nodercms 安装请求失败，请尝试重启服务器与数据库并重新安装

安装请求失败，请尝试重启服务器与数据库并重新安装微信截图_20201031170559 不知道怎么回事，mongoDB已经连接成功了，但是安装不了

Oct 31 '20 09:10 13751139402

清空数据库
确保mongoDB开启了鉴权模式，同时 a超级用户已建立 b数据库用户已建立并拥有readWrite权限（详见官网帮助中心）
重新执行安装流程

2020年10月31日下午5:07，嘉爷 [email protected] 写道：

安装请求失败，请尝试重启服务器与数据库并重新安装 https://user-images.githubusercontent.com/48110405/97775417-65660e00-1b9b-11eb-836c-6d9241806c6d.png 不知道怎么回事，mongoDB已经连接成功了，但是安装不了

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Nov 05 '20 07:11 welkinwong

找到问题原因 core\services install.service 147 行 fs.writeFile('install.lock', "true", function (err) {

这里的true 字符串类型修改即可

Nov 26 '20 16:11 niaolianyu

上面的问题已经解决了，还是遇到同样的情况，报错如下：

[2020-12-23 13:06:51.882] [ERROR] console - (node:21379) DeprecationWarning: `open()` is deprecated in mongoose >= 4.11.0, use `openUri()` instead, or set the `useMongoClient` option if using `connect()` or `createConnection()`. See http://mongoosejs.com/docs/connections.html#use-mongo-client
[2020-12-23 13:06:51.890] [WARN] console - Db.prototype.authenticate method will no longer be available in the next major release 3.x as MongoDB 3.6 will only allow auth against users in the admin db and will no longer allow multiple credentials on a socket. Please authenticate using MongoClient.connect with auth credentials.

根据报错找到文档，，大概意思是说版本更新了，需要在连接的时候设置useMongoClient这个参数的值为true 所以在代码lib/database.lib.js中修改一下

     function (config, callback) {
       mongoose.connect('mongodb://' + config.host + ':' + config.port + '/' + config.db, {
         user: config.user,
         pass: config.pass
+        useMongoClient:true
       }, function (err) {
         if (err) {
           err.type = 'database';

添加这个参数后，问题解决