simple kvm builder using cloud images

1 files changed, 124 insertions, 0 deletions

diff --git a/global/overlay/usr/local/sbin/cosmos_vm b/global/overlay/usr/local/sbin/cosmos_vm
new file mode 100755
index 0000000..bf27576
--- /dev/null
+++ b/global/overlay/usr/local/sbin/cosmos_vm
@@ -0,0 +1,124 @@
+#!/bin/bash
+
+set -- $(getopt h?H:D?s:B:M:C:R:i:g:n:I:G:N: "$@")
+
+src_image=""
+size="1G"
+dhcp="no"
+hostname="default"
+bridge="br0"
+cpus="1"
+mem="1024"
+repo="git://code.mnt.se/mnt-cosmos.git"
+tag="eduid-cosmos"
+ip=""
+gateway=""
+netmask=""
+resolver=""
+ip6=""
+gateway6=""
+netmask6="64"
+
+while [ $# -gt 0 ]; do
+   case "$1" in
+      (-h) echo "Usage: $0 [-h] [-H hostname] [-M <memory>] [-C <#cpus>] [-B <bridge>] [-D (dhcp)] [-i/-I <ip4/6>] [-n/-N <mask4/6>] [-g/-G <gw4/6>] [-R <resolver(s)>] [-s <src image>]"; exit 0;;
+      (-H) hostname="$2"; shift;; 
+      (-s) src_image="$2"; shift;;
+      (-D) dhcp="yes" ;;
+      (-S) size="$2"; shift;;
+      (-B) bridge="$2"; shift;;
+      (-M) mem="$2"; shift;;
+      (-C) cpus="$2"; shift;;
+      (-R) resolver="$2"; shift;;
+      (-i) ip="$2"; shift;;
+      (-g) gateway="$2"; shift;;
+      (-n) netmask="$2"; shift;;
+      (-I) ip6="$2"; shift;;
+      (-G) gateway6="$2"; shift;;
+      (-N) netmask6="$2"; shift;;
+      (--) shift; break;;
+      (-*) echo "Unknown option $1\nUsage: $0 [-h] [-H hostname] [-M <memory>] [-C <#cpus>] [-B <bridge>] [-D (dhcp)] [-i/-I <ip4/6>] [-n/-N <mask4/6>] [-g/-G <gw4/6>] [-R <resolver(s)>] [-s <src image>]"; exit 1;;
+      (*) break;;
+   esac
+   shift
+done
+
+id=$(uuidgen)
+
+seed=${id}_seed.img
+disk=${id}.img
+
+rm -f ${seed}
+truncate --size 2M ${seed}
+mkfs.vfat -n cidata ${seed} 2>/dev/null
+
+user_data=$(mktemp)
+cat > ${user_data} <<EOF
+#cloud-config
+password: ubuntu
+chpasswd: { expire: False }
+ssh_pwauth: True
+ssh_authorized_keys:
+   - ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABAQDVvB4gdJ6EWRmx8xUSxrhoUNnWxEf8ZwAqhzC1+7XBY/hSd/cbEotLB9gxgqt0CLW56VU4FPLTw8snD8tgsyZN6KH1Da7UXno8oMk8tJdwLQM0Ggx3aWuztItkDfBc3Lfvq5T07YfphqJO7rcSGbS4QQdflXuOM9JLi6NStVao0ia4aE6Tj68pVVb3++XYvqvbU6NtEICvkTxEY93YpnRSfeAi64hsbaqSTN4kpeltzoSD1Rikz2aQFtFXE03ZC48HtGGhdMFA/Ade6KWBDaXxHGARVQ9/UccfhaR2XSjVxSZ8FBNOzNsH4k9cQIb2ndkEOXZXnjF5ZjdI4ZU0F+t7 leifj+00060AD478D6@sunet.se
+runcmd:
+   - ["mkdir","/tmp/seed"]
+   - ["mount","/dev/vdb","/tmp/seed"]
+   - ["cp","/tmp/seed/bootstrap-cosmos.sh","/tmp/seed/cosmos_1.2-2_all.deb","/root"]
+   - ["cd","/root"]
+   - "cd /root && /root/bootstrap-cosmos.sh ${hostname} ${repo} ${tag}"
+
+EOF
+
+meta_data=$(mktemp)
+cat > ${meta_data} <<EOF
+#cloud-config
+instance-id: iid-${id}
+local-hostname: ${hostname}
+EOF
+
+if [ "x${dhcp}" = "xyes" ]; then
+cat >> ${meta_data} <<EOF
+network-interfaces: |
+    auto eth0
+    iface eth0 inet dhcp
+EOF
+else
+  if [ "x${ip}" != "x" ]; then
+     cat >> ${meta_data} <<EOF
+network-interfaces: |
+    auto eth0
+    iface eth0 inet static
+        address ${ip}
+        netmask ${netmask}
+        gateway ${gateway}
+        dns-nameservers ${resolver}
+
+EOF
+  fi
+
+  if [ "x${ip6}" != "x" ]; then
+     cat >> ${meta_data} <<EOF
+network-interfaces: |
+    auto eth0
+    iface eth0 inet6 static
+        address ${ip6}
+        netmask ${netmask6}
+        gateway ${gateway6}
+        dns-nameservers ${resolver}
+
+EOF
+  fi
+fi
+
+mcopy -i ${seed} ${user_data} ::user-data 2>/dev/null
+mcopy -i ${seed} ${meta_data} ::meta-data 2>/dev/null
+mcopy -i ${seed} /etc/cosmos/apt/bootstrap-cosmos.sh /etc/cosmos/apt/cosmos_1.2-2_all.deb ::
+mv ${seed} /var/lib/libvirt/images/
+virsh pool-refresh default
+
+virsh vol-clone --pool default ${src_image} ${disk}
+
+virt-install -r ${mem} -n ${hostname} --vcpus=${cpus} --autostart --memballoon virtio --network bridge=${bridge} --boot hd --disk vol=default/${disk},format=qcow2,bus=virtio --disk vol=default/${seed},bus=virtio
+
+rm -f ${user_data}
+rm -f ${meta_data}