Jelastic Paas

How to do Node.js Hosting from Jelastic PaaS?

If we want to run a Node.js application successfully, we must set an appropriate environment. For this, we will have to use the intuitive and powerful Topology Wizard.

Move to Node.js tab >> Select the latest engine version >> Add any required software stack.

As per your needs, you can adjust the parameters like cloudlets and nodes count, and Public IPv4 or IPv6.

Node.js Package Managers

Each NodeJS application server has a built-in development tool known as Package Manager, which works to provide automation in the installation, removal, update, configuration, and standardization processes.

Jelastic can support two types of package managers:

• First is npm that manage your all project requirements by handling the installation of the additional modules, packages, and ready-to-use applications
• Second is the yarn that operates the same npm requirements but provides high speed, better reliability, and ease to convenience

For the Node.js applications servers, npm is the first preferences but it can be switched to yarn, anytime. To do so, you need to access the container variables frame, then set the PACKAGE_MANAGER value to npm or yarn.

Node.js Process Managers

Process Managers provide the ability to control application lifecycle, monitor running services and maintain the project operability. Jelastic PaaS provides support of the following process managers for the NodeJS stack:

npm - initiates and configures multiple processes

pm2 - provides a huge variety of application management features, including the launched Node.js processes monitoring

forever - allows running your Node.js processes continuously and automatically restarting them upon failure

supervisor - monitors running applications for changes and automatically restarts required ones to keep them up-to-date

Users can choose the necessary process manager during container redeployment or by adjusting the PROCESS_MANAGER variable (using forever, npm, pm2 or supervisor as value, container restart is needed to apply new options).

Automatic Vertical Scaling

Jelastic PaaS dynamically provide the precise quantity of resources (RAM and CPU) required by way of your nodes in line with the present-day load with no manual intervention required.

As a result, you never overpay for unused resources and store your time because the platform eliminates the need to handle the load-related adjustments or architectural changes.

You just need to set the top cloudlets restriction (every one equals to 128 MiB of RAM and four hundred MHz of CPU) in your NodeJS utility server and the whole thing else will be dealt with via the platform automatically.

Refer to the automated vertical scaling documentation for extra information.

Manual Horizontal Scaling

To scale out/in NodeJS utility servers, you want to get entry to the topology wizard and click on the +/- buttons in the Horizontal Scaling phase to set the desired variety of nodes.

Also, beginning with the five.five platform version, you can adjust the preferred scaling mode:

• Stateless - concurrently creates all-new nodes from the base photograph template
• Stateful - sequentially copies document gadget of the master box into the new nodes

The most quantity of the same-type servers within an unmarried surroundings layer relies upon a specific hosting provider setting (usually this restrict stands for 16 nodes and can be enlarged by sending the correct request to support).

Also, for the proper request distribution, a load balancer instance is automatically introduced upon NodeJS server scaling. Refer to the horizontal scaling documentation for more details.

Automatic Horizontal Scaling

Access the environment Settings > Monitoring > Auto Horizontal Scaling segment to installation special tunable triggers, which allow to increase or decrease the range of nodes because of the application load.

Configure the kind of aid to be monitored (CPU, RAM, Network, Disk) and the exact circumstance of scaling. Learn greater approximately computerized horizontal scaling in the linked document.

In addition, hosting at Jelastic allows the use of different inbuilt equipment and features, for example:

• Custom or Jelastic SSL
• Public IPv4 and IPv6
• A wide range of managed software stacks
• Container firewalls, endpoints, and environment isolation
• User-friendly UI and direct SSH access for management
• Open API and Cloud Scripting for automation
• Pay-as-you-use pricing model
• Collaboration functionality for teamwork
• Multi-cloud distribution

As you can see, Jelastic PaaS is suitable to provide all the necessary conditions for a smooth Node.js hosting! You can get your free trial account from us, Everdata!