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agaudreault merged 1 commit into from
Sep 12, 2025
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docs: add TLS configuration quick reference table for easier understanding #23888

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24 changes: 24 additions & 0 deletions docs/operator-manual/tls.md
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Expand Up @@ -16,6 +16,30 @@ most users will want to explicitly configure the certificates for these TLS
endpoints, possibly using automated means such as `cert-manager` or using
their own dedicated Certificate Authority.

## TLS Configuration Quick Reference

### Certificate Configuration Overview

| Component | Secret Name | Hot Reload | Default Cert | Required SAN Entries |
|-----------|-------------|------------|---------------|---------------------|
| `argocd-server` | `argocd-server-tls` | ✅ Yes | Self-signed | External hostname (e.g., `argocd.example.com`) |
| `argocd-repo-server` | `argocd-repo-server-tls` | ❌ Restart required | Self-signed | `DNS:argocd-repo-server`, `DNS:argocd-repo-server.argocd.svc` |
| `argocd-dex-server` | `argocd-dex-server-tls` | ❌ Restart required | Self-signed | `DNS:argocd-dex-server`, `DNS:argocd-dex-server.argocd.svc` |

### Inter-Component TLS

| Connection | Strict TLS Parameter | Plain Text Parameter | Default Behavior |
|------------|---------------------|---------------------|------------------|
| `argocd-server` → `argocd-repo-server` | `--repo-server-strict-tls` | `--repo-server-plaintext` | Non-validating TLS |
| `argocd-application-controller` → `argocd-repo-server` | `--repo-server-strict-tls` | `--repo-server-plaintext` | Non-validating TLS |
| `argocd-server` → `argocd-dex-server` | `--dex-server-strict-tls` | `--dex-server-plaintext` | Non-validating TLS |

### Certificate Priority (argocd-server only)

1. `argocd-server-tls` secret (recommended)
2. `argocd-secret` secret (deprecated)
3. Auto-generated self-signed certificate

## Configuring TLS for argocd-server

### Inbound TLS options for argocd-server
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