Linux server administration/Performance and Troubleshooting

Performance tools:
- - memory: vmstat, free, sar -r
- Disk tools: iostat, iotop, hdparm, sar -d, ionice, hdparm and dd
- Network: ntop, nmap, ping, fping, ncat, mtr, traceroute, tracepath
  - - Kernel: perf, strace, ftrace, Dtrace
- cgroups and docker: systemd-cgtop^[1], docker stats
Troubleshooting tools: cfg2html, ansible-cmdb , sysreport, sosreport and acct

See also