85a8f3cfe9
Many minor cleanups, including: - Consistent capitalization for ironic and bifrost - Typos - Prefer more active construction in task names - Reflow comment text where appropriate for enhanced readability Change-Id: I05a1ecd6c49003e02961ab3c9cbbcb3b31cd4af6
245 lines
7.2 KiB
Bash
Executable File
245 lines
7.2 KiB
Bash
Executable File
#!/bin/bash
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#############################################################################
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# create_nodes.sh - Script to create VM nodes for use with Ironic.
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#
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# PURPOSE
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# This script can be used to create VM instances without an operating
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# system and that are ready for netbooting. They are connected to the
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# bridge named 'brbm' (created if it does not exist).
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#
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# EXAMPLE USAGE
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# # Use defaults - Create a single node with base name of 'testvm'
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# sudo create_nodes.sh
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#
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# # Create 5 nodes
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# sudo NODECOUNT=5 create_nodes.sh
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#
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# # Create 3 nodes with base name of 'junk'
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# sudo NODEBASE=junk NODECOUNT=3 create_nodes.sh
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#
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# THANKS
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# Thanks to the author(s) of the ironic-supporting code within devstack,
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# from which all of this is derived.
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#
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# AUTHOR
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# David Shrewsbury (shrewsbury.dave@gmail.com)
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#############################################################################
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set -e # exit immediately on command error
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set -u # treat unset variables as error when substituting
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LIBVIRT_CONNECT_URI=${LIBVIRT_CONNECT_URI:-"qemu:///system"}
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export VIRSH_DEFAULT_CONNECT_URI="$LIBVIRT_CONNECT_URI"
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# VM specs
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VM_EMULATOR=${VM_EMULATOR:-/usr/bin/qemu-system-x86_64}
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VM_CPU=${VM_CPU:-1}
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VM_RAM=${VM_RAM:-3072}
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VM_DISK=${VM_DISK:-10}
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VM_MACHINE="pc-1.0"
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# CentOS provides a single emulator package
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# which differs from other distributions, and
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# needs to be explicitly set.
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if [ -e /etc/centos-release ]; then
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VM_EMULATOR=/usr/libexec/qemu-kvm
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VM_MACHINE="pc"
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fi
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# VM network
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VM_NET_BRIDGE=${VM_NET_BRIDGE:-default}
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# VM logging directory
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VM_LOGDIR=/var/log/libvirt/baremetal_logs
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#############################################################################
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# FUNCTION
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# create_node
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#
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# PARAMETERS
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# $1: Virtual machine name
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# $2: Number of CPUs for the VM
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# $3: Amount of RAM for the VM
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# $4: Disk size (in GB) for the VM
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# $5: CPU architecture (i386 or amd64)
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# $6: Network bridge for the VMs
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# $7: Path to VM emulator
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# $8: Logging directory for the VMs
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#############################################################################
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function create_node {
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NAME=$1
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CPU=$2
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MEM=$(( 1024 * $3 ))
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# extra G to allow fuzz for partition table : flavor size and registered
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# size need to be different to actual size.
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DISK=$(( $4 + 1))
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case $5 in
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i386) ARCH='i686' ;;
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amd64) ARCH='x86_64' ;;
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*) echo "Unsupported arch $5!" >&2; exit 1 ;;
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esac
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BRIDGE=$6
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EMULATOR=$7
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LOGDIR=$8
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LIBVIRT_NIC_DRIVER=${LIBVIRT_NIC_DRIVER:-"e1000"}
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LIBVIRT_STORAGE_POOL=${LIBVIRT_STORAGE_POOL:-"default"}
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LIBVIRT_CONNECT_URI=${LIBVIRT_CONNECT_URI:-"qemu:///system"}
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if ! virsh pool-list --all | grep -q $LIBVIRT_STORAGE_POOL; then
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virsh pool-define-as --name $LIBVIRT_STORAGE_POOL dir --target /var/lib/libvirt/images >&2
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virsh pool-autostart $LIBVIRT_STORAGE_POOL >&2
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virsh pool-start $LIBVIRT_STORAGE_POOL >&2
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fi
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pool_state=$(virsh pool-info $LIBVIRT_STORAGE_POOL | grep State | awk '{ print $2 }')
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if [ "$pool_state" != "running" ] ; then
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[ ! -d /var/lib/libvirt/images ] && mkdir /var/lib/libvirt/images
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virsh pool-start $LIBVIRT_STORAGE_POOL >&2
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fi
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if [ -n "$LOGDIR" ] ; then
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mkdir -p "$LOGDIR"
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if [ -e /etc/centos-release ]; then
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# NOTE(TheJulia): For some unknown reason, libvirt's log folder
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# permissions on CentOS ship in an inoperable state. Users must
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# be able to read a folder to open files in the folder structure.
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chmod o+rx "$LOGDIR/.."
