Category: Linux

  • Comptia Linux+ study guide – by objective

    1.7 – Manage software configurations Updating configuration files Configure kernel options Configure common system services Localization

  • Comptia Linux+ study guide – by objective

    1.6 – Build and install software Package management DNF YUM APT RPM dpkg ZYpp Sandboxed applications snapd Flatpak AppImage System updates Kernel updates Package updates

  • Comptia Linux+ study guide – by objective

    1.5 – Use the appropriate networking tools or configuration files Interface management iproute2 tools – suite of tools that replace legacy utilities like netstat, ifconfig, etc. Most functions are consolidated into the ip command. ip – network configuration tool that combines the functionality of many older standalone tools into one tool with lots of sub-commands.…

  • Comptia Linux+ study guide – by objective

    1.4 – Configure and use the appropriate processes and services System services systemctl – primary tool used to manage systemd services. Can start/stop services, enable/disable services that start on boot. Can also list the system status including any failed service units, provide detailed info about a specific service, or analyze boot times. stop – stop…

  • Comptia Linux+ study guide – by objective

    1.3 – Configure and manage storage using the appropriate tools Disk partitioning fdisk – partition tool with interactive mode. fdisk -l to list partitions on all disks, or fdisk devicename to start interactive mode. Press M for help in interactive mode. parted – cli partitioning tool. Also uses interactive mode. Commands are full words instead…

  • Comptia Linux+ study guide – by objective

    1.2 – Manage files and directories File editing sed – stream editor for text manipulation. Finds and changes patterns. Useful in scripts and pipes. substitute: sed s/[old pattern]/[new pattern]/[flags] -i = edit in place, -f = use a sed script, -e = pass multiple expressions flags: g (global), e (execute after replacing), I (ignore case)…

  • Comptia Linux+ study guide – by objective

    1.1 – Summarize Linux fundamentals Filesystem Hierarchy Standard (FHS) /boot – files required for booting the system (bootloader, kernels, efi, etc) /proc – virtual fs containing kernel and process info as files. real time data /sys – virtual fs containing device, driver, kernel info as files. real time data /var – contains files whose contents…

  • reducing power consumption of proxmox nodes

    I noticed the other day that my proxmox nodes are running at max turbo frequency all the time. Even when there is virtually zero activity, the 8700 and 7700k are sitting at 4.2ghz+ on all cores. The little x270 stays locked at 3.4ghz on its two cores. Since these servers idle a huge amount, they…

  • summer server upgrade wrap-up

    It’s finally upgrade time! >(click here to skip to the new stuff)< I originally built this homelab cluster in December of 2022 for a few reasons: for fun, for learning, and to help me pivot my career away from manufacturing and into IT. I saved up a bunch of money, quit my factory job, and…

  • wireguard vpn with lan+wan access: quick and easy

    Need to be able to log in to all your homelab / server stuff on the go? Need a VPN for private browsing at work or on public wifi? Need to have access to all your Street Sharks episodes 24/7 instead of carrying a VHS player and a TV in your backpack? Want all of…

  • proxmox: get rid of gray question marks

    Sometimes you might find that one of your nodes and all its containers, VMs, and storages have gray question marks beside them. This happens because the cluster has lost quorum. When this happens, sometimes you can even still see the real-time stats in the summary page the node and machines still ticking along. Here’s the…

  • file server backup times: lxc and vm

    THE OLD: I have been using a fileserver in a Turnkey debian 11 container for several months. I allocated 8gb of the ssd for bootdrive and 2TB of my zfs pool for storage. The zfs pool is comprised of 3 old Western Digital green drives, WDEARS20, in a raidz1 configuration. It is connected with a…

  • random linux tips and tricks: february

    Here are some random things I learned this month! find files way faster than “find” with mlocate This one is cool! “Find” can be a pain in the butt sometimes, and it’s really slow if you have a large drive with lots of files on it. Using mlocate, you can find files nearly instantly by…

  • tls_process_server_certificate: certificate verify failed (596)

    Sometimes I get this error message in Proxmox after making a network change, messing with an ssh key, or some other random mistake. Once this happens, the nodes in my cluster become inaccessible through the admin interface. Here’s how I get the cluster running again: Copy and paste the command that ssh spits out to…

  • Easyengine – simple wordpress + ssl deployments

    Baby’s first VPS! Now that the homelab cluster is running multiple external services, I’m starting to hit some speed bumps. Using my single domain name with tons of port numbers was working okay to keep services separated for personal use. But now with friends and family connecting and using some of these services, it’s time…

  • proxmox wireguard + qbittorrent + samba lxc container – quick and easy

    A google search for how to create this type of container will bring up a bunch of malarkey. It doesn’t have to be that complicated. You can set this up in a few minutes super easily. The result is an extremely lightweight and effective torrent box that you can control remotely. It works great on…