Introduction xxx Part I: Hardware and System Confi guration CHAPTER 1 Explain Linux boot process concepts 1 Boot Loaders 1 Boot Options 3 File Locations 6 Boot Modules and Files 7 Kernel Panic 9 CHAPTER 2 Given a scenario, install, confi gure, and monitor kernel modules 11 Commands 11 Files 15 CHAPTER 3 Given a scenario, confi gure and verify network connection parameters 17 Diagnostic Tools 18 Configuration Files 28 Bonding 34 CHAPTER 4 Given a scenario, manage storage in a Linux environment 37 Basic Partitions 38 Filesystem Hierarchy 40 Device Mapper 41 Tools 44 Location 54 Filesystem Types 58 CHAPTER 5 Compare and contrast cloud and virtualization concepts and technologies 59 Templates 60 Bootstrapping 62 Storage 63 Network Considerations 65 Types of Hypervisors 66 Tools 67 CHAPTER 6 Given a scenario, confi gure localization options 69 File Locations 70 Commands 70 Environment Variables 73 Character Sets 75 UTF-8 75 Part II: Systems Operation and Maintenance CHAPTER 7 Given a scenario, conduct software installations, confi gurations, updates, and removals 77 Package Types 78 Installation Tools 78 Build Tools 86 Repositories 88 Acquisition Commands 89 CHAPTER 8 Given a scenario, manage users and groups 93 Creation 94 Modification 94 Deletion 96 Queries 96 Quotas 98 Profiles 102 Important Files and File Contents 106 CHAPTER 9 Given a scenario, create, modify, and redirect fi les 109 Text Editors 110 File Readers 114 Output Redirection 117 Text Processing 123 File and Directory Operations 129 Bonus: regex 141 CHAPTER 10 Given a scenario, manage services 143 Systemd Management 144 Systemd-analyze blame 148 Unit Files 148 SysVinit 152 CHAPTER 11 Summarize and explain server roles 157 NTP 158 SSH 158 Web 159 Certificate Authority 159 Name Server 159 DHCP 160 CHAPTER 12 Given a scenario, automate and schedule jobs 165 cron 165 at 165 crontab 167 fg 170 bg 171 & 171 kill 171 Ctrl-c 172 Ctrl-z 172 nohup 172 CHAPTER 13 Explain the use and operation of Linux devices 173 Types of Devices 174 Monitoring and Configuration Tools 176 File Locations 182 Hot Pluggable Devices 185 CHAPTER 14 Compare and Contrast Linux Graphical User Interfaces 187 Servers 187 GUI 188 Remote Desktop 189 Accessibility 192 Part III: Security CHAPTER 15 Given a scenario, apply or acquire the appropriate user and/or group permissions and ownership 193 File and Directory Permissions 194 Context-Based Permissions 203 Privilege Escalation 209 User Types 211 CHAPTER 16 Given a scenario, confi gure and implement appropriate access and authentication methods 213 PAM 214 SSH 221 TTYs 228 PTYs 230 PKI 230 VPN as a Client 231 SSL/TLS 232 Transport Mode 232 Tunnel Mode 232 IPSec 232 DTLS 233 CHAPTER 17 Summarize security best practices in a Linux environment 235 Boot Security 236 Additional Authentication Methods 237 Multifactor Authentication 237 Importance of Disabling Root Login via SSH 239 Password-Less Login 239 Chroot Jail Services 240 No Shared IDs 240 Importance of Denying Hosts 240 Separation of OS Data from Application Data 241 Change Default Ports 241 Importance of Disabling or Uninstalling Unused and Unsecure Services 242 Importance of Enabling SSL/TLS 243 Importance of Enabling auditd 243 CVE Monitoring 243 Discouraging Use of USB Devices 243 Disk Encryption 244 Restrict cron Access 244 Disable Ctrl-Alt-Del 244 Add Banner 245 MOTD 245 CHAPTER 18 Given a scenario, implement logging services 247 Key File Locations 247 Log Management 249 CHAPTER 19 Given a scenario, implement and confi gure Linux fi rewalls 257 Access Control Lists 258 Technologies 259 IP Forwarding 263 Dynamic Rule Sets 263 Common Application 265 CHAPTER 20 Given a scenario, backup, restore, and compress fi les 267 Archive and Restore Utilities 268 Compression 269 Backup Types 272 Off-Site/Off-System Storage 274 Integrity Checks 275 Part IV: Linux Troubleshooting and Diagnostics CHAPTER 21 Given a scenario, analyze system properties and remediate accordingly 277 Network Monitoring and Configuration 278 Storage Monitoring and Configuration 287 CPU Monitoring and Configuration 289 Memory Monitoring and Configuration 292 Lost Root Password 295 CHAPTER 22 Given a scenario, analyze system processes in order to optimize performance 297 Process Management 297 Process States 297 Priorities 298 Kill Signals 299 Commands 300 PIDs 305 CHAPTER 23 Given a scenario, analyze and troubleshoot user issues 307 Permissions 307 Access 309 Authentication 309 File Creation 310 Insufficient Privileges for Authorization 312 Environment and Shell Issues 312 CHAPTER 24 Given a scenario, analyze and troubleshoot application and hardware issues 313 SELinux Context Violations 314 Storage 314 Firewall 317 Permission 318 Service Accounts 319 Group Memberships 319 Dependencies 319 Troubleshooting Additional Hardware Issues 320 Part V: Automation and Scripting CHAPTER 25 Given a scenario, deploy and execute basic BASH scripts 327 Shell Environments and Shell Variables 328 #!/ bin/bash 332 Sourcing Scripts 332 Directory and File Permissions 333 Extensions 333 Commenting 333 File Globbing 334 Shell Expansions 334 Redirection and Piping 336 Exit Codes 336 Metacharacters 336 Positional Parameters 337 Looping Constructs 337 Conditional Statements 338 Escaping Characters 340 CHAPTER 26 Given a scenario, carry out version control using Git 343 Arguments 343 Files 349 CHAPTER 27 Summarize orchestration processes and concepts 351 Agent 351 Agentless 352 Procedures 352 Attributes 352 Infrastructure Automation 352 Infrastructure as Code 352 Inventory 353 Automated Configuration Management 353 Build Automation 353 APPENDIX Create your own journal 355 9780135591840, TOC, 7/19/19.