Hi list, I was wondering is there a way to add multiple files to a vm via cloud-init using python SDK. I was able to add /etc/resolv.conf and additionally I would like to add config files for NICs (ifcfg-ethX) with appropriate values (ip,gw,netmask). I used an example given here: http://www.ovirt.org/Features/Cloud-Init_Integration . But unfortunately I cannot do the same thing If I want to write multiple files to a vm in params.Action class. Thank you in advance! Best regards, Branimir
Hi list,
I was wondering is there a way to add multiple files to a vm via cloud-init using python SDK. I was able to add /etc/resolv.conf and additionally I would like to add config files for NICs (ifcfg-ethX) with appropriate values (ip,gw,netmask). I used an example given here: http://www.ovirt.org/Features/Cloud-Init_Integration . But unfortunately I cannot do the same thing If I want to write multiple files to a vm in params.Action class.
Thank you in advance! you can use the custom script text box in oVirts cloud-init section,
On 29.10.14 17:35, Branimir Pejakovic wrote: there you can add any cloud-init section - adding files examples can be found here: http://cloudinit.readthedocs.org/en/latest/topics/examples.html#writing-out-... Shahar Havivi.
Best regards,
Branimir
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On Thu, Oct 30, 2014 at 7:22 AM, Shahar Havivi <shaharh@redhat.com> wrote:
Hi list,
I was wondering is there a way to add multiple files to a vm via cloud-init using python SDK. I was able to add /etc/resolv.conf and additionally I would like to add config files for NICs (ifcfg-ethX) with appropriate values (ip,gw,netmask). I used an example given here: http://www.ovirt.org/Features/Cloud-Init_Integration . But unfortunately I cannot do the same thing If I want to write multiple files to a vm in params.Action class.
Thank you in advance! you can use the custom script text box in oVirts cloud-init section,
On 29.10.14 17:35, Branimir Pejakovic wrote: there you can add any cloud-init section - adding files examples can be found here:
http://cloudinit.readthedocs.org/en/latest/topics/examples.html#writing-out-...
Shahar Havivi.
Hi Shahar, Thank you for the reply. To be honest I knew for those scripts but I want to do it in automate fashion just like in that example that I put in my original message. I have tried to specify in params.Files class multiple files: vm_file1 = params.Files(file=[params.File(name = 'file1', content = file1_content, type_= 'PLAINTEXT')]) vm_file2 = params.Files(file=[params.File(name = 'file2', content = file2_content, type_= 'PLAINTEXT')]) and then give them as arguments to params.CloudInit _init_ constructor (files=...) just like in that example above but it seems that I am doing something wrong because it does not write multiple files - it writes only when you specify one file all right. The exception is "Error: 'list' object has no attribute 'export'" (I tried to specify those files as a list - files=[vm_file1,vm_file2]). Thanks for any help. Best regards, Branimir
On 30.10.14 10:06, Branimir Pejakovic wrote:
On Thu, Oct 30, 2014 at 7:22 AM, Shahar Havivi <shaharh@redhat.com> wrote:
Hi list,
I was wondering is there a way to add multiple files to a vm via cloud-init using python SDK. I was able to add /etc/resolv.conf and additionally I would like to add config files for NICs (ifcfg-ethX) with appropriate values (ip,gw,netmask). I used an example given here: http://www.ovirt.org/Features/Cloud-Init_Integration . But unfortunately I cannot do the same thing If I want to write multiple files to a vm in params.Action class.
Thank you in advance! you can use the custom script text box in oVirts cloud-init section,
On 29.10.14 17:35, Branimir Pejakovic wrote: there you can add any cloud-init section - adding files examples can be found here:
http://cloudinit.readthedocs.org/en/latest/topics/examples.html#writing-out-...
Shahar Havivi.
Hi Shahar,
Thank you for the reply.
To be honest I knew for those scripts but I want to do it in automate fashion just like in that example that I put in my original message. I have tried to specify in params.Files class multiple files:
vm_file1 = params.Files(file=[params.File(name = 'file1', content = file1_content, type_= 'PLAINTEXT')]) vm_file2 = params.Files(file=[params.File(name = 'file2', content = file2_content, type_= 'PLAINTEXT')])
and then give them as arguments to params.CloudInit _init_ constructor (files=...) just like in that example above but it seems that I am doing something wrong because it does not write multiple files - it writes only when you specify one file all right. The exception is "Error: 'list' object has no attribute 'export'" (I tried to specify those files as a list - files=[vm_file1,vm_file2]).
Thanks for any help. The custom script is currently the only option to add files via Cloud-Init
Thanks, Shahar Havivi.
Best regards,
Branimir
On Thu, Oct 30, 2014 at 12:02 PM, Shahar Havivi <shaharh@redhat.com> wrote:
On 30.10.14 10:06, Branimir Pejakovic wrote:
On Thu, Oct 30, 2014 at 7:22 AM, Shahar Havivi <shaharh@redhat.com> wrote:
Hi list,
I was wondering is there a way to add multiple files to a vm via cloud-init using python SDK. I was able to add /etc/resolv.conf and additionally I would like to add config files for NICs (ifcfg-ethX) with appropriate values (ip,gw,netmask). I used an example given here: http://www.ovirt.org/Features/Cloud-Init_Integration . But unfortunately I cannot do the same thing If I want to write multiple files to a vm in params.Action class.
Thank you in advance! you can use the custom script text box in oVirts cloud-init section,
On 29.10.14 17:35, Branimir Pejakovic wrote: there you can add any cloud-init section - adding files examples can be found here:
http://cloudinit.readthedocs.org/en/latest/topics/examples.html#writing-out-...
Shahar Havivi.
Hi Shahar,
Thank you for the reply.
To be honest I knew for those scripts but I want to do it in automate fashion just like in that example that I put in my original message. I have tried to specify in params.Files class multiple files:
vm_file1 = params.Files(file=[params.File(name = 'file1', content = file1_content, type_= 'PLAINTEXT')]) vm_file2 = params.Files(file=[params.File(name = 'file2', content = file2_content, type_= 'PLAINTEXT')])
and then give them as arguments to params.CloudInit _init_ constructor (files=...) just like in that example above but it seems that I am doing something wrong because it does not write multiple files - it writes only when you specify one file all right. The exception is "Error: 'list' object has no attribute 'export'" (I tried to specify those files as a list - files=[vm_file1,vm_file2]).
Thanks for any help. The custom script is currently the only option to add files via Cloud-Init
Thanks, Shahar Havivi.
Hi Shahar, Granted. But the example in python http://www.ovirt.org/Features/Cloud-Init_Integration uses custom script :) I just want to know how to do the same thing in case when I want to write more than one file to a VM - and yes - all those multiple files that I want to write are specified via custom scripts.
From the link - (The "Python SDK" paragraph: scontent object holds the custom script):
scontent = "write_files:\n- content: |\n search example.com\n nameserver 10.10.10.1\n nameserver 10.10.10.2\n path: /etc/resolv.conf" For example (and just for example), I want to write to /etc/issue and /etc/hosts not only /etc/resolv.conf. In essence, when vm goes to run-once mode I want to write more than one file to a vm via Python (using CloudInit) in automated fashion (and not touching oVirt GUI at all). Thanks in advance! Best regards, Branimir
On Thu, Oct 30, 2014 at 12:02 PM, Shahar Havivi <shaharh@redhat.com> wrote:
On 30.10.14 10:06, Branimir Pejakovic wrote:
On Thu, Oct 30, 2014 at 7:22 AM, Shahar Havivi <shaharh@redhat.com> wrote:
Hi list,
I was wondering is there a way to add multiple files to a vm via cloud-init using python SDK. I was able to add /etc/resolv.conf and additionally I would like to add config files for NICs (ifcfg-ethX) with appropriate values (ip,gw,netmask). I used an example given here: http://www.ovirt.org/Features/Cloud-Init_Integration . But unfortunately I cannot do the same thing If I want to write multiple files to a vm in params.Action class.
