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deploy_vms_cluster.sh
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deploy_vms_cluster.sh
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#!/usr/bin/env bash
set -e
usage() {
echo "
Usage: $0 -o %OS_NAME% [options]
Options:
-o|--os OS_NAME
Supported OS list
* centos
* atomic-centos
* atomic-fedora
* clearlinux (not yet supported)
* ubuntu
* ubuntu-core (not yet supported)
* debian
* fedora
* opensuse
* windows
* freebsd
-c|--channel CHANNEL
channel name
-r|--release RELEASE
OS release
-s|--size CLUSTER_SIZE
Amount of virtual machines in a cluster. [default: 1]
-p|--pub-key PUBLIC_KEY
Path to public key. Private key path will
be detected automatically. [default: ~/.ssh/id_rsa.pub]
-i|--config CLOUD_CONFIG
Path to cloud-config. [default: internal]
-m|--ram RAM
Amount of memory in megabytes for each VM. [default: 512]
-u|--cpu CPUs
Amount of CPUs for each VM. [default: 1]
-v|--verbose Make verbose
-h|--help This help message
This script is a wrapper around libvirt for starting a cluster of virtual machines.
"
}
print_red() {
printf '%b' "\033[91m$1\033[0m\n"
}
print_green() {
printf '%b' "\033[92m$1\033[0m\n"
}
check_cmd() {
which "$1" >/dev/null || { print_red "'$1' command is not available, please install it first, then try again" && exit 1; }
}
check_genisoimage() {
if which genisoimage >/dev/null; then
GENISOIMAGE=$(which genisoimage)
else
if which mkisofs >/dev/null; then
GENISOIMAGE=$(which mkisofs)
else
print_red "Neither 'genisoimage' nor 'mkisofs' command is available, please install it first, then try again"
exit 1
fi
fi
}
check_hypervisor() {
export LIBVIRT_DEFAULT_URI=qemu:///system
if ! virsh list > /dev/null 2>&1; then
export LIBVIRT_DEFAULT_URI=bhyve:///system
if ! virsh list > /dev/null 2>&1; then
print_red "Failed to connect to the hypervisor socket"
exit 1
fi
fi
}
handle_channel_release() {
if [ -z "$1" ]; then
print_green "$OS_NAME doesn't use channel"
else
: ${CHANNEL:=$1}
if [ -n "$OPTVAL_CHANNEL" ]; then
CHANNEL=$OPTVAL_CHANNEL
else
print_green "Using default $CHANNEL channel for $OS_NAME"
fi
fi
if [ -z "$2" ]; then
print_green "$OS_NAME doesn't use release"
else
: ${RELEASE:=$2}
if [ -n "$OPTVAL_RELEASE" ]; then
RELEASE=$OPTVAL_RELEASE
else
print_green "Using default $RELEASE release for $OS_NAME"
fi
fi
}
check_cmd wget
check_cmd virsh
check_cmd virt-install
check_cmd qemu-img
check_cmd xzcat
check_cmd bzcat
check_cmd cut
check_cmd sed
check_genisoimage
check_hypervisor
USER_ID=${SUDO_UID:-$(id -u)}
