59,514 research outputs found
CloudHealth: A Model-Driven Approach to Watch the Health of Cloud Services
Cloud systems are complex and large systems where services provided by
different operators must coexist and eventually cooperate. In such a complex
environment, controlling the health of both the whole environment and the
individual services is extremely important to timely and effectively react to
misbehaviours, unexpected events, and failures. Although there are solutions to
monitor cloud systems at different granularity levels, how to relate the many
KPIs that can be collected about the health of the system and how health
information can be properly reported to operators are open questions. This
paper reports the early results we achieved in the challenge of monitoring the
health of cloud systems. In particular we present CloudHealth, a model-based
health monitoring approach that can be used by operators to watch specific
quality attributes. The CloudHealth Monitoring Model describes how to
operationalize high level monitoring goals by dividing them into subgoals,
deriving metrics for the subgoals, and using probes to collect the metrics. We
use the CloudHealth Monitoring Model to control the probes that must be
deployed on the target system, the KPIs that are dynamically collected, and the
visualization of the data in dashboards.Comment: 8 pages, 2 figures, 1 tabl
Understand Your Chains: Towards Performance Profile-based Network Service Management
Allocating resources to virtualized network functions and services to meet
service level agreements is a challenging task for NFV management and
orchestration systems. This becomes even more challenging when agile
development methodologies, like DevOps, are applied. In such scenarios,
management and orchestration systems are continuously facing new versions of
functions and services which makes it hard to decide how much resources have to
be allocated to them to provide the expected service performance. One solution
for this problem is to support resource allocation decisions with performance
behavior information obtained by profiling techniques applied to such network
functions and services.
In this position paper, we analyze and discuss the components needed to
generate such performance behavior information within the NFV DevOps workflow.
We also outline research questions that identify open issues and missing pieces
for a fully integrated NFV profiling solution. Further, we introduce a novel
profiling mechanism that is able to profile virtualized network functions and
entire network service chains under different resource constraints before they
are deployed on production infrastructure.Comment: Submitted to and accepted by the European Workshop on Software
Defined Networks (EWSDN) 201
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