Hi all,
I'm in the process of setting up a Jenkins build environment for our
system, using a bunch of VMs to do different configuration builds. Our
architecture is:
Machine A running jenkins with the libvirt-slave plugin.
Machine B hosting KVM VMs, accessible through a NAT network, with the
SSH port on each VM forwarded to from a unique port on B so that they
can be reached from A.
For the most part it's all working quite nicely (so, thanks to all the
Jenkins people for a good system). I am running into a problem,
however, with starting up the slave nodes. When I start up Jenkins on
the master node, and manually or automatically start each slave node,
all goes well. I can do builds on them and everyone is happy. However,
I have configured the nodes to be shut down after a period of being
idle. When they try to start back up (either manually or after being
triggered by a build), I get this error:
Getting connection to the virtual datacenter
org.libvirt.LibvirtException: cannot send data: Broken pipe
at org.libvirt.ErrorHandler.processError(Unknown Source)
at org.libvirt.Connect.processError(Unknown Source)
at org.libvirt.Connect.numOfDefinedDomains(Unknown Source)
at org.libvirt.Connect.listDefinedDomains(Unknown Source)
at hudson.plugins.libvirt.Hypervisor.getDomains(Hypervisor.java:146)
at
hudson.plugins.libvirt.VirtualMachineLauncher.launch(VirtualMachineLauncher.java:99)
The virtual machine itself is running (indeed, the VM never shut down,
which I thought it was meant to do as part of the idle-offline
feature) and I can successfully ssh from A to the VM. I can also use
virsh to connect from A to the hypervisor on B and list running VMs
with no problems (using virsh --connect qemu+ssh://B/system), so short
of assuming a bug in either the libvirt java bindings or the
libvirt-slave plugin, I'm not really sure where else to look.
I'm running Jenkins 1.451 and libvirt-slave 1.6 on RHEL6.
If anyone has any suggestions or pointers I'd be very grateful.
Cheers,
Bernard