USER=$(getent passwd "${USER_ID}" | cut -d: -f1)
HOME=$(getent passwd "${USER_ID}" | cut -d: -f6)
trap usage EXIT
while [ $# -ge 1 ]; do
case "$1" in
-o|--os)
OPTVAL_OS_NAME="$2"
shift 2 ;;
-c|--channel)
OPTVAL_CHANNEL="$2"
shift 2 ;;
-r|--release)
OPTVAL_RELEASE="$2"
shift 2 ;;
-s|--cluster-size)
OPTVAL_CLUSTER_SIZE="$2"
shift 2 ;;
-p|--pub-key)
OPTVAL_PUB_KEY="$2"
shift 2 ;;
-i|--config)
OPTVAL_CLOUD_CONFIG="$2"
shift 2 ;;
-m|--ram)
OPTVAL_RAM="$2"
shift 2 ;;
-u|--cpu)
OPTVAL_CPU="$2"
shift 2 ;;
-v|--verbose)
set -x
shift ;;
-h|-help|--help)
usage
trap - EXIT
trap
exit ;;
*)
break ;;
esac
done
trap - EXIT
trap
RAM_min=0
CPUs_min=0
OS_NAME=$OPTVAL_OS_NAME
case "$OS_NAME" in
flatcar)
echo "Use ./deploy_flatcar_cluster.sh script"
exit 1
;;
atomic-centos)
BOOT_HOOK="bootcmd:
- echo 'DHCP_HOSTNAME=\${HOSTNAME}' >> /etc/sysconfig/network
runcmd:
- systemctl restart NetworkManager"
handle_channel_release '' 7
SSH_USER=centos
IMG_NAME="CentOS-Atomic-Host-${RELEASE}-GenericCloud.qcow2"
IMG_URL="http://cloud.centos.org/centos/${RELEASE}/atomic/images/CentOS-Atomic-Host-${RELEASE}-GenericCloud.qcow2.xz"
;;
atomic-fedora)
BOOT_HOOK="bootcmd:
- echo 'DHCP_HOSTNAME=\${HOSTNAME}' >> /etc/sysconfig/network
runcmd:
- systemctl restart NetworkManager"
handle_channel_release 27 20180419.0
SSH_USER=fedora
IMG_NAME="CentOS-Atomic-Host-${RELEASE}-GenericCloud.qcow2"
IMG_URL="https://download.fedoraproject.org/pub/alt/atomic/stable/Fedora-Atomic-${CHANNEL}-${RELEASE}/CloudImages/x86_64/images/Fedora-Atomic-${CHANNEL}-${RELEASE}.x86_64.qcow2"
;;
centos)
BOOT_HOOK="bootcmd:
- echo 'DHCP_HOSTNAME=\${HOSTNAME}' >> /etc/sysconfig/network
runcmd:
- service network restart"
handle_channel_release 8.3.2011-20201204.2 8
IMG_NAME="CentOS-${RELEASE}-x86_64-GenericCloud.qcow2"
IMG_URL="https://cloud.centos.org/centos/${RELEASE}/x86_64/images/CentOS-${RELEASE}-GenericCloud-${CHANNEL}.x86_64.qcow2"
;;
fedora)
BOOT_HOOK="bootcmd:
- echo 'DHCP_HOSTNAME=\${HOSTNAME}' >> /etc/sysconfig/network"
handle_channel_release 33 1.2
IMG_NAME="Fedora-Cloud-Base-${CHANNEL}-${RELEASE}.x86_64.qcow2"
IMG_URL="https://download.fedoraproject.org/pub/fedora/linux/releases/${CHANNEL}/Cloud/x86_64/images/Fedora-Cloud-Base-${CHANNEL}-${RELEASE}.x86_64.qcow2"
;;
opensuse)
BOOT_HOOK="bootcmd:
- echo 'DHCP_HOSTNAME=\${HOSTNAME}' >> /etc/sysconfig/network
runcmd:
- service network restart"
handle_channel_release '' 13.2
IMG_NAME="openSUSE-${RELEASE}-OpenStack-Guest.x86_64.qcow2"
