feat(haproxy): simplify Gitea rate limiting and fix rule ordering #31

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Richie merged 1 commits from haproxy-rate-limit-tuning into main 2026-07-02 14:17:21 -04:00
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+28 -30
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@@ -37,6 +37,23 @@ frontend ContentSwitching
acl host_gitea hdr(host) -i gitea.tmmworkshop.com
acl host_norn_sight hdr(host) -i www.norn-sight.com
# --- Request logging ---
# Capture the Host header and User-Agent so the httplog shows who is
# requesting what. They appear in the log's {captured|headers} field,
# in this order: {host|user-agent}. Client IP is already logged by httplog.
# Kept above the rate limiting so denied (429) requests are captured too.
http-request capture req.hdr(Host) len 100
http-request capture req.hdr(User-Agent) len 128
# --- robots.txt ---
# Serve a single global robots.txt for every vhost (asks crawlers to wait
# 10s between requests via Crawl-delay). Returned for both HTTP and HTTPS.
# File is deployed to /etc/haproxy/robots.txt by haproxy.nix.
# Kept above the rate limiting so crawlers can always read it: `return` is a
# terminating action, so robots.txt requests are never tracked or denied.
acl is_robots path /robots.txt
http-request return status 200 content-type "text/plain" file /etc/haproxy/robots.txt if is_robots
# --- Rate limiting (Gitea only, per source IP) ---
# Trusted devices exempt from rate limiting (add one line per IP/CIDR).
# Internal / reserved-for-private-use ranges:
@@ -47,42 +64,25 @@ frontend ContentSwitching
# Add specific public devices below as needed:
# acl rate_limit_allowlist src 192.0.2.50
# Logged-in Gitea sessions bypass the rate limits. Gitea sets the
# `i_like_gitea` session cookie on login, and it is only sent to the Gitea
# vhost, so this only affects Gitea traffic. Note: this matches cookie
# PRESENCE, not validity, so it filters anonymous crawlers (which carry no
# cookie) rather than acting as a hard security boundary.
acl gitea_logged_in req.cook(i_like_gitea) -m found
# Track HTTP request rate per client IP over a 10s sliding window. Only Gitea
# is rate-limited; all other vhosts are left alone.
# ipv6 table type also covers IPv4 (mapped), so it works for both binds.
stick-table type ipv6 size 100k expire 30s store http_req_rate(10s)
http-request track-sc0 src if host_gitea !is_acme !rate_limit_allowlist !gitea_logged_in
http-request track-sc0 src if host_gitea !is_acme !rate_limit_allowlist
# Threshold: deny (429) when a client exceeds this many requests per 10s.
acl over_rate_limit sc_http_req_rate(0) gt 10
http-request deny deny_status 429 if over_rate_limit host_gitea !is_acme !rate_limit_allowlist !gitea_logged_in
# --- Request logging ---
# Capture the Host header and User-Agent so the httplog shows who is
# requesting what. They appear in the log's {captured|headers} field,
# in this order: {host|user-agent}. Client IP is already logged by httplog.
http-request capture req.hdr(Host) len 100
http-request capture req.hdr(User-Agent) len 128
# --- robots.txt ---
# Serve a single global robots.txt for every vhost (asks crawlers to wait
# 10s between requests via Crawl-delay). Returned for both HTTP and HTTPS.
# File is deployed to /etc/haproxy/robots.txt by haproxy.nix.
acl is_robots path /robots.txt
http-request return status 200 content-type "text/plain" file /etc/haproxy/robots.txt if is_robots
# Kept loose (50/10s) since logged-in users are rate-limited too; a page
# load can burst a few dozen asset requests.
acl over_rate_limit sc_http_req_rate(0) gt 50
http-request deny deny_status 429 if over_rate_limit host_gitea !is_acme !rate_limit_allowlist
# --- Per-endpoint limit: Gitea compare/diff is expensive; cap at 1 req / 5 min / IP ---
# Tracked in a separate 5-minute table (st_compare) since a proxy has only one
# inline stick-table. Allow-listed (internal) IPs are exempt.
acl is_gitea_compare path_beg /Richie/dotfiles/compare
http-request track-sc1 src table st_compare if host_gitea is_gitea_compare !rate_limit_allowlist !gitea_logged_in
http-request deny deny_status 429 if host_gitea is_gitea_compare !rate_limit_allowlist !gitea_logged_in { sc_http_req_rate(1,st_compare) gt 1 }
# Matches /<owner>/<repo>/compare on every repo; -i because Gitea routes are
# case-insensitive.
acl is_gitea_compare path_reg -i ^/[^/]+/[^/]+/compare
http-request track-sc1 src table st_compare if host_gitea is_gitea_compare !rate_limit_allowlist
http-request deny deny_status 429 if host_gitea is_gitea_compare !rate_limit_allowlist { sc_http_req_rate(1,st_compare) gt 1 }
# Hosts allowed to serve plain HTTP (add entries to skip the HTTPS redirect)
acl allow_http hdr(host) -i __none__
@@ -117,10 +117,8 @@ backend cache_nodes
server server 127.0.0.1:5000
backend jellyfin
option httpchk
mode http
option forwardfor
http-check send meth GET uri /health
http-check expect string Healthy
server jellyfin 127.0.0.1:8096
backend share_nodes