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Reading Time: 4 minutes Hi folks, in this blog, we will be discussing what challenges we face when we want to view logs with respect to metrics and how we can achieve this using Grafana, Loki, and Promtail. Problem Statement When using monitoring solutions like Grafana, Prometheus, Elatic Stack etc for our infrastructure, we have metrics and logs decoupled to an extent that it is very difficult to look Continue Reading
Reading Time: 3 minutes ELK Stack or more recently called Elastic Stack, is a combination of three open source projects – Elasticsearch, Logstash and Kibana – all developed by Elastic and used for storing and analyzing logs. Even though these are three separate products, they compliment each other to the extend that they have come to be recognised as one. Why Log Analysis? Before getting to know more about Continue Reading
Reading Time: 3 minutes Introduction Apache Flink is a framework and distributed processing engine for stateful computations over unbounded and bounded data streams. The design of Flink is such as to run in all common cluster environments, perform computations at in-memory speed and at any scale. There are two Flink’s clusters: Flink session cluster and Flink job cluster. A job cluster is a dedicated cluster that runs a single job. The job is part of Continue Reading
Reading Time: 3 minutes Hello guys, in this article, we will be looking how to deploy Elasticsearch cluster on Kubernetes on a cluster setup on Google Kubernetes Engine. We will be following these steps given below to successfully deploy Elasticsearch on Kubernetes:1. Setup Persistant Volume via Storage Classes2. Enable node discovery for Elasticsearch through Headless Service3. Deploy Elasticsearch cluster using StatefulSet Prerequisites Cluster setup on Google Kubernetes Engine with Continue Reading
Reading Time: 3 minutes Packaging can often be slow and Docker builds are no exception. Downloading and installing system and Python packages, compiling C extensions, building assets—it all adds up. In order to speed up your builds, Docker implements caching: if your Dockerfile and related files haven’t changed, a rebuild can reuse some of the existing layers in your local image cache. With regard to Docker itself, using it on Continue Reading
Reading Time: 3 minutes Hello readers, in this blog we will be looking at what are daemons and how can we create a custom daemons in our systems. Daemon is called as a type of program which quietly runs in the background rather than under the direct control of a user. It means that a daemon does not interact with the user. Systemd Management of daemons is done using systemd. It is Continue Reading
Reading Time: 3 minutes Hello guys, in this blog we will be discussing about what is jq and how to use it for reading and manipulating JSON data and files. What is JQ? jq is a lightweight and flexible command-line JSON processor. It is like sed for JSON data – you can use it to slice and filter and map and transform structured data with the same ease that Continue Reading
Reading Time: 7 minutes Introduction Python is a great flexible programming language that can be used in many situations. In this tutorial, we will focus primarily on it’s ability to enhance the Unix/Linux shell environment. Typically in Unix we will create “bash” shell scripts, but we can also create shell scripts using python, and it’s really simple! We can even name our shell scripts with the .sh extension and Continue Reading
Reading Time: 4 minutes Hi readers, in this blog we will be discussing about Ansible roles and the directory structure used in Ansible. Above all, we will be looking at what different directories in a role do and how they can be created. What are Ansible Roles? According to the official Ansible documentation ‘roles are ways of automatically loading certain vars_files, tasks, and handlers based on a known file Continue Reading
Reading Time: 3 minutes Hello readers, in this blog we will be looking at how to handle errors in Ansible Playbooks. There are multiple ways for doing the same and we will be looking at them and how to use it in our Playbook. By default, Ansible will check the return codes of commands and modules and it fails fast. This means that we will be forced to deal Continue Reading
Reading Time: 3 minutes Hello folks! In today’s HTTP request/response world, we may get different types of data from a client side application which we need to process and send an appropriate response. This may get a bit of a mess. To solve this, we can use the marshalling and unmarshalling feature of Akka-Http for easier conversion of theses data. In this blog, we will be looking how to Continue Reading
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Knoldus is the world's largest pure-play Scala and Spark company. We modernize enterprise through cutting-edge digital engineering by leveraging Scala, Functional Java and Spark ecosystem. Our mission is to provide reactive and streaming fast data solutions that are message-driven, elastic, resilient, and responsive.
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