DevOps / AppDynamics Interview questions
What is the difference between Warning and Critical health rule severities?
Warning and Critical are the two severity levels a health rule violation can reach, and they exist so that not every deviation from normal gets treated with the same urgency — a mild slowdown and a full outage shouldn't page the same person the same way.
| Warning | Critical |
| A moderate, less severe threshold breach. | A more severe threshold breach, further from baseline. |
| Shown as yellow/orange on the flow map. | Shown as red on the flow map. |
| Often routed to a lower-urgency channel, e.g. a team chat. | Often routed to a higher-urgency channel, e.g. paging on-call. |
| Good for early signals worth watching, not yet acting on urgently. | Good for conditions that need immediate human attention. |
A single health rule can define both a Warning and a Critical threshold at once, so the same underlying condition escalates in severity as it worsens, rather than needing two entirely separate rules to express one continuum of severity.
Can a single health rule define both Warning and Critical thresholds?
What color typically represents a Critical status on the flow map?
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