Intro to os-faults library
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This document introduces os-faults, an OpenStack fault injection library that provides a unified API for performing destructive actions against OpenStack. It contains drivers for DevStack, Fuel, Libvirt and IPMI that allow faults to be injected into different OpenStack environments. The library models OpenStack services and nodes, and provides drivers for cloud management and power management. It can be used via a command line interface to inject faults like restarting or killing services, rebooting nodes, and disconnecting networks for testing high availability and reliability at scale.
![Human API
os-inject-fault [-c CONFIG] [-v] command
Service-oriented
● restart Keystone service
● kill nova-api service on one node
Node-oriented
● reboot one node with mysql service
● reset node-2.domain.tld node
Network-oriented
● disconnect management network on nodes
with rabbitmq service](https://image.slidesharecdn.com/os-faultsintro-161021143155/85/Intro-to-os-faults-library-6-320.jpg)
Intro to os-faults library
- 2. Why new lib? ● Unified API for performing destructive actions against OpenStack ● Extendable by drivers: DevStack, Fuel, Libvirt and IPMI already in ● Indispensable for HA testing and reliability scale testing
- 3. Objects ● Service — a software that runs in the cloud (e.g. nova-api) ● Nodes — representation of nodes that host OpenStack (e.g. bare-metal node)
- 4. Drivers ● Cloud management — an interface for accessing services running in the cloud ● Power management — an interface for node’s power operations
- 5. Config { 'cloud_management': { 'driver': 'devstack', 'args': { 'address': 'devstack.local', 'username': 'developer', } }, 'power_management': { 'driver': 'libvirt', 'args': { 'connection_uri': 'qemu+unix:///system', } } }
- 6. Human API os-inject-fault [-c CONFIG] [-v] command Service-oriented ● restart Keystone service ● kill nova-api service on one node Node-oriented ● reboot one node with mysql service ● reset node-2.domain.tld node Network-oriented ● disconnect management network on nodes with rabbitmq service