在远程连接mysql的时候，连接不上，出现如下报错： Lost connection to MySQL server at 'waiting for initial communication packet...原因分析： mysql开启了DNS的反向解析功能，这样mysql对连接的客户端会进行DNS主机名查找。...mysql的DNS反向解析： 1）mysql接收到连接请求后，获得的是客户端的ip，为了更好的匹配mysql.user里的权限记录（某些是用hostname定义的）。...2）在my.cnf配置文件中的[mysqld]区域添加skip-name-resolve，即跳过mysql连接的DNS反向解析功能，这样能很好地提高mysql性能。...在这种情况下，就只能使用MySQL授权表中的IP来连接mysql服务了。 对于第一种方法显然比较笨，也不实用！
今天在开发过程中，一个单位跑的好好的项目，在家中的Mac下运行时，遇到了下面这个错误： "Lost connection to MySQL server at 'reading initial communication...packet, system error: 61" 看错误描述应该是无法连接数据库，OK，我先检查数据库是否正常工作，phpmyadmin看了一下一切正常。...根据 Stack Overflow 中的讨论，推论出因为默认安装的mysql绑定的地址是 localhost 所以使用IP访问时mysql的访问策略拒绝了访问，解决方法是修改 my.cnf 或者允许IP
MySQL:reading initial communication packet问题解决方法 Lost connection to MySQL server at ‘reading initial...communication packet’ 错误解决 上次解决了这个问题，今天又碰到，突然失忆，又做了一番无用功后终于搞定，这次一定要记录下来，免得下次又浪费时间 1、修改mysql配置文件 vi /etc.../etc/hosts.allow 加mysqld : ALL : ALLOW mysqld-max : ALL :ALLOW 其它网友的补充： mysql教程 ‘reading initial communication...packet’错误解决方法 出现这种问题是服务器突然关掉出现的问题， 错误提示是: 无法链接数据库教程(mysql)服务器, 请检查服务器地址、用户名、密码....代码: 2013 错误: lost connection to mysql server at ‘reading initial communication pa(www.jb51.net)cket’,
Mysql错误Lost connection to MySQL server at ‘reading initial communication packet’, system error: 0解决方法...,需要的朋友可以参考下 远程连接mysql是总是提示： Lost connection to MySQL server at ‘reading initial communication packet'...其实问题很简单，都是MySQL的配置文件默认没有为远程连接配置好，只需要更改下MySQL的配置文件即可。 具体的解决步骤如下，希望能帮助遇到同样问题的同学们： 找到并修改my.cnf文件。...这里以Ubuntu Server做示例，其他系统请根据情况自行找到my.cnf的路径。一般只会存放在/etc/my.cnf或者/etc/mysql/my.cnf下。...然后找到[mysqld]部分的参数，在配置后面建立一个新行，添加下面这个参数：skip-name-resolve 保存文件并重启MySQL： /etc/init.d/mysql restart 这样就会发现
在执行select语句运行了100多秒然后现了lost connection to MySQL server during query错误信息 排查原因： 1、查看explain执行计划发现了需要扫描将近...100多秒， 未触发阈值 参数：interactive\wait timeout 链接空闲超时1800秒，未触发阈值 3、查看了服务器的性能，发现cpu满载负荷，判定慢sql导致的cpu负载非常高，导致了mysql...4、出现这个报错原因比较多，例如：sql语句比较大，max_allowed_packet 数值设置比较小也会导致这个问题
MySQL Error 2013: Lost connection to MySQL server during query 错误代码: 1153 - Got a packet bigger than...'max_allowed_packet' bytes 解决方法： 修改mysql.ini（网上都说是这个文件，找了N久终于知道在哪里了，我的目录是在 D:\MySQL_Data\MySQL Server...5.5 在MySQL_Data文件夹下）文件添加如下代码即可 max_allowed_packet=500M 如果不可以的话就修改D:\MySQL\MySQL Server 5.5\my-huge.ini...里的max_allowed_packet=16M 把16改为500 我是根据此方法做的，试试 4....可以直接在mysql中设置： #show variables like '%timeout%'; #show variables like 'max_allowed_packet' set global
2 mysql常见超时相关参数 Aborted connection xxx to db: ‘xxx’ user: ‘xxx’ host: ‘xxx’ (Got timeout reading communication...host: 'localhost' (Got timeout reading communication packets) 很可能需要调整的 wait_timeout/interactive_timeout...' (Got an error reading communication packets) 2017-05-15 20:07:39 5063 [Warning] Aborted connection...The number of bytes in the packet beyond the initial 4 bytes that make up the packet header.intsequence_id...MySQL Protocol Packet Length: 5 Packet Number: 5 EOF marker: 254 Warnings: 0 Server
