Linux server administration/Performance and Troubleshooting


 * Performance tools:
 * memory: vmstat, free, sar -r
 * Disk tools: ,  ,  ,  ,  ,   and
 * Network: ntop, nmap, ping, fping, ncat, mtr, traceroute, tracepath
 * Kernel: perf, strace, ftrace, Dtrace
 * cgroups and docker: systemd-cgtop ,
 * Troubleshooting tools:,   ,  , sosreport and