Injected containers handling

Explore PerfectScale’s approach to handling injected (immutable) containers

PerfectScale identifies sidecar containers within pods. Due to the immutable nature of sidecar container resource allocations, Automation does not apply changes to sidecar containers. Instead, PerfectScale focuses on pod-level recommendations, ensuring safe and effective optimization without impacting sidecar functionality.

When the injected sidecar is detected:

1. PerfectScale will indicate such container as injected sidecar.

2. Limited by Rule Automation status will be raised for the automated workloads.

3. Automation executes pod-level recommendations only.

4. Automation won’t make changes that could trigger HPA (if such is introduced) due to under-provisioned sidecars. Current values are kept to maintain stability.

Injected sidecar is detected

When PerfectScale identifies the immutable container within the pod, the Automation status will be updated to the Limited by Rule, and injected sidecar badge will appear for this container.

Injected sidecar badge

In this case, PerfectScale Automation will not apply the recommendations, and a tooltip will appear next to the resource utilization chart and recommendations section.

HPA and Sidecar Detected

When an immutable container is detected in a pod with HPA enabled, Automation will also be restricted for the other containers in that pod. This prevents triggering the HPA due to under-provisioned sidecar allocations and ensures workload stability.

In this case, PerfectScale retains the current values in order to maintain stability and avoid potential risks.

Automation is restricted