interrupt service As of now, the current latest version of elasticsearch is v7.7.1. Below procedure is for rolling upgrade from 7.6.2=>7.7.1. 1. Divide the cluster into 2 groups Example node names carbon-x a. Non master-eligible nodes carbon-2 carbon-3 b....

👉 This writeup is part of “Elasticsearch Deploy Docs” series Kibana Installation 📄 Office docs ❗ The elasticsearch should be up and running before you start kibana installation procedure Install via apt-get from here As of today the kibana version is 7.6.2 $ wget -qO - https://artifacts.elastic.co/GPG-KEY-elasticsearch | sudo apt-key add - $ sudo apt-get install apt-transport-https $ echo "deb https://artifacts.elastic.co/packages/7.x/apt stable main" | sudo tee -a /etc/apt/sources.list.d/elastic-7.x.list $ sudo apt-get update && sudo apt-get install kibana Configure Kibana Refer kibana....

👉 This writeup is part of “Elasticsearch Deploy Docs” series Elastalert 📄 Official docs 📂 Official project Repo Elastalert is developed by Yelp written in python, queries docs in elasticsearch and send alerts depends on the rules. Since Elastalert is not part of Elasticsearch plugin, we can install it where ever we want to. Installation ❗ Refer elasticsearch-deploy-notes/elastalert for example config $ sudo apt-get install python3-pip $ sudo pip3 install elastalert $ sudo pip3 install -U PyYAML $ mkdir -p /opt/elastalert/rules ## Copy alert rules yaml files and config file to /opt/elastalert and /opt/elastalert/rules accordingly from this repo Recommended to create index in elasticsearch for elastalert to store metadata $ elastalert-create-index Elastic Version: 7....

Introduction Hello guys, today I came up with an interesting write-up, that is how to set up backup and restore with Velero on Kubernetes. A year back I worked on Strimzi Kafka, a deployment solution for deploying production-level Kafka on Kubernetes. Strimzi Kafka uses persistance volume(PV) as a disk which is a managed disk from a cloud provider(e.g. Azure, AWS, etc), but I couldn’t find a proper backup solution in order to configure PV backup and restore....

It has been 2 years since I wrote a new post. Due to busy work, moving to a new city, new jobs and getting married, I wasn’t able to keep up with writing blog posts. Finally, I’m back now, I have been thinking of changing blog themes for a long time. I spent some time exploring Jekyll themes and tried to modify them according to my requirements. As you can see here GitHub issue....

Looks like my blog posts are like Sherlock TV Show episodes, posting once in a while…anyways I’m back now. As you might know, GitHub recently launched GitHub Actions where people can automate workflows like build, test, and deploy code from GitHub. I have started reading docs a little bit, I have to admit, setting up workflows on GitHub Actions is not that hard. I can directly start creating a workflow from available workflow templates in the “Actions” tab....

Hallo alle zusammen, after a long time I’m writing this blog and I come with an interesting and long post I know what you are thinking, I steal Kelsey Hightower’s Kubernetes The Hard Way tutorial, but hey!, I did some research and try to fit K8s cluster(Multi-Master!) in a laptop with Docker as ‘CRI’ and Flannel as ‘CNI’. This blog post follows Kelsey Hightower’s Kubernetes The Hard Way, I highly recommend go through his repo....