IMG_URL="http://download.opensuse.org/repositories/Cloud:/Images:/openSUSE_${RELEASE}/images/openSUSE-${RELEASE}-OpenStack-Guest.x86_64.qcow2"
SKIP_SSH_CHECK=true
;;
debian)
BOOT_HOOK="runcmd:
- service networking restart"
handle_channel_release 10 current
IMG_NAME="debian-${CHANNEL}-openstack-amd64.qcow2"
IMG_URL="http://cdimage.debian.org/cdimage/openstack/${RELEASE}/debian-${CHANNEL}-openstack-amd64.qcow2"
;;
ubuntu)
BOOT_HOOK="runcmd:
- service networking restart"
handle_channel_release focal current
# extra size for images
IMG_SIZE="10G"
IMG_NAME="${CHANNEL}-server-cloudimg-amd64.qcow2"
if [ "$CHANNEL" != "trusty" ] && [ "$CHANNEL" != "xenial" ]; then
IMG_URL="https://cloud-images.ubuntu.com/daily/server/${CHANNEL}/${RELEASE}/${CHANNEL}-server-cloudimg-amd64.img"
else
IMG_URL="https://cloud-images.ubuntu.com/daily/server/${CHANNEL}/${RELEASE}/${CHANNEL}-server-cloudimg-amd64-disk1.img"
fi
;;
ubuntu-core)
BOOT_HOOK="runcmd:
- service networking restart"
handle_channel_release 15.04 current
SSH_USER=ubuntu
IMG_NAME="core-${CHANNEL}-amd64.qcow2"
IMG_URL="https://cloud-images.ubuntu.com/ubuntu-core/${CHANNEL}/core/stable/${RELEASE}/core-stable-amd64-disk1.img"
;;
freebsd)
handle_channel_release 12.1 RELEASE
#SKIP_CLOUD_CONFIG=true
#NETWORK_DEVICE="e1000"
IMG_NAME="FreeBSD-${CHANNEL}-${RELEASE}-amd64.qcow2"
IMG_URL="http://ftp.freebsd.org/pub/FreeBSD/releases/VM-IMAGES/${CHANNEL}-${RELEASE}/amd64/Latest/FreeBSD-${CHANNEL}-${RELEASE}-amd64.qcow2.xz"
SKIP_SSH_CHECK=true
;;
clearlinux)
LATEST=$(curl -s https://download.clearlinux.org/latest)
IMG_NAME="clear-${LATEST}-kvm.img"
IMG_URL="https://download.clearlinux.org/releases/${LATEST}/clear/clear-${LATEST}-kvm.img.xz"
DISK_FORMAT="raw"
SKIP_SSH_CHECK=true
;;
windows)
check_cmd bsdtar
WIN_VARIANTS="IE6.XP IE7.Vista IE8.XP IE8.Win7 IE9.Win7 IE10.Win7 IE10.Win8 IE11.Win7 IE11.Win8.1 IE11.Win10"
handle_channel_release '' IE11.Win7
for WIN_VARIANT in $WIN_VARIANTS; do
if [ "$RELEASE" = "$WIN_VARIANT" ]; then
FOUND_RELEASE=true
break;
fi
done
if [ -z $FOUND_RELEASE ]; then
print_red "$RELEASE is not a correct release name"
print_green "Available releases for $OPTVAL_OS_NAME:"
for WIN_VARIANT in $WIN_VARIANTS; do
print_green " * $WIN_VARIANT"
done
exit 1
fi
IE_VERSION=$(echo "$RELEASE" | cut -d. -f1)
WIN_VERSION=$(echo "$RELEASE" | cut -d. -f2,3)
if [ "$WIN_VERSION" = "XP" ]; then
WIN_VERSION_EXTRA="Win$WIN_VERSION"
else
WIN_VERSION_EXTRA=$WIN_VERSION
fi
IMG_NAME="${IE_VERSION}-${WIN_VERSION}-disk1.vmdk"
if [ "$RELEASE" = "IE11.Win10" ]; then
