252 lines
7.3 KiB
Bash
Executable File
252 lines
7.3 KiB
Bash
Executable File
#!/bin/bash
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# set -x
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# This is the connection to this host, where the VM is being stored
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qemu_connection="qemu+ssh://virsh@10.0.1.253/system"
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qemu_password="seBGtkWFKZuFUFgig8NYU5uh"
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# This is the connection to the MAAS server
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maas_url="http://192.168.1.22:5240/MAAS/api/2.0/"
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maas_api_key="z9cT7jE3BhmxcXkWWN:ew5WW9QdDMg8TXVnjt:NtKgJdfgA5FVw2YT9CnaKU87wJ5fTxKa"
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# Storage area and type
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storage_path="/var/lib/libvirt/maas-images"
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storage_format="raw"
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# Host prefix
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compute="as1-maas-node"
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# Number of control nodes, and theeir specifications
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control_count=1
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control_cpus=3
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control_ram=8192
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# Total number of VMs, and their specifications
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node_count=11
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node_start=1
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node_cpus=2
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node_ram=4096
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# Models for nic and storage
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nic_model="virtio"
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stg_bus="scsi"
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# The default network to use
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network="maas"
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# Sizes of disks for each of the VMs
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d1=50
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d2=20
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d3=20
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# how long you want to wait for commissioning
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# default is 1200, i.e. 20 mins
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commission_timeout=1200
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# Time between building VMs
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build_timeout=60
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# This logs in to maas, and sets up the admin profile
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maas_login()
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{
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sudo apt -u update && sudo apt -y install maas-cli jq bc
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echo ${maas_api_key} | maas login admin ${maas_url} -
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}
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# Grabs the unique system)id for the host human readable hostname
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maas_machine_id()
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{
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node_name=$1
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maas admin machines read hostname=${node_name} | jq ".[].system_id" | sed s/\"//g
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}
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# Adds the VM into MAAS
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maas_add_node()
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{
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node_name=$1
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mac_addr=$2
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node_type=$3
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maas admin machines create \
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hostname=${node_name} \
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mac_addresses=${mac_addr} \
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architecture=amd64/generic \
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power_type=virsh \
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power_parameters_power_id=${node_name} \
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power_parameters_power_address=${qemu_connection} \
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power_parameters_power_pass=${qemu_password}
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system_id=$(maas_machine_id ${node_name})
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time_start=$(date +%s)
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time_end=${time_start}
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status_name=$(maas admin machine read ${system_id} | jq ".status_name" | sed s/\"//g)
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while [[ ${status_name} != "Ready" ]] && [[ $( echo ${time_end} - ${time_start} | bc ) -le ${commission_timeout} ]]
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do
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sleep 20
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status_name=$(maas admin machine read ${system_id} | jq ".status_name" | sed s/\"//g)
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time_end=$(date +%s)
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done
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# If the tag doesn't exist, then create it
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if [[ $(maas admin tag read ${node_type}) == "Not Found" ]] ; then
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maas admin tags create name=${node_type}
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fi
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# Assign the tag to the machine
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maas admin machine update ${system_id} tags="${node_type}"
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maas_auto_assign_networks ${system_id}
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}
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# Attempts to auto assign all the networks for a host
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maas_auto_assign_networks()
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{
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system_id=$1
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node_interfaces=$(maas admin interfaces read ${system_id} | jq ".[] | {id:.id, name:.name, mode:.links[].mode, subnet:.links[].subnet.id }" --compact-output)
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for interface in ${node_interfaces}
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do
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int_id=$(echo $interface | jq ".id" | sed s/\"//g)
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subnet_id=$(echo $interface | jq ".subnet" | sed s/\"//g)
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mode=$(echo $interface | jq ".mode" | sed s/\"//g)
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if [[ $mode != "auto" ]] ; then
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maas admin interface link-subnet ${system_id} ${int_id} mode="AUTO" subnet=${subnet_id}
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fi
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done
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}
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create_vms() {
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maas_login
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create_storage
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build_vms
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}
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wipe_vms() {
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maas_login
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destroy_vms
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}
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create_storage() {
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for ((machine="$node_start"; machine<=node_count; machine++)); do
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printf -v maas_node %s-%02d "$compute" "$machine"
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mkdir -p "$storage_path/$maas_node"
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/usr/bin/qemu-img create -f "$storage_format" "$storage_path/$maas_node/$maas_node-d1.img" "$d1"G &
