70 lines
1.7 KiB
Plaintext
70 lines
1.7 KiB
Plaintext
%post
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cat > /root/.ssh/authorized_keys <<EOF
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expiry-time="$(date -d +1hour +%Y%m%d%H%M)",restrict,pty ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAICoOO/ZYMxRgmyvqZwGN3NM5pHyh3NBdC7iZrXIopt93 Host Provisioner
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EOF
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cat > /usr/local/libexec/notify-online.sh <<'EOF'
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#!/bin/sh
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set -- \
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-F "hostname=$(hostname -f)" \
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-F 'sshkeys=<-;type=text/plain'
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fw_cfg=/sys/firmware/qemu_fw_cfg/by_name/opt/dch/cfg-branch/raw
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if [ -r "${fw_cfg}" ]; then
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set -- "$@" -F branch="$(cat "${fw_cfg}")"
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fi
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cat /etc/ssh/ssh_host_*_key.pub \
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| curl -fsS https://webhooks.pyrocufflink.blue/host/online "$@"
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EOF
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chmod +x /usr/local/libexec/notify-online.sh
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cat > /etc/systemd/system/notify-online.service <<'EOF'
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[Unit]
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Description=Notify infrastructure services that this host is online
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ConditionFirstBoot=yes
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After=sshd.service
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After=network-online.target
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Wants=network-online.target
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After=systemd-user-sessions.service
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[Service]
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Type=exec
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ExecStart=/usr/local/libexec/notify-online.sh
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# Must run as root in order to read QEMU fw_config, so enable maximum
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# sandbox restrictions.
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CapabilityBoundingSet=
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DeviceAllow=
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DevicePolicy=closed
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LockPersonality=yes
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MemoryDenyWriteExecute=yes
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NoNewPrivileges=yes
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PrivateDevices=yes
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PrivateUsers=yes
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PrivateTmp=yes
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ProcSubset=pid
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ProtectClock=yes
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ProtectControlGroups=yes
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ProtectHome=yes
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ProtectHostname=yes
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ProtectKernelLogs=yes
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ProtectKernelModules=yes
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ProtectKernelTunables=yes
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ProtectProc=invisible
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ProtectSystem=strict
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RestrictAddressFamilies=AF_INET AF_INET6
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RestrictNamespaces=yes
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RestrictRealtime=yes
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RestrictSUIDSGID=yes
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SystemCallArchitectures=native
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SystemCallFilter=@system-service
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SystemCallFilter=~@privileged @resources
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[Install]
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WantedBy=multi-user.target
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EOF
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systemctl enable --no-reload notify-online.service
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%end
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