IMG_URL="https://az792536.vo.msecnd.net/vms/VMBuild_20150801/VirtualBox/MSEdge/Windows/Microsoft%20Edge.Win10.For.Windows.VirtualBox.zip"
else
IMG_URL="https://az412801.vo.msecnd.net/vhd/VMBuild_20141027/VirtualBox/${IE_VERSION}/Windows/${IE_VERSION}.${WIN_VERSION}.For.Windows.VirtualBox.zip"
fi
DISK_BUS="ide"
DISK_FORMAT="vmdk"
NETWORK_DEVICE="rtl8139"
RAM_min=1024
CPUs_min=2
SKIP_CLOUD_CONFIG=true
SKIP_SSH_CHECK=true
;;
'')
print_red "OS should be specified"
usage
exit 1
;;
*)
print_red "'$1' OS is not supported"
usage
exit 1
;;
esac
SSH_USER=${SSH_USER:-$OS_NAME}
virsh list --all --name | grep -q "^${OS_NAME}1$" && { print_red "'${OS_NAME}1' VM already exists"; exit 1; }
: ${CLUSTER_SIZE:=1}
if [ -n "$OPTVAL_CLUSTER_SIZE" ]; then
if [[ ! "$OPTVAL_CLUSTER_SIZE" =~ ^[0-9]+$ ]]; then
print_red "'$OPTVAL_CLUSTER_SIZE' is not a number"
usage
exit 1
fi
CLUSTER_SIZE=$OPTVAL_CLUSTER_SIZE
fi
: ${INIT_PUB_KEY:="$HOME/.ssh/id_rsa.pub"}
if [ -n "$OPTVAL_PUB_KEY" ]; then
INIT_PUB_KEY=$OPTVAL_PUB_KEY
fi
if [ -z "$INIT_PUB_KEY" ] || [ ! -f "$INIT_PUB_KEY" ]; then
print_red "SSH public key path is not valid or not specified"
if [ -n "$HOME" ]; then
PUB_KEY_PATH="$HOME/.ssh/id_rsa.pub"
else
print_red "Can not determine home directory for SSH pub key path"
exit 1
fi
print_green "Will use default path to SSH public key: $PUB_KEY_PATH"
if [ ! -f "$PUB_KEY_PATH" ]; then
print_red "Path $PUB_KEY_PATH doesn't exist"
PRIV_KEY_PATH=$(echo "${PUB_KEY_PATH}" | sed 's#.pub##')
if [ -f "$PRIV_KEY_PATH" ]; then
print_green "Found private key, generating public key..."
if [ -n "$SUDO_UID" ]; then
sudo -u "$USER" ssh-keygen -y -f "$PRIV_KEY_PATH" | sudo -u "$USER" tee "${PUB_KEY_PATH}" > /dev/null
else
ssh-keygen -y -f "$PRIV_KEY_PATH" > "${PUB_KEY_PATH}"
fi
else
print_green "Generating private and public keys..."
if [ -n "$SUDO_UID" ]; then
sudo -u "$USER" ssh-keygen -t rsa -N "" -f "$PRIV_KEY_PATH"
else
ssh-keygen -t rsa -N "" -f "$PRIV_KEY_PATH"
fi
fi
fi
else
PUB_KEY_PATH="$INIT_PUB_KEY"
print_green "Will use following path to SSH public key: $PUB_KEY_PATH"
fi
OPENSTACK_DIR="openstack/latest"
PUB_KEY=$(cat "${PUB_KEY_PATH}")
PRIV_KEY_PATH=$(echo ${PUB_KEY_PATH} | sed 's#.pub##')
CDIR=$(cd `dirname $0` && pwd)
IMG_PATH="${HOME}/libvirt_images/${OS_NAME}"
DISK_BUS=${DISK_BUS:-virtio}
NETWORK_DEVICE=${NETWORK_DEVICE:-virtio}
DISK_FORMAT=${DISK_FORMAT:-qcow2}
if [ -n "$OPTVAL_CLOUD_CONFIG" ] && [ -f "$OPTVAL_CLOUD_CONFIG" ]; then
USER_DATA_TEMPLATE=$OPTVAL_CLOUD_CONFIG
print_green "Will use custom cloud-config (${USER_DATA_TEMPLATE})"
fi
