systemvm/debian/opt/cloud/bin/setup/postinit.sh

#!/bin/bash
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# or more contributor license agreements.  See the NOTICE file
# distributed with this work for additional information
# regarding copyright ownership.  The ASF licenses this file
# to you under the Apache License, Version 2.0 (the
# "License"); you may not use this file except in compliance
# with the License.  You may obtain a copy of the License at
#
#   http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing,
# software distributed under the License is distributed on an
# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
# KIND, either express or implied.  See the License for the
# specific language governing permissions and limitations
# under the License.
#
# This scripts before ssh.service but after cloud-early-config

# Eject cdrom if any
eject || true

# set cache back pressure based on amount of physical memory 100 is default
physmem=$(free|awk '/^Mem:/{print $2}')
if [ $((physmem)) -lt 409600 ]; then
    sed  -i "/^vm.vfs_cache_pressure/ c\vm.vfs_cache_pressure = 200" /etc/sysctl.conf
else
    sed  -i "/^vm.vfs_cache_pressure/ c\vm.vfs_cache_pressure = 100" /etc/sysctl.conf
fi
sysctl -p

# HYPERVISOR exported by cloud-early-config
HYPERVISOR=$(</etc/cloudstack-agent_detected_hypervisor)
case $HYPERVISOR in
   xen-pv|xen-domU)
      systemctl stop ntpd
      systemctl start xe-daemon
      ;;
   xen-hvm)
      systemctl stop ntpd
      systemctl start xe-daemon
      ;;
   kvm)
      systemctl start qemu-guest-agent
      VPORT=$(find /dev/virtio-ports -type l -name '*.vport' 2>/dev/null|head -1)
      ;;
   vmware)
      # system time sync'd with host via vmware tools
      systemctl stop ntpd
      systemctl start open-vm-tools
      ;;
   virtualpc|hyperv)
      # Hyper-V is recognized as virtualpc hypervisor type. Boot args are passed using KVP Daemon
      systemctl start hyperv-daemons.hv-fcopy-daemon.service hyperv-daemons.hv-kvp-daemon.service hyperv-daemons.hv-vss-daemon.service
      ;;
   virtualbox)
      # Virtualbox is used to test the virtual router
      ;;
   esac




# Restart journald for setting changes to apply
systemctl restart systemd-journald

TYPE=$(grep -Po 'type=\K[a-zA-Z]*' /var/cache/cloud/cmdline)
if [ "$TYPE" == "router" ] || [ "$TYPE" == "vpcrouter" ] || [ "$TYPE" == "dhcpsrvr" ]
then
  if [ -x /opt/cloud/bin/update_config.py ]
  then
      /opt/cloud/bin/update_config.py cmd_line.json || true
  fi
fi

[ ! -f /var/cache/cloud/enabled_svcs ] && touch /var/cache/cloud/enabled_svcs
for svc in $(cat /var/cache/cloud/enabled_svcs)
do
   systemctl enable --now --no-block $svc
done

[ ! -f /var/cache/cloud/disabled_svcs ] && touch /var/cache/cloud/disabled_svcs
for svc in $(cat /var/cache/cloud/disabled_svcs)
do
   systemctl disable --now --no-block $svc
done

# Restore the persistent iptables nat, rules and filters for IPv4 and IPv6 if they exist
ipv4="/etc/iptables/rules.v4"
if [ -e $ipv4 ]
then
   iptables-restore < $ipv4
fi

ipv6="/etc/iptables/rules.v6"
if [ -e $ipv6 ]
then
   ip6tables-restore < $ipv6
fi

# Enable SSH
systemctl enable --now --no-block ssh

date > /var/cache/cloud/boot_up_done