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Diffstat (limited to 'docs/development')
| -rw-r--r-- | docs/development/design/design.rst | 65 | ||||
| -rw-r--r-- | docs/development/design/index.rst | 10 | ||||
| -rw-r--r-- | docs/development/design/versioning.rst | 22 | ||||
| -rw-r--r-- | docs/development/overview/overview.rst | 15 |
4 files changed, 107 insertions, 5 deletions
diff --git a/docs/development/design/design.rst b/docs/development/design/design.rst index 6717fd7..d0f2f45 100644 --- a/docs/development/design/design.rst +++ b/docs/development/design/design.rst @@ -4,7 +4,70 @@ :depth: 3 :local: +.. This work is licensed under a Creative Commons Attribution 4.0 International +.. License. +.. http://creativecommons.org/licenses/by/4.0 +.. (c) Cisco Systems, Inc + + Introduction ----------------- +------------ + +NFVbench can be decomposed in the following components: +- Configuration +- Staging +- Traffic generation +- Traffic generator results analysis + +Configuration +------------- +This component is in charge of getting the configuration options from the user and consolidate them with +the default configuration into a running configuration. + +default configuration + user configuration options = running configuration + +User configuration can come from: +- CLI configuration shortcut arguments (e.g --frame-size) +- CLI configuration file (--config [file]) +- CLI configuration string (--config [string]) +- REST request body +- custom platform pluging + +The precedence order for configuration is (from highest precedence to lowest precedence) +- CLI confguration or REST configuration +- custom platform plugin +- default configuration + +The custom platform plugin is an optional python class that can be used to override default configuration options +with default platform options which can be either hardcoded or calculated at runtime from platform specific sources +(such as platform deployment configuration files). +A custom platform plugin class is a child of the parent class nfvbench.config_plugin.ConfigPlugin. + + +Staging +------- +The staging component is in charge of staging the OpenStack resources that are used for the requested packet path. +For example, for a PVP packet path, this module will create 2 Neutron networks and one VM instance connected to these 2 networks. +Multi-chaining and VM placement is also handled by this module. + +Main class: nfvbench.chain_managers.StageManager + +Traffic Generation +------------------ +The traffic generation component is in charge of contrilling the TRex traffic generator using its python API. +It includes tasks such as: +- traffic check end to end to make sure the packet path is clear in both directions before starting a benchmark +- programming the Trex traffic flows based on requested parameters +- fixed rate control +- NDR/PDR binary search + +Main class: nfvbench.traffic_client.TrafficClient + +Traffic Generator Results Analysis +---------------------------------- +At the end of a traffic generation session, this component collects the results from TRex and packages them in a format that +is suitable for the various output formats (JSON, REST, file, fluentd). +In the case of multi-chaining, it handles aggregation of results across chains. +Main class: nfvbench.chain_managers.StatsManager diff --git a/docs/development/design/index.rst b/docs/development/design/index.rst index a8093cb..c54888a 100644 --- a/docs/development/design/index.rst +++ b/docs/development/design/index.rst @@ -1,11 +1,15 @@ -.. To be decided +.. This work is licensed under a Creative Commons Attribution 4.0 International +.. License. +.. http://creativecommons.org/licenses/by/4.0 +.. (c) Cisco Systems, Inc -============================================= +=============================== OPNFV NFVbench Euphrates Design -============================================= +=============================== .. toctree:: :maxdepth: 2 design + versioning ndrpdr diff --git a/docs/development/design/versioning.rst b/docs/development/design/versioning.rst new file mode 100644 index 0000000..870ed86 --- /dev/null +++ b/docs/development/design/versioning.rst @@ -0,0 +1,22 @@ + +.. This work is licensed under a Creative Commons Attribution 4.0 International +.. License. +.. http://creativecommons.org/licenses/by/4.0 +.. (c) Cisco Systems, Inc + +Versioning +========== + +NFVbench uses semver compatible git tags such as "1.0.0". These tags are also called project tags and applied at important commits on the master branch exclusively. +Rules for the version numbers follow the semver 2.0 specification (http://semver.org). +These git tags are applied indepently of the OPNFV release tags which are applied only on the stable release branches (e.g. "opnfv-5.0.0"). + +In general it is recommeneded to always have a project git version tag associated to any OPNFV release tag content obtained from a sync from master. + +NFVbench Docker containers will be versioned based on the OPNF release tags or based on NFVbench project tags. + + + + + + diff --git a/docs/development/overview/overview.rst b/docs/development/overview/overview.rst index 2b86da3..792d50f 100644 --- a/docs/development/overview/overview.rst +++ b/docs/development/overview/overview.rst @@ -9,5 +9,18 @@ Introduction ---------------- -Describing the components and behaviours in a manner that helps people understand the platform and how to work with it +NFVbench is a python application that is designed to run in a compact and portable format inside a container and on production pods. +As such it only uses open sourec software with minimal hardware requirements (just a NIC card that is DPDK compatible). +Traffic generation is handled by TRex on 2 physical ports (2x10G or higher) forming traffic loops up to VNF level and following +a path that is common to all NFV applications: external source to top of rack switch(es) to conpute node(s) to vswitch (if applicable) +to VNF(s) and back. +Configuration of benchmarks is through a hierarchy of yaml configuraton files and command line arguments. + +Results are available in different formats: +- text output with tabular results +- json result in file or in REST reply (most detailed) + +Logging is available in a log file. + +Benchmark results and logs can be optionally sent to one or more remote fluentd aggeregators using json format. |