: ${RAM:=512}
if [ -n "$OPTVAL_RAM" ]; then
if [[ ! "$OPTVAL_RAM" =~ ^[0-9]+$ ]]; then
print_red "'$OPTVAL_RAM' is not a valid amount of RAM"
usage
exit 1
fi
RAM=$OPTVAL_RAM
fi
if [ "${RAM_min}" -gt "$RAM" ]; then
print_red "Recommended RAM for $OS_NAME should not be less than ${RAM_min}"
exit 1
fi
: ${CPUs:=1}
if [ -n "$OPTVAL_CPU" ]; then
if [[ ! "$OPTVAL_CPU" =~ ^[0-9]+$ ]]; then
print_red "'$OPTVAL_CPU' is not a valid amount of CPUs"
usage
exit 1
fi
CPUs=$OPTVAL_CPU
fi
if [ "${CPUs_min}" -gt "$CPUs" ]; then
print_red "Recommended CPUs for $OS_NAME should not be less than ${CPUs_min}"
exit 1
fi
IMG_EXTENSION=""
if [[ "${IMG_URL}" =~ \.([a-z0-9]+)$ ]]; then
IMG_EXTENSION=${BASH_REMATCH[1]}
fi
case "${IMG_EXTENSION}" in
bz2)
DECOMPRESS="| bzcat";;
xz)
DECOMPRESS="| xzcat";;
zip)
DECOMPRESS="| bsdtar -Oxf - '${IE_VERSION} - ${WIN_VERSION_EXTRA}.ova' | tar -Oxf - '${IE_VERSION} - ${WIN_VERSION_EXTRA}-disk1.vmdk'";;
*)
DECOMPRESS="";;
esac
if [ ! -d "$IMG_PATH" ]; then
mkdir -p "$IMG_PATH" || { print_red "Can not create $IMG_PATH directory" && exit 1; }
fi
CC="#cloud-config
password: passw0rd
chpasswd: { expire: False }
ssh_pwauth: True
users:
- default:
ssh-authorized-keys:
- '${PUB_KEY}'
${BOOT_HOOK}
"
for SEQ in $(seq 1 $CLUSTER_SIZE); do
VM_HOSTNAME="${OS_NAME}${SEQ}"
if [ -z $FIRST_HOST ]; then
FIRST_HOST=$VM_HOSTNAME
fi
if [ ! -d "$IMG_PATH/$VM_HOSTNAME/$OPENSTACK_DIR" ]; then
mkdir -p "$IMG_PATH/$VM_HOSTNAME/$OPENSTACK_DIR" || { print_red "Can not create $IMG_PATH/$VM_HOSTNAME/$OPENSTACK_DIR directory" && exit 1; }
fi
virsh pool-info $OS_NAME > /dev/null 2>&1 || virsh pool-create-as $OS_NAME dir --target "$IMG_PATH" || { print_red "Can not create $OS_NAME pool at $IMG_PATH target" && exit 1; }
# Make this pool persistent
(virsh pool-dumpxml $OS_NAME | virsh pool-define /dev/stdin)
virsh pool-start $OS_NAME > /dev/null 2>&1 || true
if [ ! -f "$IMG_PATH/$IMG_NAME" ]; then
trap 'rm -f "$IMG_PATH/$IMG_NAME"' INT TERM EXIT
eval "wget \"$IMG_URL\" -O - $DECOMPRESS > \"$IMG_PATH/$IMG_NAME\"" || { rm -f "$IMG_PATH/$IMG_NAME" && print_red "Failed to download image" && exit 1; }
trap - INT TERM EXIT
trap
fi
if [ ! -f "$IMG_PATH/${VM_HOSTNAME}.${DISK_FORMAT}" ]; then
qemu-img create -f $DISK_FORMAT -F qcow2 -b "$IMG_PATH/$IMG_NAME" "$IMG_PATH/${VM_HOSTNAME}.${DISK_FORMAT}" $IMG_SIZE || \
{ print_red "Failed to create ${VM_HOSTNAME}.${DISK_FORMAT} volume image" && exit 1; }
virsh pool-refresh $OS_NAME
fi
UUID=$(cat /proc/sys/kernel/random/uuid)
if [ -n "$USER_DATA_TEMPLATE" ] && [ -f "$USER_DATA_TEMPLATE" ]; then
