mysql - 从撰写到集群 : Lost connection to MySQL server at 'reading authorization packet'

标签 mysql docker docker-compose telnet docker-swarm

我有一个 docker-compose 文件，允许我启动和访问 Web 应用程序，这使用 compose 命令:在原始 docker-compose -f docker-compose-dev.yml up -d 文件上使用 docker-compose-dev.yml:

version: "3"
services:
  learnintouch-startup:
    image: localhost:5000/learnintouch-startup
    container_name: learnintouch-startup
    restart: always
    volumes:
      - "~/dev/docker/projects/learnintouch/volumes/engine:/usr/bin/learnintouch/engine"
      - "~/dev/docker/projects/learnintouch/volumes/www.learnintouch/account/data:/usr/bin/learnintouch/www/learnintouch.com/account/data"
      - "~/dev/docker/projects/learnintouch/volumes/www.thalasoft/account/data:/usr/bin/learnintouch/www/thalasoft.com/account/data"
      - "~/dev/docker/projects/learnintouch/volumes/www.folkuniversitet/account/data:/usr/bin/learnintouch/www/folkuniversitet/account/data"
    ports:
      - "81:80"
    links:
      - mysql
      - redis
      - nodejs-learnintouch
  nodejs-learnintouch:
    image: localhost:5000/nodejs-learnintouch
    container_name: nodejs-learnintouch
    restart: always
    volumes:
      - "~/dev/docker/projects/learnintouch/volumes/engine:/usr/bin/learnintouch/engine"
    ports:
      - "9001:9001"
    links:
      - redis
  mysql:
    image: localhost:5000/mysql:5.6.30
    container_name: mysql
    restart: always
    environment:
      - MYSQL_ROOT_PASSWORD=root
    volumes:
      - "~/dev/docker/projects/learnintouch/volumes/mysql/data:/usr/bin/mysql/install/data"
  redis:
    image: localhost:5000/redis:3.0.7
    container_name: redis
    restart: always

现在，我想以集群模式运行它。我知道集群模式是可用的，因为我正在为引擎和客户端运行 docker 版本 17.05.0-ce。主机是 Ubuntu 16.04 。

我可以使用 docker swarm init 命令初始化集群。

然后我尝试启动网络应用程序:

$ docker stack deploy --compose-file docker-compose-swarm-dev.yml learnintouch
Creating network learnintouch_default
Creating service learnintouch_mysql
Creating service learnintouch_redis
Creating service learnintouch_learnintouch-startup
Creating service learnintouch_nodejs-learnintouch

learnintouch-startup容器有一个MySQL客户端正在尝试访问mysql容器中的MySQL服务器。

但是不存在这样的容器名称，因此不再存在这样的主机名。

以前，在非 Swarm 模式下，容器名称被用作主机名，但现在，没有这样的容器名称。

我尝试在 docker stack deploy --compose-file docker-compose-swarm-dev.yml learnintouch 文件上使用以下 docker-compose-swarm-dev.yml 命令:

version: "3"
services:
  learnintouch-startup:
    image: localhost:5000/learnintouch-startup
    volumes:
      - "~/dev/docker/projects/learnintouch/volumes/engine:/usr/bin/learnintouch/engine"
      - "~/dev/docker/projects/learnintouch/volumes/www.learnintouch/account/data:/usr/bin/learnintouch/www/learnintouch.com/account/data"
      - "~/dev/docker/projects/learnintouch/volumes/www.thalasoft/account/data:/usr/bin/learnintouch/www/thalasoft.com/account/data"
      - "~/dev/docker/projects/learnintouch/volumes/www.folkuniversitet/account/data:/usr/bin/learnintouch/www/folkuniversitet/account/data"
    ports:
      - "81:80"
  nodejs-learnintouch:
    image: localhost:5000/nodejs-learnintouch
    volumes:
      - "~/dev/docker/projects/learnintouch/volumes/engine:/usr/bin/learnintouch/engine"
    ports:
      - "9001:9001"
  mysql:
    image: localhost:5000/mysql:5.6.30
    environment:
      - MYSQL_ROOT_PASSWORD=root
    volumes:
      - "~/dev/docker/projects/learnintouch/volumes/mysql/data:/usr/bin/mysql/install/data"
    hostname: mysql
  redis:
    image: localhost:5000/redis:3.0.7

如何指定 swarm 服务的主机名？

请注意，如果我使用 docker-compose -f docker-compose-dev.yml up -d 命令在非集群模式下启动应用程序，则应用程序响应良好。只有当我使用 docker stack deploy --compose-file docker-compose-swarm-dev.yml learnintouch 命令以群体模式启动它时，才不再找到 mysql 主机名: The data source for the database db_learnintouch could not be initialized for the user learnintouch on the host mysql:3306 。事实上，在后一种情况下，容器名称是 learnintouch_mysql.1.pu846rr8to5gwxwnxpdm4hdth 而不是 mysql 。

更新:看来问题不是主机名问题，而是 swarm/mysql 问题。 在 mysql 容器中我可以正常登录 MySQL:

$ docker exec -it learnintouch_mysql.1.m51o8deg8cslb8mzayp119m67 bash
root@mysql:/usr/bin/mysql-5.6.30# cd /usr/bin/mysql/install;
root@mysql:/usr/bin/mysql/install# bin/mysql --protocol=tcp -h mysql -P 3306 -u root -p
Enter password: 
Welcome to the MySQL monitor.  Commands end with ; or \g.

