I have installed Centos 7 in Vmware WorkStation. I tried to install few new packages using yum install. However, I was getting error “Could not resolve host: mirrorlist.centos.org Centos 7″ Possible Reason for the issue and Resolution. 1. Ethernet Interface is disabled. Check ethernet status, if its disconnected then you need to enable it. Steps…
What is Site Reliability Engineer (SRE) Role? Site Reliability Engineering (SRE) is a discipline that incorporates aspects of software engineering and applies them to infrastructure and operations problems. The main goals are to create reliable, efficient, and scalable software systems. According to Ben Treynor, founder of Google‘s Site Reliability Team, SRE is “what happens when…
Regular Expression Reference 1) Write a regular expression to match pattern in email. e.g match -eu before @ in email. Regex : /.*-eu@gmail.com/g 2) Meta Character Reference
How to install Maven on Windows 10 In order to install maven on a Windows machine you will need to install JDK first as Maven is a Java based tool. If you are installing Maven 3.3 then you required JDK version 1.7 or above. If JDK is already installed on your Windows machine then you…
Shell Scripting Tutorial for Beginners I am sharing few beginner shell scripting reference that we need in day-to-day tasks. Local Variable in Shell Script We can create local variables in shell script by using the keyword local. #!/bin/bash HELLO=Hello function helloWorld { local HELLO=World echo $HELLO } echo $HELLO helloWorld echo $HELLO Conditional Statement 1)…
As we know DevOPS is a newly emerging term in IT field, which is nothing but a software development practice that emphasizes the collaboration and communication of both software developers and information-technology (IT) operation professionals. It helps us to delivering software product faster and lowering the failure rate of releases. There are lots of tools…
Continuous Integration Continuous Integration (CI) is a development practice that requires developers to integrate code into a shared repository several times a day. Each check-in is then verified by an automated build, allowing teams to detect problems early. By integrating regularly, you can detect errors quickly, and locate them more easily. Continuous Delivery Continuous Delivery…
Install Elasticsearch 5.0 on RHEL / CentOS This article will cover install Elasticsearch 5.x version on CentOS and RHEL distribution. Also guideline to change to Default Cluster and Index settings in Elasticsearch 5.x. So Let’s start with prerequisites Prerequisites: As per the recommendation Elasticsearch need 1.8.0_73 or later and only Oracle’s Java and the OpenJDK…
What is Logstash? Logstash is a data collection engine with real-time pipelining capabilities. You can use Logstash to collect your logs, parse them into your desirable format and store them for searching or monitoring for your application. Logstash latest version has more capabilities other than manage event and logs. Logstash has more than 200 plugins…
Create empty file in ansible Ansible Task to Create new file on remote machine, Validate and Copy Content on Remote Machine In this article I have covered create a new file on remote machine from ansible playbook, Write contend on new file from ansible , Copy file on remote machine using ansible playbook. We can use file,…
