Apparently Forever was popular for some time until it was displaced by PM2, a “Production process manager for Node.js / io.js applications” Node.js has its own collection of application “management” utilities you know, those helper utilities that aim to provide an “environment” in which to run your application. I like to think of myself as a “full-stack developer”, so if I need to learn a new package manager and all of its quirks, so be it. A new framework is nothing without a package manager that it can call its own, thus the Node.js world gives us the Node Package Manager, or npm.
Every last one is a “package manager” of some sort, aimed at making your life easy, automagically downloading and installing software along with all of its various dependencies onto your system. What do the following have in common: brew, apt-get, rpm, gem, easy_install, pip. Of course, the Node.js community is also reinventing the wheel in other areas as well. Reading the Node.js hype online one would think event-driven callback execution was invented in the 21st century.
The venerable X system is built upon an event loop. Python developers have had the Twisted framework for years.
When you develop iOS applications you’re developing in an event-driven environment. I didn’t really ask for JavaScript on the server, and event-driven programming is not new. JavaScript on the server! Event-driven programming! Everything is asynchronous and nothing blocks! Okay, great. So along comes Node.js, which we can all agree is the new hotness. In fact, a lot of people go out of their way to articulate why JavaScript sucks. I have never met anyone who says “Me? I love JavaScript!” Well, perhaps a web UI developer whose only other “language” is CSS or HTML. I know plenty of developers who enjoy programming in Objective-C, Python, Ruby, etc. Semicolons are optional, kind of, but not really. Nothing about the language is appealing to me, whether its the rules about scoping and the use of var or the bizarre mechanism by which classes are declared (not to mention there are several ways). I hate JavaScript, even more so than PHP. So it comes as no surprise to myself that at some point I’d start looking at Node.js and JavaScript. info : 'myapp' start: /etc/init.As I’ve said before, I’m a bit of a whore when it comes to learning new languages and development frameworks. Kill -9 `pgrep myapp` tail -f /var/log/monit.logĪ few seconds later the following entries appeared: Now what happens if the process myapp dies? Let's try: As this was previously set to 30 (seconds), this means 5 cycles = 150 seconds.
=> supervisord.log myapp will then be unmonitored.Ī cycle in this case is the "check interval" defined in /etc/monit/monitrc by the "set daemon" option. But when I started the process with supervisorctl, I got this: I installed supervisor, created the config file for the and defined the relevant settings. Today I tried to use supervisor to control and supervise the state of a process - a process which should automatically be restarted in case of a failure. Published on February 26th 2016 - Listed in Linux Supervision of an application (daemon process) with monit