Thank you in advance! you can use the custom script text box in oVirts cloud-init section,
On 29.10.14 17:35, Branimir Pejakovic wrote: there you can add any cloud-init section - adding files examples can be found here:
http://cloudinit.readthedocs.org/en/latest/topics/examples.html#writing-out-...
Shahar Havivi.
Hi Shahar,
Thank you for the reply.
To be honest I knew for those scripts but I want to do it in automate fashion just like in that example that I put in my original message. I have tried to specify in params.Files class multiple files:
vm_file1 = params.Files(file=[params.File(name = 'file1', content = file1_content, type_= 'PLAINTEXT')]) vm_file2 = params.Files(file=[params.File(name = 'file2', content = file2_content, type_= 'PLAINTEXT')])
and then give them as arguments to params.CloudInit _init_ constructor (files=...) just like in that example above but it seems that I am doing something wrong because it does not write multiple files - it writes only when you specify one file all right. The exception is "Error: 'list' object has no attribute 'export'" (I tried to specify those files as a list - files=[vm_file1,vm_file2]).
Thanks for any help. The custom script is currently the only option to add files via Cloud-Init
Thanks, Shahar Havivi.
Hi Shahar,
Granted. But the example in python http://www.ovirt.org/Features/Cloud-Init_Integration uses custom script :) I just want to know how to do the same thing in case when I want to write more than one file to a VM - and yes - all those multiple files that I want to write are specified via custom scripts.
From the link - (The "Python SDK" paragraph: scontent object holds the custom script):
scontent = "write_files:\n- content: |\n search example.com\n nameserver 10.10.10.1\n nameserver 10.10.10.2\n path: /etc/resolv.conf"
For example (and just for example), I want to write to /etc/issue and /etc/hosts not only /etc/resolv.conf. In essence, when vm goes to run-once mode I want to write more than one file to a vm via Python (using CloudInit) in automated fashion (and not touching oVirt GUI at all). You don't need to use the GUI,
On 30.10.14 12:30, Branimir Pejakovic wrote: the sdks initialization have custom_script as string which is equivalent to the text box that you see in the GUI, and you can put the same content there (ie multiple files). Is that sufficient enough?
Thanks in advance!
Best regards,
Branimir
On Thu, Oct 30, 2014 at 12:39 PM, Shahar Havivi <shaharh@redhat.com> wrote:
On Thu, Oct 30, 2014 at 12:02 PM, Shahar Havivi <shaharh@redhat.com> wrote:
On 30.10.14 10:06, Branimir Pejakovic wrote:
On Thu, Oct 30, 2014 at 7:22 AM, Shahar Havivi <shaharh@redhat.com> wrote:
On 29.10.14 17:35, Branimir Pejakovic wrote:
Hi list,
I was wondering is there a way to add multiple files to a vm via cloud-init using python SDK. I was able to add /etc/resolv.conf and additionally I would like to add config files for NICs (ifcfg-ethX) with appropriate values (ip,gw,netmask). I used an example given here: http://www.ovirt.org/Features/Cloud-Init_Integration . But unfortunately I cannot do the same thing If I want to write multiple files to a vm in params.Action class.
Thank you in advance! you can use the custom script text box in oVirts cloud-init
there you can add any cloud-init section - adding files examples can be found here:
http://cloudinit.readthedocs.org/en/latest/topics/examples.html#writing-out-...
Shahar Havivi.
Hi Shahar,
Thank you for the reply.
To be honest I knew for those scripts but I want to do it in automate fashion just like in that example that I put in my original message. I have tried to specify in params.Files class multiple files:
vm_file1 = params.Files(file=[params.File(name = 'file1', content = file1_content, type_= 'PLAINTEXT')]) vm_file2 = params.Files(file=[params.File(name = 'file2', content = file2_content, type_= 'PLAINTEXT')])
and then give them as arguments to params.CloudInit _init_ constructor (files=...) just like in that example above but it seems that I am doing something wrong because it does not write multiple files - it writes only when you specify one file all right. The exception is "Error: 'list' object has no attribute 'export'" (I tried to specify those files as a list
files=[vm_file1,vm_file2]).
Thanks for any help. The custom script is currently the only option to add files via Cloud-Init
Thanks, Shahar Havivi.
Hi Shahar,
Granted. But the example in python http://www.ovirt.org/Features/Cloud-Init_Integration uses custom script :) I just want to know how to do the same thing in case when I want to write more than one file to a VM - and yes - all those multiple files that I want to write are specified via custom scripts.
From the link - (The "Python SDK" paragraph: scontent object holds the custom script):
scontent = "write_files:\n- content: |\n search example.com\n nameserver 10.10.10.1\n nameserver 10.10.10.2\n path: /etc/resolv.conf"
For example (and just for example), I want to write to /etc/issue and /etc/hosts not only /etc/resolv.conf. In essence, when vm goes to run-once mode I want to write more than one file to a vm via Python (using CloudInit) in automated fashion (and not touching oVirt GUI at all). You don't need to use the GUI,
On 30.10.14 12:30, Branimir Pejakovic wrote: section, - the sdks initialization have custom_script as string which is equivalent to the text box that you see in the GUI, and you can put the same content there (ie multiple files). Is that sufficient enough?
Hi Shahar, Thanks! I will try this one. I was not aware of this feature. Although I can see that it was mentioned on the list (my bad). Thank you for your effort! I really do appreciate it! Best regards, Branimir
On Thu, Oct 30, 2014 at 12:52 PM, Branimir Pejakovic <branimirp@gmail.com> wrote:
On Thu, Oct 30, 2014 at 12:39 PM, Shahar Havivi <shaharh@redhat.com> wrote:
On Thu, Oct 30, 2014 at 12:02 PM, Shahar Havivi <shaharh@redhat.com> wrote:
On 30.10.14 10:06, Branimir Pejakovic wrote:
On Thu, Oct 30, 2014 at 7:22 AM, Shahar Havivi <shaharh@redhat.com> wrote:
On 29.10.14 17:35, Branimir Pejakovic wrote: > Hi list, > > I was wondering is there a way to add multiple files to a vm via cloud-init > using python SDK. I was able to add /etc/resolv.conf and additionally I > would like to add config files for NICs (ifcfg-ethX) with appropriate > values (ip,gw,netmask). I used an example given here: > http://www.ovirt.org/Features/Cloud-Init_Integration . But unfortunately I > cannot do the same thing If I want to write multiple files to a vm in > params.Action class. > > Thank you in advance! you can use the custom script text box in oVirts cloud-init
there you can add any cloud-init section - adding files examples can be found here:
http://cloudinit.readthedocs.org/en/latest/topics/examples.html#writing-out-...
Shahar Havivi.
Hi Shahar,
Thank you for the reply.
