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From: wido <git@git.apache.org>
To: dev@cloudstack.apache.org
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References: <git-pr-1545-cloudstack@git.apache.org>
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Subject: [GitHub] cloudstack pull request: CLOUDSTACK-8715: Add channel to Instances...
Content-Type: text/plain
Message-Id: <20160513203548.CA1F0DFC6D@git1-us-west.apache.org>
Date: Fri, 13 May 2016 20:35:48 +0000 (UTC)
archived-at: Fri, 13 May 2016 20:35:51 -0000

Github user wido commented on the pull request:

    https://github.com/apache/cloudstack/pull/1545#issuecomment-219152627
  
    @swill Yes, running this in production on our cloud
    
    I just started an Instance and the Agent (backport to 4.8, clean merge) produced this XML:
    
    ```
    <domain type='kvm'>
    <name>i-2-25-VM</name>
    <uuid>bd93ca81-d976-41be-823c-6fc0ea013111</uuid>
    <description>Ubuntu 12.04 (64-bit)</description>
    <cpu mode='host-passthrough'></cpu><sysinfo type='smbios'>
    <system>
    <entry name='manufacturer'>Apache Software Foundation</entry>
    <entry name='product'>CloudStack KVM Hypervisor</entry>
    <entry name='uuid'>bd93ca81-d976-41be-823c-6fc0ea013111</entry>
    </system>
    </sysinfo>
    <os>
    <type  arch='x86_64' machine='pc'>hvm</type>
    <boot dev='cdrom'/>
    <boot dev='hd'/>
    <smbios mode='sysinfo'/>
    </os>
    <on_reboot>restart</on_reboot>
    <on_poweroff>destroy</on_poweroff>
    <on_crash>destroy</on_crash>
    <memory>4194304</memory>
    <devices>
    <memballoon model='none'/>
    </devices>
    <vcpu>2</vcpu>
    <features>
    <pae/>
    <apic/>
    <acpi/>
    </features>
    <cputune>
    <shares>1000</shares>
    </cputune>
    <clock offset='utc'>
    <timer name='kvmclock' >
    </timer>
    </clock>
    <devices>
    <emulator>/usr/libexec/qemu-kvm</emulator>
    <interface type='bridge'>
    <source bridge='cloudbr0'/>
    <mac address='06:73:12:00:00:67'/>
    <model type='virtio'/>
    <bandwidth>
    <inbound average='128000' peak='128000'/>
    <outbound average='128000' peak='128000'/>
    </bandwidth>
    </interface>
    <console type='pty'>
    <target port='0'/>
    </console>
    <disk  device='disk' type='network'>
    <driver name='qemu' type='raw' cache='writeback' />
    <source  protocol='rbd' name='rbd-c01-p01/d70d7e6e-753d-4a0e-ad5f-ec8ac531e32b'>
    <host name='monitor.ceph.XXXX.XXXX.XXXXX.nl' port='6789'/>
    </source>
    <auth username='cloudstack'>
    <secret type='ceph' uuid='5e34fd37-1763-3092-9f51-280a31bdb36f'/>
    </auth>
    <target dev='vda' bus='virtio'/>
    <serial>d70d7e6e753d4a0ead5f</serial></disk>
    <disk  device='disk' type='network'>
    <driver name='qemu' type='raw' cache='writeback' />
    <source  protocol='rbd' name='rbd-c01-p01/3fcb9970-cf63-4251-b1b9-2d916f6ab1c6'>
    <host name='monitor.ceph.XXXXX.XXXXXX.XXXXXX.nl' port='6789'/>
    </source>
    <auth username='cloudstack'>
    <secret type='ceph' uuid='5e34fd37-1763-3092-9f51-280a31bdb36f'/>
    </auth>
    <target dev='vdb' bus='virtio'/>
    <serial>3fcb9970cf634251b1b9</serial></disk>
    <disk  device='cdrom' type='file'>
    <driver name='qemu' type='raw' cache='none' />
    <source file=''/>
    <target dev='hdc' bus='ide'/>
    </disk>
    <serial type='pty'>
    <target port='0'/>
    </serial>
    <graphics type='vnc' autoport='yes' listen='10.5.0.106' passwd='XXXXXXXX'/>
    <channel type='unix'>
    <source mode='bind' path='/var/lib/libvirt/qemu/i-2-25-VM.org.qemu.guest_agent.0'/>
    <address type='virtio-serial'/>
    <target type='virtio' name='org.qemu.guest_agent.0'/>
    </channel>
    <input type='tablet' bus='usb'/>
    </devices>
    </domain>
    ```
    
    There you see this channel added:
    
    ```
    <channel type='unix'>
    <source mode='bind' path='/var/lib/libvirt/qemu/i-2-25-VM.org.qemu.guest_agent.0'/>
    <address type='virtio-serial'/>
    <target type='virtio' name='org.qemu.guest_agent.0'/>
    </channel>
    ```
    
    In the Ubuntu 14.04 the Guest Agent is running:
    
    <pre>
    root@vhosting-relay:~# ps aux|grep qemu
    root      2789  0.0  0.0  17468   700 ?        Ss   22:19   0:00 /usr/sbin/qemu-ga --daemonize -m virtio-serial -p /dev/virtio-ports/org.qemu.guest_agent.0
    root      2890  0.0  0.0  10460   908 pts/6    S+   22:20   0:00 grep qemu
    root@vhosting-relay:~#
    </pre>
    
    From the HV I can send commands through libvirt:
    
    <pre>
    [root@n06 ~]# virsh qemu-agent-command i-2-25-VM '{"execute":"guest-ping"}'
    {"return":{}}
    
    [root@n06 ~]#
    </pre>
    
    I also re-started a Console Proxy which has a additional channel, that works as well:
    
    ```
    <channel type='unix'>
    <source mode='bind' path='/var/lib/libvirt/qemu/v-215-VM.agent'/>
    <address type='virtio-serial'/>
    <target type='virtio' name='v-215-VM.vport'/>
    </channel>
    <channel type='unix'>
    <source mode='bind' path='/var/lib/libvirt/qemu/v-215-VM.org.qemu.guest_agent.0'/>
    <address type='virtio-serial'/>
    <target type='virtio' name='org.qemu.guest_agent.0'/>
    </channel>
    ```


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