BBVA/kvm: Partially based on RancherVM project

[ahoeg]

Found that great project which looks like a improved RancherVM.

Generic container for launching a Virtual Machine inside a Docker container.
Features:

• uses QEMU/KVM to launch the VM directly with PID 1.
• Non libvirt dependant.
• It attaches to the VM as many NICs as the docker container has.
• The VM gets the original container IPs. The container gets non-conflicting IPs
• Uses macvtap tun devices for best network throughput

Maybe RancherVM could be improved with some of the features (interface mapping, ...) from BBVA/kvm?

[strowi]

This looks very interesting. I tried modifying the bbva-container to work with ranchervm, but it seems i have an error getting the container-details?

rancher_1 | 172.18.0.1 - - [02/Dec/2016 19:27:08] command: /var/lib/rancher/noVNC-0.0.2/cgi-bin/ranchervm "" rancher_1 | 172.18.0.1 - - [02/Dec/2016 19:27:09] Traceback (most recent call last): rancher_1 | File "/var/lib/rancher/noVNC-0.0.2/cgi-bin/ranchervm", line 433, in <module> rancher_1 | kvm_args = " ".join(container_details.get("Config").get("Cmd")) rancher_1 | TypeError rancher_1 |

"/var/lib/rancher/vm:/vm" is mounted in both containers, and i can see the vnc-socket in there. But the vm won't show up in the ranchervm index-page...

I only modified the startvm-script...

`
--- a/startvm
+++ b/startvm
@@ -29,6 +29,22 @@

: ${KVM_CPU_OPTS:="-m 1024 -smp 4,sockets=4,cores=1,threads=1"}

+TMPDIR=mktemp -d -t ranchervm.XXXXXX

• if [ $? -ne 0 ]
• then
• echo Fail to create temporaily directory
• exit 1
  +fi

+# If /vm does not exist, we still proceed with running KVM. We just
+# won't get a VNC console socket.
+if [ -d /vm ]; then

• DOCKERID=cat /proc/self/cgroup | grep docker | awk -F/ '{print $NF}' | cut -f 2 -d - | cut -f 1 -d . | head -1
• mkdir -p /vm/$DOCKERID
• VNC="-vnc unix:/vm/$DOCKERID/vnc"
• echo VNC server will listen on Unix socket /vm/$DOCKERID/vnc
  +fi

set -x

ContainsElement: checks if first parameter is among the array given as second parameter

@@ -288,4 +304,4 @@ if [[ "$ENABLE_DHCP" == 1 ]]; then
fi

echo "INFO: Launching $LAUNCHER -enable-kvm $KVM_BLK_OPTS $KVM_OPTS $KVM_VIDEO_OPTS $KVM_CPU_OPTS $KVM_ARGS $@ $KVM_NET_OPTS"
-eval exec $LAUNCHER -enable-kvm $KVM_BLK_OPTS $KVM_OPTS $KVM_VIDEO_OPTS $KVM_CPU_OPTS "$@" $KVM_NET_OPTS
+eval exec $LAUNCHER -enable-kvm $KVM_BLK_OPTS $KVM_OPTS $KVM_VIDEO_OPTS $KVM_CPU_OPTS "$@" $KVM_NET_OPTS $VNC

`