Saltstack virt module Creating virtual Machine Analysis II

That's the 2nd one today. The command execution format is as follows:

Salt ' kvm.tiancity.com ' virt.init web20 4 nic=nics Disk=system

Here, we need to be aware that the KVM/QEMU is not allowed to use the profile, we need to change the virt.py code:

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In this way, my test environment is allowed.

My idea is that my virtual machine image files are stored in the
/var/lib/libvirt/images/web20/system.raw, look at how I construct the data structure of the disk.

diskp=[{' system ': {' size ': ' 8192 ', ' format ': ' Raw ', ' model ': ' Virtio ', ' pool ': '/var/lib/libvirt/images '}]

From the analysis code,

default = [
{' System ':
{' Size ': ' 8192 '}
}
]

Elif hypervisor in [' Qemu ', ' KVM ']:
Overlay = {' format ': ' Qcow2 ',
' Model ': ' Virtio ',
' Pool ': __salt__[' config.option ' (' virt.images ')
}

Disklist = __salt__[' Config.get '] (' Virt:disk ', {}). Get (profile, default)

No, in the absence of disk profile, we use the default data and then use

For key, Val in Overlay.items ():
For I, disks in Enumerate (disklist):
For disk in disks:
If key not in Disks[disk]:
Disklist[i][disk][key] = val

You'll get to disklist=.

[{' System ': {' format ': ' Qcow2 ',
' Model ': ' Virtio ',
' Pool ': '/srv/salt-images ',
' Size ': ' 8192 '}}]

I need to change pool here, so what's my whole thing? I can use Grains,pillar to set.

[Email protected]:/srv/salt/_grains# more virt_disk_nic.py
Def disk_profile ():
Grains = {}
grains[' virt ']={' disk ': {}}
grains[' virt ' [' Disk '] [' System ']={}
grains[' virt ' [' Disk '] [' System ']=[{' system ': {' format ': ' Raw ', ' pool ': '/var/lib/libvirt/images '}]
return grains

Sync Grains

[Email protected]:/srv/salt/_grains# Salt ' kvm.tiancity.com ' Saltutil.sync_all
Kvm.tiancity.com:
----------
Grains
-Grains.virt_disk_nic
Modules
Outputters:
Renderers:
Returners:
States:

Test:
[email protected]:/srv/salt/_grains# salt ' kvm.tiancity.com ' config.get virt:disk--output=json
{
    "kvm.tiancity.com": {
        "system": [
             {
                 "System": {
                     "Pool": "/var/lib/libvirt/images",
                     " Format ":" Raw "
               }
           }
       ]
   }
}

Then the corresponding profile name is system, so if you want to use an alternative profile name, you only need to modify the

grains[' virt ' [' Disk '] [' System (Profile name) ']={}

Next, we'll construct the network card structure.

default = [{' eth0 ': {}}]

Kvm_overlay = {' type ': ' Bridge ', ' source ': ' br0 ', ' model ': ' Virtio '}

Config_data = __salt__[' Config.get '] (' Virt:nic ', {}). Get (
Profile_name, default
)

Interfaces=[]

Elif isinstance (Config_data, list):
For interface in Config_data:
If Isinstance (interface, dict):
If Len (Interface.keys ()) = = 1:
Append_dict_profile_to_interface_list (interface)
Else
Interfaces.append (interface)

The above is the addition of interface NIC related attribute information to the interfaces list.

interfaces=[{' name ': ' eth0 ', ' type ': ' Bridge ', ' source ': ' Br0 ', ' mac ': ' Ac:de:48:5d:9c:b4 ', ' model ': ' Virtio '}]

Then the network card and disk construction:

Def disk_nic ():
Grains = {}
grains[' virt ']={' disk ': {}, ' Nic ': {}}
grains[' virt ' [' Disk '] [' System ']={}
grains[' Virt ' [' Nic '] [' NICs ']=[{' eth0 ': {' bridge ': ' Br0 '}}]
grains[' virt ' [' Disk '] [' System ']=[{' system ': {' format ': ' Raw ', ' pool ': '/var/lib/libvirt/images '}]
return grains

Test:

[Email protected]:/srv/salt/_grains# Salt ' kvm.tiancity.com ' config.get virt:nic--output=json
{
"Kvm.tiancity.com": {
"NICs": [
{
"Eth0": {
"Bridge": "Br0"
}
}
]
}
}

Well, all of our things have been constructed, so let's do it and see if I can start my virtual machine web20 properly, and of course the image file has been put into/var/lib/libvirt/images/web20/system.raw.

Start executing ...

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Seconds to open ....

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Ha ha. Next time, I'll try again, add a piece of data disk and add a NIC.

Then see if you can start normally.

This article is from the "Bad Boy" blog, make sure to keep this source http://5ydycm.blog.51cto.com/115934/1589346

Saltstack virt module Creating virtual Machine Analysis II