AWSDevOps

AWS CodeDeploy Automatic Rollback using AWS Lambda

AWS Lambda is a compute service where we can upload our code to AWS Lambda and the service can run the code on our behalf using AWS infrastructure. AWS CodeDeploy is a service that automates code deployments to Amazon EC2 instances. AWS CodeDeploy makes it easier to rapidly release new features, helps to avoid downtime […]

AWSDevOpsTechnology

Tweaking Logstash’s S3 plugin to create folders in YYYY/MM/DD format on AWS S3

Logstash is a service that accepts logs from a variety of systems, processes it and allows us to index it in Elasticsearch etc which can be visualised using Kibana. Our DevOps engineers have been using Logstash S3 plugin which simply puts all data in a S3 bucket location. Since we have configured files to be created in every […]

AWSDevOps

Nagios Parser to configure Nagios configuration files through Chef

                                    Nagios Parser is a ruby library that can be used as a gem to parse values from the Nagios configuration files. These values can used as arrays or hashes to suit the use case. In this blog, […]

AWSDevOpsTechnology

Elasticsearch: Shard Filterting

Our cloud DevOps engineers have been using Elasticsearch on production environment for an e-commerce website for quite a while. The website has one admin server to manage activities such as adding new production, managing discounts on various items, fetching reports etc. We came across a requirement where downloading reports from admin server should not put extra load on […]

AWSDevOps

Setting Dynamic Project Description and Build Description in Jenkins

Jenkins is an open source tool designed to achieve continuous integration and continuous deployment. I came across a scenario where I have to show custom results after every build run in Jenkins. The build result produces dynamic values which are important to be identified before running the next build. For instance, I was creating a Jenkins job […]

AWSDevOpsTechnology

Elasticsearch Migration : Found to AWS EC2

Our DevOps team was using Found for one of our projects in the production environment. We have been facing a problem with found where it’s memory pressure frequently goes up and does not drop down so easily and until the time it remains up the Found was not able to serve the requests. Then, we decided to […]

AWSDevOpsTechnology

7 Things You Must Know About Load-Testing Using JMeter

Load testing is a must-do task for the infrastructure benchmarking. Performing load test in a proper way and analysis of load test results are the two main points which tells you the performance of your infrastructure. In this blog, I’ll be covering the key points which one should keep in mind to achieve the benefits […]

AWSDevOpsTechnology

JMeter Master Slave Setup In Multiple AWS Regions

In this blog, I’ll be demonstrating how to set up master-slave JMeter set up in multiple AWS regions. The aim is to generate load from multiple regions or multiple AZs in order to get a flavour of real load. For this purpose I am using EC2 servers, so a master server in Oregon region and […]

AWSTechnology

Convert Apache (x509 cert) SSL Certificate to Tomcat (Keystore)

When setting up SSL certificate for a website, we mainly use two types of SSL certificate one is x509 mostly used with applications support OpenSSL library and other is Keystore which is used with Java 1.6+ applications. Apache/Nginx uses x509 pem/crt files which is is very different than a Jetty/Tomcat (Java 1.6+) system that uses […]

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