To be honest I knew for those scripts but I want to do it in automate fashion just like in that example that I put in my original message. I have tried to specify in params.Files class multiple files:
vm_file1 = params.Files(file=[params.File(name = 'file1', content = file1_content, type_= 'PLAINTEXT')]) vm_file2 = params.Files(file=[params.File(name = 'file2', content = file2_content, type_= 'PLAINTEXT')])
and then give them as arguments to params.CloudInit _init_ constructor (files=...) just like in that example above but it seems that I am doing something wrong because it does not write multiple files - it writes only when you specify one file all right. The exception is "Error: 'list' object has no attribute 'export'" (I tried to specify those files as a
files=[vm_file1,vm_file2]).
Thanks for any help. The custom script is currently the only option to add files via Cloud-Init
Thanks, Shahar Havivi.
Hi Shahar,
Granted. But the example in python http://www.ovirt.org/Features/Cloud-Init_Integration uses custom
I just want to know how to do the same thing in case when I want to write more than one file to a VM - and yes - all those multiple files that I want to write are specified via custom scripts.
From the link - (The "Python SDK" paragraph: scontent object holds the custom script):
scontent = "write_files:\n- content: |\n search example.com\n nameserver 10.10.10.1\n nameserver 10.10.10.2\n path: /etc/resolv.conf"
For example (and just for example), I want to write to /etc/issue and /etc/hosts not only /etc/resolv.conf. In essence, when vm goes to run-once mode I want to write more than one file to a vm via Python (using CloudInit) in automated fashion (and not touching oVirt GUI at all). You don't need to use the GUI,
On 30.10.14 12:30, Branimir Pejakovic wrote: section, list - script :) the sdks initialization have custom_script as string which is equivalent to the text box that you see in the GUI, and you can put the same content there (ie multiple files). Is that sufficient enough?
Hi Shahar,
Thanks! I will try this one. I was not aware of this feature. Although I can see that it was mentioned on the list (my bad).
Thank you for your effort! I really do appreciate it!
Hi, Please if somebody can help me because I am pretty stuck. As I said in previous posts I used this Python example http://www.ovirt.org/Features/Cloud-Init_Integration to set root password, hostname and resolv.conf. It worked without any problems for 3.4 oVirt version and equivalent Python SDK (ovirt-engine-sdk-python-3.4.x.noarch). Then, I have tried to write through yuml scripts more conf files than just resolv.conf to configure guest. I also saw this post on the list: http://lists.ovirt.org/pipermail/users/2014-October/028539.html. So based on that, I decided to upgraded oVirt and SDK (ovirt-engine-sdk-python-3.5.0.7-1.el6.noarch) to 3.5 version. The upgrade itself passed without any problem.
From that point forward I tried to use custom_script parameter (as suggested by Shahar) inside Initialization class and CloudInit class without any luck.
Can somebody please provide a simple Python code to submit yaml script to cloud-init? Also after the upgrade the example script I mentioned above can only change hostname. It does not write resolv.conf anymore nor it sets root password. I don't know if something is changed inside methods? For example, customization of virtual machine (memory,cpu,high availability, pinning to a certain host etc works without any problems). Thank you! Best regards, Branimir
On 10/31/2014 06:47 PM, Branimir Pejakovic wrote:
On Thu, Oct 30, 2014 at 12:52 PM, Branimir Pejakovic <branimirp@gmail.com <mailto:branimirp@gmail.com>> wrote:
On Thu, Oct 30, 2014 at 12:39 PM, Shahar Havivi <shaharh@redhat.com <mailto:shaharh@redhat.com>> wrote:
On 30.10.14 12:30, Branimir Pejakovic wrote: > On Thu, Oct 30, 2014 at 12:02 PM, Shahar Havivi <shaharh@redhat.com <mailto:shaharh@redhat.com>> wrote: > > > On 30.10.14 10:06, Branimir Pejakovic wrote: > > > On Thu, Oct 30, 2014 at 7:22 AM, Shahar Havivi <shaharh@redhat.com <mailto:shaharh@redhat.com>> > > wrote: > > > > > > > On 29.10.14 17:35, Branimir Pejakovic wrote: > > > > > Hi list, > > > > > > > > > > I was wondering is there a way to add multiple files to a vm via > > > > cloud-init > > > > > using python SDK. I was able to add /etc/resolv.conf and > > additionally I > > > > > would like to add config files for NICs (ifcfg-ethX) with appropriate > > > > > values (ip,gw,netmask). I used an example given here: > > > > > http://www.ovirt.org/Features/Cloud-Init_Integration . But > > > > unfortunately I > > > > > cannot do the same thing If I want to write multiple files to a vm in > > > > > params.Action class. > > > > > > > > > > Thank you in advance! > > > > you can use the custom script text box in oVirts cloud-init section, > > > > there you can add any cloud-init section - adding files examples can be > > > > found > > > > here: > > > > > > > > > > http://cloudinit.readthedocs.org/en/latest/topics/examples.html#writing-out-... > > > > > > > > Shahar Havivi. > > > > > > > > > > > Hi Shahar, > > > > > > Thank you for the reply. > > > > > > To be honest I knew for those scripts but I want to do it in automate > > > fashion just like in that example that I put in my original message. I > > have > > > tried to specify in params.Files class multiple files: > > > > > > vm_file1 = params.Files(file=[params.File(name = 'file1', content = > > > file1_content, type_= 'PLAINTEXT')]) > > > vm_file2 = params.Files(file=[params.File(name = 'file2', content = > > > file2_content, type_= 'PLAINTEXT')]) > > > > > > and then give them as arguments to params.CloudInit _init_ constructor > > > (files=...) just like in that example above but it seems that I am doing > > > something wrong because it does not write multiple files - it writes only > > > when you specify one file all right. The exception is "Error: 'list' > > object > > > has no attribute 'export'" (I tried to specify those files as a list - > > > files=[vm_file1,vm_file2]). > > > > > > Thanks for any help. > > The custom script is currently the only option to add files via Cloud-Init > > > > Thanks, > > Shahar Havivi. > > > > > Hi Shahar, > > Granted. But the example in python > http://www.ovirt.org/Features/Cloud-Init_Integration uses custom script :) > I just want to know how to do the same thing in case when I want to write > more than one file to a VM - and yes - all those multiple files that I > want to write are specified via custom scripts. > > From the link - (The "Python SDK" paragraph: scontent object holds the > custom script): > > scontent = "write_files:\n- content: |\n search > example.com <http://example.com>\n nameserver 10.10.10.1\n nameserver > 10.10.10.2\n path: /etc/resolv.conf" > > For example (and just for example), I want to write to /etc/issue and > /etc/hosts not only /etc/resolv.conf. In essence, when vm goes to run-once > mode I want to write more than one file to a vm via Python (using > CloudInit) in automated fashion (and not touching oVirt GUI at all). You don't need to use the GUI, the sdks initialization have custom_script as string which is equivalent to the text box that you see in the GUI, and you can put the same content there (ie multiple files). Is that sufficient enough?
Hi Shahar,
Thanks! I will try this one. I was not aware of this feature. Although I can see that it was mentioned on the list (my bad).
Thank you for your effort! I really do appreciate it!
Hi,
Please if somebody can help me because I am pretty stuck. As I said in previous posts I used this Python example http://www.ovirt.org/Features/Cloud-Init_Integration to set root password, hostname and resolv.conf. It worked without any problems for 3.4 oVirt version and equivalent Python SDK (ovirt-engine-sdk-python-3.4.x.noarch).
Then, I have tried to write through yuml scripts more conf files than just resolv.conf to configure guest. I also saw this post on the list: http://lists.ovirt.org/pipermail/users/2014-October/028539.html. So based on that, I decided to upgraded oVirt and SDK (ovirt-engine-sdk-python-3.5.0.7-1.el6.noarch) to 3.5 version. The upgrade itself passed without any problem.
