59 lines
No EOL
1.6 KiB
Nix
59 lines
No EOL
1.6 KiB
Nix
# minimal set of scripts and services by various images
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{ pkgs, lib, ... }: {
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# bring back simple interface names like eth0 eth1 etc
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grub-ifnames-0 = pkgs.writeText "grub-ifnames-0" ''
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GRUB_CMDLINE_LINUX="net.ifnames=0 biosdevname=0 $GRUB_CMDLINE_LINUX"
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'';
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# no need for CPU microcode updating in VMs
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grub-disable-microcode = pkgs.writeText "grub-disable-microcode" ''
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GRUB_CMDLINE_LINUX="dis_ucode_ldr $GRUB_CMDLINE_LINUX"
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'';
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# dhcp for eth0
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eth0-dhcp-network = pkgs.writeText "eth0-network" ''
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[Match]
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Name=eth0
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[Network]
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DHCP=yes
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'';
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# generate ssh host keys before starting sshd
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ssh-service-override-conf-create = pkgs.writeScript "ssh-override-conf-create.sh" ''
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mkdir -p /etc/systemd/system/ssh.service.d
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cat > /etc/systemd/system/ssh.service.d/override.conf << EOF
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[Service]
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ExecStartPre=
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ExecStartPre=`which ssh-keygen` -A
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ExecStartPre=`which sshd` -t
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EOF
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'';
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# script to grow root partition
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grow-root-sh = pkgs.writeScript "grow-root-sh" ''
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#!/bin/bash
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set -e
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command -v growpart >/dev/null || { >&2 echo "growpart not found. Install package cloud-guest-utils or cloud-utils."; exit 1; }
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ROOTPART=$(findmnt / -o source -n)
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DISK=''${ROOTPART%[0-9]*}
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PARTNUM=''${ROOTPART##*[!0-9]}
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# resize and grow if possible
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growpart "$DISK" "$PARTNUM" && resize2fs "$ROOTPART" || true
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'';
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# service to grow root partition on boot
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grow-root-service = pkgs.writeText "grow-root-service" ''
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[Service]
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Type = oneshot
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ExecStart = /usr/local/sbin/grow-root.sh
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[Install]
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WantedBy = multi-user.target
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'';
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} |