但是在 learnintouch-startup 客户端容器中，我只能 ping 通 mysql 服务，但无法登录它:

$ docker exec -it learnintouch_learnintouch-startup.1.kf13qktlvxs9rgjzaea2xxd68 bash
root@aa0f0539ba52:/usr/bin/learnintouch/www/folkuniversitet# cd /usr/bin/mysql/install 
root@aa0f0539ba52:/usr/bin/mysql/install# bin/mysql --protocol=tcp -h mysql -P 3306 -u root -p
Enter password: 
ERROR 2013 (HY000): Lost connection to MySQL server at 'reading authorization packet', system error: 0
root@aa0f0539ba52:/usr/bin/mysql/install# ping mysql
PING mysql (10.0.0.8) 56(84) bytes of data.
64 bytes from 10.0.0.8: icmp_seq=1 ttl=64 time=0.061 ms
64 bytes from 10.0.0.8: icmp_seq=2 ttl=64 time=0.084 ms
64 bytes from 10.0.0.8: icmp_seq=3 ttl=64 time=0.075 ms
^C
--- mysql ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 1998ms

事实上我也可以远程登录:

root@861cc3861e67:/usr/bin/learnintouch/www/folkuniversitet# telnet mysql 3306
Trying 10.0.0.6...
Connected to mysql.
Escape character is '^]'.
N
5.6.30-logs5L\i|Sj��=0t}62:k,8s]mysql_native_password

!#08S01Got packets out of orderConnection closed by foreign host.

我正在使用自定义构建的 MySQL 版本 mysql:5.6.30 和 my.cnf 文件:

[mysqld]
bind-address    = 0.0.0.0 # Allow client binding from any IP address instead of just 127.0.0.1
port            = 3306
sql_mode        = NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION # This is strict mode: NO_ENGINE_SUBSTITUTION,STRICT_TRANS_TABLES
socket          = /usr/bin/mysql/install/tmp/mysql.sock
user            = root
basedir         = /usr/bin/mysql/install
datadir         = /usr/bin/mysql/install/data
log-bin         = /usr/bin/mysql/install/mysql.bin.log
log-error       = /usr/bin/mysql/install/mysql.error.log
general-log-file     = /usr/bin/mysql/install/mysql.log
slow-query-log-file  = /usr/bin/mysql/install/mysql.slow.queries.log
innodb_file_per_table = 1
innodb_flush_log_at_trx_commit = 1
sync_binlog = 1
innodb_flush_method = O_DIRECT
character-set-server = utf8mb4
collation-server = utf8mb4_unicode_ci
init-connect = 'SET NAMES utf8mb4'
character-set-client-handshake = FALSE
connect_timeout = 60
wait_timeout = 28800 # amount of seconds during inactivity that MySQL will wait before it will close a connection on a non-interactive connection
interactive_timeout = 28800 # same, but for interactive sessions
[client]
socket = /usr/bin/mysql/install/tmp/mysql.sock
default-character-set = utf8mb4
[mysql]
default-character-set = utf8mb4
protocol = tcp # Forces the client to use the TCP protocol, except for PHP which ignores it

/etc/hosts.allow 容器中没有 /etc/hosts.deny 和 mysql 文件。

周围没有防火墙。

引擎和客户端上的 Docker 版本均为 17.05.0-ce，docker-compose 版本为 1.16.1。

更新:删除群并再次启动后，我可以在浏览器中运行该应用程序，并看到它运行得很好。因此，在此之后，我又进行了一次删除，然后启动，并且再次发生了相同的错误。因此，有时(但很少)不会发生错误。

更新:看来，从客户端容器内运行 telnet mysql 3306 命令可以解决该问题并允许 MySQL 客户端连接继续进行。这是一致的:我删除了 swarm 并重新启动它，我在客户端容器中打开了 bash，我尝试登录 MySQL 服务器容器，但它失败了，我重试了很多次，但它仍然失败，我运行 ping mysql命令，然后再次尝试连接多次，但失败，然后我运行 telnet mysql 3306 命令，然后尝试连接，结果成功。

