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ecb8896b1c
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).
107 lines
3.2 KiB
Markdown
107 lines
3.2 KiB
Markdown
# Apache httpd Connector — Operator Deep-Dive
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> Last reviewed: 2026-05-05
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>
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> Per Phase 14 of the deploy-hardening II master bundle. For the
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> connector-development context (interface contract, registry, atomic
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> deploy primitive shared across all targets), see the
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> [connector index](index.md).
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## Overview
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The Apache connector (`internal/connector/target/apache/`) deploys
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TLS certs to Apache 2.4 LTS via separate cert/chain/key files +
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`apachectl configtest` validate + `apachectl graceful` reload.
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Mirrors the canonical NGINX template (Bundle I Phase 5).
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## Vendor versions tested
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- **Apache httpd 2.4 LTS** (only LTS branch; 2.6 is dev branch)
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## Per-quirk operator guidance
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### Multi-vhost cert-by-vhost
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`TestVendorEdge_Apache_MultiVhostCertByVhost_DeployIsolated_E2E`
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When Apache has multiple `<VirtualHost>` blocks each with its own
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`SSLCertificateFile`, connector deploys to the matching vhost
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only. Other vhosts unchanged.
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### `apachectl graceful-stop` drains cleanly
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`TestVendorEdge_Apache_ApachectlGracefulStop_DrainsCleanly_E2E`
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`apachectl graceful` (the connector default) preserves in-flight
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TLS connections. `apachectl restart` drops them.
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### `mod_ssl` absent
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`TestVendorEdge_Apache_ModSSLAbsent_DeployFailsWithActionableError_E2E`
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If `mod_ssl` isn't loaded, `apachectl configtest` fails with
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"Invalid command 'SSLCertificateFile'". Connector surfaces this
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verbatim — operator action: `LoadModule ssl_module modules/mod_ssl.so`.
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### `.htaccess` interactions
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`TestVendorEdge_Apache_HtaccessRequireSSL_NotImpactedByDeploy_E2E`
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`.htaccess` rules requiring SSL are not impacted by cert rotation.
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The `Require` directive evaluates per-request against the
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connection's TLS state, not the cert file.
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### Apache 2.4 LTS reload semantics pinned
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`TestVendorEdge_Apache_Apache24LTSReloadSemanticsPinned_E2E`
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`apachectl graceful` semantics stable across 2.4.x patch versions.
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No per-version branch needed.
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### Syntax error rollback
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`TestVendorEdge_Apache_SyntaxErrorRollback_E2E`
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`apachectl configtest` failure aborts before atomic rename. Live
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cert untouched.
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### Per-vhost key ownership
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`TestVendorEdge_Apache_PerVhostKeyOwnership_E2E`
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When multiple vhosts share the same key file, ownership is
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preserved across rotation. When each vhost has its own key,
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per-file ownership is preserved per Bundle I Phase 5.
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### Reload preserves connections
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`TestVendorEdge_Apache_ReloadVsRestart_PreservesConnections_E2E`
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In-flight TLS sessions survive `apachectl graceful` worker
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swap. Documented in `docs/reference/deployment-model.md`.
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### SNI server_name binding
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`TestVendorEdge_Apache_SNIServerNameDeployBindsCorrect_E2E`
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When deploy specifies `server_name` metadata, connector targets
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the matching `<VirtualHost>` block.
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### Cert chain ordering
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`TestVendorEdge_Apache_ChainOrderingNormalized_E2E`
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Apache requires leaf cert FIRST in `SSLCertificateFile` (or
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chain in `SSLCertificateChainFile`). Connector preserves operator-
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supplied ordering across rotation.
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## V3-Pro deferrals
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- Apache 2.6 (when it ships LTS).
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- mod_md (Apache's built-in ACME) interop.
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## Related docs
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- [Atomic deploy + post-verify + rollback](../deployment-model.md)
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- [Vendor compatibility matrix](../vendor-matrix.md)
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