.net 3.1 application running inside docker is failing to connect SQL server

Question

I had one application running in .net core 2.2 and connecting to SQL server 2012. Now I have upgrade my .net core application to 3.1 and also upgraded EF core. After up-gradation this application fail to connect, while running inside docker container. but if I run same application in window machine then it gets connected successfully.

divyang4481 · Accepted Answer · 2020-01-31 11:41:32Z

2

there is issue with security in docker container. this can be resolve by updating openssl.cnf inside docker

I have added following line in docker file

FROM base AS final
WORKDIR /app
RUN sed -i 's/DEFAULT@SECLEVEL=2/DEFAULT@SECLEVEL=1/g' /etc/ssl/openssl.cnf
RUN sed -i 's/DEFAULT@SECLEVEL=2/DEFAULT@SECLEVEL=1/g' /usr/lib/ssl/openssl.cnf

answered Jan 31, 2020 at 11:41

divyang4481

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3 Comments

David Browne - Microsoft Over a year ago

If this resolved your issue, you should accept this an an answer. See stackoverflow.com/help/self-answer

reggieboyYEAH Over a year ago

This did not work for me github.com/dotnet/SqlClient/issues/222#issuecomment-605559779

Mike Walton Over a year ago

@reggieboyYEAH Maybe you need to set minimum TLS protocol as well? From that same issue thread, check out the comment that has solved the problem for a lot of people: github.com/dotnet/SqlClient/issues/222#issuecomment-535941637

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