ruby，ActiveRecord::ConnectionNotEstablished

最新推荐文章于 2025-10-26 14:53:17 发布
原创 最新推荐文章于 2025-10-26 14:53:17 发布 · 2.6k 阅读 · 0 ·
CC 4.0 BY-SA版权
版权声明：本文为博主原创文章，遵循 CC 4.0 BY-SA 版权协议，转载请附上原文出处链接和本声明。
文章标签：

#ActiveRecordConnecti #ruby

本文介绍了解决在服务器上clone项目后遇到的ActiveRecord::ConnectionNotEstablished错误的方法。该错误通常由于数据库连接失败引起。文章指导如何通过复制配置文件、执行数据库迁移来解决问题。
部署运行你感兴趣的模型镜像

在服务器上clone下来项目后，本地测试出现“ActiveRecord::ConnectionNotEstablished”

这个错误是因为服务器想要跟数据库连接，发现找不到数据库，

此时，我们在bundle install 完后，还要执行数据迁移，

在这里要看项目选用的是那种数据库，目前项目用的是sqlite3，

所以就要把database.yml.sqlite3复制一份命名成database.yml，

然后执行“rake db:migrate”这样就会执行数据库迁移

rails 就会默认去读config/database.yml这个文件

您可能感兴趣的与本文相关的镜像

AutoGPT

AutoGPT

AI应用

AutoGPT于2023年3月30日由游戏公司Significant Gravitas Ltd.的创始人Toran Bruce Richards发布,AutoGPT是一个AI agent（智能体），也是开源的应用程序，结合了GPT-4和GPT-3.5技术，给定自然语言的目标，它将尝试通过将其分解成子任务，并在自动循环中使用互联网和其他工具来实现这一目标

