#DOCKER RUN IMAGE MOUNT VOLUME UPDATE#
UPDATE – As pointed out in the comments by Patrick Flynn, the environment variables ACCEPT_EULA and SA_PASSWORD do not need to be set for the second container as we have persisted the system databases so their values have been retainedĬonnect to the SQL instance in the new container…
So we can now spin up another container, using those volumes: – That container is gone, but we still have our named volumes: – (NAME = N'testdatabase_log', FILENAME = N'/var/opt/sqlserver/testdatabase_log.ldf') (NAME = N'testdatabase', FILENAME = N'/var/opt/sqlserver/testdatabase.mdf') Let’s create a database on the mssqluser named volume: – This means the user databases will be in the new instance in the new container (as long as we’ve persisted the location of those databases, which we’re doing with the mssqluser named volume). If we didn’t mount a named volume for the system databases any changes to those databases (particularly for the master database) would not be persisted so the new container would have no record of any user databases created.īy persisting the location of the system databases, when SQL starts up in the new container the changes made to the master database are retained and therefore has a record of the user databases. This is the key to the databases automatically being attached in the new container, /var/opt/mssql is the location of the system databases. The mssqluser named volume is going to be mounted as /var/opt/sqlserver and the mssqlsystem volume is going to be mounted as /var/opt/mssql. – Thanks to Anthony Nocentino ( b| t) for pointing this out to me…it was a real d’oh moment 🙂įirst thing, is to create two named volumes: –Īnd now spin up a container with the volumes mapped: – With Docker, you have 3 different syntaxes to mount NFS volumes : simple container (via docker volume create + docker run) single service (via docker service create) complete stack (docker deploy -f stack.yml) I actually had some trouble mounting NFS volumes, especially with images that COPY files into declared volumes. Thankfully there’s an easy way to do it, so let’s run through how here. This isn’t really ideal, what we’d want is for the databases to automatically be attached to the new container. I’ve previously talked about using named volumes to persist SQL Server databases but in that post I only used one named volume and I had to manually reattach the databases after the container spun up.
0 kommentar(er)
