CODEWITHSUNDEEP
dockerarchitecturedependenciescontainers
elp
elp

Reputation: 870

How to containerize database dependent services?

Example: I got a microservice 'Alpha', which usually connects to 'http://localhost:3306/dbforalpha'. The service depends on that database. Now I want to containerize both, the database and the service. Of course the address of the database is changing, so that I can not even build an image for service 'Alpha'.

Now I am wondering how to deal with that problem? There must be a easier way than waiting until the database container is running to check it's ip:port. Do tools like kubernetes solve this issue?

Upvotes: 0

Views: 52

Answers (1)

Uku Loskit
Uku Loskit

Reputation: 42040

Docker comes with a service discovery mechanism (this is the basic term for how services know how to talk to each other), containers can be linked together, and you can use DNS to talk to them.

For example, your alpha service could be linked to your database, and connect to db:3306, and Docker would set the necessary /etc/hosts entries in alpha, so it could resolve db to an IP.

Upvotes: 2

Related Questions