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The musical term "orchestration" is not without reason accepted in the IT environment. What is an orchestra? A multitude of musicians playing their parts under the direction of a conductor.
Now imagine a company where digital product development plays a key role in the life of the business. It doesn’t matter who the consumer of the development result is – the employees of this company or its clients.
To reduce the time-to-market of digital products, reduce costs and constantly increase competitiveness, it is necessary to implement modern methods and solutions for organizing the development process - containers, microservice approach, DevOps practices.
In this article, we will talk about what orchestrators are, who might benefit from these systems, and wordpress web design agency who, on the contrary, should abandon them in favor of manual tools.
Why Container Orchestrators
You've probably guessed from our analogy with the world of music that the orchestrator's job is to organize the management of microservice applications. Each individual microservice has its own model and data set. From a development and deployment perspective, microservices are autonomous and therefore, in most cases, are placed in their own containers.
Thus, the larger the microservice application, the more containers it has. And in some cases, managing them manually is difficult and unproductive.
Orchestration systems come to the aid of developers and administrators: they are able to automate the management of the life cycle of such applications. In addition, with the help of orchestrators, it is possible to automate and simplify many routine processes.
Tasks of orchestrators
Below is a list of tasks that are set for orchestrators:
Preparation and deployment of infrastructure
Includes installation of applications ( and their dependencies ) on a pre-prepared ( equipped with the necessary services, libraries, etc. ) server.
Planning and configuration
This refers to configuring processes running on the server using schedulers. The approach is valid for both monoliths and microservices. The convenience is that orchestration systems include the necessary set of scheduler programs in advance, so there is no need to install them manually.
Resource allocation
Deploying a service or application involves allocating server resources such as RAM and CPU time. The orchestrator allows you to set threshold and normal operating parameters and keep applications running with minimal overhead.
Scaling containers to match workloads
Additional comments are unnecessary here: too much resource allocation is unprofitable, too little can cause delays and failures in the application. "Smart" scaling based on real load allows you to reduce inefficient spending to a minimum, while maintaining the functionality of the application at the proper level.
Load balancing
Balancers allow you to distribute the load on the server part and the containers located on it. This reduces power consumption, normalizes the throughput on the channel and increases the response speed.
Routing
Routing refers to the configuration of traffic distribution from the global Internet to the internal resources of the application.
Monitoring the status of containers
With the help of monitoring, you can track containers and their parameters in real time: when, where and which of their images were launched, which commands are used inside the containers, where resource consumption is inflated, etc.
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