Murali Reddy created CLOUDSTACK-3998:
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Summary: explore simulator based fault injection for resiliency
testing
Key: CLOUDSTACK-3998
URL: https://issues.apache.org/jira/browse/CLOUDSTACK-3998
Project: CloudStack
Issue Type: Task
Security Level: Public (Anyone can view this level - this is the default.)
Components: Management Server
Reporter: Murali Reddy
Assignee: Murali Reddy
Fix For: Future
We could inject controlled faults in to simulated hypervisors, network
elements, storage resources, system VM's and try out tests for testing the
resiliency of CloudStack core.
For example, we can have test case (that runs only for Simulator) where we
instruct a simulated hypervisor resource to not to respond to ping from
CloudStack. Expected result would be core to treat hypervisor host as
disconnected and trigger HA enabled VM's.
My initial thinking is to expose set of test API from simulator plug-in that
would help inject transient/permanent/intermittent faults into simulated
resources like
- host that lost network connectivity with MS
- delayed response to agent commands (simulate overloaded hypervisor stacks
like XAPI, vCenter) and long running tasks like snapshots
- non responding edge service VM's
need to think little more on the failure categories and points, and best
abstract them test API so that can enable flexible and rich resilience tests.
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