Concepts·Certified Kubernetes Administrator
Sidecar Containers
An init container with `restartPolicy: Always` is not an init container. It keeps running beside the main container - `started=true` and `ready=true` at the same instant - and it lives in the initContainers list anyway.
Workloads Guide 32 of 103 Intermediate
- Kubernetes1.36.4
- Runtimecontainerd 2.2.6
- CNICalico v3.32.1
- TimeAbout 14 min
- Reviewed22 August 2026
| Server Name | IP Address | OS | Roles | CPU | RAM | HDD |
|---|---|---|---|---|---|---|
| CKA1001 | 192.168.0.175 | Ubuntu 26.04 LTS | Control Plane Node | 2 Core | 4 GB | 50 GB |
| CKA1001-NODE01 | 192.168.0.176 | Ubuntu 26.04 LTS | Worker Node | 2 Core | 4 GB | 50 GB |
| CKA1001-NODE02 | 192.168.0.177 | Ubuntu 26.04 LTS | Worker Node | 2 Core | 4 GB | 50 GB |
| CKA1001-NODE03 | 192.168.0.178 | Ubuntu 26.04 LTS | Worker Node | 2 Core | 4 GB | 50 GB |
Before you start
- guide 31 - this is the same field with one line added, and the contrast is the guide.
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An init container finishes
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One line changes what it is
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Why it was worth a new feature