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Understanding OPNFV

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Understanding OPNFV 82 The Doctor project contributed PushDriver and Doct or Servi ce Dri ver datasource drivers to Congress to enable the policy engine to evaluate events coming from the above-mentioned Monitor. Root Cause Analysis (RCA) – Update State – Notify Once the policy engine establishes that the failure is worth acting upon, multiple things needs to happen. First, the affected list of virtual machines, storage and ports has to be determined. Next, all affected physical and virtual resources have to be marked appropriately (e.g. Error, Suboptimal, Down state, and so on). Thereafter, alarm(s) have to be sent to the notification engine, and the data has to be made available to the user in an easy-to-understand visual form. The OpenStack Vitrage project does all of the above. Vitrage creates a topology graph, pulled from a variety of data sources, that builds the connections from physical to virtual resources to applications. Next the user needs to provide templates that describe how to react to events. A sample Vitrage template is shown below (source OpenStack Barcelona Presentation): - scenari o: conditi on: hi gh_cpu_l oad_on_host and host _cont ai ns _i nst ance acti ons: - acti on: acti on_t ype: raise_al ar m acti on_t ar get: tar get: i nst ance pr operti es: al ar m_na me: CPU perf or mance degradati on severit y: war ni ng - acti on: acti on_t ype: set _st at e acti on_t ar get: tar get: i nst ance pr operti es: st at e: SUBOPTI MAL Raise alarm on VM - scenari o: conditi on: hi gh_cpu_l oad_on_host and host _cont ai ns _i nst ances and al ar m_on_i nst ance acti ons: - acti on: acti on_t ype: add_causal _rel ati ons hi p acti on_t ar get: source: zabbi x_al ar m tar get: i nst ance_al ar m Add causal relationship - scenari o: conditi on: hi gh_cpu_l oad_on_host acti ons: - acti on: acti on_t ype: set _st at e Set host state

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