From that point forward I tried to use custom_script parameter (as suggested by Shahar) inside Initialization class and CloudInit class without any luck.
Can somebody please provide a simple Python code to submit yaml script to cloud-init?
Also after the upgrade the example script I mentioned above can only change hostname. It does not write resolv.conf anymore nor it sets root password. I don't know if something is changed inside methods? For example, customization of virtual machine (memory,cpu,high availability, pinning to a certain host etc works without any problems).
Thank you!
Best regards,
Branimir
The "custom_script" element doesn't work in combination with cloud-init and run once. To make it work you have to use cloud-init and a file element containing your custom script. Here you have an example: #!/usr/bin/python import base64 import re from ovirtsdk.api import API from ovirtsdk.xml import params # A simple function to encode using base64 and now new lines: def encode(s): return re.sub("\s+", "", base64.encodestring(s)) # Connect to the server: api = API( url="https://engine35.example.com/ovirt-engine/api", username="admin@internal", password="redhat123", insecure=True, debug=True ) # Find the virtual machine: myvm = api.vms.get(name="myvm") # Prepare the cloud-init custom script to write files: myscript = """\ write_files: """ # Append one file: myscript += """\ - encoding: b64 content: %s owner: root:root path: /etc/firstfile.txt permissions: '0644' """ % encode("The content of the first file") # Append another file: myscript += """\ - encoding: b64 content: %s owner: root:root path: /etc/secondfile.txt permissions: '0644' """ % encode("The content of the second file") # Prepare the action to trigger initialization using cloud-init: action = params.Action( vm=params.VM( initialization=params.Initialization( cloud_init=params.CloudInit( files=params.Files( file=[ params.File( name="myscript", type_="plaintext", content=myscript ) ] ) ) ) ) ) # Start the virtual machine: myvm.start(action) # Disconnect from the server: api.disconnect() Regarding the problem with the root password we have a bug in 3.5 that makes this fail. See here: https://bugzilla.redhat.com/1156155 The problem is that we are not passing the user name to cloud-init, and as a result it is changing the default cloud-init user password, not the root pssword. To workaround the issue you can edit the "/etc/cloud/cloud.cfg" file of the VM and change the default user name: system_info: distro: ... default_user: name: root <-- Change this from "fedora" or "cloud-init" to root -- Dirección Comercial: C/Jose Bardasano Baos, 9, Edif. Gorbea 3, planta 3ºD, 28016 Madrid, Spain Inscrita en el Reg. Mercantil de Madrid – C.I.F. B82657941 - Red Hat S.L.
On Fri, Oct 31, 2014 at 11:00 PM, Juan Hernandez <jhernand@redhat.com> wrote:
On 10/31/2014 06:47 PM, Branimir Pejakovic wrote:
On Thu, Oct 30, 2014 at 12:52 PM, Branimir Pejakovic <branimirp@gmail.com <mailto:branimirp@gmail.com>> wrote:
On Thu, Oct 30, 2014 at 12:39 PM, Shahar Havivi <shaharh@redhat.com <mailto:shaharh@redhat.com>> wrote:
On 30.10.14 12:30, Branimir Pejakovic wrote: > On Thu, Oct 30, 2014 at 12:02 PM, Shahar Havivi <shaharh@redhat.com <mailto:shaharh@redhat.com>> wrote: > > > On 30.10.14 10:06, Branimir Pejakovic wrote: > > > On Thu, Oct 30, 2014 at 7:22 AM, Shahar Havivi <shaharh@redhat.com <mailto:shaharh@redhat.com>> > > wrote: > > > > > > > On 29.10.14 17:35, Branimir Pejakovic wrote: > > > > > Hi list, > > > > > > > > > > I was wondering is there a way to add multiple files to a vm via > > > > cloud-init > > > > > using python SDK. I was able to add /etc/resolv.conf
and
> > additionally I > > > > > would like to add config files for NICs (ifcfg-ethX) with appropriate > > > > > values (ip,gw,netmask). I used an example given here: > > > > > http://www.ovirt.org/Features/Cloud-Init_Integration
. But
> > > > unfortunately I > > > > > cannot do the same thing If I want to write multiple files to a vm in > > > > > params.Action class. > > > > > > > > > > Thank you in advance! > > > > you can use the custom script text box in oVirts cloud-init section, > > > > there you can add any cloud-init section - adding files examples can be > > > > found > > > > here: > > > > > > > > > >
http://cloudinit.readthedocs.org/en/latest/topics/examples.html#writing-out-...
> > > > > > > > Shahar Havivi. > > > > > > > > > > > Hi Shahar, > > > > > > Thank you for the reply. > > > > > > To be honest I knew for those scripts but I want to do it in automate > > > fashion just like in that example that I put in my original message. I > > have > > > tried to specify in params.Files class multiple files: > > > > > > vm_file1 = params.Files(file=[params.File(name = 'file1', content = > > > file1_content, type_= 'PLAINTEXT')]) > > > vm_file2 = params.Files(file=[params.File(name = 'file2', content = > > > file2_content, type_= 'PLAINTEXT')]) > > > > > > and then give them as arguments to params.CloudInit _init_ constructor > > > (files=...) just like in that example above but it seems that I am doing > > > something wrong because it does not write multiple files - it writes only > > > when you specify one file all right. The exception is "Error: 'list' > > object > > > has no attribute 'export'" (I tried to specify those files as a list - > > > files=[vm_file1,vm_file2]). > > > > > > Thanks for any help. > > The custom script is currently the only option to add files via Cloud-Init > > > > Thanks, > > Shahar Havivi. > > > > > Hi Shahar, > > Granted. But the example in python > http://www.ovirt.org/Features/Cloud-Init_Integration uses custom script :) > I just want to know how to do the same thing in case when I want to write > more than one file to a VM - and yes - all those multiple files that I > want to write are specified via custom scripts. > > From the link - (The "Python SDK" paragraph: scontent object holds the > custom script): > > scontent = "write_files:\n- content: |\n search > example.com <http://example.com>\n nameserver 10.10.10.1\n nameserver > 10.10.10.2\n path: /etc/resolv.conf" > > For example (and just for example), I want to write to /etc/issue and > /etc/hosts not only /etc/resolv.conf. In essence, when vm goes to run-once > mode I want to write more than one file to a vm via Python
(using
> CloudInit) in automated fashion (and not touching oVirt GUI at all). You don't need to use the GUI, the sdks initialization have custom_script as string which is equivalent to the text box that you see in the GUI, and you can put the same content there (ie multiple files). Is that sufficient enough?
Hi Shahar,
Thanks! I will try this one. I was not aware of this feature. Although I can see that it was mentioned on the list (my bad).
Thank you for your effort! I really do appreciate it!
Hi,
Please if somebody can help me because I am pretty stuck. As I said in previous posts I used this Python example http://www.ovirt.org/Features/Cloud-Init_Integration to set root password, hostname and resolv.conf. It worked without any problems for 3.4 oVirt version and equivalent Python SDK (ovirt-engine-sdk-python-3.4.x.noarch).
Then, I have tried to write through yuml scripts more conf files than just resolv.conf to configure guest. I also saw this post on the list: http://lists.ovirt.org/pipermail/users/2014-October/028539.html. So based on that, I decided to upgraded oVirt and SDK (ovirt-engine-sdk-python-3.5.0.7-1.el6.noarch) to 3.5 version. The upgrade itself passed without any problem.