'xxxxx' (Got an error reading communication packets) 200701 17:57:50 [Warning] Aborted connection 50367424...(Got an error reading communication packets) 200701 17:57:50 [Warning] Aborted connection 50367424 to...(Got an error reading communication packets) 200701 17:57:50 [Warning] Aborted connection 50367424 to...首先来看通信包在MySQL中的定义： A communication packet is a single SQL statement sent to the MySQL server, a single...3、数据传输过程中，客户端发生了断开的情况 4、max_allowed_packet值设置太小，或者查询需要更多的内存空间 MySQL Client和Server交互原理： 有了上面的这些建议
host: 'hostname' (Got an error reading communication packets) [Warning] Aborted connection xx to db:'...unconnected' user: 'root' host: '127.0.0.1' (Got timeout reading communication packets) [Warning] Aborted...connection 109 to db:'xxx' user: 'yy' host: '10.10.20.10' (Got an error writing communication packets...如果系统中出现大量 Got timeout reading communication packets 的时候 就需要我们人为介入了，排查到底是不是网络异常导致的该错误。.../05/16/mysql-got-an-error-reading-communication-packet-errors/ -The End-
Your MySQL connection id is 18 Server version: 8.0.23 MySQL Community Server - GPL Copyright (c) 2000...Your MySQL connection id is 9 Server version: 8.0.23 MySQL Community Server - GPL Copyright (c) 2000...Your MySQL connection id is 22 Server version: 8.0.23 MySQL Community Server - GPL Copyright (c) 2000...B.3.2.1 Access denied B.3.2.2 Can't connect to [local] MySQL server B.3.2.3 Lost connection to MySQL...memory B.3.2.7 MySQL server has gone away B.3.2.8 Packet Too Large B.3.2.9 Communication Errors and
来看看如下报错 [mysqldump: Error: 'Lost connection to MySQL server during query' when trying to dump tablespaces...mysqldump: couldn't execute 'SHOW VARIABLES LIKE 'ndbinfo'\_version' MySQL server has gone away (2006...] Aborted connection 149718 to db: 'unconnected' user: 'root' host: 'localhost' (Got an error reading...但是奇怪的是我们在日志并没有找到Got timeout reading communication packets的日志。 4.3 重点是该SQL为什么运行时间这么久呢？...an error reading communication packets。
=123456 \ > -p 33061:3306 --network=dble-net \ > -d mysql:8.0.29 --server-id=1 54505aeca71ae7c4553a0fa98e705ee302cdfc08c2b472768afc6170dddf6d37...=123456 \ > -p 33062:3306 --network=dble-net \ > -d mysql:8.0.29 --server-id=2 5f907b977fc242be35dc01840a5393f2ee754572dd1d59e2fb072032df1ed8d0...available after 6 seconds init shardingNode and execute template_table.sql ERROR 2013 (HY000): Lost...connection to MySQL server at 'reading initial communication packet', system error: 104 ERROR 2003...(HY000): Can't connect to MySQL server on '127.0.0.1' (111) dble init finish 用docker cp 在宿主环境修改 db.xml
Therefore, we're sending the information to the error-log instead: MY-001158 - Got an error reading communication...一直断开与主库的连接，并不断重连，从库 error log 报错如下： 2020-04-29T10:34:42.361584+08:00 1998 [ERROR] [MY-010557] [Repl] Error reading...packet from server for channel '': Lost connection to MySQL server during query (server_errno=2013)...Please consider using the USER and PASSWORD connection options for START SLAVE; see the 'START SLAVE...Therefore, we're sending the information to the error-log instead: MY-001158 - Got an error reading communication
前言： 有时候，连接MySQL的会话经常会异常退出，错误日志里会看到"Got an error reading communication packets"类型的告警。...2.Got an error reading communication packets原因分析 哪种情况会导致error log中出现“Aborted connection xxxx to db: '...db' user: 'dbuser' host: 'hostname' (Got an error reading communication packets)”类似告警呢？...会话异常退出一般会造成Aborted connection告警，即我们可以通过Aborted_clients状态变量的变化来反映出是否存在异常会话，那么出现“Got an error reading communication...参考： https://dev.mysql.com/doc/refman/5.7/en/communication-errors.html ---- — END —
