How to secure a Kubernetes cluster by preventing unwanted modules from loading

    Date 10 Apr 2020
    518
    Posted By Brittany Day
    Security

    Looking to secure a Kubernetes cluster? One step you should take is unloading unnecessary kernel modules in your Linux containers. Learn how to stop modules from loading on your containers in a helpful tutorial.

    Kubernetes is an incredible container management system. But with that power comes a great deal of responsibility on the behalf of the developers and admins. If you aren't deploying secure containers on secure clusters, you're fighting a losing battle from the beginning.

    Fortunately, this is Linux we're talking about, so there's plenty you can do to help ensure the security of your deployments.

    One very crucial task you can undertake is to prevent unwanted kernel modules from loading on your containers. You'd be surprised at how many modules load at boot—many of them you probably don't need to be using within your containers.

    But how do you stop them from loading? I'm going to show you.

    LinuxSecurity Poll

    How do you feel about the elimination of the terms 'blacklist' and 'slave' from the Linux kernel?

    No answer selected. Please try again.
    Please select either existing option or enter your own, however not both.
    Please select minimum 0 answer(s) and maximum 3 answer(s).
    /main-polls/32-how-do-you-feel-about-the-elimination-of-the-terms-blacklist-and-slave-from-the-linux-kernel?task=poll.vote&format=json
    32
    radio
    [{"id":"112","title":"I strongly support this change - racially charged language should not be used in the code and documentation of the kernel and other open-source projects.","votes":"3","type":"x","order":"1","pct":42.86,"resources":[]},{"id":"113","title":"I'm indifferent - this small change will not affect broader issues of racial insensitivity and white privilege.","votes":"2","type":"x","order":"2","pct":28.57,"resources":[]},{"id":"114","title":"I'm opposed to this change - there is no need to change language that has been used for years. It doesn't make sense for people to take offense to terminology used in community projects.","votes":"2","type":"x","order":"3","pct":28.57,"resources":[]}] ["#ff5b00","#4ac0f2","#b80028","#eef66c","#60bb22","#b96a9a","#62c2cc"] ["rgba(255,91,0,0.7)","rgba(74,192,242,0.7)","rgba(184,0,40,0.7)","rgba(238,246,108,0.7)","rgba(96,187,34,0.7)","rgba(185,106,154,0.7)","rgba(98,194,204,0.7)"] 350
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