Docker image with EC test instance baked in
I'm trying to create a docker image with a test instance of EC baked into it, so users can start containers and have a fresh instance of EC ready to go for testing EC projects. I've run into a problem involving the agent and the database.
The docker build runs an install that includes server, agent, apache, repository, and database. However, the EC instance on such a container cannot run jobs on the agent as it has the wrong host name. To fix the agent's name, I have to--again during the build--run a script that starts the server, modifies the agent's host name, and then stops the server.
However, now when I run a container of the image created, I must first configure the database to ignore server mismatch as the first machine to talk to the db had some hexidec hostname, and the current one has a different hexidec name. I would like the test instance to be ready to go out of the gate once the container is running. Is there a way to get the db to work with this without using the ignoreServerMismatch flag (it feels hacky)?
I haven't done this with Docker but I have with other images. I think the best solution is to use localhost for the database and agent. For example, if you're using MySQL:
- ectool setDatabaseConfiguration --databaseType mysql --databaseName commander --hostName localhost --port 3306 --userName root --password commander
- ectool --silent modifyResource local --hostName localhost
I dealt with this a while back by capturing the hostname at the time the image is built, and storing that in the image itself. Then I have a simple bash script to restore the build-time hostname in the container when it is started up.
Not real pretty, so maybe also too hacky. But I don't have to modify anything in /opt/electriccloud.
Let me know if the details would be useful to you and I will track them down.
