091130 11:16:11 - mysqld got exception 0xc0000005 ; This could be because you hit a bug. It is also possible that this binary or one of the libraries it was linked against is corrupt, improperly built, or misconfigured. This error can also be caused…

事情要从俩月前的一个坑说起,一台新的测试服务器,新项目一元夺宝用的. 配置aws上的一台云主机,系统盘8G,一块300G的云硬盘. 拿到机器后,另一运维小哥安装php,nginx,mysql等软件. 安装完后,然忘了挂载云硬盘. 随着根分区日志越来越多,mysql数据量增大...磁盘已满,mysql自行挂了...哭.. 开发找上门来,mysql插不进去了,我连上服务器,ps -ef.. 没有进程. 尝试重启..失败. 查看错误日志..如下: 161206 08:07:41 mysqld_safe…

故障现象: mysql无法启动 1: dmesg |grep mysql [101353.820000] init: mysql post-start process (9077) terminated with status 1 [101354.650000] init: mysql main process (9113) terminated with status 1 [101354.650000] init: mysql respawning too fast, stopped 2: g…

一台MySQL服务器突然Crash了,检查进程 ps -ef | grep -i mysql 发现mysqld进程已经没有了, 检查错误日志时发现MySQL确实Crash了.具体如下所示: 注意日志中的时间: 09:49:52 UTC是UTC时间(协调世界时间) , 加上8小时就是东八区的时间17:45:52,日志前段是UTC时间,后面又是系统时间.这个需要注意! 09:49:52 UTC - mysqld got signal 11 ; This could be because you hi…

:: mysqld_safe Starting mysqld daemon with databases from /data/mysql_data -- :: [Note] Plugin 'FEDERATED' is disabled. -- :: [Note] InnoDB: Using atomics to ref count buffer pool pages -- :: [Note] InnoDB: The InnoDB memory heap is disabled -- :: [N…

转: https://blog.csdn.net/l1028386804/article/details/77199194 一.问题描述 今天在线运行的一个mysql崩溃了. 查看错误日志,如下: ----------------------------------------- 161108 11:36:45 mysqld_safe Starting mysqld daemon with databases from /usr/local/mysql/var 2017-08-15 11:36:…

select EVENT_NAME ,SUM_NUMBER_OF_BYTES_ALLOC from memory_summary_global_by_event_name order by SUM_NUMBER_OF_BYTES_ALLOC desc limit 10; memory_summary_by_account_by_event_name || memory_summary_by_host_by_event_name || memory_summary_by_thread_by_eve…

背景:MySQL-5.7.12, debian 8核16G虚拟机, 业务方反馈在某一个时间点, 出现了大量的数据库报错, 之后恢复正常; 场景:开发查看日志后, 发现在某个时间点, 应用断开了所有与数据库的连接, 几秒钟以后就恢复了;同时监控系统的内存使用率出现了异常的骤降; 3min之后收到了报警系统的信息, 内存使用率82%; 分析:第一时间的判断是网络的问题造成了应用层的连接断开了, 但是这种内存使用率骤降的现象不会是网络造成的;查看MySQL的日志, 发现MySQL实例发生了crash,…

国庆回来后,发现mysql停止服务了,没办法继续启动了.查看日志,看到: 131008 09:56:03 mysqld_safe Starting mysqld daemon with databases from /var/lib/mysql131008  9:56:03 [Warning] option 'read_buffer_size': unsigned value 1024 adjusted to 8192131008  9:56:03 [Note] Plugin 'FEDERATE…

之前用我这个机器做mysql的测试来,今天启动准备搭建一套线上的主从,结果起不来了... 错误日志: ;InnoDB: End of page dump 170807 11:37:02 InnoDB: Page checksum 1575996416, prior-to-4.0.14-form checksum 1371122432 InnoDB: stored checksum 0, prior-to-4.0.14-form stored checksum 0 InnoDB: Page lsn…

my.cnf[client] 对mysql的所有客端都生效的[mysql] 只对mysql这个命令有效了[mysqd][mysqld_multi] 多实例启动[mysqld_safe][mysqldNNNN]#[global]set SQL_SAFE_UPDATES = 1;运行一段时间,mysql参数优化1 慢查询 show variables like '%slow%';mysql> show variables like '%slow%';+------------------------…

  Preface       ibdata1 file is a shared system tablespace of innodb engine.Although we always set variable of "innodb_file_per_table" to "on" which means put the data of table into their individual ibd files.The ibdata file will still…

mysql 测试环境异常宕机 系统:\nKylin 3.3 mysql版本:5.6.15--yum安装,麒麟提供的yum源数据库版本 error日志 181218 09:38:52 mysqld_safe Starting mysqld daemon with databases from /home/data/mysqldata/3306/data2018-12-18 09:42:56 12390 [Note] Plugin 'FEDERATED' is disabled.2018-12-18…

问题发生背景 问题实例之前使用的是percona server,是安装pmm镜像自带的数据库,之后通过mysqldump迁移到了MySQL server,目前是只有有pmm server 访问pmm库,MySQL server就crash,并通过守护进程mysqld_safe 自动重启,crash 集尝试重启的一部分信息如下 :: UTC - mysqld got signal ; This could be because you hit a bug. It is also possible…

事发背景 测试环境更换数据盘,直接采取在线将数据目录暴力拷贝到新盘,然后将原服务关闭,启用新盘. 服务是可以正常启动的,但是没多会开发就反应服务down了,错误日志输出 -- :: InnoDB: Failing assertion: purge_sys->iter.trx_no <= purge_sys->rseg->last_trx_no InnoDB: We intentionally generate a memory trap. InnoDB: Submit a deta…

