Files
cloud-node-container/scripts/entrypoint.sh
Josh Knapp b431a66a7b Fix wedged-container outage: TCP healthcheck + tini-managed PID 1
A 10s postgresql restart took down transcribe.shadowdao.com-01 for ~17h
because pm2 gave up after 5 fast retries, the entrypoint's trailing
tail -f kept PID 1 alive, and the healthcheck (wget --spider on nginx
port 80) succeeded on the 301-to-https redirect regardless of whether
Node was alive.

Three coordinated fixes to the cnoc image:

- HEALTHCHECK: replace the redirect-passing wget probe with TCP-level
  checks on 127.0.0.1:3000 (Node) and :80 (nginx). Tenant-agnostic, no
  /ping dependency — catches the exact incident scenario (port 3000
  closed when pm2 exits).
- entrypoint.sh: exec pm2 via tini so it becomes PID 1. When pm2
  exhausts max_restarts and exits, the container exits and the
  unless-stopped restart policy brings it back. Logs are tailed in the
  background with -F (logrotate-safe).
- Dockerfile: install tini from EPEL for proper signal forwarding and
  zombie reaping of nginx/crond children that reparent to PID 1.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
2026-05-05 06:59:52 -07:00

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#!/usr/bin/env bash
if [ -z "$NODEVER" ]; then
NODEVER="20";
fi
if [ -z "$environment" ]; then
environment="PROD"
fi
# Create user with proper error handling
if ! id -u $user >/dev/null 2>&1; then
echo "Creating user $user with UID $uid"
adduser -u $uid -m -s /bin/bash $user || {
echo "Failed to create user $user with UID $uid"
exit 1
}
else
echo "User $user already exists"
fi
mkdir -p /home/$user/app
mkdir -p /home/$user/logs/{nginx,nodejs}
# Link log directories
rm -rf /var/log/nginx
ln -s /home/$user/logs/nginx /var/log/nginx
ln -s /home/$user/logs/nodejs /var/log/nodejs
# Configure nginx for reverse proxy
/scripts/create-nginx-config.sh
# Set ownership and permissions
chown -R $user:$user /home/$user
chmod -R 755 /home/$user
# Start nginx
nginx
if [[ $environment == 'DEV' ]]; then
echo "Starting Dev Deployment"
# Ensure microdnf is available for installing additional packages in DEV mode
if ! command -v microdnf &> /dev/null; then
echo "microdnf not found, installing with dnf..."
dnf install -y microdnf && dnf clean all
fi
# Install Memcached for session storage in DEV mode with memory limit
microdnf install -y memcached
# Start memcached with 32MB memory limit
nohup memcached -d -u $user -p 11211 -m 32
fi
# Start cron for log rotation and backups
/usr/sbin/crond
# Create app directory if it doesn't exist
if [ ! -d /home/$user/app ]; then
echo "Creating app directory at /home/$user/app"
mkdir -p /home/$user/app
chown -R $user:$user /home/$user/app
fi
# If app directory is empty, copy the simple-website example
if [ -z "$(ls -A /home/$user/app)" ]; then
echo "App directory is empty, copying simple-website example..."
cp -r /examples/simple-website/* /home/$user/app/
chown -R $user:$user /home/$user/app
echo "Copied simple-website example to provide a working application"
fi
# Now there's always an app in the user directory (either user's or example)
cd /home/$user/app
# Verify user exists and show info
echo "Verifying user setup:"
id $user || { echo "ERROR: User $user does not exist!"; exit 1; }
# Install dependencies as the user
echo "Installing npm dependencies as user $user..."
su -c "npm install" $user
# Check if ecosystem.config.js exists, if not generate it
if [ ! -f /home/$user/app/ecosystem.config.js ]; then
echo "No ecosystem.config.js found, generating from package.json..."
/scripts/generate-ecosystem-config.sh "$user" "/home/$user/app"
chown $user:$user /home/$user/app/ecosystem.config.js
fi
# Mirror logs to docker logs in the background.
# Use -F (capital) so logrotate-recreated files keep streaming.
tail -F /home/$user/logs/nginx/access.log \
/home/$user/logs/nginx/error.log \
/home/$user/logs/nodejs/app.log \
/home/$user/logs/nodejs/out.log \
/home/$user/logs/nodejs/error.log 2>/dev/null &
# Start PM2 under tini so it becomes PID 1 (with proper signal forwarding
# and zombie reaping for nginx/crond/memcached children that reparent here).
# When pm2 exits (e.g. max_restarts exhausted), tini exits and Docker's
# restart policy brings the container back.
echo "Starting PM2 as user $user (under tini as PID 1)..."
cd /home/$user/app
exec tini -- su - $user -c "cd /home/$user/app && NODE_ENV=production pm2 start ecosystem.config.js --no-daemon"