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diff --git a/docs/A1-Appendix.rst b/docs/A1-Appendix.rst new file mode 100644 index 0000000..85f0717 --- /dev/null +++ b/docs/A1-Appendix.rst @@ -0,0 +1,49 @@ +Appendix +-------- + +A.1 Impact Analysis +~~~~~~~~~~~~~~~~~~~ + +Upgrading the different software modules may cause different impact on +the availability of the infrastructure resources and even on the service +continuity of the vNFs. + +**Software modules in the computing nodes** + +#. Host OS patch + +#. Hypervisor, such as KVM, QEMU, XEN, libvirt +#. Openstack agent in computing nodes (like Nova agent, Ceilometer + agent...) + +.. <MT> As SW module, we should list the host OS and maybe its + drivers as well. From upgrade perspective do we limit host OS + upgrades to patches only? + +**Software modules in network nodes** + +#. Neutron L2/L3 agent +#. OVS, SR-IOV Driver + +**Software modules storage nodes** + +#. Ceph + +The table below analyses such an impact - considering a single instance +of each software module - from the following aspects: + +- the function which will be lost during upgrade, +- the duration of the loss of this specific function, +- if this causes the loss of the vNF function, +- if it causes incompatibility in the different parts of the software, +- what should be backed up before the upgrade, +- the duration of restoration time if the upgrade fails + +These values provided come from internal testing and based on some +assumptions, they may vary depending on the deployment techniques. +Please feel free to add if you find more efficient values during your +testing. + +https://wiki.opnfv.org/_media/upgrade_analysis_v0.5.xlsx + +Note that no redundancy of the software modules is considered in the table. |