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|
#!/bin/bash
#
# Library of shell functions
#
generate_ssh_key() {
local user=${USER}
if [ -n "${SUDO_USER}" ] && [ "${SUDO_USER}" != 'root' ]; then
user=${SUDO_USER}
fi
[ -f "${SSH_KEY}" ] || ssh-keygen -f "${SSH_KEY}" -N ''
install -o "${user}" -m 0600 "${SSH_KEY}" /tmp/
}
get_base_image() {
local base_image=$1
mkdir -p images
wget -P /tmp -nc "${base_image}"
}
cleanup_vms() {
# clean up existing nodes
for node in $(virsh list --name | grep -P '\w{3}\d{2}'); do
virsh destroy "${node}"
done
for node in $(virsh list --name --all | grep -P '\w{3}\d{2}'); do
virsh undefine --nvram "${node}"
done
}
prepare_vms() {
local -n vnodes=$1
local base_image=$2
cleanup_vms
get_base_image "${base_image}"
envsubst < user-data.template > user-data.sh
for node in "${vnodes[@]}"; do
# create/prepare images
./create-config-drive.sh -k "${SSH_KEY}.pub" -u user-data.sh \
-h "${node}" "images/mcp_${node}.iso"
cp "/tmp/${base_image/*\/}" "images/mcp_${node}.qcow2"
qemu-img resize "images/mcp_${node}.qcow2" 100G
done
}
create_networks() {
local -n vnode_networks=$1
# create required networks
for net in "${vnode_networks[@]}"; do
if virsh net-info "${net}" >/dev/null 2>&1; then
virsh net-destroy "${net}"
virsh net-undefine "${net}"
fi
# in case of custom network, host should already have the bridge in place
if [ -f "net_${net}.xml" ]; then
virsh net-define "net_${net}.xml"
virsh net-autostart "${net}"
virsh net-start "${net}"
fi
done
}
create_vms() {
local -n vnodes=$1
local -n vnodes_ram=$2
local -n vnodes_vcpus=$3
local -n vnode_networks=$4
# prepare network args
net_args=""
for net in "${vnode_networks[@]}"; do
net_type="network"
# in case of custom network, host should already have the bridge in place
if [ ! -f "net_${net}.xml" ]; then
net_type="bridge"
fi
net_args="${net_args} --network ${net_type}=${net},model=virtio"
done
# AArch64: prepare arch specific arguments
local virt_extra_args=""
if [ "$(uname -i)" = "aarch64" ]; then
# No Cirrus VGA on AArch64, use vga std
virt_extra_args="$virt_extra_args --video=vga"
fi
# create vms with specified options
for node in "${vnodes[@]}"; do
# shellcheck disable=SC2086
virt-install --name "${node}" \
--ram "${vnodes_ram[$node]}" --vcpus "${vnodes_vcpus[$node]}" \
--cpu host-passthrough --accelerate ${net_args} \
--disk path="$(pwd)/images/mcp_${node}.qcow2",format=qcow2,bus=virtio,cache=none,io=native \
--os-type linux --os-variant none \
--boot hd --vnc --console pty --autostart --noreboot \
--disk path="$(pwd)/images/mcp_${node}.iso",device=cdrom \
--noautoconsole \
${virt_extra_args}
done
}
update_pxe_network() {
local -n vnode_networks=$1
if virsh net-info "${vnode_networks[0]}" >/dev/null 2>&1; then
# set static ip address for salt master node, only if managed via virsh
# NOTE: below expr assume PXE network is always the first in domiflist
virsh net-update "${vnode_networks[0]}" add ip-dhcp-host \
"<host mac='$(virsh domiflist cfg01 | awk '/network/ {print $5; exit}')' name='cfg01' ip='${SALT_MASTER}'/>" --live
fi
}
start_vms() {
local -n vnodes=$1
# start vms
for node in "${vnodes[@]}"; do
virsh start "${node}"
sleep $[RANDOM%5+1]
done
}
check_connection() {
local total_attempts=60
local sleep_time=5
local attempt=1
set +e
echo '[INFO] Attempting to get into Salt master ...'
# wait until ssh on Salt master is available
while ((attempt <= total_attempts)); do
# shellcheck disable=SC2086
ssh ${SSH_OPTS} "ubuntu@${SALT_MASTER}" uptime
case $? in
0) echo "${attempt}> Success"; break ;;
*) echo "${attempt}/${total_attempts}> ssh server ain't ready yet, waiting for ${sleep_time} seconds ..." ;;
esac
sleep $sleep_time
((attempt+=1))
done
set -e
}
parse_yaml() {
local prefix=$2
local s
local w
local fs
s='[[:space:]]*'
w='[a-zA-Z0-9_]*'
fs="$(echo @|tr @ '\034')"
sed -ne "s|^\($s\)\($w\)$s:$s\"\(.*\)\"$s\$|\1$fs\2$fs\3|p" \
-e "s|^\($s\)\($w\)$s[:-]$s\(.*\)$s\$|\1$fs\2$fs\3|p" "$1" |
awk -F"$fs" '{
indent = length($1)/2;
vname[indent] = $2;
for (i in vname) {if (i > indent) {delete vname[i]}}
if (length($3) > 0) {
vn=""; for (i=0; i<indent; i++) {vn=(vn)(vname[i])("_")}
printf("%s%s%s=(\"%s\")\n", "'"$prefix"'",vn, $2, $3);
}
}' | sed 's/_=/+=/g'
}
|