From that point forward I tried to use custom_script parameter (as suggested by Shahar) inside Initialization class and CloudInit class without any luck.
Can somebody please provide a simple Python code to submit yaml script to cloud-init?
Also after the upgrade the example script I mentioned above can only change hostname. It does not write resolv.conf anymore nor it sets root password. I don't know if something is changed inside methods? For example, customization of virtual machine (memory,cpu,high availability, pinning to a certain host etc works without any problems).
Thank you!
Best regards,
Branimir
The "custom_script" element doesn't work in combination with cloud-init and run once. To make it work you have to use cloud-init and a file element containing your custom script. Here you have an example:
#!/usr/bin/python
import base64 import re
from ovirtsdk.api import API from ovirtsdk.xml import params
# A simple function to encode using base64 and now new lines: def encode(s): return re.sub("\s+", "", base64.encodestring(s))
# Connect to the server: api = API( url="https://engine35.example.com/ovirt-engine/api", username="admin@internal", password="redhat123", insecure=True, debug=True )
# Find the virtual machine: myvm = api.vms.get(name="myvm")
# Prepare the cloud-init custom script to write files: myscript = """\ write_files: """
# Append one file: myscript += """\ - encoding: b64 content: %s owner: root:root path: /etc/firstfile.txt permissions: '0644' """ % encode("The content of the first file")
# Append another file: myscript += """\ - encoding: b64 content: %s owner: root:root path: /etc/secondfile.txt permissions: '0644' """ % encode("The content of the second file")
# Prepare the action to trigger initialization using cloud-init: action = params.Action( vm=params.VM( initialization=params.Initialization( cloud_init=params.CloudInit( files=params.Files( file=[ params.File( name="myscript", type_="plaintext", content=myscript ) ] ) ) ) ) )
# Start the virtual machine: myvm.start(action)
# Disconnect from the server: api.disconnect()
Regarding the problem with the root password we have a bug in 3.5 that makes this fail. See here:
https://bugzilla.redhat.com/1156155
The problem is that we are not passing the user name to cloud-init, and as a result it is changing the default cloud-init user password, not the root pssword. To workaround the issue you can edit the "/etc/cloud/cloud.cfg" file of the VM and change the default user name:
system_info: distro: ... default_user: name: root <-- Change this from "fedora" or "cloud-init" to root
-- Dirección Comercial: C/Jose Bardasano Baos, 9, Edif. Gorbea 3, planta 3ºD, 28016 Madrid, Spain Inscrita en el Reg. Mercantil de Madrid – C.I.F. B82657941 - Red Hat S.L.
Hi Juan, Sorry for the delay. Thank you very much for this. It works perfectly. Best regards, Branimir -- Branimir Pejakovic Red Hat Certified Engineer (RHCE), LPIC-1, LPIC-2, Novell CLA branimirp@gmail.com The best system administrator in the whole universe and beyond is God Himself!
On Mon, Nov 3, 2014 at 8:52 PM, Branimir Pejakovic <branimirp@gmail.com> wrote:
On Fri, Oct 31, 2014 at 11:00 PM, Juan Hernandez <jhernand@redhat.com> wrote:
On 10/31/2014 06:47 PM, Branimir Pejakovic wrote:
On Thu, Oct 30, 2014 at 12:52 PM, Branimir Pejakovic <branimirp@gmail.com <mailto:branimirp@gmail.com>> wrote:
On Thu, Oct 30, 2014 at 12:39 PM, Shahar Havivi <shaharh@redhat.com <mailto:shaharh@redhat.com>> wrote:
On 30.10.14 12:30, Branimir Pejakovic wrote: > On Thu, Oct 30, 2014 at 12:02 PM, Shahar Havivi <shaharh@redhat.com <mailto:shaharh@redhat.com>> wrote: > > > On 30.10.14 10:06, Branimir Pejakovic wrote: > > > On Thu, Oct 30, 2014 at 7:22 AM, Shahar Havivi <shaharh@redhat.com <mailto:shaharh@redhat.com>> > > wrote: > > > > > > > On 29.10.14 17:35, Branimir Pejakovic wrote: > > > > > Hi list, > > > > > > > > > > I was wondering is there a way to add multiple files to a vm via > > > > cloud-init > > > > > using python SDK. I was able to add /etc/resolv.conf
and
> > additionally I > > > > > would like to add config files for NICs (ifcfg-ethX) with appropriate > > > > > values (ip,gw,netmask). I used an example given here: > > > > > http://www.ovirt.org/Features/Cloud-Init_Integration
. But
> > > > unfortunately I > > > > > cannot do the same thing If I want to write multiple files to a vm in > > > > > params.Action class. > > > > > > > > > > Thank you in advance! > > > > you can use the custom script text box in oVirts cloud-init section, > > > > there you can add any cloud-init section - adding files examples can be > > > > found > > > > here: > > > > > > > > > >
http://cloudinit.readthedocs.org/en/latest/topics/examples.html#writing-out-...
> > > > > > > > Shahar Havivi. > > > > > > > > > > > Hi Shahar, > > > > > > Thank you for the reply. > > > > > > To be honest I knew for those scripts but I want to do it in automate > > > fashion just like in that example that I put in my original message. I > > have > > > tried to specify in params.Files class multiple files: > > > > > > vm_file1 = params.Files(file=[params.File(name = 'file1', content = > > > file1_content, type_= 'PLAINTEXT')]) > > > vm_file2 = params.Files(file=[params.File(name = 'file2', content = > > > file2_content, type_= 'PLAINTEXT')]) > > > > > > and then give them as arguments to params.CloudInit _init_ constructor > > > (files=...) just like in that example above but it seems that I am doing > > > something wrong because it does not write multiple files - it writes only > > > when you specify one file all right. The exception is "Error: 'list' > > object > > > has no attribute 'export'" (I tried to specify those files as a list - > > > files=[vm_file1,vm_file2]). > > > > > > Thanks for any help. > > The custom script is currently the only option to add files via Cloud-Init > > > > Thanks, > > Shahar Havivi. > > > > > Hi Shahar, > > Granted. But the example in python > http://www.ovirt.org/Features/Cloud-Init_Integration uses custom script :) > I just want to know how to do the same thing in case when I want to write > more than one file to a VM - and yes - all those multiple files that I > want to write are specified via custom scripts. > > From the link - (The "Python SDK" paragraph: scontent object holds the > custom script): > > scontent = "write_files:\n- content: |\n search > example.com <http://example.com>\n nameserver 10.10.10.1\n nameserver > 10.10.10.2\n path: /etc/resolv.conf" > > For example (and just for example), I want to write to /etc/issue and > /etc/hosts not only /etc/resolv.conf. In essence, when vm goes to run-once > mode I want to write more than one file to a vm via Python
(using
> CloudInit) in automated fashion (and not touching oVirt GUI at all). You don't need to use the GUI, the sdks initialization have custom_script as string which is equivalent to the text box that you see in the GUI, and you can put the same content there (ie multiple files). Is that sufficient enough?
Hi Shahar,
Thanks! I will try this one. I was not aware of this feature. Although I can see that it was mentioned on the list (my bad).
Thank you for your effort! I really do appreciate it!
Hi,
Please if somebody can help me because I am pretty stuck. As I said in previous posts I used this Python example http://www.ovirt.org/Features/Cloud-Init_Integration to set root password, hostname and resolv.conf. It worked without any problems for 3.4 oVirt version and equivalent Python SDK (ovirt-engine-sdk-python-3.4.x.noarch).
