connection string for sqlserver in Docker container

Question

I\'m using Visual Studio 2017 for mac with dotnet Core and EF Core. After setting up the mssql image in Docker container , I was trying to add the connection string but thr

Answer 1

Most likely your server name is localhost and port 1401 (which is the default for Docker container setup). Therefore, you'll need to use the following connection string:

"Default": "Server=localhost,1401; Database=ERPDb; User=sa; Password =******;"

Answer 2

Rather than use IP addresses, which would be problematic in a team environment, you can also use host.docker.internal which will resolve to your host IP.

Data Source=host.docker.internal,1433;Initial Catalog=MyDB;User ID=MyUser;Password=MyPassword

Answer 3

I just wrote up a blog post on this. Take a look at richminchuk.io. Otherwise:

sudo docker pull microsoft/mssql-server-linux:2017-latest
docker run \
   -e 'ACCEPT_EULA=Y' \
   -e 'MSSQL_SA_PASSWORD=YourSTRONG!Passw0rd' \
   -p 1401:1433 \
   -n sql1 \
   -d microsoft/mssql-server-linux:2017-latest

then,

private static string _connStr = @"
   Server=127.0.0.1,1401;
   Database=Master;
   User Id=SA;
   Password=YourSTRONG!Passw0rd
";

Answer 4

I solved it by using SQL server Container IP address by inspecting the sql server container for its IP address as shown below

docker inspect -f "{{range.NetworkSettings.Networks}}{{.IPAddress}}{{end}}" <ContainerID | ContainerName>

Answer 5

I had this problem today and I resolved it using a separate network (instead of using default "bridge" network).

1. docker network create test_network

2. docker container run -p 1433:1433 -d --name mssql -v mssql_data:/var/opt/mssql -e SA_PASSWORD=********** -e ACCEPT_EULA=Y --network=test_network microsoft/mssql-server-linux

3. docker container run -p 5000:80 --rm -e ASPNETCORE_ENVIRONMENT=Development --name aspnetcore --network=test_network aspnetcore-image

Also I have such connection string:

Server=mssql;Database=master;User=sa;Password=**********;

About previous answers regarding Connection String with IP address, it is not a good approach, because this address can be changed dynamically, it is better to use container names, as hostnames.