原文 https://blog.csdn.net/l1028386804/article/details/77199194 1. mysql崩溃 ----------------------------------------- :: mysqld_safe Starting mysqld daemon with databases from /usr/local/mysql/var -- :: [Warning] TIMESTAMP with implicit DEFAULT value is…

 删除./mysql/var下的所有数据后,怎么重新安装初始数据库? (1)进入./mysql/bin目录下,执行脚本./mysql_install_db: (2)执行完(1)后,此时会在./mysql/var目录下创建两个目录文件mysql.test: (3)修改mysql.test两个目录及目录下所有文件的权限:chown mysql:mysql -R mysql test,注意这里一定要加上-R参数,否则启动会报错: (4)进入./mysql/bin启动:./mysqld_safe --u…

摘要:今天给大家带来一篇MySQL数据库崩溃的修复案例 本文分享自华为云社区<记一次MySQL崩溃修复案例,再也不用删库跑路了>,作者: 冰 河. 问题描述 研究MySQL源代码,调试并压测MySQL源代码时,MySQL崩溃了!问题是它竟然崩溃了!而且还损坏了InnoDB文件!!还好是在调试环境下发生的,赶紧看看如何解决这个问题,经过一系列的查阅资料.验证.对比.MySQL源码调试跟踪.修复损坏的InnoDB文件.总结等流程,整理成此文,如果以后真的发生在线上的生产坏境,也不用担心是不是要跑路…

binlog作为mysql中最重要的日志之一,能实现异常恢复以及主从复制. 我们主要讨论的是主从复制中的binlog,这里将以mysql5.7.13的源码为主要依据来分析binlog. 在主从复制中,binlog一般使用row模式,在主服务器上是binlog,在副服务器上是relaylog,在sql\binlog.h中is_relay_log这个变量来区分该情况. 在整个mysql中只有一个MYSQL_BIN_LOG实例,那就是在mysqld.h中定义的mysql_bin_log 1.binlo…

Total Commander 8.52 Beta 1http://www.ghisler.com/852_b1.php 10.08.15 Release Total Commander 8.52 beta 1 (32/64) 05.08.15 Fixed: Windows 10: Loading drive buttonbar hanging on some devices (e.g. Surface Pro 3) when SD-Card was in internal card reade…

http://blogs.msdn.com/b/debuggingtoolbox/archive/2011/10/03/top-things-to-consider-when-troubleshooting-complex-application-issues.aspx 1- For reactive incidents: “Bring the engineer onsite because it is going to be easier to isolate the problem.” Th…

作者:罗小波 [目录] 1. 先看mysqldump 1.1 mysqldump备份过程解读 1.2 mysqldump备份过程中的关键步骤 1.2.1 FLUSH TABLES和FLUSH TABLES WITH READ LOCK的区别 1.2.2 修改隔离级别的作用 1.2.3 使用WITH CONSISTENT SNAPSHOT子句的作用 1.2.4 使用savepoint来设置回滚点的作用 1.3 mysqldump有什么坑吗? 1.3.1. 坑一 1.3.2. 坑二 1.3.3. 有…

mysqldump与innobackupex备份过程你知多少 测试库表创建(这里在同一个库下创建两个表,一个表为innodb引擎,一个为myisam引擎) root@localhost : (none) 04:21:27> create database luoxiaobo; Query OK, 1 row affected (0.01 sec) root@localhost : (none) 04:21:45> use luoxiaobo Database changed root@loca…

Dump 文件分析很大程度上就是分析蓝屏产生的原因.这种系统级的错误算是Windows提示错误中比较严重的一种(更严重的还有启动黑屏等硬件或软件兼容性错误等等).说它是比较严重,是因为毕竟Windows还提供了dump文件给用户分析,至少能比较容易的找到错误的原因.一般蓝屏要么是内核程序中的异常或违规,要么是数据结构的损坏,也有boot或shutdown的时候内核出错.有时候蓝屏是一闪而过,紧接着是系统重启:有时候是蓝屏等待.总之蓝屏的时候都提示了一些停止代码和错误信息,不过这些提示是不全面的,…

Easy Install Easy Install is a python module (easy_install) bundled with setuptools that lets you automatically download, build, install, and manage Python packages. Please share your experiences with us! If you encounter difficulty installing a pack…

http://www.raywenderlich.com/23704/demystifying-ios-application-crash-logs This is a blog post by Soheil Moayedi Azarpour, an independent iOS developer. You can also find him on Google+. Have you ever had the following experience as an app developer?…

Believe it or not, developers are not perfect, and every once in a while you might have a (gasp!) bug in your app. You will try your best to ship your apps with no bugs in them, but more often than not you realise afterwards that a bug has slipped th…

[问题现象] 服务器在运行过程中,因人为意外导致电源被拔,服务器宕机,mysql重启不成功,报错如下 根据提示,输入systemctl status mysql.service和journalctl -xe查看日志,经过一番百度谷歌折腾也是无果.(很多时候,不能因为突发事件就“病急乱投医”) 最后在mysql 的日志处看到了报错日志 如果centos是通过yum安装的mysql,那么日志一般在/var/log/mysql.log 查看到日志 2018-11-29T08:39:18.977374Z…

Open mDNS Scanning Project 来自:https://mdns.shadowserver.org/ If you are looking at this page, then more than likely, you noticed a scan coming from this server across your network and/or poking at Multicast DNS (mDNS). The Shadowserver Foundation is…

近期,测试环境出现了一次MySQL数据库不断自动重启的问题,导致的原因是强行kill -9 杀掉数据库进程导致,报错信息如下: --24T01::.769512Z [Note] Executing 'SELECT * FROM INFORMATION_SCHEMA.TABLES;' to get a list of tables using the deprecated partition engine. You may use the startup option '--disable-par…