Then, I have tried to write through yuml scripts more conf files than just resolv.conf to configure guest. I also saw this post on the list: http://lists.ovirt.org/pipermail/users/2014-October/028539.html. So based on that, I decided to upgraded oVirt and SDK (ovirt-engine-sdk-python-3.5.0.7-1.el6.noarch) to 3.5 version. The upgrade itself passed without any problem.
From that point forward I tried to use custom_script parameter (as suggested by Shahar) inside Initialization class and CloudInit class without any luck.
Can somebody please provide a simple Python code to submit yaml script to cloud-init?
Also after the upgrade the example script I mentioned above can only change hostname. It does not write resolv.conf anymore nor it sets root password. I don't know if something is changed inside methods? For example, customization of virtual machine (memory,cpu,high availability, pinning to a certain host etc works without any problems).
Thank you!
Best regards,
Branimir
The "custom_script" element doesn't work in combination with cloud-init and run once. To make it work you have to use cloud-init and a file element containing your custom script. Here you have an example:
#!/usr/bin/python
import base64 import re
from ovirtsdk.api import API from ovirtsdk.xml import params
# A simple function to encode using base64 and now new lines: def encode(s): return re.sub("\s+", "", base64.encodestring(s))
# Connect to the server: api = API( url="https://engine35.example.com/ovirt-engine/api", username="admin@internal", password="redhat123", insecure=True, debug=True )
# Find the virtual machine: myvm = api.vms.get(name="myvm")
# Prepare the cloud-init custom script to write files: myscript = """\ write_files: """
# Append one file: myscript += """\ - encoding: b64 content: %s owner: root:root path: /etc/firstfile.txt permissions: '0644' """ % encode("The content of the first file")
# Append another file: myscript += """\ - encoding: b64 content: %s owner: root:root path: /etc/secondfile.txt permissions: '0644' """ % encode("The content of the second file")
# Prepare the action to trigger initialization using cloud-init: action = params.Action( vm=params.VM( initialization=params.Initialization( cloud_init=params.CloudInit( files=params.Files( file=[ params.File( name="myscript", type_="plaintext", content=myscript ) ] ) ) ) ) )
# Start the virtual machine: myvm.start(action)
# Disconnect from the server: api.disconnect()
Regarding the problem with the root password we have a bug in 3.5 that makes this fail. See here:
https://bugzilla.redhat.com/1156155
The problem is that we are not passing the user name to cloud-init, and as a result it is changing the default cloud-init user password, not the root pssword. To workaround the issue you can edit the "/etc/cloud/cloud.cfg" file of the VM and change the default user name:
system_info: distro: ... default_user: name: root <-- Change this from "fedora" or "cloud-init" to root
-- Dirección Comercial: C/Jose Bardasano Baos, 9, Edif. Gorbea 3, planta 3ºD, 28016 Madrid, Spain Inscrita en el Reg. Mercantil de Madrid – C.I.F. B82657941 - Red Hat S.L.
Hi Juan,
Sorry for the delay. Thank you very much for this. It works perfectly.
Best regards,
Branimir
Hi, I just want to ask one more thing - is it possible to rename virtual disk from template_disk1 to vm1_disk1. I am asking this because I create vms based on the template and every machine I create has the same disk template name. Of course, I have searched through list archives and found this: http://lists.ovirt.org/pipermail/users/2014-June/024993.html https://bugzilla.redhat.com/show_bug.cgi?id=1105887 According to bugzilla this feature is targeted for 3.6 release. Is there any workaround maybe for this in 3.5 in Python SDK? Thank you! Best regards, Branimir
On 11/06/2014 11:06 AM, Branimir Pejakovic wrote:
On Mon, Nov 3, 2014 at 8:52 PM, Branimir Pejakovic <branimirp@gmail.com <mailto:branimirp@gmail.com>> wrote:
On Fri, Oct 31, 2014 at 11:00 PM, Juan Hernandez <jhernand@redhat.com <mailto:jhernand@redhat.com>> wrote:
On 10/31/2014 06:47 PM, Branimir Pejakovic wrote: > > > > On Thu, Oct 30, 2014 at 12:52 PM, Branimir Pejakovic > <branimirp@gmail.com <mailto:branimirp@gmail.com> <mailto:branimirp@gmail.com <mailto:branimirp@gmail.com>>> wrote: > > > > On Thu, Oct 30, 2014 at 12:39 PM, Shahar Havivi <shaharh@redhat.com <mailto:shaharh@redhat.com> > <mailto:shaharh@redhat.com <mailto:shaharh@redhat.com>>> wrote: > > On 30.10.14 12:30, Branimir Pejakovic wrote: > > On Thu, Oct 30, 2014 at 12:02 PM, Shahar Havivi > <shaharh@redhat.com <mailto:shaharh@redhat.com> <mailto:shaharh@redhat.com <mailto:shaharh@redhat.com>>> wrote: > > > > > On 30.10.14 10:06, Branimir Pejakovic wrote: > > > > On Thu, Oct 30, 2014 at 7:22 AM, Shahar Havivi > <shaharh@redhat.com <mailto:shaharh@redhat.com> <mailto:shaharh@redhat.com <mailto:shaharh@redhat.com>>> > > > wrote: > > > > > > > > > On 29.10.14 17:35, Branimir Pejakovic wrote: > > > > > > Hi list, > > > > > > > > > > > > I was wondering is there a way to add multiple files > to a vm via > > > > > cloud-init > > > > > > using python SDK. I was able to add /etc/resolv.conf and > > > additionally I > > > > > > would like to add config files for NICs (ifcfg-ethX) > with appropriate > > > > > > values (ip,gw,netmask). I used an example given here: > > > > > > http://www.ovirt.org/Features/Cloud-Init_Integration . But > > > > > unfortunately I > > > > > > cannot do the same thing If I want to write multiple > files to a vm in > > > > > > params.Action class. > > > > > > > > > > > > Thank you in advance! > > > > > you can use the custom script text box in oVirts > cloud-init section, > > > > > there you can add any cloud-init section - adding files > examples can be > > > > > found > > > > > here: > > > > > > > > > > > > > > http://cloudinit.readthedocs.org/en/latest/topics/examples.html#writing-out-... > > > > > > > > > > Shahar Havivi. > > > > > > > > > > > > > > Hi Shahar, > > > > > > > > Thank you for the reply. > > > > > > > > To be honest I knew for those scripts but I want to do it > in automate > > > > fashion just like in that example that I put in my > original message. I > > > have > > > > tried to specify in params.Files class multiple files: > > > > > > > > vm_file1 = params.Files(file=[params.File(name = 'file1', > content = > > > > file1_content, type_= 'PLAINTEXT')]) > > > > vm_file2 = params.Files(file=[params.File(name = 'file2', > content = > > > > file2_content, type_= 'PLAINTEXT')]) > > > > > > > > and then give them as arguments to params.CloudInit _init_ > constructor > > > > (files=...) just like in that example above but it seems > that I am doing > > > > something wrong because it does not write multiple files - > it writes only > > > > when you specify one file all right. The exception is > "Error: 'list' > > > object > > > > has no attribute 'export'" (I tried to specify those files > as a list - > > > > files=[vm_file1,vm_file2]). > > > > > > > > Thanks for any help. > > > The custom script is currently the only option to add files > via Cloud-Init > > > > > > Thanks, > > > Shahar Havivi. > > > > > > > > Hi Shahar, > > > > Granted. But the example in python > > http://www.ovirt.org/Features/Cloud-Init_Integration uses > custom script :) > > I just want to know how to do the same thing in case when I > want to write > > more than one file to a VM - and yes - all those multiple > files that I > > want to write are specified via custom scripts. > > > > From the link - (The "Python SDK" paragraph: scontent object > holds the > > custom script): > > > > scontent = "write_files:\n- content: |\n search > > example.com <http://example.com> <http://example.com>\n nameserver > 10.10.10.1\n nameserver > > 10.10.10.2\n path: /etc/resolv.conf" > > > > For example (and just for example), I want to write to > /etc/issue and > > /etc/hosts not only /etc/resolv.conf. In essence, when vm goes > to run-once > > mode I want to write more than one file to a vm via Python (using > > CloudInit) in automated fashion (and not touching oVirt GUI at > all). > You don't need to use the GUI, > the sdks initialization have custom_script as string which is > equivalent to > the text box that you see in the GUI, and you can put the same > content there > (ie multiple files). > Is that sufficient enough? > > > Hi Shahar, > > Thanks! I will try this one. I was not aware of this feature. > Although I can see that it was mentioned on the list (my bad). > > Thank you for your effort! I really do appreciate it! > > > > Hi, > > Please if somebody can help me because I am pretty stuck. As I said in > previous posts I used this Python example > http://www.ovirt.org/Features/Cloud-Init_Integration to set root > password, hostname and resolv.conf. It worked without any problems for > 3.4 oVirt version and equivalent Python SDK > (ovirt-engine-sdk-python-3.4.x.noarch). > > Then, I have tried to write through yuml scripts more conf files than > just resolv.conf to configure guest. I also saw this post on the list: > http://lists.ovirt.org/pipermail/users/2014-October/028539.html. So > based on that, I decided to upgraded oVirt and SDK > (ovirt-engine-sdk-python-3.5.0.7-1.el6.noarch) to 3.5 version. The > upgrade itself passed without any problem. > > From that point forward I tried to use custom_script parameter (as > suggested by Shahar) inside Initialization class and CloudInit class > without any luck. > > Can somebody please provide a simple Python code to submit yaml script > to cloud-init? > > Also after the upgrade the example script I mentioned above can only > change hostname. It does not write resolv.conf anymore nor it sets root > password. I don't know if something is changed inside methods? For > example, customization of virtual machine (memory,cpu,high availability, > pinning to a certain host etc works without any problems). > > Thank you! > > Best regards, > > Branimir >
The "custom_script" element doesn't work in combination with cloud-init and run once. To make it work you have to use cloud-init and a file element containing your custom script. Here you have an example:
#!/usr/bin/python
import base64 import re
from ovirtsdk.api import API from ovirtsdk.xml import params
# A simple function to encode using base64 and now new lines: def encode(s): return re.sub("\s+", "", base64.encodestring(s))
# Connect to the server: api = API( url="https://engine35.example.com/ovirt-engine/api", username="admin@internal", password="redhat123", insecure=True, debug=True )
# Find the virtual machine: myvm = api.vms.get(name="myvm")
# Prepare the cloud-init custom script to write files: myscript = """\ write_files: """
# Append one file: myscript += """\ - encoding: b64 content: %s owner: root:root path: /etc/firstfile.txt permissions: '0644' """ % encode("The content of the first file")
# Append another file: myscript += """\ - encoding: b64 content: %s owner: root:root path: /etc/secondfile.txt permissions: '0644' """ % encode("The content of the second file")
# Prepare the action to trigger initialization using cloud-init: action = params.Action( vm=params.VM( initialization=params.Initialization( cloud_init=params.CloudInit( files=params.Files( file=[ params.File( name="myscript", type_="plaintext", content=myscript ) ] ) ) ) ) )
# Start the virtual machine: myvm.start(action)
# Disconnect from the server: api.disconnect()
Regarding the problem with the root password we have a bug in 3.5 that makes this fail. See here:
https://bugzilla.redhat.com/1156155
The problem is that we are not passing the user name to cloud-init, and as a result it is changing the default cloud-init user password, not the root pssword. To workaround the issue you can edit the "/etc/cloud/cloud.cfg" file of the VM and change the default user name:
system_info: distro: ... default_user: name: root <-- Change this from "fedora" or "cloud-init" to root
-- Dirección Comercial: C/Jose Bardasano Baos, 9, Edif. Gorbea 3, planta 3ºD, 28016 Madrid, Spain Inscrita en el Reg. Mercantil de Madrid – C.I.F. B82657941 - Red Hat S.L.
Hi Juan,
Sorry for the delay. Thank you very much for this. It works perfectly.
Best regards,
Branimir
Hi,
I just want to ask one more thing - is it possible to rename virtual disk from template_disk1 to vm1_disk1. I am asking this because I create vms based on the template and every machine I create has the same disk template name.
Of course, I have searched through list archives and found this:
http://lists.ovirt.org/pipermail/users/2014-June/024993.html https://bugzilla.redhat.com/show_bug.cgi?id=1105887
According to bugzilla this feature is targeted for 3.6 release. Is there any workaround maybe for this in 3.5 in Python SDK?
Thank you!
Best regards,
Branimir
You can rename the disks after the virtual machine is created: vm = api.vms.get(name="myvm") index = 0 for disk in vm.disks.list(): disk.set_alias("myvm_disk_%d" % index) disk.update() index += 1 -- Dirección Comercial: C/Jose Bardasano Baos, 9, Edif. Gorbea 3, planta 3ºD, 28016 Madrid, Spain Inscrita en el Reg. Mercantil de Madrid – C.I.F. B82657941 - Red Hat S.L.
On Thu, Nov 6, 2014 at 10:21 AM, Juan Hernandez <jhernand@redhat.com> wrote:
On 11/06/2014 11:06 AM, Branimir Pejakovic wrote:
On Mon, Nov 3, 2014 at 8:52 PM, Branimir Pejakovic <branimirp@gmail.com <mailto:branimirp@gmail.com>> wrote:
On Fri, Oct 31, 2014 at 11:00 PM, Juan Hernandez <jhernand@redhat.com <mailto:jhernand@redhat.com>> wrote:
On 10/31/2014 06:47 PM, Branimir Pejakovic wrote: > > > > On Thu, Oct 30, 2014 at 12:52 PM, Branimir Pejakovic > <branimirp@gmail.com <mailto:branimirp@gmail.com> <mailto:branimirp@gmail.com <mailto:branimirp@gmail.com>>>
wrote:
> > > > On Thu, Oct 30, 2014 at 12:39 PM, Shahar Havivi <
shaharh@redhat.com <mailto:shaharh@redhat.com>
> <mailto:shaharh@redhat.com <mailto:shaharh@redhat.com>>>
wrote:
> > On 30.10.14 12:30, Branimir Pejakovic wrote: > > On Thu, Oct 30, 2014 at 12:02 PM, Shahar Havivi > <shaharh@redhat.com <mailto:shaharh@redhat.com> <mailto:shaharh@redhat.com <mailto:shaharh@redhat.com>>> wrote: > > > > > On 30.10.14 10:06, Branimir Pejakovic wrote: > > > > On Thu, Oct 30, 2014 at 7:22 AM, Shahar Havivi > <shaharh@redhat.com <mailto:shaharh@redhat.com> <mailto:shaharh@redhat.com <mailto:shaharh@redhat.com>>> > > > wrote: > > > > > > > > > On 29.10.14 17:35, Branimir Pejakovic wrote: > > > > > > Hi list, > > > > > > > > > > > > I was wondering is there a way to add multiple files > to a vm via > > > > > cloud-init > > > > > > using python SDK. I was able to add /etc/resolv.conf and > > > additionally I > > > > > > would like to add config files for NICs (ifcfg-ethX) > with appropriate > > > > > > values (ip,gw,netmask). I used an example given here: > > > > > > http://www.ovirt.org/Features/Cloud-Init_Integration . But > > > > > unfortunately I > > > > > > cannot do the same thing If I want to write multiple > files to a vm in > > > > > > params.Action class. > > > > > > > > > > > > Thank you in advance! > > > > > you can use the custom script text box in
oVirts
> cloud-init section, > > > > > there you can add any cloud-init section - adding files > examples can be > > > > > found > > > > > here: > > > > > > > > > > > > > >
http://cloudinit.readthedocs.org/en/latest/topics/examples.html#writing-out-...
