Node.js设置,方便部署和更新

自动重新启动脚本错误和自动重新加载脚本更改由forever处理，因为它也包括脚本监视，只要Forever从node.js脚本中生成。

为此，我添加了一个server.js来启动我们实际想要运行的app.js脚本：

server.js

var forever = require('forever'),child = new(forever.Monitor)('app.js',{
        'silent': false,'pidFile': 'pids/app.pid','watch': true,'watchDirectory': '.',// Top-level directory to watch from.
        'watchIgnoreDotFiles': true,// whether to ignore dot files
        'watchIgnorePatterns': [],// array of glob patterns to ignore,merged with contents of watchDirectory + '/.foreverignore' file
        'logFile': 'logs/forever.log',// Path to log output from forever process (when daemonized)
        'outFile': 'logs/forever.out',// Path to log output from child stdout
        'errFile': 'logs/forever.err'
    });
child.start();
forever.startServer(child);

这会监视应用程序目录中的所有文件以进行更改，并在更改时立即重新启动运行在foreveras中的脚本。因为日志和pidfile在应用程序的子目录中，所以必须从文件监视中忽略它们，否则脚本将循环重新启动：

.foreverignore

pids/**
logs/**

为了使这一切开始系统启动，并使我们能够轻松地控制服务使用start node-appand stop node-app我们使用Ubuntu’s Upstart。
我把两个例子(this和this一个)组合成一个很好的工作：

/etc/init/node-app.conf

# This is an upstart (http://upstart.ubuntu.com/) script
# to run the node.js server on system boot and make it
# manageable with commands such as
# 'start node-app' and 'stop node-app'
#
# This script is to be placed in /etc/init to work with upstart.
#
# Internally the 'initctl' command is used to manage:
# initctl Help
# initctl status node-app
# initctl reload node-app
# initctl start node-app

description "node.js forever server for node-app"
author      "Remco Overdijk <remco@maxserv.nl>"
version "1.0"

expect fork

# used to be: start on startup
# until we found some mounts weren't ready yet while booTing:

start on started mountall
stop on shutdown

# Automatically Respawn:
respawn
respawn limit 99 5

env HOME=/home/user/node-app-dir

script
    # Not sure why $HOME is needed,but we found that it is:
    export HOME=$HOME
    chdir $HOME
    exec /usr/local/bin/node server.js > logs/node.log &
end script

#post-start script
#   # Optionally put a script here that will notifiy you node has (rE)started
#   # /root/bin/hoptoad.sh "node.js has started!"
#end script

作为Kevin wisely mentions in his article，以root身份运行节点是不明智的，因此，当我们下周迁移到新服务器时，我们将更改为exec sudo -u www-data /usr/local/bin / node。

所以，永远由节点server.js自动启动，由upstart启动，并监视崩溃和文件更改，保持整个设置运行，只要我们想要的。

我希望这有助于任何人。