Chapter 4
Linux Troubleshooting and Diagnostics
THE FOLLOWING COMPTIA LINUX+ EXAM OBJECTIVES ARE COVERED IN THIS CHAPTER:
4.1 Given a scenario, analyze system properties and remediate accordingly
- Network monitoring and configuration
- Latency
- Bandwidth
- Throughput
- Routing
- Saturation
- Packet drop
- Timeouts
- Name resolution
- Localhostvs. Unix socket
- Adapters
- RDMA drivers
- Interface configurations
- Commands
nmapnetstatiftoprouteiperftcpdumpipset
- Wireshark
tshark
netcattraceroutemtrarpnslookupdighostwhoispingnmcliiptracepath
- Latency
- Storage monitoring and configuration
iostatioping- I/O scheduling
cfqnoopdeadline
dudfLVM toolsfsckpartprobe
- CPU monitoring and configuration
/proc/cpuinfouptimeloadaveragesarsysctl
- Memory monitoring and configuration
swaponswapoffmkswapvmstat- Out of memory killer
- free
/proc/meminfo- Buffer cache output
- Lost root password
- Single user mode
- Network monitoring and configuration
- 4.2 Given a scenario, analyze system processes in order to...
