Monitoring our Go API server with Supervisord

It is fine that Nginx is sitting in front of our Go API server, it just proxies a port. However, sometimes that web application may stop due to the operating system restarting or crashing. Whenever your web server gets killed, it is someone's job to automatically bring it back to life. Supervisord is such a task runner. To make our API server run all the time, we need to monitor it. Supervisord is a tool that can monitor running processes (system) and can restart them when they were terminated.

Installing Supervisord

We can easily install Supervisord using Python’s pip command. On Ubuntu 16.04, just use the apt-get command:

sudo apt-get install -y supervisor

This installs two tools, supervisor and supervisorctl. Supervisorctl is intended to control the supervisor and add tasks, restart tasks, and so on. Let us use the sample basicServre.go program we created for illustrating Nginx for this too. Install the binary to the $GOPATH/bin directory. Here...