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keycloak-pattern/deploy/lab/edge/nginx-keycloak-lab.conf

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# Lab entry point. Deployed on the lab host as
# /etc/nginx/sites-available/keycloak-lab
# and symlinked from sites-enabled/.
#
# Arch does not ship the Debian sites-available convention, so nginx.conf needs
# include /etc/nginx/sites-enabled/*;
# inside its http { } block before this file has any effect.
#
# This is the outer of two L7 hops. It terminates TLS and hands plain HTTP to
# the Traefik instance running on each k3s node.
upstream k3s_traefik {
# Sticky-session switch. Keycloak recommends affinity on AUTH_SESSION_ID;
# ip_hash is the cheap stand-in for a single-browser lab. Leaving it off is
# the interesting case: Infinispan still routes correctly, only slower.
# ip_hash;
server 192.168.122.11:80;
server 192.168.122.12:80;
}
server {
listen 80 default_server;
server_name _;
return 301 https://$host$request_uri;
}
server {
# The http2 parameter of listen, not the separate `http2 on;` directive:
# that directive needs nginx >= 1.25.1 and the edge guest is Debian 12
# (nginx 1.22). This form works on both and is what the lab actually runs.
listen 443 ssl http2 default_server;
server_name _;
# fullchain.pem, never cert.pem: omitting the intermediates passes on
# desktop browsers and fails on mobile and curl.
ssl_certificate /etc/letsencrypt/live/auth.hyeonworks.com/fullchain.pem;
ssl_certificate_key /etc/letsencrypt/live/auth.hyeonworks.com/privkey.pem;
ssl_protocols TLSv1.2 TLSv1.3;
location / {
proxy_pass http://k3s_traefik;
proxy_http_version 1.1;
proxy_set_header Host $host;
proxy_set_header X-Forwarded-Host $host;
proxy_set_header X-Forwarded-Proto https;
proxy_set_header X-Forwarded-Port 443;
# $remote_addr, not $proxy_add_x_forwarded_for. This is the trust
# boundary: a client-supplied X-Forwarded-For must be discarded, not
# extended, or nothing downstream can rely on the value.
proxy_set_header X-Forwarded-For $remote_addr;
proxy_set_header X-Real-IP $remote_addr;
proxy_read_timeout 3600s;
proxy_send_timeout 3600s;
}
}