root@2651380ce02e:/usr/bin/mysql/install# cd /usr/bin/mysql/install; bin/mysql --protocol=tcp -h mysql -P 3306 -u root -p
Enter password: 
ERROR 2013 (HY000): Lost connection to MySQL server at 'reading authorization packet', system error: 0
root@2651380ce02e:/usr/bin/mysql/install# 
root@2651380ce02e:/usr/bin/mysql/install# ping mysql
PING mysql (10.0.0.4) 56(84) bytes of data.
64 bytes from 10.0.0.4: icmp_seq=1 ttl=64 time=0.088 ms
64 bytes from 10.0.0.4: icmp_seq=2 ttl=64 time=0.109 ms
64 bytes from 10.0.0.4: icmp_seq=3 ttl=64 time=0.091 ms
^C
--- mysql ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 1999ms
rtt min/avg/max/mdev = 0.088/0.096/0.109/0.009 ms
root@2651380ce02e:/usr/bin/mysql/install# telnet mysql 3306
Trying 10.0.0.4...
Connected to mysql.
Escape character is '^]'.
N
5.6.30-logf[tT)mlX��Pi@EwHCT\SkBmysql_native_password
Connection closed by foreign host.
root@2651380ce02e:/usr/bin/mysql/install# cd /usr/bin/mysql/install; bin/mysql --protocol=tcp -h mysql -P 3306 -u root -p
Enter password: 
Welcome to the MySQL monitor.  Commands end with ; or \g.

这是一个完整的演示运行作为证据:

$ docker exec -it learnintouch_learnintouch-startup.1.ili3m1kre9q2eaiyzlucr2uot bash
root@ce21d5b78886:/usr/bin/learnintouch/www/folkuniversitet# cd /usr/bin/mysql/install; bin/mysql --protocol=tcp -h mysql -P 3306 -u root -pEnter password: 
ERROR 2013 (HY000): Lost connection to MySQL server at 'reading authorization packet', system error: 0
root@ce21d5b78886:/usr/bin/mysql/install# 
root@ce21d5b78886:/usr/bin/mysql/install# 
root@ce21d5b78886:/usr/bin/mysql/install# ping mysql
PING mysql (10.0.0.4) 56(84) bytes of data.
64 bytes from 10.0.0.4: icmp_seq=1 ttl=64 time=0.040 ms
64 bytes from 10.0.0.4: icmp_seq=2 ttl=64 time=0.110 ms
64 bytes from 10.0.0.4: icmp_seq=3 ttl=64 time=0.093 ms
64 bytes from 10.0.0.4: icmp_seq=4 ttl=64 time=0.091 ms
^C
--- mysql ping statistics ---
4 packets transmitted, 4 received, 0% packet loss, time 2999ms
rtt min/avg/max/mdev = 0.040/0.083/0.110/0.027 ms
root@ce21d5b78886:/usr/bin/mysql/install# bin/mysql --protocol=tcp -h mysql -P 3306 -u root -p
Enter password: 
ERROR 2013 (HY000): Lost connection to MySQL server at 'reading authorization packet', system error: 0
root@ce21d5b78886:/usr/bin/mysql/install# bin/mysql --protocol=tcp -h mysql -P 3306 -u root -p
Enter password: 
ERROR 2013 (HY000): Lost connection to MySQL server at 'reading authorization packet', system error: 0
root@ce21d5b78886:/usr/bin/mysql/install# ping mysql
PING mysql (10.0.0.4) 56(84) bytes of data.
64 bytes from 10.0.0.4: icmp_seq=1 ttl=64 time=0.091 ms
64 bytes from 10.0.0.4: icmp_seq=2 ttl=64 time=0.105 ms
64 bytes from 10.0.0.4: icmp_seq=3 ttl=64 time=0.082 ms
^C
--- mysql ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2000ms
rtt min/avg/max/mdev = 0.082/0.092/0.105/0.014 ms
root@ce21d5b78886:/usr/bin/mysql/install# bin/mysql --protocol=tcp -h mysql -P 3306 -u root -p
Enter password: 
ERROR 2013 (HY000): Lost connection to MySQL server at 'reading authorization packet', system error: 0
root@ce21d5b78886:/usr/bin/mysql/install# bin/mysql --protocol=tcp -h mysql -P 3306 -u root -p
Enter password: 
ERROR 2013 (HY000): Lost connection to MySQL server at 'reading authorization packet', system error: 0
root@ce21d5b78886:/usr/bin/mysql/install# telnet mysql 3306
Trying 10.0.0.4...
Connected to mysql.
Escape character is '^]'.
N
5.6.30-logZo?*R@)M��(~cWg"q5R}?amysql_native_password
^CConnection closed by foreign host.
root@ce21d5b78886:/usr/bin/mysql/install# bin/mysql --protocol=tcp -h mysql -P 3306 -u root -p
Enter password: 
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 2
Server version: 5.6.30-log Source distribution

Copyright (c) 2000, 2016, Oracle and/or its affiliates. All rights reserved.

Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.

Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.

mysql> quit;
Bye
root@ce21d5b78886:/usr/bin/mysql/install#

最佳答案

您可以使用您在 docker-compose 文件中指定的服务名称作为 swarm 中的主机名，例如您的 mysql 服务名称为 mysql 您可以使用该名称作为主机名，而且docker stack https://docs.docker.com/compose/compose-file/#not-supported-for-docker-stack-deploy 不支持链接等某些选项

如果你想在不同的网络中使用不同的主机名，那么你可以使用别名 https://docs.docker.com/compose/compose-file/#networks

关于mysql - 从撰写到集群 : Lost connection to MySQL server at 'reading authorization packet' ，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/47123779/

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