> > > > > > > > > > Shahar Havivi. > > > > > > > > > > > > > > Hi Shahar, > > > > > > > > Thank you for the reply. > > > > > > > > To be honest I knew for those scripts but I want to do it > in automate > > > > fashion just like in that example that I put in
my
> original message. I > > > have > > > > tried to specify in params.Files class multiple files: > > > > > > > > vm_file1 = params.Files(file=[params.File(name = 'file1', > content = > > > > file1_content, type_= 'PLAINTEXT')]) > > > > vm_file2 = params.Files(file=[params.File(name = 'file2', > content = > > > > file2_content, type_= 'PLAINTEXT')]) > > > > > > > > and then give them as arguments to params.CloudInit _init_ > constructor > > > > (files=...) just like in that example above but it seems > that I am doing > > > > something wrong because it does not write multiple files - > it writes only > > > > when you specify one file all right. The exception is > "Error: 'list' > > > object > > > > has no attribute 'export'" (I tried to specify those files > as a list - > > > > files=[vm_file1,vm_file2]). > > > > > > > > Thanks for any help. > > > The custom script is currently the only option to add files > via Cloud-Init > > > > > > Thanks, > > > Shahar Havivi. > > > > > > > > Hi Shahar, > > > > Granted. But the example in python > > http://www.ovirt.org/Features/Cloud-Init_Integration uses > custom script :) > > I just want to know how to do the same thing in case when I > want to write > > more than one file to a VM - and yes - all those multiple > files that I > > want to write are specified via custom scripts. > > > > From the link - (The "Python SDK" paragraph: scontent object > holds the > > custom script): > > > > scontent = "write_files:\n- content: |\n search > > example.com <http://example.com> <http://example.com>\n nameserver > 10.10.10.1\n nameserver > > 10.10.10.2\n path: /etc/resolv.conf" > > > > For example (and just for example), I want to write
to
> /etc/issue and > > /etc/hosts not only /etc/resolv.conf. In essence, when vm goes > to run-once > > mode I want to write more than one file to a vm via Python (using > > CloudInit) in automated fashion (and not touching oVirt GUI at > all). > You don't need to use the GUI, > the sdks initialization have custom_script as string which is > equivalent to > the text box that you see in the GUI, and you can put the same > content there > (ie multiple files). > Is that sufficient enough? > > > Hi Shahar, > > Thanks! I will try this one. I was not aware of this
feature.
> Although I can see that it was mentioned on the list (my
bad).
> > Thank you for your effort! I really do appreciate it! > > > > Hi, > > Please if somebody can help me because I am pretty stuck. As I said in > previous posts I used this Python example > http://www.ovirt.org/Features/Cloud-Init_Integration to set
root
> password, hostname and resolv.conf. It worked without any problems for > 3.4 oVirt version and equivalent Python SDK > (ovirt-engine-sdk-python-3.4.x.noarch). > > Then, I have tried to write through yuml scripts more conf files than > just resolv.conf to configure guest. I also saw this post on the list: > http://lists.ovirt.org/pipermail/users/2014-October/028539.html.
So
> based on that, I decided to upgraded oVirt and SDK > (ovirt-engine-sdk-python-3.5.0.7-1.el6.noarch) to 3.5 version.
The
> upgrade itself passed without any problem. > > From that point forward I tried to use custom_script parameter
(as
> suggested by Shahar) inside Initialization class and CloudInit class > without any luck. > > Can somebody please provide a simple Python code to submit yaml script > to cloud-init? > > Also after the upgrade the example script I mentioned above can only > change hostname. It does not write resolv.conf anymore nor it sets root > password. I don't know if something is changed inside methods?
For
> example, customization of virtual machine (memory,cpu,high availability, > pinning to a certain host etc works without any problems). > > Thank you! > > Best regards, > > Branimir >
The "custom_script" element doesn't work in combination with cloud-init and run once. To make it work you have to use cloud-init and a
file
element containing your custom script. Here you have an example:
#!/usr/bin/python
import base64 import re
from ovirtsdk.api import API from ovirtsdk.xml import params
# A simple function to encode using base64 and now new lines: def encode(s): return re.sub("\s+", "", base64.encodestring(s))
# Connect to the server: api = API( url="https://engine35.example.com/ovirt-engine/api", username="admin@internal", password="redhat123", insecure=True, debug=True )
# Find the virtual machine: myvm = api.vms.get(name="myvm")
# Prepare the cloud-init custom script to write files: myscript = """\ write_files: """
# Append one file: myscript += """\ - encoding: b64 content: %s owner: root:root path: /etc/firstfile.txt permissions: '0644' """ % encode("The content of the first file")
# Append another file: myscript += """\ - encoding: b64 content: %s owner: root:root path: /etc/secondfile.txt permissions: '0644' """ % encode("The content of the second file")
# Prepare the action to trigger initialization using cloud-init: action = params.Action( vm=params.VM( initialization=params.Initialization( cloud_init=params.CloudInit( files=params.Files( file=[ params.File( name="myscript", type_="plaintext", content=myscript ) ] ) ) ) ) )
# Start the virtual machine: myvm.start(action)
# Disconnect from the server: api.disconnect()
Regarding the problem with the root password we have a bug in 3.5 that makes this fail. See here:
https://bugzilla.redhat.com/1156155
The problem is that we are not passing the user name to cloud-init, and as a result it is changing the default cloud-init user password, not the root pssword. To workaround the issue you can edit the "/etc/cloud/cloud.cfg" file of the VM and change the default user name:
system_info: distro: ... default_user: name: root <-- Change this from "fedora" or "cloud-init" to root
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Hi Juan,
Sorry for the delay. Thank you very much for this. It works
perfectly.
Best regards,
Branimir
Hi,
I just want to ask one more thing - is it possible to rename virtual disk from template_disk1 to vm1_disk1. I am asking this because I create vms based on the template and every machine I create has the same disk template name.
Of course, I have searched through list archives and found this:
http://lists.ovirt.org/pipermail/users/2014-June/024993.html https://bugzilla.redhat.com/show_bug.cgi?id=1105887
According to bugzilla this feature is targeted for 3.6 release. Is there any workaround maybe for this in 3.5 in Python SDK?
Thank you!
Best regards,
Branimir
You can rename the disks after the virtual machine is created:
vm = api.vms.get(name="myvm") index = 0 for disk in vm.disks.list(): disk.set_alias("myvm_disk_%d" % index) disk.update() index += 1
Hi Juan, Thanks a lot! Works perfectly! Branimir
participants (3)
-
Branimir Pejakovic -
Juan Hernandez -
Shahar Havivi