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/usr/bin/qemu-img create -f "$storage_format" "$storage_path/$maas_node/$maas_node-d2.img" "$d2"G &
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/usr/bin/qemu-img create -f "$storage_format" "$storage_path/$maas_node/$maas_node-d3.img" "$d3"G &
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done
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wait
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}
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wipe_disks() {
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for ((machine="$node_start"; machine<=node_count; machine++)); do
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printf -v maas_node %s-%02d "$compute" "$machine"
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virsh --connect qemu:///system shutdown "$maas_node"
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rm -rf "$storage_path/$maas_node/$maas_node-d1.img" &
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rm -rf "$storage_path/$maas_node/$maas_node-d2.img" &
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rm -rf "$storage_path/$maas_node/$maas_node-d3.img" &
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done
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create_storge
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wait
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}
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# Builds the VMs from scratch, and then adds them to MAAS
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build_vms() {
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for ((virt="$node_start"; virt<=node_count; virt++)); do
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printf -v virt_node %s-%02d "$compute" "$virt"
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ram="$node_ram"
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vcpus="$node_cpus"
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node_type="compute"
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if [[ $virt -le $control_count ]] ; then
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ram="$control_ram"
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vcpus="$control_cpus"
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node_type="control"
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fi
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bus=$stg_bus
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macaddr1=$(printf '52:54:00:63:%02x:%02x\n' "$((RANDOM%256))" "$((RANDOM%256))")
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macaddr2=$(printf '52:54:00:63:%02x:%02x\n' "$((RANDOM%256))" "$((RANDOM%256))")
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macaddr3=$(printf '52:54:00:63:%02x:%02x\n' "$((RANDOM%256))" "$((RANDOM%256))")
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macaddr4=$(printf '52:54:00:63:%02x:%02x\n' "$((RANDOM%256))" "$((RANDOM%256))")
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macaddr5=$(printf '52:54:00:63:%02x:%02x\n' "$((RANDOM%256))" "$((RANDOM%256))")
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virt-install -v --noautoconsole \
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--print-xml \
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--autostart \
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--boot network,hd,menu=on \
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--video qxl,vram=256 \
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--channel spicevmc \
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--name "$virt_node" \
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--ram "$ram" \
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--vcpus "$vcpus" \
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--console pty,target_type=serial \
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--graphics spice,clipboard_copypaste=no,mouse_mode=client,filetransfer_enable=off \
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--cpu host-passthrough,cache.mode=passthrough \
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--controller "$bus",model=virtio-scsi,index=0 \
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--disk path="$storage_path/$virt_node/$virt_node-d1.img,format=$storage_format,size=$d1,bus=$bus,io=native,cache=directsync" \
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--disk path="$storage_path/$virt_node/$virt_node-d2.img,format=$storage_format,size=$d2,bus=$bus,io=native,cache=directsync" \
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--disk path="$storage_path/$virt_node/$virt_node-d3.img,format=$storage_format,size=$d3,bus=$bus,io=native,cache=directsync" \
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--network=bridge="br-enp1s0",mac="$macaddr1",model=$nic_model \
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--network=bridge="br-enp1s0.301",mac="$macaddr2",model=$nic_model \
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--network=bridge="br-enp1s0.302",mac="$macaddr3",model=$nic_model \
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--network=bridge="br-enp1s0.303",mac="$macaddr4",model=$nic_model \
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--network=bridge="br-enp1s0.304",mac="$macaddr5",model=$nic_model > "$virt_node.xml" &&
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virsh define "$virt_node.xml"
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virsh start "$virt_node" &
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maas_add_node ${virt_node} ${macaddr1} ${node_type} &
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# Wait some time before building the next, this helps with a lot of DHCP requests
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# and ensures that all VMs are commissioned and deployed.
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sleep ${build_timeout}
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done
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wait
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}
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destroy_vms() {
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for ((node="$node_start"; node<=node_count; node++)); do
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printf -v compute_node %s-%02d "$compute" "$node"
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# If the domain is running, this will complete, else throw a warning
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virsh --connect qemu:///system destroy "$compute_node"
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# Actually remove the VM
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virsh --connect qemu:///system undefine "$compute_node"
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# Remove the three storage volumes from disk
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for disk in {1..3}; do
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virsh vol-delete --pool "$compute_node" "$compute_node-d${disk}.img"
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done
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rm -rf "$storage_path/$compute_node/"
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sync
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rm -f "$compute_node.xml" \
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"/etc/libvirt/qemu/$compute_node.xml" \
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"/etc/libvirt/storage/$compute_node.xml" \
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"/etc/libvirt/storage/autostart/$compute_node.xml"
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machine_id=$(maas_machine_id ${compute_node})
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maas admin machine delete ${machine_id}
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done
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}
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while getopts ":cwd" opt; do
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case $opt in
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c)
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create_vms
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;;
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w)
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wipe_vms
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;;
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d)
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wipe_disks
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;;
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\?)
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echo "Invalid option: -$OPTARG" >&2
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;;
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esac
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done
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