Note: PM2 own code quality is bad and cluster_mode is not production ready. I would not recommend to use PM2, anywhere. You have been warned.

How to use a different ssh port for PM2

Since pm2-deploy directly forward the host string to ssh, you can simply use:

inside the configuration file.

How to use cluster_mode in PM2

Make your app instances listen on port 8000 and pm2 will load-balance any request on 8080 to your app instances.

Troubleshooting pm2 deploy

pm2-deploy outputs its log into /tmp/pm2-deploy.log so if you don't understand why pm2 deploy is not working, a tail -f /tmp/pm2-deploy.log might help.

• UML diagrams are not descriptive as they should be, "memberName" should not be written multiple times as class attributes
• The part where the author said that singleton could not be created in JavaScript in a OOP way is plain wrong
• In the Functional Programming chapter, JavaScript examples could have been written better. Using a for loop instead of map (IE9+) is disappointing (to say the least!)
• The MV* chapter does not follow the Separation of Concerns principle well enough
• View initialization and rendering are done inside the constructor (they should not be)
• Model attributes are too often manipulated inside the controller
• State information is duplicated (e.g. IsValid in ValidationResult)
• A dispose (or release) method is missing for clean life-cycle management
• bind (IE9+) should be used instead of the old _this workaround