Self-Hosted Main

515 readers

1 users here now

A place to share alternatives to popular online services that can be self-hosted without giving up privacy or locking you into a service you don't control.

For Example

Service: Dropbox - Alternative: Nextcloud
Service: Google Reader - Alternative: Tiny Tiny RSS
Service: Blogger - Alternative: WordPress

We welcome posts that include suggestions for good self-hosted alternatives to popular online services, how they are better, or how they give back control of your data. Also include hints and tips for less technical readers.

Useful Lists

Awesome-Selfhosted List of Software
Awesome-Sysadmin List of Software

founded 1 year ago

MODERATORS

communick@selfhosted.forum

How to prevent rogue docker containers from wreaking havoc? (alien.top)

submitted 1 year ago by jschwalbe@alien.top to c/main@selfhosted.forum

25 comments fedilink hide all child comments

There was a recent post about whether to enable ufw and it made me ask: how protected I am from a rogue docker container? I have a single server with 15-20 docker containers running at any given time. Should one get hacked or be malicious from the get go, are there (hopefully easy to implement for an armchair sysadmin) best practices to mitigate such an event? Thanks!

you are viewing a single comment's thread
view the rest of the comments

[–] wzzrd@alien.top 1 points 1 year ago (2 children)

Run a server with SELinux enabled, and use Podman instead of docker (Podman I assume has better selinux support)

[–] redzero36@alien.top 1 points 1 year ago

Never heard of podman but what I read on google is that its a drop in replacement for docker. Even read you can alias podman for docker. So does that mean we can just use docker images and docker compose files with podman? Are there drawbacks for using podman instead of docker?

[–] yrro@alien.top 1 points 1 year ago

This. On RHEL (or Fedora or CentOS Stream) containers are confined by the container_t domain and SELinux policy prevents them from interfering with host resources. In addition each container runs with a unique set of MCS labels, which stops a rogue container from interfering with other containers.