reading communication packets) [Warning] Aborted connection 81 to db:'unconnected' user: 'root' host...: '127.0.0.1' (Got timeout reading communication packets) [Warning] Aborted connection 109 to db:'helei1...processlist; ERROR 2006 (HY000): MySQL server has gone away No connection....reading communication packets) [Warning] Aborted connection 78 to db: 'unconnected' user: 'root' host...: '127.0.0.1' (Got timeout reading communication packets) [Warning] Aborted connection 79 to db: 'unconnected
ER_OUT_OF_RESOURCES; /* In the server, allocation failure raises a error. */ net->reading_or_writing...(void *)packet); net->reading_or_writing = 0; } 16. net_write_raw_loop函数 // Write a determined number...A communication packet is a single SQL statement sent to the MySQL server, a single row that is sent ... an ER_NET_PACKET_TOO_LARGE error and closes the connection....With some clients, you may also get a Lost connection to MySQL server during query error if the communication
-1-exec-10] WARN com.zaxxer.hikari.pool.ProxyConnection - HikariPool-1 - Connection com.mysql.cj.jdbc.ConnectionImpl...The last packet sent successfully to the server was 3,056 milliseconds ago....The last packet sent successfully to the server was 3,056 milliseconds ago....Expected to read 4 bytes, read 0 bytes before connection was unexpectedly lost....Expected to read 4 bytes, read 0 bytes before connection was unexpectedly lost.
TCP is the protocol that guarantees we can have a reliable communication channel over an unreliable network...When we send data from a node to another, packets can be lost, they can arrive out of order, the network...On the other side of this communication, the network layer will deliver this piece of data to TCP, that...As soon as packet 3 is acked, we can slide the window to the right and send the packet 8....Now, if for some reason the application reading these packets in node B slows down, TCP will still ack
应用程序端碰到错误提示，MySQLNonTransientConnectionException:Got an error writing communication packets。...:MySQLNonTransientConnectionException:Got an error writing communication packets 数据库服务器端异常： mysql> flush...server and clients, including replication slaves....Links and Further Reading MySQL Manual: Replication and max-allowed-packet MySQL Manual: System Variable...Index - M MySQL Manual: Server System Variables set global max_allowed_packet=16777216 --上面的描述是主从之间的参数
The last packet sent successfully to the server was 0 milliseconds ago....The last packet sent successfully to the server was 0 milliseconds ago....The last packet sent successfully to the server was 0 milliseconds ago.; nested exception is com.mysql.jdbc.exceptions.jdbc4...The last packet sent successfully to the server was 1 milliseconds ago.; nested exception is com.mysql.jdbc.exceptions.jdbc4...Expected to read 4 bytes, read 0 bytes before connection was unexpectedly lost.
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