kevinveenbirkenbachandClaude Opus 5.5
f52da1c875
The shared proxy's nginx.conf derived worker_connections from the
openresty container's pids_limit. pids_limit caps processes and threads,
worker_connections caps simultaneous sockets per worker (client and
upstream), so with pids_limit 256 and one worker the whole host's proxy
held about 256 sockets, roughly 128 proxied requests in flight across
every vhost. Raising pids_limit to buy connections would loosen the
fork-bomb guard.
svc-prx-openresty now declares services.openresty.worker_connections
(4096 per worker, the common nginx production range, enough for several
chunk-heavy apps such as OpenWebUI at ~150-170 requests per page load).
WEBSERVER_PROXY_WORKER_CONNECTIONS reads it through lookup('config'),
without a default, so a missing key fails loudly. pids_limit stays 256.
WEBSERVER_PROXY_WORKER_RLIMIT_NOFILE is derived as 2x worker_connections
(8192), one descriptor for each client and upstream socket of a proxied
request, and nginx.conf renders it as worker_rlimit_nofile. The openresty
container pins its nofile ulimit (soft and hard) to the same value:
workers call setrlimit as root without CAP_SYS_RESOURCE, so they can only
lower the hard limit, and the inherited hard limit depends on the host
daemon (Docker >= 25 defaults to 1024:524288, DiD nests whatever the
outer container has). An explicit ulimit makes the rlimit succeed on
every host instead of logging a setrlimit alert.
The unit test pins worker_connections 4096, worker_rlimit_nofile 8192 and
the container ulimit, and fails when worker_connections follows
pids_limit again.
Live proof (compose deploy of web-svc-html, both plays failed=0): the
deployed nginx.conf renders worker_rlimit_nofile 8192 and
worker_connections 4096; openresty's master, worker and cache manager
run with "Max open files 8192 8192"; the openresty log carries no
setrlimit or "worker_connections are not enough" line.
Closes #1300
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
OpenResty
This role deploys an OpenResty container via Docker Compose, validates its configuration, and restarts it on changes.
Description
- Runs an OpenResty container in host network mode
- Mounts NGINX configuration and Let’s Encrypt directories
- Validates the OpenResty (NGINX) configuration before any restart
- Restarts the container only if the configuration is valid
Overview
- Loads the base Docker Compose setup
- Adds the OpenResty service
- Defines handlers to validate and restart the container
- Triggers a restart on configuration changes
Cosmos
The diagram places OpenResty in the Infinito.Nexus cosmos: the components it deploys (capabilities), the central services it consumes (dependencies), and its outward reach (federation and bridged external networks).
flowchart LR
subgraph deps [Dependencies]
dep_svc_bkp_volume_2_local["svc-bkp-volume-2-local 💻"]
dep_svc_net_tor["svc-net-tor 🐳🐝"]
end
subgraph role [svc-prx-openresty 🐳🐝]
svc_openresty["openresty"]
svc_tor["tor"]
svc_container_backup["container_backup"]
end
dep_svc_bkp_volume_2_local -- "1:1" --> svc_container_backup
dep_svc_net_tor -. "0..1" .-> svc_tor
Solid 1:1 edges are fixed relationships; dashed 0..1 edges are conditional (enabled only in matching deployments); red 0..0 edges are turned off in this role. Node markers show the role's deploy modes (💻 host, 🐳 compose, 🐝 swarm); ❌ marks a service that is explicitly turned off, and ⚙️ an Ansible role dependency declared in meta/main.yml.
Features
- Automated provisioning: Configured by Ansible without manual steps.
Quick Setup
Development
Clone, set up the workstation, and deploy OpenResty onto the local stack:
git clone https://github.com/infinito-nexus/core.git
cd core
make onboard
make compose-deploy mode=reinstall apps=svc-prx-openresty full_cycle=false
Production
Run the published image to provision the inventory and deploy OpenResty to a managed server (the mounted volume persists the inventory):
APP=svc-prx-openresty
HOST=<your-server>
DOMAIN=<your-domain>
TLS_MODE=self_signed
SSH_PUBLIC_KEY="<your-ssh-public-key>"
docker run --rm -it \
-v "$PWD/inventories:/etc/infinito.nexus/inventories" \
-e APP="$APP" -e HOST="$HOST" -e DOMAIN="$DOMAIN" -e TLS_MODE="$TLS_MODE" -e SSH_PUBLIC_KEY="$SSH_PUBLIC_KEY" \
ghcr.io/infinito-nexus/core/debian bash -c '
INVENTORY=/etc/infinito.nexus/inventories/production
infinito administration inventory provision "$INVENTORY" \
--inventory-file "$INVENTORY/devices.yml" \
--host "$HOST" \
--include "$APP" \
--vars "{\"TLS_MODE\": \"$TLS_MODE\", \"DOMAIN_PRIMARY\": \"$DOMAIN\", \"users\": {\"administrator\": {\"authorized_keys\": [\"$SSH_PUBLIC_KEY\"]}}}" &&
infinito administration deploy dedicated "$INVENTORY/devices.yml" \
--password-file "$INVENTORY/.password" \
--diff -vv'
Further Reading
Credits
Implemented by Kevin Veen-Birkenbach. Part of the Infinito.Nexus Project and maintained by Kevin Veen-Birkenbach. Licensed under the Infinito.Nexus Community License (Non-Commercial).