server-setup

List of useful resources & commands i use to setup an ubuntu server

Initial Ubuntu Setup

• Initial Server Setup with Ubuntu 18.04
• How to Set Up SSH Keys on Ubuntu 18.04

Ensure which init system is being used

• Recent versions of Linux tend to use systemd (which uses the systemctl command), while older versions of Linux tend to use System V init (which uses the service command). If you are unsure which init system your platform uses, run the following command:

ps --no-headers -o comm 1

Check Running Processes

netstat -tulpn

Update Server Timezone

dpkg-reconfigure tzdata # Update timezone interactively
service cron restart # need to restart cron service if you've updated timezones
timedatectl # Validate if set properly

LAMP/LEMP

• How To Install Linux, Nginx, MySQL, PHP (LEMP stack) on Ubuntu 18.04

Nginx

• How To Install Nginx on Ubuntu 18.04
• Add Brotli support to Nginx on Ubuntu 18.04
• How To Set Up Password Authentication with Nginx on Ubuntu 14.04

Let's Encrypt

• How To Secure Nginx with Let's Encrypt on Ubuntu 18.04
• Secure Nginx with Let's Encrypt on Ubuntu 18.04

Useful Commands

# To obtain a certificate
certbot --nginx -d weoneapp.com -d www.weoneapp.com

# To check renewal
certbot renew --dry-run

# To check all certificates
certbot certificates

# Certbot issues: once the certificate is auto renewed we also have to reload the nginx service.
sudo nano /etc/cron.d/certbot

0 */12 * * * root test -x /usr/bin/certbot -a \! -d /run/systemd/system && perl -e 'sleep int(rand(43200))' && certbot -q renew --renew-hook "sudo systemctl reload nginx"

Composer

• How To Install and Use Composer on Ubuntu 18.04

composer install --optimize-autoloader --no-dev

Wordpress

• How To Install WordPress with LEMP on Ubuntu 18.04
• Integrating AWS S3 & Cloudfront With Wordpress
• Install WordPress with Ubuntu 18.04, NGINX, MariaDB and PHP 7.4
• Setup Your Wordpress Site The Right Way

NodeJS

• Setting up an HTTPS site using Nodejs, AWS EC2, Nginx, Let's Encrypt, and Namecheap - Zeevo
• How To Set Up a Node.js App for Production on Ubuntu 18.04

PM2 Commands

# start & reload app with conf file
pm2 start ecosystem.config.js
pm2 reload ecosystem.config.js --update-env

# start & repload app without conf file
pm2 start app.js -i max --name example-api
pm2 reload app.js -i max --name example-api --update-env

# to auto start PM2 on System boot
pm2 startup

# to save the current running application state on system boot
pm2 save

# Install pm2-logrotate
pm2 install pm2-logrotate

MongoDB

• Install MongoDB Community Edition on Ubuntu — MongoDB Manual

Useful Commands

Mongo config file : /etc/mongod.conf
Mongo Logs : /var/log/mongodb
Mongo Data Dir : /var/lib/mongodb

sudo systemctl start mongod
systemctl status mongod
mongod --port 27017 --dbpath /var/lib/mongodb

# If (code=exited, status=14)
chown -R mongodb:mongodb /var/lib/mongodb
chown mongodb:mongodb /tmp/mongodb-27017.sock

# Create user
> use admin
> db.createUser({user: "weOadmin",pwd: passwordPrompt(),roles:[{role: "userAdminAnyDatabase", db: "admin" },"readWriteAnyDatabase"]})
> db.createUser({user:'weOapi', pwd: passwordPrompt(), roles:[{db:'movies', role:'readWrite'}]})

# Import a single collection
> mongoimport --db movies --collection beta_users_list beta_users_list.json --username weOapi --password secretPassword

# Import a full dump
> mongorestore dump/ -u=weOapi

# Take DB Backup
> mongodump -d movies -o back_11_aug -u weOapi -p 'secretPassword'
> cd back_11_aug && tar -cvzf movies.tar.gz weone/

Postgres

• How To Install PostgreSQL on Ubuntu 20.04 [Quickstart]

Redis

• How To Install and Secure Redis on Ubuntu 18.04

Useful Commands

# Manage Service
systemctl status redis.service
systemctl start redis.service
systemctl stop redis.service
systemctl restart redis.service

# Update config
nano /etc/redis/redis.conf

# Use Password
redis-cli
auth <password>

AWS EC2 Extending a Volume

• Extending a Linux file system after resizing a volume - Amazon Elastic Compute Cloud

MySQL SSH Tunneling

• Connecting to MySQL Remotely Using AutoSSH and SSH Tunneling

# DEBUGGING - YOU SHOULD SEE autossh sending a request every ServerAliveInterval seconds.
AUTOSSH_DEBUG=1 autossh -M 0 -N [email protected] -o "ServerAliveInterval 10" -o "ServerAliveCountMax 3" -L 6666:localhost:3306 -vvv

ps aux | grep ssh # Check SSH process is running
ps aux | grep autossh # Check AutoSSH process is running

# Main command
autossh -f -M 0 -N [email protected] -o "ServerAliveInterval 10" -o "ServerAliveCountMax 3" -C -L 3306:localhost:3306

Cronjobs

crontab -l # For listing
crontab -e # For editing

Configure logrotate for custom cron logs

nano /etc/logrotate.d/cronjobs
/var/log/cron-*.log {
    daily
    missingok
    rotate 10
    compress
    notifempty
    size 3M
}

Contributions

Welcoming more setup instructions, resources & commands.

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That's all Folks. Enjoy.