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Author	SHA1	Message	Date
emily	e4fe9e84bd	fix: nginx syslog access_log tag must not contain a hyphen ... The nginx_access syslog tag added in #37 (feat/emily-incident-logging) used tag=nginx-access. nginx's syslog sink only accepts alphanumeric characters and underscores in the tag field, so the generated nginx.conf failed its config test on linode: nginx: [emerg] syslog "tag" only allows alphanumeric characters and underscore in .../nginx.conf:114 Because nginx-pre-start failed, nginx.service crash-looped until it hit systemd's start-limit-hit and gave up entirely. Since Nextcloud is proxied through nginx (127.0.0.1:8080, fronted by haproxy's 'next' backend), this took next.thehellings.com down with a 503 from haproxy (phpfpm-nextcloud/postgresql/redis backends were all healthy and unaffected - purely an nginx config parse failure). Fix: use an underscore (nginx_access) instead of a hyphen.	2026-08-09 21:38:53 -05:00
emily	10cdf9408d	feat: enable request-level logging for bandwidth/traffic incident tracing ... Triggered by investigating a several-hour >10Mbps traffic spike to linode. HAProxy's own IPAccounting confirmed ~121GB moved over ~19.6h before it crash-looped, but with 'option httplog' commented out and no per-backend request logs, there was no way to attribute that traffic to a specific backend, host, or client. - linode: enable HAProxy httplog + defaults 'log global' (was commented out) so every proxied HTTP request is now logged with timing/status/bytes. - linode: add a haproxy 'stats' listener on 127.0.0.1:8404 for live per-backend/per-server connection and byte counters. - linode: route nginx (Nextcloud's local vhost) access logs to journald via syslog, since the read-only monitoring account has no access to /var/log/nginx/*. - linode: enable vnstat for historical per-interface bandwidth tracking (5-min granularity) so a reported 'traffic was high for N hours' can be confirmed/timestamped immediately instead of reconstructed after the fact from journal timestamps. - k3s manifests: enable Traefik access logging (JSON) — this is the ingress layer HAProxy forwards :80 traffic to (git/matrix/immich), and lacked any per-request visibility. - hosts/baseline.nix (fleet-wide): add a journald rate limit (2000 lines / 30s per unit). Found live while investigating that uptime-kuma on 'kuma' was logging a Prometheus label-validation error on every monitor beat (~100k lines/hour), which was itself degrading journalctl responsiveness on that host during the cross-host traffic scan. Related but not otherwise addressed here: Nebula relay/handshake churn on kuma's tunnel and the etcd read-latency warnings seen on isaiah/zeke around the same incident window — noted for a future investigation, not fixed by this PR.	2026-08-09 16:15:35 -05:00
emily	3cba4cbd86	feat: add read-only emily monitoring account ... Adds a new NixOS module (greg.monitoring-access) that provisions a dedicated, SSH-key-only 'emily' user account across all managed hosts. The account is intentionally minimal-privilege: - No password set (SSH key auth only) - Not a member of wheel, no sudo/sudo-rs rules - Only extra group membership is systemd-journal, granting read access to system logs for monitoring/analysis tasks - Authorized key lives in home/ssh/emily_authorized_keys, mirroring the existing pattern used for the greg account's authorized_keys This lets the Hermes agent (emily) log in read-only to inspect logs and system state when asked, without any ability to modify configuration, escalate privileges, or run destructive commands. Module is imported unconditionally in modules/nixos/default.nix like the other nixos modules, and defaults to enabled; it can be disabled per-host via greg.monitoring-access.enable = false if ever needed.	2026-08-09 07:38:01 -05:00
emily	28977235a1	chore: clean up builder2, Ceph module, normalize Darwin host symlinks ... - Remove builder2 (retired host): dangling network.json entry and empty home/hosts/builder2 stub. Its old IP (10.42.1.17) is already correctly owned by pve4. - Remove the abandoned Ceph module (modules/nixos/ceph.nix) and its unencrypted plaintext keyring files under secrets/. No host ever enabled services.ceph-benaco; the keyrings were dead, unencrypted credentials sitting in the repo. - Normalize Darwin host identity: IVR and Lithic are the only two physical Darwin machines. All other darwin/hosts/* names are now symlinks to whichever of the two they represent, matching the DHCP name variations nix-darwin sees depending on network: gregory -> ivr gregory.hellings-mbp -> ivr MacBook-Prolocal -> ivr gregs-MacBook-Pro-16-inch-Nov-2024 -> lithic li -> lithic (pre-existing) This lets each machine's config be maintained once regardless of what hostname it currently advertises.	2026-08-08 02:49:50 -05:00
emily	fcb5a89727	fix: correct pve1 IP to 10.42.0.4, rename stale joel/opnsense refs ... pve1 is a static/DHCP-reserved Proxmox host at 10.42.0.4 (previously mislabeled 'joel' in some places). 10.42.1.1 is the UDM Pro gateway IP, not pve1 -- OPNsense was retired in favor of Ubiquiti. Removes the stale duplicate PVE1 DHCP reservation at 10.42.1.1 and drops the now-redundant 'joel' entry from network.json (consolidated into pve1).	2026-08-08 00:44:21 -05:00