Jelastic 6.0

This document is preliminary and subject to change.

In this document, you will find all of the new features, enhancements and visible changes included to the Jelastic PaaS 6.0 release.

Windows VMs Support

Implemented support of the traditional virtual machines with Windows workloadsLearn more

Non-Downgradable Software Stacks

Added functionality for disabling redeployment to a version lower than the current oneLearn more

Traffic Distributor Package Update

Updated the Traffic Distributor package to integrate an ability to connect backends via SSL and to add some optimizationsLearn more

No Free Disk Error Clarification

Separated errors for the disk space shortage within a container and on a hardware hostLearn more

API Changes

Listed all the changes to the public Jelastic API in the current releaseLearn more

Software Stack Versions

Actualized list of supported OS templates and software stack versionsLearn more

Fixes Compatible with Prior Versions

Bug fixes implemented in the current release and integrated to the previous Jelastic versions through the appropriate patchesLearn more

Bug Fixes

List of fixes applied to the platform starting from the current releaseLearn more

Windows VMs Support

Starting with the Jelastic 6.0 release, Windows VM support is implemented for the platforms. The feature availability depends on each particular service hosting provider as it requires additional configurations in order to be set up on a platform.

VM hosting at Jelastic PaaS is provided in a familiar way to the regular containers. Windows VM instances can be added via the topology wizard under the VPS section. However, there are a few peculiarities for virtual machines:

  • a small VM label is displayed on the stack image for better clarity
  • only fixed resources based on the several predefined plans (licenses) are available; the exact sizes and prices can vary for different platforms
  • the horizontal scaling and IPv6 options are not available in the current implementation

Windows VM support

Virtual machines are visually highlighted in the dashboard via the dedicated VM label and unique resource Usage icon (instead of the regular cloudlets-shaped one). For Windows VM, the following management options are available:

  • Add-Ons - installs available pluggable modules (e.g. Env Start/Stop Scheduler)
  • Restart Node(s) - restarts a VM
  • Statistics - shows real-time and historical VM’s resource consumption
  • Remote Desktop - provides RDP-related functionality for Windows VM
  • Additionally - lists additional options (if any)

Windows VM in dashboard

Regardless of the actual consumption, VM Resources (vCPU and Memory) cost is always fixed, predefined by resource plan (license). Disk, Network, and Options are billed separately, just as for containers.

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Non-Downgradable Software Stacks

Jelastic PaaS provides out-of-the-box support for multiple software stacks to build topologies that meet the most demanding users' requirements. Moreover, most of the stacks have at least a few releases to choose from. These versions can be freely switched at any time due to the Containers Redeploy feature.

However, not all of the software solutions provide backward compatibility. If there are substantial differences between the releases, downgrading a software version can result in unforeseen problems. In the current Jelastic 6.0 upgrade, all the stacks were analyzed to locate those vulnerable to the issue and explicitly restricted from downgrading during the redevelopment process.

non-downgradable software

Currently, redeployment to the lower version is forbidden on the following stacks:

  • MariaDB
  • MongoDB
  • MySQL
  • Percona
  • PostgreSQL
  • Couchbase

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Traffic Distributor Package Update

Traffic Distributor is a package powered by Jelastic, which helps control traffic flow between environments. It is an easy-to-manage solution suitable for multiple use cases and hosting scenarios (Blue-Green Deploy, Failover Protection, A/B Testing). In the present 6.0 Jelastic upgrade, Jelastic Team integrated the ability to choose between proxying traffic to backends over SSL or without it. The corresponding HTTPS config within the Traffic Distributor package UI is shown in the image below:

traffic distributor package

Also, the default value for the proxy_connect_timeout setting in Traffic Distributor was increased to 60 seconds to reduce the number of reconfigurations due to the false-positive backend failures. However, upon selecting the Failover routing method, this parameter is automatically changed to the 20 seconds value.

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No Free Disk Error Clarification

Jelastic PaaS has two types of the “No free disk space” error. The first one relates to the particular node and can be handled by the container owner. The second one reports the disk space shortage on the host (hardware server), which can only be resolved by the service hosting provider. In the present 6.0 upgrade, additional clarifications were added to separate such issues in the dashboard and provide correct resolution steps, i.e. either to increase disk space or contact support.

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API Changes

This information will be provided in the nearest future.

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Fixes Compatible with Prior Versions

This information will be provided in the nearest future.

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Software Stack Versions

The software stack provisioning process is independent of the platform release, which allows new software solutions to be delivered as soon as they are ready. Herewith, due to the necessity to adapt and test new stack versions, there is a small delay between software release by its respective upstream maintainer and integration into Jelastic PaaS.

The most accurate and up-to-date list of the certified software stack versions can be found on the dedicated documentation page.

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Bug Fixes

This information will be provided in the nearest future.

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