create-setup-replica.sh

#! /bin/bash

die() {
    echo "$*" >&2
    exit 1
}


if (($# != 1)); then
    echo "usage: $0 switchname" >&2
    exit 1
fi

name="$1"
r="$(getent hosts "$name")" || die "$name: no ip address"
address=$(echo "$r"|awk '{print $1}')
fullname=$(echo "$r"|awk '{print $2}')
shortname=${fullname%.molgen.mpg.de}
now=$(date -u +%m%d%H%M%Y )

credentials="$(cat .credentials)" || exit 1

case "$name" in
    delta-tn48m-poe-*)
	ports=52
        ;;
    ec-as5114-48x-*)
	ports=48
        ;;
    *)
        die "$name: unknown switch type"
        ;;
esac

cat <<__EOF__
date -u $now
ln -sf /usr/share/zoneinfo/Europe/Berlin /etc/localtime
echo "$fullname" > /etc/hostname
mv /etc/systemd/network/oob.network /etc/systemd/network/oob.network.REPLICA
cat >/etc/systemd/network/oob.network <<EOF
[Match]
Name=oob0

[Network]
Address=$address/16
Gateway=172.20.0.1
DNS=141.14.16.1
NTP=141.14.16.215
EOF
mv /etc/systemd/network/swbridge.network /etc/systemd/network/swbridge.network.REPLICA

cat >/etc/systemd/network/swbridge.network <<EOF
[Match]
Name=swbridge
EOF

mv /etc/systemd/network/swbridge.netdev /etc/systemd/network/swbridge.netdev.REPLICA
cat >/etc/systemd/network/swbridge.netdev <<EOF
[NetDev]
Name=swbridge
Kind=bridge

[Bridge]
STP=true
VLANFiltering=true
EOF

echo '$credentials' | chpasswd -e
mkdir /var/molgen
cat > /var/molgen/setup.sh <<'EOF'
#! /bin/bash
test -e /var/molgen/vlan.sh && /var/molgen/vlan.sh || true
EOF
chmod +x /var/molgen/setup.sh
cat > /etc/systemd/system/molgen.service <<'EOF'
[Unit]
After=network.target

[Service]
Type=oneshot
ExecStart=/var/molgen/setup.sh
RemainAfterExit=yes

[Install]
WantedBy=multi-user.target
EOF
systemctl enable molgen
reboot
__EOF__