https://github.com/yanliu1111/docker-devops-with-nodejs-express
🐳 Learn the core fundamentals of Docker by building a Node/Express app with a Mongo & Redis database.
https://github.com/yanliu1111/docker-devops-with-nodejs-express
docker express mongodb nginx nodejs redis
Last synced: 2 months ago
JSON representation
🐳 Learn the core fundamentals of Docker by building a Node/Express app with a Mongo & Redis database.
- Host: GitHub
- URL: https://github.com/yanliu1111/docker-devops-with-nodejs-express
- Owner: yanliu1111
- Created: 2023-04-20T03:25:22.000Z (about 3 years ago)
- Default Branch: main
- Last Pushed: 2023-05-21T01:24:54.000Z (about 3 years ago)
- Last Synced: 2025-02-27T05:49:59.287Z (over 1 year ago)
- Topics: docker, express, mongodb, nginx, nodejs, redis
- Language: JavaScript
- Homepage:
- Size: 134 KB
- Stars: 0
- Watchers: 1
- Forks: 0
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
Awesome Lists containing this project
README
🐳 Docker learning on the wave 🌊
## Introduction
> **Learn the core fundamentals of Docker by building a Node/Express app with a Mongo & Redis database.**
Tech Stack:
- Docker image
- Dockerfile
- Docker Compose
- Nodejs
- Express
- MongoDB
- Redis
- Nginx
## Work Done:
1. ✅ In Docker HUB, install Nodejs Docker image
2. ✅ Install MongoDB Docker image
Just curiosity the reason 👉 when I follow the docker doc to use mongodb image, and want to see my database, I used `mongo -u "mongoadmin" -p "mypassword"` , which didn't work in my bash, THEN I used `mongosh` and it worked. So I want to know the difference between `mongo` and `mongosh`.
```bash
mydb> use admin
switched to db admin
admin> db.auth("username", "password")
```
The difference is `mongo` is a shell, and `mongosh` is a shell for MongoDB with more features and better syntax.🤦♀️
📗 Update-note: In index.js, starting with Mongoose version 6, you should not specify that as an option. It will be handled automatically. `useNewUrlParser`, `useUnifiedTopology`, `useFindAndModify`, and `useCreateIndex` are no longer supported options. Mongoose 6 always behaves as if `useNewUrlParser`, `useUnifiedTopology`, and `useCreateIndex` are true, and `useFindAndModify` is false.
3. ✅ Install Redis
- Sigup and Signin in RedisLabs
- Troubleshooting in Redis Version 4.0.9
the error I got
```bash
Mon, 01 May 2023 04:41:24 GMT express-session deprecated undefined resave option; provide resave option at file:/app/index.js:48:3
Mon, 01 May 2023 04:41:24 GMT express-session deprecated undefined saveUninitialized option; provide saveUninitialized option at file:/app/index.js:48:3
Server listening on port 3000
MongoDB connected successfully
correct!!!!!!!
Error: The client is closed
at Commander._RedisClient_sendCommand (/app/node_modules/@redis/client/dist/lib/client/index.js:490:31)
at Commander.commandsExecutor (/app/node_modules/@redis/client/dist/lib/client/index.js:188:154)
at BaseClass. [as set] (/app/node_modules/@redis/client/dist/lib/commander.js:8:29)
at Object.set (file:///app/node_modules/connect-redis/dist/esm/index.js:22:34)
at RedisStore.set (file:///app/node_modules/connect-redis/dist/esm/index.js:69:39)
at Session.save (/app/node_modules/express-session/session/session.js:72:25)
at Session.save (/app/node_modules/express-session/index.js:406:15)
at ServerResponse.end (/app/node_modules/express-session/index.js:335:21)
at ServerResponse.send (/app/node_modules/express/lib/response.js:232:10)
at ServerResponse.json (/app/node_modules/express/lib/response.js:278:15)
```
**Solution 1st** with Redis Version 4.0.9
```bash
const { createClient } = require('redis');
const { REDIS_HOST_URL } = require('../config');
const client = createClient({ url: REDIS_HOST_URL });
(async () => {
await client.connect();
})();
client.on('connect', () => console.log('::> Redis Client Connected'));
client.on('error', (err) => console.log('<:: Redis Client Error', err));
```
Cannot solve the problem, I got infinite loop for server listening on port 3000
**Solution 2nd** with Redis Version 3.0.2, problem solved 😶
Here is the reference I used [link](https://stackoverflow.com/questions/70145795/node-redis-does-not-work-on-my-windows-computer-even-though-the-server-is-up-and)
4. ✅ Nginx for Load balancing to multiple node containers
- ✅ 2 node instances (port3000) connected to Nginx
- ✅ Express CORS configuration
**Conclusions**: This repo is done, all learning and works flow above, the reason I choose this freeCodeCamp [Tutorial](https://www.youtube.com/watch?v=9zUHg7xjIqQ&ab_channel=freeCodeCamp.org) because it taught docker compose with many packages (node, express, mongodb, redis, nginx) and how to run 2 node instances
🤔 **Probably** I don't strongly recommend this tutorial, because the Redis version is version3, I got many errors in the work process, I focused on troubleshooting on most learning time, still have one error leave there, I markered in comment.
**If you are interested in this tutorial**
To get started, clone the repository and install the dependencies. Code works good.
Start the docker containers:
```bash
docker-compose -f docker-compose.yml -f docker-compose.dev.yml up -d --build
or keep the volume
docker-compose -f docker-compose.yml -f docker-compose.dev.yml up -d --build -V
```
Check the logs:
```bash
docker logs node-docker-node-app-1 -f
```
Stop the docker containers:
```bash
docker-compose -f docker-compose.yml -f docker-compose.dev.yml down
```
Not finished parts:
5. Dev to Prod <-Jump here, because have to installing docker on Ubuntu(Digital Ocean), and deploy to Digital Ocean
6. Automating <- Setting in Digital Ocean
## What next?
Docker learning never end...🐳