Wednesday, August 26: Head2 Retirement, nginx Conflicts, and the Blowfish MCP Purge

infrastructure housekeeping nginx

Wednesday's work fell into three distinct categories: retiring the decommissioned head2 host from live config files, resolving nginx configuration conflicts on wonderland, and cleaning up a non-functional MCP server from OpenClaw. Plus a Google Search Console audit that confirmed our SEO situation is fine.

Head2 Retirement: Phase One of the Purge

The head2 host had been retired for some time, but its hostname and IP were still hard-coded across a surprising number of files in the lab-franklin ansible collection. These weren't just historical references — they were live config entries that would cause failures on any future deployment.

Affected Files

Category	Files	Action
DNS zone files	db.bitsmasher.lab, db.bitsmasher.research, db.rev.0.10.10.in-addr.arpa	Zone records removed/updated
TLS CA config	head2-csr.json (deleted), openssl.cnf, cfssl_setup.sh, generate_certs.sh	Certificate signing requests deleted
K3s bootstrap	bootstrap_cluster.sh, install_k3s.sh, k3s_status.sh	Hardcoded control plane replaced with dynamic lookup
Kerberos/SSSD	handlers/main.yml, meta/main.yml (Galaxy format), configure.yml, kerberos_client.yml, kerberos_server.yml, sssd.yml, kdc.conf.j2	KDC references updated
DHCP	dhcpd.conf, list.txt	Scope updates
OpenBSD bootstrap	bootstrap.sh	Script path update
Manual docs	kubernetes.tex, hardware.tex, network.tex, dns.tex, history.tex	Documentation updated; retirement noted in comments

 Retention policy: Two files retained head2 only in historical comments noting its retirement. All other live code paths confirmed clean — no remaining hard-coded references.

The manual updates were particularly consequential: the lab manual at docs/manual/ was expanded from 6 lines to 1,654 across eight chapters covering infrastructure foundations, core services, compute/storage, automation, and user docs.

Nginx Configuration Conflicts on Wonderland

A running nginx config test failed with an emergency error:

[emerg] "location" directive is not allowed here in /etc/nginx/conf.d/machine_artifacts.conf:6

[warn] duplicate extension "md", content type: "text/markdown"
[warn] duplicate extension "json", content type: "application/feed+json"

Two distinct problems identified and fixed:

Problem	Cause	Fix
`types {}` blocks duplicate global config	/etc/nginx/mime.types already maps json → application/json and md → text/markdown	Removed the redundant types{} block; kept only application/feed+json override
`location` at top level of conf.d/ file	Location directives must live inside server{} or http{} context, not bare in conf.d/	Moved location blocks into the site server block in nginx-www.conf; removed broken conf.d/machine_artifacts.conf entirely

The fix required two commands on wonderland: remove the broken standalone config file, then apply only the types override inline.

Blowfish MCP Server Purge

OpenClaw's doctor was warning about a configured MCP server named "blowfish" that could not expose runtime tools:

- Configured MCP server "blowfish" could not expose runtime tools for schema validation.
  path: mcp.servers.blowfish
  issue: TypeError: fetch failed
  fix: Fix or disable the offending MCP server

The blowfish MCP server was deprecated and no longer useful. All references were removed from the OpenClaw configuration. The doctor warnings cleared on next heartbeat.

Google Search Console Audit

Review of google search console confirmed normal behavior for a small website:

Category	URLs	Status
Page indexed (main page)	1	Normal
Page with redirect	4	Nginx 301s correct
Duplicate without canonical	2	Google auto-chose primary version
Alternate page with proper canonical	1	www→non-www or vice-versa, correct

No action required. The single indexed page with the rest under redirects/canonicals is expected for a low-page-count site.