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fi
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fi
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PREALLOC=
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if [ -f /etc/debian_version ]; then
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PREALLOC="--prealloc-metadata"
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fi
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VM_LOGGING="$LOGDIR/${NAME}_console.log"
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VOL_NAME="${NAME}.qcow2"
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if ! virsh list --all | grep -q $NAME; then
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virsh vol-list --pool $LIBVIRT_STORAGE_POOL | grep -q $VOL_NAME &&
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virsh vol-delete $VOL_NAME --pool $LIBVIRT_STORAGE_POOL >&2
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virsh vol-create-as $LIBVIRT_STORAGE_POOL ${VOL_NAME} ${DISK}G --format qcow2 $PREALLOC >&2
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volume_path=$(virsh vol-path --pool $LIBVIRT_STORAGE_POOL $VOL_NAME)
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# Pre-touch the VM to set +C, as it can only be set on empty files.
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touch "$volume_path"
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# NOTE(TheJulia): CentOS default installs with an XFS root, and chattr
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# fails to set +C on XFS. This could be more elegant, however the use
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# case is for CI testing.
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if [ ! -e /etc/centos-release ]; then
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chattr +C "$volume_path" || true
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fi
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vm_xml="
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<domain type='qemu'>
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<name>${NAME}</name>
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<memory unit='KiB'>${MEM}</memory>
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<vcpu>${CPU}</vcpu>
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<os>
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<type arch='${ARCH}' machine='${VM_MACHINE}'>hvm</type>
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<boot dev='network'/>
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<bootmenu enable='no'/>
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<bios useserial='yes'/>
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</os>
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<features>
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<acpi/>
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<apic/>
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<pae/>
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</features>
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<clock offset='utc'/>
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<on_poweroff>destroy</on_poweroff>
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<on_reboot>restart</on_reboot>
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<on_crash>restart</on_crash>
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<devices>
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<emulator>${EMULATOR}</emulator>
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<disk type='file' device='disk'>
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<driver name='qemu' type='qcow2' cache='writeback'/>
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<source file='${volume_path}'/>
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<target dev='vda' bus='virtio'/>
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<address type='pci' domain='0x0000' bus='0x00' slot='0x06' function='0x0'/>
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</disk>
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<controller type='ide' index='0'>
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<address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x1'/>
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</controller>
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<interface type='network'>
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<source network='${BRIDGE}'/>
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</interface>
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<input type='mouse' bus='ps2'/>
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<graphics type='vnc' port='-1' autoport='yes'/>
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<video>
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<model type='cirrus' vram='9216' heads='1'/>
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<address type='pci' domain='0x0000' bus='0x00' slot='0x02' function='0x0'/>
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</video>
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<serial type='file'>
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<source path='${VM_LOGGING}'/>
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<target port='0'/>
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<alias name='serial0'/>
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</serial>
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<serial type='pty'>
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<source path='/dev/pts/49'/>
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<target port='1'/>
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<alias name='serial1'/>
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</serial>
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<console type='file'>
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<source path='${VM_LOGGING}'/>
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<target type='serial' port='0'/>
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<alias name='serial0'/>
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</console>
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<memballoon model='virtio'>
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<address type='pci' domain='0x0000' bus='0x00' slot='0x07' function='0x0'/>
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</memballoon>
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</devices>
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</domain>
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"
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echo ${vm_xml} > /tmp/vm.xml
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virsh create /tmp/vm.xml 2>&1 >/dev/null
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if [ $? != 0 ]
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then
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echo "failed to create VM $NAME" >&2
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rm -f /tmp/vm.xml
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exit 1
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fi
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rm -f /tmp/vm.xml
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fi
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# echo mac
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local macaddr=`virsh dumpxml $NAME | grep "mac address" | head -1 | cut -d\' -f2`
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echo $macaddr
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}
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####################
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# Main script code
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####################
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NODEBASE=${NODEBASE:-testvm}
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NODECOUNT=${NODECOUNT:-1}
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NODEOUTPUT=${NODEOUTPUT:-"/tmp/baremetal.csv"}
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TEMPFILE=`mktemp`
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# must be root
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user=`whoami`
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if [ "$user" != "root" ]
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then
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echo "Must be run as root. You are $user." >&2
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exit 1
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fi
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for (( i=1; i<=${NODECOUNT}; i++ ))
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do
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name=${NODEBASE}${i}
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mac=$(create_node $name $VM_CPU $VM_RAM $VM_DISK amd64 $VM_NET_BRIDGE $VM_EMULATOR $VM_LOGDIR)
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printf "$mac,root,undefined,192.168.122.1,$VM_CPU,$VM_RAM,$VM_DISK,flavor,type,a8cb6624-0d9f-c882-affc-046ebb96ec0${i},$name,192.168.122.$((i+1))\n" >>$TEMPFILE
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done
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mv "${TEMPFILE}" "${NODEOUTPUT}"
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