Use Log.io in Node.js to monitor logs in real time in the browser (equivalent to the tail -f command)_node.js

Today, I took some time to browse node.js. Haha, I read an introductory article (http://www.nodebeginner.org/index-zh-cn.html). I feel that I am getting started, but There is a sentence in it that is quite enlightening:

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However, these are all front-end technologies after all. Although it always feels good to use jQuery when you want to enhance the page, in the end, you are at most a JavaScript user, not a JavaScript developer. Then, along comes Node.js, server-side JavaScript, how cool is that? So, you think it’s time to pick up the familiar yet unfamiliar JavaScript again. But wait, writing Node.js applications is one thing; understanding why they are written the way they are written means — you need to know JavaScript. This time it's for real.
Yes, this time we are going to play it for real. .

By the way, I saw a good thing log.io, the official explanation is:

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Real-time log monitoring in your browser
Powered by node.js socket.io

Real-time log monitoring, we may think of tail -f under Linux, log.io has roughly the same meaning, but it is much more powerful than tail -f. This thing is also based on C/S architecture.

The following is a practical demonstration:

1. Installation

This thing depends on nodejs. Let’s install nodejs first and refer to the official installation method: (http://nodejs.org/download/)

I am using the mac brew installation method here:

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brew install nodejs

Or use yum:

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yum install nodejs

After that we can use npm to install log.io

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npm install -g log.io --user "chenqing"

After installation, start the server (no configuration required):

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log.io-server

Configure the client afterwards

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vim ~/.log.io/harvester.conf

exports.config = {
nodeName: "application_server",
logStreams: {
test: [
"/Users/chenqing/test.log"
]
},
server: {
host: '0.0.0.0',
port: 28777
}
}

Start the client: log.io-harvester

Let’s test it out:

First go to the command line

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[ chenqing@Qing ~ ] for i in {1..1000};do echo `date ` >> test.log ;done

Open the browser: http://localhost:28778/