sed "s#%PUB_KEY%#$PUB_KEY#g;\
s#%BOOT_HOOK%#$BOOT_HOOK#g" "$USER_DATA_TEMPLATE" > "$IMG_PATH/$VM_HOSTNAME/$OPENSTACK_DIR/user_data"
else
echo "$CC" > "$IMG_PATH/$VM_HOSTNAME/$OPENSTACK_DIR/user_data"
fi
echo -e "{ \"instance-id\": \"iid-${VM_HOSTNAME}\", \"local-hostname\": \"${VM_HOSTNAME}\", \"hostname\": \"${VM_HOSTNAME}\", \"dsmode\": \"local\", \"uuid\": \"$UUID\" }" > "$IMG_PATH/$VM_HOSTNAME/$OPENSTACK_DIR/meta_data.json"
CC_DISK=""
if [ -z $SKIP_CLOUD_CONFIG ]; then
$GENISOIMAGE \
-input-charset utf-8 \
-output "$IMG_PATH/$VM_HOSTNAME/cidata.iso" \
-volid config-2 \
-joliet \
-rock \
"$IMG_PATH/$VM_HOSTNAME" || { print_red "Failed to create ISO image"; exit 1; }
echo -e "#!/bin/sh\n$GENISOIMAGE -input-charset utf-8 -R -V $CC_VOL_ID -o \"$IMG_PATH/$VM_HOSTNAME/cidata.iso\" \"$IMG_PATH/$VM_HOSTNAME\"" > "$IMG_PATH/$VM_HOSTNAME/rebuild_iso.sh"
chmod +x "$IMG_PATH/$VM_HOSTNAME/rebuild_iso.sh"
virsh pool-refresh $OS_NAME
if [ "$LIBVIRT_DEFAULT_URI" = "bhyve:///system" ]; then
DISK_TYPE="bus=sata"
else
DISK_TYPE="device=cdrom"
fi
CC_DISK="--disk path=\"$IMG_PATH/$VM_HOSTNAME/cidata.iso\",${DISK_TYPE}"
fi
eval virt-install \
--connect $LIBVIRT_DEFAULT_URI \
--import \
--name $VM_HOSTNAME \
--ram $RAM \
--vcpus $CPUs \
--os-type=linux \
--os-variant=fedora10 \
--network network=default,model=${NETWORK_DEVICE} \
--disk path="$IMG_PATH/$VM_HOSTNAME.${DISK_FORMAT}",format=${DISK_FORMAT},bus=$DISK_BUS \
$CC_DISK \
--vnc \
--noautoconsole \
# --cpu=host
done
if [ "x${SKIP_SSH_CHECK}" = "x" ]; then
MAX_SSH_TRIES=50
for SEQ in $(seq 1 $CLUSTER_SIZE); do
VM_HOSTNAME="${OS_NAME}${SEQ}"
TRY=0
while true; do
TRY=$((TRY+1))
if [ $TRY -gt $MAX_SSH_TRIES ]; then
print_red "Can not connect to ssh, exiting..."
exit 1
fi
echo "Trying to connect to ${VM_HOSTNAME} VM, #${TRY} of #${MAX_SSH_TRIES}..."
set +e
RES=$(LANG=en_US ssh -l $SSH_USER -o BatchMode=yes -o ConnectTimeout=1 -o PasswordAuthentication=no -o StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null -i ${PRIV_KEY_PATH} $VM_HOSTNAME "uptime" 2>&1)
RES_CODE=$?
set -e
if [ $RES_CODE -eq 0 ]; then
break
else
echo "$RES" | grep -Eq "(refused|No such file or directory|reset by peer|closed by remote host|authentication failure|failure in name resolution|Could not resolve hostname)" && sleep 1 || true
fi
done
done
print_green "Cluster of $CLUSTER_SIZE $OS_NAME nodes is up and running."
fi
print_green "Use following command to connect to your cluster: 'ssh -i \"$PRIV_KEY_PATH\" $SSH_USER@$FIRST_HOST'"