TCP: time wait bucket table overflow解决方法

收到一台web服务器告警消息，查看/var/log/message日志信息如下所示：

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该台服务器每日有3kw的pv，压力有些大。 服务器的TCP连接数，超出了内核定义最大数。文章源自运维生存时间-https://www.ttlsa.com/yun_wei_an_li/tcp_-time-wait-bucket-table-overflow-solution/

修改内容参数 /proc/sys/net/ipv4/tcp_max_tw_buckets文章源自运维生存时间-https://www.ttlsa.com/yun_wei_an_li/tcp_-time-wait-bucket-table-overflow-solution/

# echo 20000 > /proc/sys/net/ipv4/tcp_max_tw_buckets

写入/etc/sysctl.conf使之永久生效文章源自运维生存时间-https://www.ttlsa.com/yun_wei_an_li/tcp_-time-wait-bucket-table-overflow-solution/

net.ipv4.tcp_max_tw_buckets = 20000文章源自运维生存时间-https://www.ttlsa.com/yun_wei_an_li/tcp_-time-wait-bucket-table-overflow-solution/

# sysctl -p

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