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certctl/docs/reference/connectors/apache.md
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shankar0123 ecb8896b1c docs: cleanup pre-existing broken links in connector pages
Phase 4 structural (commit 633e440) moved 6 connector files into the
new docs/reference/connectors/ subdirectory but didn't update all
inter-doc references for the new path layout. Phase 11 caught the
high-traffic ones; this sweep gets the rest, found by the Phase 4
follow-on verification pass.

Mappings applied (relative to docs/reference/connectors/):

  deployment-atomicity.md     → ../deployment-model.md
  deployment-vendor-matrix.md → ../vendor-matrix.md
  architecture.md             → ../architecture.md
  est.md                      → ../protocols/est.md
  scep-intune.md              → ../protocols/scep-intune.md
  async-polling.md            → ../protocols/async-ca-polling.md
  quickstart.md               → ../../getting-started/quickstart.md
  demo-advanced.md            → ../../getting-started/advanced-demo.md
  legacy-est-scep.md          → ../protocols/scep-server.md
  connectors.md               → index.md

Plus prose backtick references (`docs/architecture.md` etc.) updated
to the new subdirectory paths.

Files touched: apache, f5, iis, k8s, nginx, index. 33 line changes.
Full link-check across docs/reference/connectors/*.md is now clean
(0 broken inter-doc references).
2026-05-05 04:10:09 +00:00

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# Apache httpd Connector — Operator Deep-Dive
> Last reviewed: 2026-05-05
>
> Per Phase 14 of the deploy-hardening II master bundle. For the
> connector-development context (interface contract, registry, atomic
> deploy primitive shared across all targets), see the
> [connector index](index.md).
## Overview
The Apache connector (`internal/connector/target/apache/`) deploys
TLS certs to Apache 2.4 LTS via separate cert/chain/key files +
`apachectl configtest` validate + `apachectl graceful` reload.
Mirrors the canonical NGINX template (Bundle I Phase 5).
## Vendor versions tested
- **Apache httpd 2.4 LTS** (only LTS branch; 2.6 is dev branch)
## Per-quirk operator guidance
### Multi-vhost cert-by-vhost
`TestVendorEdge_Apache_MultiVhostCertByVhost_DeployIsolated_E2E`
When Apache has multiple `<VirtualHost>` blocks each with its own
`SSLCertificateFile`, connector deploys to the matching vhost
only. Other vhosts unchanged.
### `apachectl graceful-stop` drains cleanly
`TestVendorEdge_Apache_ApachectlGracefulStop_DrainsCleanly_E2E`
`apachectl graceful` (the connector default) preserves in-flight
TLS connections. `apachectl restart` drops them.
### `mod_ssl` absent
`TestVendorEdge_Apache_ModSSLAbsent_DeployFailsWithActionableError_E2E`
If `mod_ssl` isn't loaded, `apachectl configtest` fails with
"Invalid command 'SSLCertificateFile'". Connector surfaces this
verbatim — operator action: `LoadModule ssl_module modules/mod_ssl.so`.
### `.htaccess` interactions
`TestVendorEdge_Apache_HtaccessRequireSSL_NotImpactedByDeploy_E2E`
`.htaccess` rules requiring SSL are not impacted by cert rotation.
The `Require` directive evaluates per-request against the
connection's TLS state, not the cert file.
### Apache 2.4 LTS reload semantics pinned
`TestVendorEdge_Apache_Apache24LTSReloadSemanticsPinned_E2E`
`apachectl graceful` semantics stable across 2.4.x patch versions.
No per-version branch needed.
### Syntax error rollback
`TestVendorEdge_Apache_SyntaxErrorRollback_E2E`
`apachectl configtest` failure aborts before atomic rename. Live
cert untouched.
### Per-vhost key ownership
`TestVendorEdge_Apache_PerVhostKeyOwnership_E2E`
When multiple vhosts share the same key file, ownership is
preserved across rotation. When each vhost has its own key,
per-file ownership is preserved per Bundle I Phase 5.
### Reload preserves connections
`TestVendorEdge_Apache_ReloadVsRestart_PreservesConnections_E2E`
In-flight TLS sessions survive `apachectl graceful` worker
swap. Documented in `docs/reference/deployment-model.md`.
### SNI server_name binding
`TestVendorEdge_Apache_SNIServerNameDeployBindsCorrect_E2E`
When deploy specifies `server_name` metadata, connector targets
the matching `<VirtualHost>` block.
### Cert chain ordering
`TestVendorEdge_Apache_ChainOrderingNormalized_E2E`
Apache requires leaf cert FIRST in `SSLCertificateFile` (or
chain in `SSLCertificateChainFile`). Connector preserves operator-
supplied ordering across rotation.
## V3-Pro deferrals
- Apache 2.6 (when it ships LTS).
- mod_md (Apache's built-in ACME) interop.
## Related docs
- [Atomic deploy + post-verify + rollback](../deployment-model.md)
- [Vendor compatibility matrix](../vendor-matrix.md)