Failure Modes
A failure mode refers to a specific type of problem or failure status that may occur during application running. Build a rich failure mode library and formulate corresponding prevention and recovery measures to help design a more highly available application system. By identifying potential faults, you can perform routine drills to verify whether the fault recovery measures and fault impacts meet the expectations and prepare for better response to various challenges.
Scenarios
You can analyze the possible fault points of an application, create a failure mode by describing the fault occurrence conditions, fault symptoms, and customer impacts, and apply the failure mode to routine chaos drills.
Precautions
Check whether the enterprise project, application, event level, and scenario category of the failure mode are correct.
Procedure
- Log in to COC.
- In the navigation pane on the left, choose Resilience Center > Chaos Drill. On the displayed page, click Risk Management Tasks, and click Failure Modes. On the displayed page, click Create Failure Mode.
Figure 1 Failure Modes
- Enter the failure mode information by referring to Table 1.
Figure 2 Creating a failure mode
Table 1 Failure mode parameters Parameter
Description
Failure Mode
Custom failure mode name
Enterprise Project
Enterprise project to which the failure mode resource belongs. default is the preset value.
Application
Application to which the drill target belongs
Incident Level
For details about the incident level, see Creating an Incident.
Source
Including Failure modes detected proactively and Existing failure modes.
Contingency Plan Available
Yes or No. The default value is Yes.
Contingency Plan Available
Select a contingency plan from the drop-down list box. If no plan is available, create one. For details, see Emergency Plan.
Scenario Category
Failure scenario, including redundancy, disaster recovery, overload, configuration, and dependency
Occurrence Conditions
Possible conditions that cause the failure
Fault Symptom
Service symptom when the failure occurs
Impact on Customer
Failure impact on customers
- Select whether a contingency plan is provided. If you select Yes, select a contingency plan name from the drop-down list. If no contingency plan is available, create a contingency plan and click OK.
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