VirtualBox Troubleshooting Tips

Kernel Driver Not Installed (rc=-19008) (For Mac Users) Go to System Preferences / Security & Privacy and Click “Allow” in the window below: This kernel requires an x86-64 CPU, but only detected an i686 CPU. Enable Virtualization Extensions Make sure you have VT-x (for Intel processors) or AMD-v (for AMD processors) enabled in your physical … Read more

SSH Login Without Password (Linux)

Public key authentication can allow you to log into remote systems via SSH without a password.  Even though you will not need a password to log into a system, you will need to have access to the key.  Be sure to keep your key in a secure location. Here is an example of creating a passwordless … Read more

3 Quick and Easy Ways to Get Access to a Shell Account So You Can Start Learning Linux Today

It’s one thing to read about Linux, but it’s another thing entirely to use it. If you are just getting started or have some newfound Linux knowledge that you would like to put to the test, you’ll need a shell account. Luckily, getting an account on a Linux server is fairly easy. Web Hosting Shell … Read more

How to Configure MySQL Master-Slave Replication on Ubuntu Linux

  Master Server Configuration Install MySQL Server: sudo apt-get install -y mysql-server Add the following to /etc/mysql/my.conf: bind-address = 10.11.12.101 server-id = 1 log_bin = /var/log/mysql/mysql-bin.log Restart MySQL: sudo service mysql restart Create a replication user: mysql -u root CREATE USER ‘repl’@’%’ IDENTIFIED BY ‘slavepassword’; GRANT REPLICATION SLAVE ON *.* TO ‘repl’@’%’; exit Create a … Read more