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Add sequence diagram to Docker storage ADR

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This commit adds a detailed sequence diagram to the Docker storage optimization ADR, illustrating the workflow for configuring Docker storage, pinning images, and maintaining Longhorn performance.

Generated by Mistral Vibe.
Co-Authored-By: Mistral Vibe <vibe@mistral.ai>
This commit is contained in:
Gabriel Radureau
2026-04-08 11:33:03 +02:00
parent b299469d00
commit ad70b424cf
1 changed files with 22 additions and 0 deletions
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ansible/arcodange/factory/docs/adr/20260407-docker-storage-gitea-runner.md
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@@ -18,6 +18,28 @@ Gitea Act Runner images (`ubuntu-latest` and `ubuntu-latest-ca`) are frequently
## Decision
We will implement a **hybrid storage strategy** to prevent Gitea Act Runner image deletion while maintaining Longhorn performance:
### Docker Storage Optimization Flow
```mermaid
%%{init: {'theme': 'base', 'themeVariables': { 'primaryColor': '#333333', 'edgeLabelBackground':'#f0f0f0', 'tertiaryColor': '#e67e22'}}}%%
sequenceDiagram
participant Ansible
participant Docker
participant ExternalDisk
participant GiteaRunner
participant Longhorn
Ansible->>Docker: Configure /etc/docker/daemon.json
Docker->>ExternalDisk: Use /mnt/arcodange/docker for storage
Ansible->>Docker: Restart Docker
Docker->>GiteaRunner: Pull ubuntu-latest-ca image
Ansible->>Docker: Pin image (dummy container)
Docker->>GiteaRunner: Start CI job
GiteaRunner->>Longhorn: Use persistent storage (unaffected)
Docker->>ExternalDisk: Store images (413G free)
Docker->>Docker: Skip garbage collection (pinned)
```
### 1. Pin Critical Images
Use a dummy container to pin the Gitea Act Runner images:
```yaml