记一次网络问题排查（网络排查情况报告）

时间同步

ssh 10.100.254.50 "echo '00 0 5 * * root rdate -s time.nist.gov' >> /etc/crontab"

netstat -n | awk '/^tcp/ {++state[$NF]} END {for(key in state) print key,"\t",state[key]}'

# 查看各IP 连接数

netstat -n | awk '{item=$5;gsub(/::ffff:/,"",item);gsub(/:[0-9]*/,"",item);++S[item]} END {for(ip in S ) print ip,S[ip]}'

# 查看在线用户

netstat -an | grep "80 " | grep -v ::ffff

sed -i "s/queuePrefetch=20/queuePrefetch=500/g" cmpp-bridge*/conf/defa*