Sure, docker-compose is great, but could we get similar functionality using just the tools that are built into CoreOS? Can we get automatic updates, too? Yes we can! 📦
I use podman because it’s more secure. I’m willing to put in the extra effort so that all my services aren’t running as root. If it turns out a vulnerability is discovered in lemmy tomorrow that allows people to access my server through my lemmy container, the attacker will only have access to a dummy account that hosts my containers. Yes, they could stop all my containers, but they can’t delete the volumes or any other data on my server.
Don’t let perfection be the enemy of good. Security is not all or nothing. Reducing the attack surface is still important.
Can you elaborate on running docker daemon as rootless? It’s my understanding that you can add your account to a group to access the docker daemon rootless, but the containers are still running as root, as the daemon itself raises the access to root.
but the containers are still running as root, as the daemon itself raises the access to root.
No. The daemon can run without root, as such the containers don’t have root. My docker install doesn’t have root access. None of my stacks / containers need any root access tbh. I don’t have any troubles with deplyong stuff.
I think you’re interpreting too much. Security is about layers and making it harder for attackers, and that’s exactly what using a non-root user does.
In that scenario, the attacker needs to find and exploit another vulnerability to gain root access, which takes time - time which the attacker might not be willing to spend and time which you can use to respond.
Funny how you claim to know so much about security but can’t even seem to comprehend my comment. I know root shell exploits exist, that’s why I wrote that it takes additional time to get root access, not that it’s impossible. And that’s still a security improvement because it’s an additional hurdle for the adversary.
I use podman because it’s more secure. I’m willing to put in the extra effort so that all my services aren’t running as root. If it turns out a vulnerability is discovered in lemmy tomorrow that allows people to access my server through my lemmy container, the attacker will only have access to a dummy account that hosts my containers. Yes, they could stop all my containers, but they can’t delete the volumes or any other data on my server.
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Don’t let perfection be the enemy of good. Security is not all or nothing. Reducing the attack surface is still important.
Can you elaborate on running docker daemon as rootless? It’s my understanding that you can add your account to a group to access the docker daemon rootless, but the containers are still running as root, as the daemon itself raises the access to root.
No. The daemon can run without root, as such the containers don’t have root. My docker install doesn’t have root access. None of my stacks / containers need any root access tbh. I don’t have any troubles with deplyong stuff.
https://docs.docker.com/engine/security/rootless/
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I never said I was relying on it alone. Not sure why you think that.
That’s a great link. Thank you for sharing. It’s good that docker supports this functionality now.
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I think you’re interpreting too much. Security is about layers and making it harder for attackers, and that’s exactly what using a non-root user does.
In that scenario, the attacker needs to find and exploit another vulnerability to gain root access, which takes time - time which the attacker might not be willing to spend and time which you can use to respond.
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Funny how you claim to know so much about security but can’t even seem to comprehend my comment. I know root shell exploits exist, that’s why I wrote that it takes additional time to get root access, not that it’s impossible. And that’s still a security improvement because it’s an additional hurdle for the adversary.