Question
Does Digital Ocean have a Docker image (or a Dockerfile to create one) that is exactly the same as the one in the Ubuntu 18.04 droplet?
- Posted on January 8, 2019
- DockerUbuntu 18.04
Asked by daviddo
Hi, I would like to “emulate” a Digital Ocean Ubuntu droplet in my Mac (iOS) locally. Does Digital Ocean have an image (or a Dockerfile to create one) that is exactly the same as the one in the droplet? That’s my question, if you need more details about it, there you have:
- Why I’m asking it? I would like to emulate on my Mac what is going on in the server (droplet). For ex, I would like to make mySQL to restart if the server reboots. I can’t reboot the droplet, so I want to test if my code works on my local version. (Actually, can I reboot the droplet to test if mySQL restarts?)
- What have I tried so far? I tried to create an Ubuntu image via Dockerfile (“FROM Ubuntu”), but when I install mysql-server on this image via Dockerfile (“sudo apt install -y mysql-server”) and I open the bash of this image (“exec”), mysql can’t be started (“fail” and “ERROR 2002 (HY000): Can’t connect to local MySQL server through socket ‘/var/run/mysqld/mysqld.sock’ (2)”). If I go inside the bash of the container, uninstall mysql and install manually, then I can run it. But to emulate what I want, I need that the image has mysql running automatically.
I know that Amazon has something similar (https://aws.amazon.com/amazon-linux-ami/), so I guess that maybe DO have its own too. Thank you.
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Hey friend,
Great question! We don’t have one, but our images are basically just this: https://cloud-images.ubuntu.com/
That said, I’d like to focus more on the reasons for doing it, as I think there may be a better path.
Making MySQL start on boot should be just something like this:
systemctl enable mysqlThat enables the service to start on boot. No need to test it, as it will work unless another circumstance exists that needs your manual intervention, such as a corrupted database. There’s really no good way to automate that specific scenario that doesn’t put you at greater risk.
Jarland
Thank you, you helped a lot!
Thank you, you helped a lot!