To achieve a faster delivery of application, the right tools must be used in the DevOps environment. And there’s no single tool capable of fitting all your needs like server provisioning, automated builds, configuration management, code deployments and monitoring.
In this post, we’ll take a close look at the core tools used in a conventional DevOps environment.
This one’s a cloud-agnostic infra provisioning tool. Created by Hashicorp, this one’s written in Go.
Terraform supports almost all public and private cloud infrastructure provisioning. It does a great job in maintaining the steady state of your infrastructure through the use of a concept called state files unlike other configuration management tools.
It’s a ruby based configuration management tool.
Chef comes with the cookbook concept where you can code your infrastructure in a domain specific language with a bit of programming. It helps to provision virtual machines and configures them as per the rules of the cookbooks.
The cookbook can be found in the Chef supermarket.
Jenkins is widely considered the leading DevOps tool for monitoring the performance of repetitive jobs.
This one is a Java-based program for continuous integration and is often used in software development and testing.
Some of the primary features of this tool include:
- Continuous integration and delivery solution.
- Error checks on the fly.
- Built-in guide.
Vagrant is an exceptional tool for configuring virtual machines in a development environment.
This tool runs on top of VM solutions including the likes of VMware, VirtualBox, hyper-V,etc. This tool also uses a configuration file known as Vagrantfile, containing all the configurations needed for the VM.
The Docker tool helps in the execution of many applications on a single server without impacting one another.
This becomes possible as a result of isolated containers. Each container acts as an individual hardware setup to perform an application like the way it is done on a server.
Puppet offers end-to-end visibility and impeccable control over your application delivery.
Like other infrastructure orchestration tools, it was created to automate tasks for sysadmins. Now they donot have to spend ages provisioning, configuring, and maintaining server operations. Puppet is built with Ruby and uses an agent/master architecture.
It is widely considered as one of the simplest DevOps tools for automating infrastructure. It acts as an agentless configuration management tool that’s similar to Chef and Puppet.
Ansible was created to simplify complex management tasks. It is used to push changes and re-configure newly deployed machines. Moreover, its ecosystem is great for writing custom apps. Ansible modules (playbooks) are written in YAML format.
This platform is written in Python and allows users to script commands in YAML as an imperative programming paradigm.
- Prometheus & Alert Manager
Prometheus is an open source monitoring system. It is very light weight and specifically built for modern application monitoring. It supports Linux server and container monitoring.
It has out of the box support for Kubernetes and Openshift monitoring. Alert manager manages all the alerting setup for the monitoring metrics.
It is also a cloud-based (Saas) application and server monitoring solutions. You can monitor docker containers and other applications using Datadog.
Other tools worth considering:
Saltstack is a python-based opens configuration management tool.
Unlike chef and puppet, Saltstack supports remote execution of commands. Typicallyin puppet and chef, the code for configuration will be pulled from the server while, in Saltstack, the code can be pushed to many nodes simultaneously. The compilation of code and configuration is very fast in Saltstack.