18、Active Record 测试、调试与错误处理全解析
python9snake的博客
11-15 9
本文深入解析了Active Record中的测试、调试与错误处理机制。内容涵盖使用YAML、CSV和单文件格式的固定数据进行测试，事务支持的配置与注意事项，以及常见的Active Record错误类型及其解决方案。通过实例代码和对比表格，帮助开发者更好地理解如何有效使用测试数据、选择合适的数据格式，并预防和处理各类数据库相关异常，从而提升应用的稳定性和开发效率。
【rails】spork测试中出现ActiveRecord::ConnectionNotEstablished的解决方案
Chunyang Guo
10-03 3111
错误提示如下： 18:17:13 - INFO - Guard is now watching at '/home/guochy/sample_app' 18:17:20 - INFO - Running: spec/requests/static_pages_spec.rb Running tests with args ["--drb", "-f", "progress", "-r",
mysql activerecord_Rails和MySQL - 生产环境中的ActiveRecord::ConnectionNotEstablished
weixin_33162074的博客
02-17 484
我会尽量缩短：将Rails 3.2.1和mysql2用于数据库;在Ubuntu 11.10上运行在开发环境中，一切都很顺利当我在生产环境中启动我的服务器(WEBrick)时，它启动正常，但是在加载任何页面后，会引发以下错误：ActiveRecord::ConnectionNotEstablished (ActiveRecord::ConnectionNotEstablished):activere...
pgsql：connection failed connection to server at “1“, port 5432 failed “postgres“ P
最新发布
2509_92390300的博客
10-26 452
psql: 错误: 连接到"127.0.0.1"上的服务器，端口5432失败：致命错误: 用户 “postgres” Password 认证失败密码不对，需要重置密码。
ActiveRecord::ConnectionNotEstablished in Rails 3.1 on Heroku
emerald0106的专栏
05-04 803
ActiveRecord::ConnectionNotEstablished in Rails 3.1 on Heroku We have a simple application that doesn’t have an ActiveRecord dependency. It’s deployed to Heroku, and it’s been working fine on Rai
“Online:Connection could not be established.The connection partner is not responding“解决方案
ypn的博客
07-14 2865
Online:Connection could not be established.The connection partner is not responding 这个问题有三个途径可能出现问题： 1.PCPG方式是否正确，ISO为MAC 通讯方式 2.配置DP或CP时是否选择IP或MAC通讯 3硬件组态是否正确，选择的CPU CP PS 是否和实际的一致 ...
MySQL报错no connection established
TYJ1017的博客
05-07 3939
今天登数据库突然发现无法连接数据库了，很奇怪导致项目跑不起来，查阅得知是因为没有开启MySQL本地服务。
SL connection error: unknown error number Extracted source (around line #45): 43 44 45 46 47 48 raise ActiveRecord::NoDatabaseError else raise ActiveRecord::ConnectionNotEstablished, error.message end end end Rails.root: E:/rubyProject/student_curd
09-09
接下来，用户提供的错误信息中提到`ActiveRecord::ConnectionNotEstablished`，这通常意味着数据库连接配置有问题。我需要检查`database.yml`中的配置是否正确，特别是用户名、密码、主机和数据库名称是否正确。例如...
Ruby报错rake aborted! PG::ConnectionBad: could not connect to server: No such file or directory
lxq_9532的博客
07-17 1748
执行bundle exec rake evm:start报错 [root@localhost manageiq]# bundle exec rake evm:start ** Using session_store: ActionDispatch::Session::MemCacheStore ** ManageIQ master, codename: Ivanchuk Starting EVM....
rake aborted! ActiveRecord::ConnectionNotEstablished: SSL connection error: unknown error number E:/rubyProject/student_curd/vendor/bundle/ruby/2.6.0/gems/activerecord-6.1.7/lib/active_record/connection_adapters/mysql2_adapter.rb:45:in `rescue in new_client' E:/rubyProject/student_curd/vendor/bundle/ruby/2.6.0/gems/activerecord-6.1.7/lib/active_record/connection_adapters/mysql2_adapter.rb:39:in `new_client' E:/rubyProject/student_curd/vendor/bundle/ruby/2.6.0/gems/activerecord-6.1.7/lib/active_record/connection_adapters/mysql2_adapter.rb:23:in `mysql2_connection' E:/rubyProject/student_curd/vendor/bundle/ruby/2.6.0/gems/activerecord-6.1.7/lib/active_record/connection_adapters/abstract/connection_pool.rb:882:in `public_send' E:/rubyProject/student_curd/vendor/bundle/ruby/2.6.0/gems/activerecord-6.1.7/lib/active_record/connection_adapters/abstract/connection_pool.rb:882:in `new_connection' E:/rubyProject/student_curd/vendor/bundle/ruby/2.6.0/gems/activerecord-6.1.7/lib/active_record/connection_adapters/abstract/connection_pool.rb:926:in `checkout_new_connection' E:/rubyProject/student_curd/vendor/bundle/ruby/2.6.0/gems/activerecord-6.1.7/lib/active_record/connection_adapters/abstract/connection_pool.rb:905:in `try_to_checkout_new_connection' E:/rubyProject/student_curd/vendor/bundle/ruby/2.6.0/gems/activerecord-6.1.7/lib/active_record/connection_adapters/abstract/connection_pool.rb:866:in `acquire_connection' E:/rubyProject/student_curd/vendor/bundle/ruby/2.6.0/gems/activerecord-6.1.7/lib/active_record/connection_adapters/abstract/connection_pool.rb:588:in `checkout' E:/rubyProject/student_curd/vendor/bundle/ruby/2.6.0/gems/activerecord-6.1.7/lib/active_record/connection_adapters/abstract/connection_pool.rb:428:in `connection' E:/rubyProject/student_curd/vendor/bundle/ruby/2.6.0/gems/activerecord-6.1.7/lib/active_record/connection_adapters/abstract/connection_pool.rb:1128:in `retrieve_connection' E:/rubyProject/student_curd/vendor/bundle/ruby/2.6.0/gems/activerecord-6.1.7/lib/active_record/connection_handling.rb:327:in `retrieve_connection' E:/rubyProject/student_curd/vendor/bundle/ruby/2.6.0/gems/activerecord-6.1.7/lib/active_record/connection_handling.rb:283:in `connection' E:/rubyProject/student_curd/vendor/bundle/ruby/2.6.0/gems/activerecord-6.1.7/lib/active_record/tasks/database_tasks.rb:237:in `migrate' E:/rubyProject/student_curd/vendor/bundle/ruby/2.6.0/gems/activerecord-6.1.7/lib/active_record/railties/databases.rake:92:in `block (3 levels) in <main>' E:/rubyProject/student_curd/vendor/bundle/ruby/2.6.0/gems/activerecord-6.1.7/lib/active_record/railties/databases.rake:90:in `each' E:/rubyProject/student_curd/vendor/bundle/ruby/2.6.0/gems/activerecord-6.1.7/lib/active_record/railties/databases.rake:90:in `block (2 levels) in <main>' E:/rubyProject/student_curd/vendor/bundle/ruby/2.6.0/gems/rake-13.0.6/exe/rake:27:in `<top (required)>' Caused by: Mysql2::Error::ConnectionError: SSL connection error: unknown error number E:/rubyProject/student_curd/vendor/bundle/ruby/2.6.0/gems/mysql2-0.5.3-x64-mingw32/lib/mysql2/client.rb:90:in `connect' E:/rubyProject/student_curd/vendor/bundle/ruby/2.6.0/gems/mysql2-0.5.3-x64-mingw32/lib/mysql2/client.rb:90:in `initialize' E:/rubyProject/student_curd/vendor/bundle/ruby/2.6.0/gems/activerecord-6.1.7/lib/active_record/connection_adapters/mysql2_adapter.rb:40:in `new' E:/rubyProject/student_curd/vendor/bundle/ruby/2.6.0/gems/activerecord-6.1.7/lib/active_record/connection_adapters/mysql2_adapter.rb:40:in `new_client' E:/rubyProject/student_curd/vendor/bundle/ruby/2.6.0/gems/activerecord-6.1.7/lib/active_record/connection_adapters/mysql2_adapter.rb:23:in `mysql2_connection' E:/rubyProject/student_curd/vendor/bundle/ruby/2.6.0/gems/activerecord-6.1.7/lib/active_record/connection_adapters/abstract/connection_pool.rb:882:in `public_send' E:/rubyProject/student_curd/vendor/bundle/ruby/2.6.0/gems/activerecord-6.1.7/lib/active_record/connection_adapters/abstract/connection_pool.rb:882:in `new_connection' E:/rubyProject/student_curd/vendor/bundle/ruby/2.6.0/gems/activerecord-6.1.7/lib/active_record/connection_adapters/abstract/connection_pool.rb:926:in `checkout_new_connection' E:/rubyProject/student_curd/vendor/bundle/ruby/2.6.0/gems/activerecord-6.1.7/lib/active_record/connection_adapters/abstract/connection_pool.rb:905:in `try_to_checkout_new_connection' E:/rubyProject/student_curd/vendor/bundle/ruby/2.6.0/gems/activerecord-6.1.7/lib/active_record/connection_adapters/abstract/connection_pool.rb:866:in `acquire_connection' E:/rubyProject/student_curd/vendor/bundle/ruby/2.6.0/gems/activerecord-6.1.7/lib/active_record/connection_adapters/abstract/connection_pool.rb:588:in `checkout' E:/rubyProject/student_curd/vendor/bundle/ruby/2.6.0/gems/activerecord-6.1.7/lib/active_record/connection_adapters/abstract/connection_pool.rb:428:in `connection' E:/rubyProject/student_curd/vendor/bundle/ruby/2.6.0/gems/activerecord-6.1.7/lib/active_record/connection_adapters/abstract/connection_pool.rb:1128:in `retrieve_connection' E:/rubyProject/student_curd/vendor/bundle/ruby/2.6.0/gems/activerecord-6.1.7/lib/active_record/connection_handling.rb:327:in `retrieve_connection' E:/rubyProject/student_curd/vendor/bundle/ruby/2.6.0/gems/activerecord-6.1.7/lib/active_record/connection_handling.rb:283:in `connection' E:/rubyProject/student_curd/vendor/bundle/ruby/2.6.0/gems/activerecord-6.1.7/lib/active_record/tasks/database_tasks.rb:237:in `migrate' E:/rubyProject/student_curd/vendor/bundle/ruby/2.6.0/gems/activerecord-6.1.7/lib/active_record/railties/databases.rake:92:in `block (3 levels) in <main>' E:/rubyProject/student_curd/vendor/bundle/ruby/2.6.0/gems/activerecord-6.1.7/lib/active_record/railties/databases.rake:90:in `each' E:/rubyProject/student_curd/vendor/bundle/ruby/2.6.0/gems/activerecord-6.1.7/lib/active_record/railties/databases.rake:90:in `block (2 levels) in <main>' E:/rubyProject/student_curd/vendor/bundle/ruby/2.6.0/gems/rake-13.0.6/exe/rake:27:in `<top (required)>' Tasks: TOP => db:migrate (See full trace by running task with --trace)
09-09
根据用户的环境，他们使用的是Windows系统，可能安装了Bitnami的Ruby环境，并且可能使用了MySQL 8.x版本。常见的原因可能包括： 1. **MySQL配置中的SSL设置**：MySQL服务器可能要求SSL连接，而客户端没有正确配置。...
数据库突然不能运行了，出现 no connection established这么办！
L520134_051029的博客
04-02 3326
一般出现这种情况都是因为数据库服务突然停止了，只需要在cmd命令提示框中输入services.msc后回车，打开后台应用列表找到mysql80点右键启动即可。
mysql workbench no connection established解决和服务启动后停止
热门推荐
sandalphon4869的博客
06-07 2万+
文章目录一、启动服务1.出现的问题2.启动服务二、服务启动后停止1.Data复制、删除2.初始化数据库文件 一、启动服务 1.出现的问题 数据库中没有表，报错no connection established 2.启动服务 win+R输入命令 services.msc 找到你的MYSQL_XXX，比如我的MYSQL80 如果成功了，就没事了。 如果失败了，就继续下面的。 二、服务启动后停止 1.Data复制、删除 去Configuration File（mysql配置文件的位置）所在的文件夹
informix 数据库 Transactions not supported 异常
whaleJJ的专栏
08-26 3169
这种情况是informix数据库没有开启事务日志造成的。 经常出现在新安装一个informix数据库，然后就直接使用的情况下。 出错后，请按下列步骤进行处理(以库名为’bmdp01’为例)： onstat -g sql 如果有bmdp01的相关连接, 使用onmode -z session_id指令将其杀掉; 比如： 执行添加日志操作: onta
GitLab 报错 ConnectionBad: could not connect to server: No such...
ArvinWoo
01-18 1万+
昨天安装GitLab之后，汉化 执行 gitlab-ctl reconfigure 报错 PG::ConnectionBad: could not connect to server: No such file or directory Is the server running locally and accepting connections on Unix domain socket “/...
The SSL connection could not be established, see inner exception. The remote certificate is invalid
dqcoffee的博客
02-01 7699
后台程序使用netcore 3.1开发的程序，访问时，报“The SSL connection could not be established, see inner exception. The remote certificate is invalid according to the validation procedure”这个错误，经百度查，为证书问题。在centos7环境下，访问https的网页正常，使用curl访问网页也正常。
informix-connect连接设置
xieye的专栏
02-24 2325
主机：SCO OpenServer 5.0.5  Informix 5.0客户端：WinXP  Informix-Connect 2.70服务器端设置：hosts文件中加入客户端IP及机器名services文件中添加服务名及端口/协议客户端设置：hosts文件加入主机IP及机器名services文件添加服务及端口/协议(与服务器端相同)Setnet32设置：Se
【0033】 PostgreSQL报错： psql: could not connect to server: No such file or directory
Postgres 数据库内核开发工程师
04-02 9214
    psql命令终端登录PostgreSQL服务器时候报错，并提示一下错误信息： [root@mdw bin]# ./psql -p 5432 -U postgres; psql: could not connect to server: No such file or directory Is the server running locally and accepting connections on Unix domain socket "/var/run/post
CDH5.15.0 kafka调试报错Connection to node -1 could not be established. Broker may not be available.
weixin_43079984的博客
03-21 3182
在CDH5.15.0版本集群中加入kafka服务后，使用kafka自带的命令行生产者kafka-console-producer和命令行消费者kafka-console-consumer进行调试时，producer端启动，输入消息回车后报错WARN clients.NetworkClient: [Producer clientId=console-producer] Connection to n...
评论
成就一亿技术人!
拼手气红包6.0元
还能输入1000个字符
 
红包 添加红包
表情包 插入表情
表情包 代码片
 条评论被折叠 查看
添加红包

请填写红包祝福语或标题

个

红包个数最小为10个

元

红包金额最低5元

当前余额3.43元 前往充值 >
需支付：10.00元
成就一亿技术人!
领取后你会自动成为博主和红包主的粉丝 规则
hope_wisdom
发出的红包
实付元
使用余额支付
点击重新获取
扫码支付
钱包余额 0

抵扣说明：

1.余额是钱包充值的虚拟货币，按照1:1的比例进行支付金额的抵扣。
2.余额无法直接购买下载，可以购买VIP、付费专栏及课程。

余额充值