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mysql kernel: nf_conntrack version 0.5.0

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Jun 07, 2016 pm 04:45 PM

今天要检查mysql数据库时messages日志中有大量mysql kernel: nf_conntrack version 0.5.0连接信息,现在将解决方法记录下来,希望能

今天要检查mysql数据库时messages日志中有大量mysql kernel: nf_conntrack version 0.5.0连接信息,现在将解决方法记录下来,希望能帮助需要的人,注:操作系统是CentOS 6.4,具体参数和操作系统的内核有关.

日志信息:

Oct 30 22:23:02 mysql kernel: ip_tables: (C) 2000-2006 Netfilter Core Team
Oct 30 22:23:02 mysql kernel: nf_conntrack version 0.5.0 (16384 buckets, 65536 max)
Oct 30 22:23:03 mysql kernel: ip_tables: (C) 2000-2006 Netfilter Core Team
Oct 30 22:23:03 mysql kernel: nf_conntrack version 0.5.0 (16384 buckets, 65536 max)
Oct 30 22:25:25 mysql kernel: nf_conntrack version 0.5.0 (16384 buckets, 65536 max)
Oct 30 22:45:43 mysql kernel: ip_tables: (C) 2000-2006 Netfilter Core Team
Oct 30 22:45:44 mysql kernel: ip_tables: (C) 2000-2006 Netfilter Core Team
Oct 30 22:45:44 mysql kernel: nf_conntrack version 0.5.0 (16384 buckets, 65536 max)
Oct 30 22:45:45 mysql kernel: ip_tables: (C) 2000-2006 Netfilter Core Team
Oct 30 22:45:45 mysql kernel: nf_conntrack version 0.5.0 (16384 buckets, 65536 max)
Oct 30 22:49:31 mysql kernel: ip_tables: (C) 2000-2006 Netfilter Core Team
Oct 30 22:49:31 mysql kernel: nf_conntrack version 0.5.0 (16384 buckets, 65536 max)
Oct 30 22:49:32 mysql kernel: ip_tables: (C) 2000-2006 Netfilter Core Team
Oct 30 22:49:32 mysql kernel: nf_conntrack version 0.5.0 (16384 buckets, 65536 max)
Oct 30 22:49:33 mysql kernel: ip_tables: (C) 2000-2006 Netfilter Core Team
Oct 30 22:49:33 mysql kernel: nf_conntrack version 0.5.0 (16384 buckets, 65536 max)

解决方法:

1.加载模块

modprobe nf_conntrack_ipv4

2.修改内核参数

vim /etc/sysctl.conf --添加以下现行

net.nf_conntrack_max = 655360

net.netfilter.nf_conntrack_tcp_timeout_established = 10800

3.内核配置文件生效

sysctl -p

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Ubuntu 14.04下安装MySQL

《MySQL权威指南(原书第2版)》清晰中文扫描版 PDF

Ubuntu 14.04 LTS 安装 LNMP Nginx\PHP5 (PHP-FPM)\MySQL

Ubuntu 14.04下搭建MySQL主从服务器

Ubuntu 12.04 LTS 构建高可用分布式 MySQL 集群

Ubuntu 12.04下源代码安装MySQL5.6以及Python-MySQLdb

MySQL-5.5.38通用二进制安装

--------------------------------------分割线 --------------------------------------

本文永久更新链接地址：

linux

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