我正在尝试设置永久监视器。
我将此添加到我的 app.js：
var forever = require('forever-monitor');
var child = new(forever.Monitor)('app.js', {
max: 3,
silent: true,
options: []
});
child.on('exit', function() {
console.log('app.js has exited after 3 restarts');
});
child.start();
但是，当我从命令行启动我的应用程序时，它会记录“app.js 在 3 次启动后退出”，但它仍然运行。这段代码应该放在哪个文件中？我是否遗漏了有关使用永久监视器的内容？
【问题讨论】：
老实说，我只使用 forever 而不要同时使用 forever-monitor （尽管我知道它在永远的文档中谈论它！）。我创建了一个名为start.js 的文件并使用node start.js 运行我的应用程序。
'use strict';
var forever = require('forever');
var child = new (forever.Monitor )('app.js', {
//options : options
} );
//These events not required, but I like to hear about it.
child.on( "exit", function() {
console.log( 'app.js has exited!' );
} );
child.on( "restart", function() {
console.log( 'app.js has restarted.' );
} );
child.on( 'watch:restart', function( info ) {
console.error( 'Restarting script because ' + info.file + ' changed' );
} );
//These lines actually kicks things off
child.start();
forever.startServer( child );
//You can catch other signals too
process.on( 'SIGINT', function() {
console.log( "\nGracefully shutting down \'node forever\' from SIGINT (Ctrl-C)" );
// some other closing procedures go here
process.exit();
} );
process.on( 'exit', function() {
console.log( 'About to exit \'node forever\' process.' );
} );
//Sometimes it helps...
process.on( 'uncaughtException', function( err ) {
console.log( 'Caught exception in \'node forever\': ' + err );
} );
【讨论】：
forever-monitor 的工作原理如下
app_fm.js
var forever = require('forever-monitor');
var child = new(forever.Monitor)('app.js', {
max: 3,
silent: true,
options: []
});
child.on('exit', function() {
console.log('app.js has exited after 3 restarts');
});
child.start();
app.js
// put in all your great nodejs app code
console.log('node app is now running');
现在从 CLI 中键入以下内容启动您的应用程序
节点app_fm
【讨论】：