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Joined 2 years ago
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Cake day: June 4th, 2023

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  • DNS over HTTPS (DoH), which is Domain Name Service over Secure HyperText Transfer Protocol. HTTP is the technology the Web runs on. The S in HTTPS is the secured version of HTTP, it’s encrypted using TLS (originally was SSL, Secure Sockets Layer), Transport Layer Security. DNS translates site names (e.g., www.google.com) into an IP (Internet Protocol) address (e.g., 8.8.8.8). DNS is an unencrypted protocol like HTTP. Adding in the Security component is somewhat tricky, but DoH is one of the ways, it just piggy backs on a tried and true secure transport technology that powers the web today.

    The reason you would want to use DoH is to secure the domains you are accessing from (1) being intercepted and/or altered, e.g., someone poisoning the response and giving you a bad IP address for any number of reasons, and (2) snoops such as the WiFi provider you’re connected to or the Internet Service Provider (ISP) or cellular provider, or anyone else watching the unencrypted traffic.


  • I’m really not sure. I’ve heard of people using Ceph across datacenters. Presumably that’s with a fast-ish connection, and it’s like joining separate clusters, so you’d likely need local ceph cluster at each site then replicate between datacenters. Probably not what you’re looking for.

    I’ve heard good things about Garbage S3 and that it’s usable across the internet on slow-ish connections. Combined with JuiceFS is what I was looking at using before I landed on Ceph.





  • Try these steps:

    $ sudo apt-get purge nvidia* # remove current installed nvidia software including drivers
    $ sudo ubuntu-drivers devices # verify it sees your graphics card
    $ sudo ubuntu-drivers autoinstall # install drivers automatically
    $ sudo reboot
    

    This is everything I ended up doing which eventually fixed it for me:

    # Update repo
    sudo apt update
    
    # Remove amdgpu drivers
    sudo apt purge xserver-xorg-video-amdgpu
    sudo apt purge libdrm-amdgpu*
    sudo apt purge libdrm-amdgpu1
    
    # Blacklist the amdgpu driver since we are using nvidia only
    echo "blacklist amdgpu" | sudo tee -a /etc/modprobe.d/blacklist.conf
    
    # Remove nvidia driver and install from system76 repo
    sudo apt purge *nvidia*
    sudo apt-add-repository -y ppa:system76-dev/stable
    sudo apt install -y system76-driver-nvidia
    sudo apt upgrade -y
    sudo reboot