Uly.me

cloud engineer

Disable Host Key Checking

How to suppress typing “yes” when prompted by ssh.

#!/bin/bash
ssh-keygen -f "/home/user/.ssh/known_hosts" -R "yourdomain.com" 
ssh -o "StrictHostKeyChecking=no" -i "keys/key.pem" ubuntu@domain.com

  1. First remove old keys in the know_hosts file.
  2. Use “StrictHostKeyChecking” to suppress prompt.

Standard SSL Policy

Here’s a standard template for SSL Apache found in /etc/apache2/sites-available/default-ssl.conf.

<IfModule mod_ssl.c>
<VirtualHost _default_:443>
   ServerAdmin your-email@your-domain.com
   ServerName www.yourdomain.com
   ServerName yourdomain.com
   DocumentRoot /var/www/your-domain.com
   ErrorLog /var/www/your-domain.com/log/error.log
   CustomLog /var/www/your-domain.com/log/access.log combined
   <Directory /var/www/your-domain.com>
      Options Indexes FollowSymLinks MultiViews
      AllowOverride All
      Require all granted
   </Directory>
   SSLCertificateFile /etc/letsencrypt/live/your-domain.com/fullchain.pem
   SSLCertificateKeyFile /etc/letsencrypt/live/your-domain.com/privkey.pem
   Include /etc/letsencrypt/options-ssl-apache.conf
</VirtualHost>
</IfModule>

Enable SSL.

# Enable SSL Module
a2enmod ssl
systemctl restart apache2.service
# Enable SSL Apache Config
a2ensite default-ssl
systemctl restart apache2.service
# Alternate way to restart.
service apache2 restart

Install Go on Linux Mint 19.3

Here’s how to install Go on Ubuntu Linux Mint 19.3.

Download the latest from https://golang.org/dl/.

wget https://dl.google.com/go/go1.13.linux-amd64.tar.gz

Check the checksum.

sha256sum go1.13.linux-amd64.tar.gz

Extract the Go tarball to the /usr/local directory.

sudo tar -C /usr/local -xzf go1.13.linux-amd64.tar.gz

Edit your Bash profile to add Go’s path.

cd ~
vim ~/.profile
# Add Go's path
export PATH=$PATH:/usr/local/go/bin
# Load the profile
source ~/.profile

Check if Go is installed.

go version

Output.

go version go1.13 linux/amd64