# Node.js application deployment recipe - Chef 16+ unified mode
# Ensure Node.js is installed
include_recipe 'nodejs::default'
# Application deployment directory
app_dir = "#{node['nodejs']['app']['dir']}/current"
directory app_dir do
owner node['nodejs']['app']['user']
group node['nodejs']['app']['group']
mode '0755'
recursive true
action :create
end
# Deploy application code (simplified - would use git/deploy resource in production)
directory "#{app_dir}/app" do
owner node['nodejs']['app']['user']
group node['nodejs']['app']['group']
mode '0755'
action :create
end
# Create package.json
file "#{app_dir}/package.json" do
content <<~JSON
{
"name": "example-app",
"version": "1.0.0",
"main": "server.js",
"dependencies": {
"express": "^4.18.0"
},
"scripts": {
"start": "node server.js"
}
}
JSON
owner node['nodejs']['app']['user']
group node['nodejs']['app']['group']
mode '0644'
end
# Install npm dependencies
execute 'npm-install-dependencies' do
command 'npm install --production'
cwd app_dir
user node['nodejs']['app']['user']
group node['nodejs']['app']['group']
environment node['nodejs']['app']['environment']
not_if { ::File.exist?("#{app_dir}/node_modules") }
end
# Create PM2 ecosystem file
if node['nodejs']['pm2']['enabled']
template "#{app_dir}/ecosystem.config.js" do
source 'ecosystem.config.js.erb'
owner node['nodejs']['app']['user']
group node['nodejs']['app']['group']
mode '0644'
variables(
app_name: 'example-app',
script: "#{app_dir}/server.js",
instances: node['nodejs']['pm2']['instances'],
exec_mode: node['nodejs']['pm2']['exec_mode'],
max_memory_restart: node['nodejs']['pm2']['max_memory_restart'],
env: node['nodejs']['app']['environment']
)
end
# Start/restart application with PM2
execute 'pm2-start-app' do
command "pm2 startOrRestart #{app_dir}/ecosystem.config.js --update-env"
user node['nodejs']['app']['user']
environment({ 'HOME' => node['nodejs']['app']['dir'] })
cwd app_dir
end
execute 'pm2-save' do
command 'pm2 save'
user node['nodejs']['app']['user']
environment({ 'HOME' => node['nodejs']['app']['dir'] })
end
end
# Create systemd service (alternative to PM2)
unless node['nodejs']['pm2']['enabled']
template '/etc/systemd/system/nodejs-app.service' do
source 'nodejs-app.service.erb'
owner 'root'
group 'root'
mode '0644'
variables(
user: node['nodejs']['app']['user'],
group: node['nodejs']['app']['group'],
working_directory: app_dir,
exec_start: '/usr/bin/node server.js',
environment: node['nodejs']['app']['environment']
)
notifies :run, 'execute[systemctl-daemon-reload]', :immediately
notifies :restart, 'service[nodejs-app]', :delayed
end
execute 'systemctl-daemon-reload' do
command 'systemctl daemon-reload'
action :nothing
end
service 'nodejs-app' do
action [:enable, :start]
end
end
