Practical Linux DevOps: Building a Linux Lab for Modern Software Development

Description

Table of Contents About the Author About the Technical Reviewer Introduction Chapter 1: Gather Your Hardware The Basics: What You’ll Need to Build Your Linux Lab Using New Equipment for Your Lab CPU Core Considerations Memory Considerations Storage Considerations Using Old PCs and Laptops for Your Linux Lab Raspberry Pis and IoT Devices Building Your Network Managed vs. Unmanaged Switches Using Your ISP Router Deploy Managed and Unmanaged Switches Use Network Bridges and Bonds to Improve Connectivity Tips for Avoiding Common Hardware Headaches Reserve IP Address Pools Now, Not Later Test and Document Your Configurations Conclusion Chapter 2: Setting Up a Virtual Environment About the Proxmox Virtualization Environment (PVE) Set Up Proxmox Post-install Configurations Prepare a Single-NIC Network Setup: VLAN-Aware Prepare a Dual-NIC Network Setup: VLAN-Aware Additional Storage Considerations Thinking Ahead to Clustering Deploy Your First VM Server Replication with Cloning and Templates Deploy an LXC Template Container Set Up KVM Check for Virtualization Support Install KVM and Related Utilities Set Up Bridged Networking on AlmaLinux, Fedora, and openSUSE Set Up Bridged Networking on Debian and Ubuntu Desktops Set Up a Linux Bridge Using NetworkManager Set Up a Bridge Network with Netplan (Ubuntu) Run virt-manager and Create Your First KVM VM Command-Line Deployments The Proxmox qm Command The KVM virt-install Command Conclusion Chapter 3: Set Up a DNS Server Why It Matters Planning Your Network Work with the Gear You Have Will You Have Multiple Networks (Dual-Homed)? What Domain Name Will You Use? Reserving Pools of Addresses for Static and DHCP IP Addresses Configure Your Routers and Switches Add Internet Access to Your Private Network Switch To DHCP or Not to DHCP Deploy a VM to Host Your DNS Server Using a Proxmox LXC Template Install a Base Linux Template Enable a Second Network Interface Set Up Bind Configure named.conf Check Your DNS Configurations Create a Forward Zone File Create a Reverse Zone File Set Up an Optional DNS Slave Server Create a Second Host Set Up the DNS Slave Zone Entries Test Your DNS Slave Graphical DNS Deployments and Management Conclusion Chapter 4: Setting Up an Email Server Set Up a DNS Server to Handle Email Install Postfix and Dovecot Install Postfix Install Dovecot Mail Server Security Considerations Initial Email Service Test Install Sendmail Install mailutils Test Sending and Receiving Mail Set Up an Email Client to Use the Email Server Install Postfix and Dovecot in a Docker Container Conclusion Chapter 5: Building a LAMP Stack: Apache and PHP Why LAMP? Configure a Web Server VM and Install the Packages Update Your DNS Settings to Add Websites Install the Core LAMP Packages Create Two Web Server Directories Define Two Different Websites in Apache Finalize Settings for the First Website Configure Apache to Serve Up the Website Properly Create and Enable the Second Website Take a Snapshot to Preserve Your Configuration Use PHP with Your Website Test the PHP Installation Install RainLoop Webmail Set Up RainLoop Set RainLoop Permissions Configure RainLoop via the Admin Panel Deploy Apache, PHP, and RainLoop as Docker Containers How the Containers Interact Prepare the Docker Host Create a Docker Context for RainLoop Add Additional Docker Containers to the RainLoop Application Start the Multicontainer RainLoop Docker Application Troubleshoot the Docker Deployment Conclusion Chapter 6: Installing MariaDB and Creating a Simple Web Application Set Up and Log In to MariaDB Basic SQL Commands Create MariaDB Users and Set Permissions Create a Test MariaDB Database Create and Populate a Database Table Add Data to a Table Update Table Entries Delete Table Entries Read MariaDB Data with PHP Containerize It Create the PHP Container Create MariaDB and Adminer Launch Your Containerized Stack Try Out Adminer Conclusion Chapter 7: Web Server Alternatives Deploy WordPress Create a WordPress System User Finish the WordPress Installation Install and Configure NGINX Manually Install NGINX Configure NGINX Install NGINX Using a Proxmox Template When a Little HTTP Is All You Need Python 3 http.server Use the PHP CLI Built-In Server Run php-cli in a Container Conclusion Chapter 8: Containerizing and Automating Your Deployments Thinking in terms of Containers and Microservices Deploy an NGINX Container Automate Your NGINX Deployment Automate with Ansible Ansible Playbook Example Apply the NGINX Playbook Automate NGINX with Chef Create a Chef Cookbook and Recipes Create a Chef Recipe Create Templates Create a Chef InSpec Profile Apply and Test Your Chef Configuration Test with Test Kitchen Conclusion Chapter 9: Server Management and Maintenance A Closer Look at Webmin Deploy Webmin with Chef Verify Your Webmin Installation Set Up Webmin for Multiple-Server Management Add Other Webmin Servers Add Cluster Capabilities Test Some Cluster Actions A More DevOps Way to Analyze Systems Use Chef InSpec to Scan Systems Apply a Linux Benchmark Profile Create an InSpec Waiver File Other Ways to Apply InSpec Profiles Apply an InSpec Profile via the Chef Supermarket Create and Apply Your Own InSpec Profile Some Useful Backup Tools Set Up Proxmox Replication Back Up MariaDB Data Use Git to Store Your Code Conclusion Chapter 10: Extend Your DevOps Capabilities with Git Get Started with Git Create a GitHub Account The Advantage of SSH for Pushing Create a New Git Repo Create Some Content Share Your Code Create a GitLab Host Generate an SSL Key Use Your New GitLab Repo Other GitLab Capabilities A Bit on CI/CD Create a GitLab Runner Register Your Runner with Your GitLab Instance Create a Pipeline Conclusion Chapter 11: Automate System Deployments with Terraform Install Terraform A Terraform Example with Docker Use Git to Track Your Work Terraform Your First Bit of Infrastructure Use Terraform with Proxmox Configure Proxmox to Work with Terraform Create a variables.tf File Create Your LXC with Terraform Make Updates or Destroy It All Conclusion Index