我最近接手了一个10年前创建的旧项目.它使用MySQL 5.1.
除此之外,我需要将默认字符集从latin1更改为utf8.
举个例子,我有这样的表:
CREATE TABLE `users` (
`id` int(10) unsigned NOT NULL AUTO_INCREMENT,
`first_name` varchar(45) CHARACTER SET latin1 COLLATE latin1_general_ci DEFAULT NULL,
`last_name` varchar(45) CHARACTER SET latin1 COLLATE latin1_general_ci DEFAULT NULL,
`username` varchar(127) CHARACTER SET latin1 COLLATE latin1_general_ci NOT NULL,
`email` varchar(127) CHARACTER SET latin1 COLLATE latin1_general_ci NOT NULL,
`pass` varchar(20) CHARACTER SET latin1 COLLATE latin1_general_ci NOT NULL,
`active` char(1) CHARACTER SET latin1 COLLATE latin1_general_ci NOT NULL DEFAULT 'Y',
`created` datetime NOT NULL,
`last_login` datetime DEFAULT NULL,
`author` varchar(1) …我正在接管一个旧的Rails应用程序.一年没人接触过它.最后一位开发者在2015年4月离职,我无法联系他.我确实有ssh访问服务器,我可以访问Github仓库.
我不知道任何用户名/密码.
如果我ssh到服务器并且我捕获了database.yml文件,我会看到类似的东西:
staging:
adapter: mysql2
encoding: utf8
pool: 5
socket: /var/lib/mysql/mysql.sock
database: o_wawa_stage
username: wawa_stage
password: <%= ENV['STAGE_DATABASE_PASSWORD'] %>
host: access.dmedia.com
如果我运行"printenv"命令,那么我没有看到任何这些变量.我假设它们只是由Rails环境加载.
我想我可以编辑模板,用一堆"put"语句吐出值,但我认为必须有一个更明显的方法来做到这一点,除了打印公众可以看到的数据？
如果我尝试运行"rails console",我会得到:
Rails Error: Unable to access log file. Please ensure that /var/www/haha/production/releases/20150118213616/log/development.log exists and is writable (ie, make it writable for user and group: chmod 0664 /var/www/haha/production/releases/20150118213616/log/development.log). The log level has been raised to WARN and the output directed to STDERR until the problem is fixed.
我在这个盒子上没有sudo,所以我无法解决这个错误.
Mongo 3.2版
我在AWS的一个实例上设置了MongoDB.
然后我将其添加到安全组,作为防火墙的例外.具体来说,我将其设置为客户TCP规则,端口27017除外.
如果我ssh到实例并执行:
netstat -pl
我可以在输出中看到:
tcp 0 0 localhost:27017 : LISTEN 2025/mongod
所以mongodb正在运行,它正在侦听端口27017,并且防火墙添加了27017的例外.
但在我的本地Mac上,当我尝试连接时,我收到一个错误:
mongo ec2-154-52-32-196.compute-1.amazonaws.com:27017/vvvvv -u ccccc -p xxxx
MongoDB shell version: 3.2.6
connecting to: ec2-54-152-232-96.compute-1.amazonaws.com:27017/vvvvv
2016-05-06T09:52:07.281-0400 W NETWORK [thread1] Failed to connect to 54.152.232.96:27017, reason: errno:61 Connection refused
2016-05-06T09:52:07.281-0400 E QUERY [thread1] Error: couldn't connect to server ec2-54-152-232-96.compute-1.amazonaws.com:27017, connection attempt failed :
connect@src/mongo/shell/mongo.js:231:14
@(connect):1:6
exception: connect failed
我还需要做什么才能连接？
[[更新]]
所以我:
emacs /etc/mongod.conf
我添加0.0.0.0:
net:
port: 27017
bindIp: 127.0.0.1,0.0.0.0
然后:
service mongod restart
mongod stop/waiting
mongod …