VNF components in OpenStack Tacker
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The document discusses the implementation of VNF components (vnfc) in Tacker, highlighting the advantages of using vendor-specific installation and the loose coupling they provide. It details various drivers for implementation, including cloud-init, heat software deployment, and SSH driver, noting their pros and cons. A demo is included to showcase the instantiation of VNF using different deployment methods, followed by an open discussion on improvements and future development.
VNF components in OpenStack Tacker
- 1. VNF Components in Tacker
- 2. Agenda Introduction Why VNFC ?? Different drivers to implement VNFC in Tacker. Quick Demo Open Discussion
- 3. Introduction ● VNF Provider models the VNF into various software components called as VNF Components. ● In the current state, Tacker depends on pre-built images in which Network function is embedded to build the VDUs. ● VNFs can be built from one or more VNFCs
- 5. Why VNFC ?? ● To use vendor specific installation procedures to build network function. ● Loose coupling between image and network function which avoid dependency on the underlying image. ● Easy to upgrade the VNF.
- 6. Different drivers to implement VNFC. 1. Cloud Init 2. Heat Software Deployment 3. SSH Driver
- 7. Cloud Init Tacker can leverage the Heat Software Config feature to achieve VNF components support in Tacker. Pros : Most of the cloud images have cloud-init installed. Cons : Hard to upgrade the VNFs on the fly.
- 8. Heat Software Deployment Tacker can leverage the Heat Software Deployment feature to achieve VNF components support in Tacker. Pros : Facilitates the upgrade functionality of the VNF. Cons : Heat agents needs to be installed as a prerequisite.
- 9. SSH Driver Introducing SSH driver in Tacker is nice to have feature where in tacker will have complete control on what needs to be installed as software component to bring up a VNFC. Pros : Facilitates the easy upgrade of the VNFs Cons : Credentials storage and security of VDU is pain area.
- 10. Demo 1. Instantiate a VNF using Heat Software Deployment. 2. Instantiate a VNF using SSH Driver.
- 11. Open Discussion - Improvements & suggestions. - Thoughts about other drivers. - Future scope of VNFC.