Can't start unicorn, master failed to start, check stderr log for details
I dont know what’s wrong with the unicorn.rb file. my unicorn.rb config is APP_PATH = "/var/www/demo" working_directory APP_PATH stderr_path APP_PATH + "/log/unicorn.stderr.log" stdout_path APP_PATH + "/log/unicorn.stderr.log" pid APP_PATH + "/tmp/pid/unicorn.pid" running nginx successful. sudo servier nginx start sudo unicorn -c /var/www/demo/config/unicorn.rb -D The socket is the "file" that nginx and unicorn use as a channel for all communication between them. Where have you defined it? In our unicorn configs, we usually have a line like this: listen APP_PATH + "/tmp/pid/.unicorn.sock Then,