change to start qemu

1 files changed, 68 insertions, 28 deletions

diff --git a/vm-qemu.sh b/vm-qemu.sh
index 3492eb6..ab39ef1 100755
--- a/vm-qemu.sh
+++ b/vm-qemu.sh
@@ -1,8 +1,8 @@
-#!/bin/sh
+#!/bin/bash
 #
 # Create a new VM using libvirt on the local host.
 
-set -eu
+set -eux
 
 
 verbose()
@@ -17,35 +17,75 @@ die()
     exit 1
 }
 
+cloud_init_iso()
+{
+    local hostname
+    local pubkey
+    local iso
+    local tmpdir
 
-# Check parameters.
+    hostname="$1"
+    pubkey="$2"
 
-if [ "$#" -lt 2 ]
-then
-    die "Usage: $ IMAGE PORT"
-fi
+    iso="$hostname.iso"
+    tmpdir="$(mktemp -d)"
 
+    cat <<EOF > "$tmpdir/meta-data"
+# Amazon EC2 style metadata
+local-hostname: $hostname
+EOF
+    
+    cat <<EOF > "$tmpdir/user-data"
+#cloud-config
+ssh_authorized_keys:
+- $(cat "$pubkey")
+EOF
 
-# Command line parameters: image file and port number for SSH.
-image="$1"
-port="$2"
-verbose "creating VM from image $image"
-verbose "once it's running, log in from another terminal: ssh -p $port manager@localhost"
+    genisoimage -quiet -output "$iso" -volid cidata -joliet -rock "$tmpdir"
 
-shift 2
+    rm -r "$tmpdir"
+    echo "$iso"
+}
 
-# Does the image exist?
-if [ ! -e "$image" ]
-then
-    echo "$image does not exist" 1>&2
-    exit 1
-fi
-
-# Start VM.
-qemu-system-x86_64 \
-    -enable-kvm \
-    -m 8192 \
-    -drive "file=$image,format=raw,if=virtio" \
-    -device virtio-net,netdev=user.0 \
-    -netdev "user,id=user.0,hostfwd=tcp::$port-:22"
- 
+main() {
+    local image
+    local port
+    local pubkey
+    local iso
+
+    # Check parameters.
+    if [ "$#" -lt 3 ]
+    then
+	die "Usage: $ IMAGE PORT SSH-PUBKEY-FILE"
+    fi
+
+    image="$1"
+    port="$2"
+    pubkey="$3"
+    shift 3
+
+    # Does the image exist?
+    if [ ! -e "$image" ]
+    then
+	echo "$image does not exist" 1>&2
+	exit 1
+    fi
+
+    iso="$(cloud_init_iso contractor "$pubkey")"
+
+    # Start VM.
+    qemu-system-x86_64 \
+	-name contractor \
+	-m 8192 \
+	-cpu host \
+	-smp cpus=6 \
+	-enable-kvm \
+	-drive "file=$image,format=qcow2,cache=none,if=virtio" \
+	-drive "file=$iso,if=ide,media=cdrom" \
+	-device virtio-net,netdev=user.0 \
+	-netdev "user,id=user.0,hostfwd=tcp::$port-:22" \
+	-nographic \
+	"$@"
+}
+
+main "$@"