I have developed a c# windows application which uses SQL server 2012 database in Visual Studio 2015 which is running well on my pc.
I am to install this application on a number of computers without SQL server installed on it, but when I run the application, its gives me database connection error.
My question is, how can I create the setup file to be able to run the app on those clients pc without installing SQL server on all those computers. Please I need your help.
Thank you.
Am Emmanuel.
Use an Azure database and have the clients connect to that.
Have a look at https://azure.microsoft.com/en-us/services/sql-database/
Alter your application connection string and make sure you keep the connection string secret.
Server=tcp:myserver.database.windows.net,1433;Database=myDataBase;User ID=mylogin#myserver;Password=myPassword;Trusted_Connection=False;Encrypt=True;MultipleActiveResultSets=True;
An important fact is that the clients need to allow communication via port 1433.
If this is not an option create an API application and query the database via that.
If you need a private database per client you can use a database file and connect to the file
https://learn.microsoft.com/en-us/sql/database-engine/configure-windows/sql-server-express-localdb?view=sql-server-ver15
Update based on reply
You can create a pop-up on the application allowing the users to add valid settings and credentials when your appsettings.json is blank or "a test connect" to the database fails.
I have created a Google Cloud Project MySQL database to use in conjunction with the Jdbc service provided by Google Apps Script. Everything went as planned with the connection. I am basically connecting as it does in the docs.
var conn = Jdbc.getCloudSqlConnection(dbUrl, user, userPwd);
I shared the file with another account and all of a sudden I am seeing a red error saying:
'Failed to establish a database connection. Check connection string, username and password.'
Nothing changed in the code, but there is an error. When I go back to my original account and run the same bit of code, there is no error. What is happening here? Any ideas?
Jdbc.getConnection works from both: my account and another account:
var conn = Jdbc.getConnection('jdbc:mysql://' + IP + ':3306/' + database_name, user, password)
I'm really confused because the recommended method did not work.
There are two ways of establishing a connection with a Google Cloud
SQL database using Apps Script's JDBC service:
(Recommended) Connecting using Jdbc.getCloudSqlConnection(url)
Connecting using Jdbc.getConnection(url)
Notes:
IP is a Public IP address from the OVERVIEW tab in your database console:
I've allowed any host when created a user:
I am not sure whether this question has been resolved or not, but let me add this answer.
I also faced the same problem but I found the resolution. What I did is:
First, go to the console.
https://console.cloud.google.com
Then, open IAM.
and add the account as a member and add this permission: "Cloud SQL Client".
I think this is a permission issue in your second account. Necessary information are missing in your question. But, the secound account, if run as a another user, won't necessarily have your sqlservice authorization. The permission,
https://www.googleapis.com/auth/sqlservice
Manage the data in your Google SQL Service instances
is required to use Jdbc.getCloudSqlConnection(url), while Jdbc#getConnectionUrl() just requires external link connection permission
https://www.googleapis.com/auth/script.external_request
I believe that you can only connect to sql instances owned by you with getCloudSqlConnection() which doesn't even require external connection permission. This method probably calls your sql instance internally.
References:
Jdbc#getCloudConnection
Jdbc#getConnection
Conclusion
To connect to any external service, you need external_request permission. But, You don't need that permission to connect to your own documents say, Spreadsheets owned by you/have edit access permission - through SpreadsheetApp.openByUrl(). I believe it's the same thing with Jdbc.getCloudSqlConnection(). It calls your Google sql internally - So, even if you grant external request permission, It won't work. What will work for this method is
Installable triggers (which runs as you).
Add the second account also as owner in GCP-IAM (may not work though) See this answer
I'd double-check once again all IP ranges which should be whitelisted. According to your description it worked fine in first account, probably in second account Apps Script uses another IP for connection, which was not whitelisted or whitelisted with some typo. Could you share screenshot how did you exactly whitelist the ranges from this article?
I have a GAS Add-On that uses a Google cloud dB. I initially set this up by:
Whitelisting Google Cloud IP ranges in my SQL instance
Getting the script.external_request scope approved for OAuth Consent screen
This all works great from GAS for the add-on, but I suspect that if this whitelist is not comprehensive and volatile (which I expect it is), I will see intermittent connectivity issues.
I recently added a Firebase web app that needs access to the same dB. I had issues, because Firebase does not conform to those Google IP ranges and does not expose its IP for whitelisting. So I had to create a socket layer connection as if Firebase was an external service.
Which got me thinking, should I put a socket layer in my GAS Add-On? But nothing in the GAS JBDC Class documentation indicates a socket parameter.
Which leads me to a question that was not really answered in this thread:
Does anyone know why Jdbc.getCloudSqlConnection(url) is the "Recommended" approach? The documentation seems to imply that because the IP whitelisting is not required, Jdbc.getCloudSqlConnection(url) is using a socket (or some other secure method) to connect to the dB?
It also seems silly that if that is the case, that I would need two have two sensitive scopes to manage a dB connection. I would rather not go through another OAuth const audit and require my users to accept another scope unless there is a benefit to doing so.
I built an app to offer a client of the company I work for that I deployed to Firebase. It uses Firebase storage for retrieving files as well as the realtime database. It's actually just the front-end portion of a two-app suite I made; the backend portion is used by an admin for uploading files, checking data, etc --- which data then becomes available to view over the frontend. Both use firebase.
It turns out the devices that would need to access the app (tablets mostly) are inside of an extranet with a server that can establish VPN connections only. Now I'm being asked how I can build the app so these devices can access the app.
I don't know much about the inner-workings of Firebase but it seems to me I may have couple of options:
1) Figure out how to make the FB database accessible over VPN (preferable)
2) Reconfigure the app to use something like MongoDB. Instead of deploying on a remote server, let the on-site server service the devices using the app. Send files that are needed by the server via FTP over the VPN, then process these files on-site.
Problem: I'm using a Mac and the on-site server uses Windows. It will be a pain to install things on a Windows machine remotely, let alone set up the VPN.
Any ideas? I'm sure there are parts of this question where I've made wrong assumptions --- I've never needed to do things over a VPN before.
I am installing WordPress on Herokou app, I want to use external MySQL database that is hosted on Google SQL Cloud. I need a static IP or IP pool to enable on Goolges side firewall I can't figure out how to do so? or if this is a valid option using Herokou
Love to hear your thoughts
Using the Google Developer Console, select your Cloud SQL instance, go to 'ACCESS CONTROL' tab and add your application static IP Address/IP pool to the 'Authorize Networks' section. This will enable access to Cloud SQL instance from those IP addresses.
Good morning,
I have found that many of my customers have MS Access already installed on their PCs. Although Access is very limited as a data store, I have found that it is great for deploying low-cost front-ends for entry level customers.
I want to start renting a VPS, so I can host customer databases using Microsoft SQL Server 2008, which they can access using a locally stored Access front-end. I do have a few questions though:
In order to access the remotely hosted databases, and use the security features, would the VPS need to be set up as a domain controller, using AD DS? If I am hosting multiple customer databases, this is not an option.
What I envisage is being able to set up a simple MS Access front end, to access a MS SQL Server database on my VPS. For security, I would want the database to use the Windows account on the client machine to authenticate, and also to provide basic data change tracking.
Is this possible? Or, will I need to set up a server for each client and have it configured as a domain controller, etc?
You can have many databases on the same server, so for each client you d not need to setup a separate domain controller. Only the connection strings will be different.
You can use SSL for establishing connection with the remote server to make the process more secure. You can also make a few web services to play with the data (CRUD operations), this would also make things more manageable.
take care :)