在通过脚本向mysql写入大量测试数据时,出现这个问题,记录下: https://dev.mysql.com/doc/refman/5.5/en/packet-too-large.html 修改/etc/my.cnf 文件,修改如下: 在[mysqld]下面添加: [mysqld] max_allowed_packet=16M 重启mysqld服务即可.…

参考:https://www.linode.com/docs/databases/mysql/how-to-install-mysql-on-centos-7 centos 7上没有办法使用yum install mysql等命令了: wget http://repo.mysql.com/mysql-community-release-el7-5.noarch.rpm sudo rpm -ivh mysql-community-release-el7-.noarch.rpm yum update…

This tutorial shows how you can install an Apache2 webserver on a CentOS 7.0 server with PHP5 support (mod_php) and MySQL support. LAMP is short for Linux, Apache, MySQL, PHP. 1 Preliminary Note In this tutorial I use the hostname server1.example.com…

1. 卸载mysql 查看CentOS是否已经安装mysql数据库 rpm -qa | grep mysqlrpm -qa | grep MySQL 如果有,则卸载 // --nodeps表示强制rpm -ev --nodeps mysql*yum remove MySQL-server-5.6.16-1.el6.i686yum remove MySQL-client-5.6.16-1.el6.i686// 可以通过whereis mysql查看rm /etc/my*rm /usr/bin/my…

mysql数据库用innodb引擎,mysql max_allowed_packet在my.cnf中值加大后,够一段时间,系统会莫名把这个参数的值改小. innodb_buffer_pool_size,加大这个值后,目前为止,问题得到暂时解决,可能的原因是:系统分配给mysql的内存不够…

CentOS 7的yum源中貌似没有正常安装mysql时的mysql-sever文件,需要去官网上下载   # wget http://dev.mysql.com/get/mysql-community-release-el7-5.noarch.rpm # rpm -ivh mysql-community-release-el7-5.noarch.rpm # yum install mysql-community-server 成功安装之后重启mysql服务   # service mysqld…

背景: 测试环境1台centOS机器,最近一段频繁报“ Caused by: com.mysql.jdbc.PacketTooBigException: Packet for query is too large (1354 > 1024). You can change this value on the server by setting the max_allowed_packet' variable ”, 记录解决问题的思路,最终找到问题根源:黑客入侵,总结经验. 思路: 查看max_a…

运行环境 系统版本:CentOS Linux release 7.3.1611 (Core) 软件版本:MYSQL-5.7 硬件要求:无 安装过程 1.基础配置 [root@localhost ~]# systemctl stop firewalld [root@localhost ~]# systemctl disable firewalld [root@localhost ~]# setenforce 0 [root@localhost ~]# vim /etc/sysconfig/seli…

mysql根据配置文件会限制server接受的数据包大小. 有时候大的插入和更新会受max_allowed_packet 参数限制,导致写入或者更新失败. 查看目前配置 show VARIABLES like '%max_allowed_packet%'; 显示的结果为: +--------------------+---------+ | Variable_name      | Value   | +--------------------+---------+ | max_allowed_…

原文:https://devops.profitbricks.com/tutorials/install-mysql-on-centos-7/ 1.下载mysql 在mysql官网选择适合的mysql版本(Red Hat Enterprise Linux 7 / Oracle Linux 7 for this tutorial) 点击 Download . 右键复制No thanks, just start my download.的链接. sudo rpm -Uvh http://dev.my…