centos - linux下php使用curl导致大量TIME_WAIT求解决

<code>netstat -an|awk '/tcp/ {print $6}'|sort|uniq -c
    173 ESTABLISHED
     43 FIN_WAIT1
     20 FIN_WAIT2
      5 LAST_ACK
      7 LISTEN
      2 SYN_RECV
      3 SYN_SENT
   1745 TIME_WAIT
</code>

<code>net.ipv4.tcp_syncookies = 1
net.ipv4.tcp_tw_reuse = 1
net.ipv4.tcp_tw_recycle = 1
net.ipv4.tcp_fin_timeout = 30
</code>

<code>error: permission denied on key 'net.ipv4.tcp_tw_reuse'
error: permission denied on key 'net.ipv4.tcp_tw_recycle'
error: permission denied on key 'net.ipv4.tcp_fin_timeout'
</code>

<code>netstat -an|awk '/tcp/ {print $6}'|sort|uniq -c
    173 ESTABLISHED
     43 FIN_WAIT1
     20 FIN_WAIT2
      5 LAST_ACK
      7 LISTEN
      2 SYN_RECV
      3 SYN_SENT
   1745 TIME_WAIT
</code>

<code>net.ipv4.tcp_syncookies = 1
net.ipv4.tcp_tw_reuse = 1
net.ipv4.tcp_tw_recycle = 1
net.ipv4.tcp_fin_timeout = 30
</code>

<code>error: permission denied on key 'net.ipv4.tcp_tw_reuse'
error: permission denied on key 'net.ipv4.tcp_tw_recycle'
error: permission denied on key 'net.ipv4.tcp_fin_timeout'
</code>