Public wiki / guides / administration / linux

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• Benchmarking Linux disk and SSD speed with hdparm, dd and fio — Three common Linux tools for measuring disk/SSD read, write and random-I/O throughput, from a quick built-in check to a realistic load test.
• Configuring DNS resolution with systemd-resolved — Set up systemd-resolved for asynchronous, cached DNS resolution on a Linux host, including the symlink needed to actually use it and a Proxmox LXC gotcha.
• Installing telegram-send for scripted Telegram notifications — Install the telegram-send CLI and work around a python-telegram-bot version incompatibility that breaks it on first run.