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About RightLink 6

Overview

RightLink is the agent installed on every server running in RightScale and it supports the latest automation and monitoring features. It uses HTTPS as its RightNet communication mode and relies on Chef for configuration. RightLink is preinstalled on all RightImages (Version 5 and above) published by RightScale.

With RightLink 6, you can use custom images within RightScale to receive the same functionality as you would with RightImages. Additionally, you can use RightScale more easily in your private cloud with operating systems that we support but cannot distribute, such as Microsoft Windows® and Red Hat Enterprise Linux (RHEL).

For a list of all the new features added to RightLink in version 6.0 (as well as bug fixes), refer to the RightLink 6.1 Release Notes on GitHub.

Important!  Custom images that are built with RightLink 5.9 and higher are fully supported by RightScale. If you choose to create your own custom images instead of using the ones included in ServerTemplates published by RightScale, please refer to the following documents for best practices and recommended procedures. See Create RightLink 5.9 Enabled Images or Create RightLink 6 Enabled Images.

Advantages of RightLink

There are several general advantages of using RightLink-enabled RightImages (Version 5 RightImages and later).

  • Performance - Real-time execution of scripts as opposed to periodic polling. Loosely defined, the technology is closer to push technology than pull (polling).
  • Discovery - RightLink supports our machine tags, allowing discovery amongst Servers that can be used very pragmatically. For example, application Servers that automatically register with the load balancer upon boot, or slaves locating a master based on machine tags.
  • Robustness - The architecture that supports RightLink is more reliable because it does not rely on SSH to perform crucial system tasks. The v5 architecture uses a reliable queuing service so no messages are dropped.

RightLink 6 Features

Features of version 6 include:

  • Support for integration with VMware vSphere cloud using the RightScale cloud appliance for vSphere.
  • Updated to use Ruby 1.9 and Chef 11. This supports better integration with community cookbooks.
  • You can bring your custom images to RightScale
  • You can build custom images for any supported operating system and cloud, instead of relying exclusively on RightScale-published RightImages.
  • Full source packages for RightLink are provided for RPM and deb formats. You can easily rebuild RightLink to support alternate distros, such as Open SUSE 13.
  • You can bundle running cloud instances into RightScale-enabled images.
  • Firewall friendliness: Uses HTTPs for communication with the RightScale core site. Mirrors, NTP, and patching will now also go through island load balancers.
  • Modified NTP resolution algorithm where instances attempt to perform an NTP time sync with RightLink before they enroll with RightNet brokers. See NTP Time Synchronization.

Supported Clouds

RightLink 6 Supports the following cloud types:

Cloud Type Nickname Support package
Microsoft Azure azure rightlink6-cloud-azure
Citrix CloudStack/CloudPlatform cloudstack rightlink6-cloud-cloudstack
Amazon EC2 ec2 rightlink6-cloud-ec2
Google Compute Engine gce rightlink6-cloud-gce
OpenStack openstack rightlink6-cloud-openstack
RackSpace (OpenCloud) rackspace rightlink6-cloud-rackspace
SoftLayer softlayer rightlink6-cloud-softlayer
vSphere Cloud Appliance (VMware) vsphere rightlink6-cloud-vsphere

Supported Platforms

RightLink 6 is built for and tested with the following platforms. An additional column ("Known working/best effort") is provided for platforms known to work but are not supported officially; RightSale will provide a best-effort in terms of defect resolution on the specified platforms..


Note: Only 64 bit packages are built and published by RightScale.

 

Platform Release Supported by RS Tested by RS Known working/best effort
Ubuntu 14.04 (trusty) X X Ø
Ubuntu 12.04 (precise) X X Ø
CentOS 6 and Red Hat Enterprise Linux 6 X X Ø
CentOS 7 and Red Hat Enterprise Linux 7 X X Ø
SUSE Linux Enterprise Server 11 SP3 X X Ø
SUSE Linux Enterprise Server 11 SP2 X X Ø
OpenSUSE 13 Ø Ø X
Debian 7 (wheezy) Ø Ø X
Debian 6 (squeeze) Ø Ø X
Microsoft Windows 2012R2 X X Ø
Microsoft Windows 2012  X X Ø
Microsoft Windows 2008 R2 SP1 X X Ø
Microsoft Windows 2008 (other versions) X Ø Ø
Microsoft Windows 2008 (all versions) X Ø Ø

Legend:
X - Supported feature
Ø - Not supported

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Last modified
15:53, 4 Dec 2014

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