解決 CLOSE_WAIT問題

netstat -n | awk '/^tcp/ {++S[$NF]}END{for(a in S) print a, S[a]}'

sysctl -w net.ipv4.tcp_keepalive_time=7200
sysctl -w net.ipv4.tcp_keepalive_probes=9
sysctl -w net.ipv4.tcp_keepalive_intvl=75