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From Jayapal Reddy Uradi <jayapalreddy.ur...@citrix.com>
Subject Re: The IPaddr parameter for vmcreate API
Date Fri, 26 Apr 2013 11:17:43 GMT
Hi Jiri,

If you pass ip addr to API to create VM.
  - If IP addr is not in vm network cidd, or ip is not available in that network  VM creation
will fail.
  - If ip is not available then CS will not pick another ip.

If your case is there any other dhcp server in guest network serving ip to the VM ?  

Thanks,
Jayapal

On 26-Apr-2013, at 3:36 PM, Jerry Jiang <jerry.jiang@tyxtech.com> wrote:

> Hello Pranav,
> 
> Sorry I also want to ask another case before I tap the send button.
> 
> If a certain IP is assigned by user and give the VMcreate API as a
> parameter,
> Still, vrouter will bind the ip and vm's mac address, right?
> If so, is it possible router found the specified IP is bound out and stayed
> in cache, and it pick up another one to create a vm?
> 
> Jerry
> 
> -----邮件原件-----
> 发件人: Jerry Jiang [mailto:jerry.jiang@tyxtech.com] 
> 发送时间: 2013年4月26日 星期五 17:55
> 收件人: dev@cloudstack.apache.org; users@cloudstack.apache.org
> 主题: 答复: The IPaddr parameter for vmcreate API
> 
> Hello Pranav,
> 
> I would say - in this case, though vrouter(dhcp server) binds mac and ip for
> vm instance, it doesn't update vm Operating system from inside. What happens
> if I setup vm's OS as static IP address mode?
> 
> Thanks
> Jerry
> 
> -----邮件原件-----
> 发件人: Pranav Saxena [mailto:pranav.saxena@citrix.com]
> 发送时间: 2013年4月26日 星期五 16:37
> 收件人: dev@cloudstack.apache.org; users@cloudstack.apache.org
> 主题: RE: The IPaddr parameter for vmcreate API
> 
> I think you are absolutely right ..that's how IP allocation works!  Any
> issues  ?
> 
> Thanks,
> Pranav
> 
> -----Original Message-----
> From: Jerry Jiang [mailto:jerry.jiang@tyxtech.com]
> Sent: Friday, April 26, 2013 1:45 PM
> To: users@cloudstack.apache.org
> Cc: dev@cloudstack.apache.org
> Subject: 答复: The IPaddr parameter for vmcreate API
> 
> Hello Pranav,
> 
> Thanks for your response.
> 
> My understanding for how CS allocating IP addresses to vm instance is,
> Vrouter works as a dhcp server, and the template for vm is setup to dhcp
> mode When cs tries to create a vm, it picks up an available IP from the IP
> Pool and assign it to targeted vm instance. Am I right?
> 
> Jerry
> -----邮件原件-----
> 发件人: Pranav Saxena [mailto:pranav.saxena@citrix.com]
> 发送时间: 2013年4月22日 星期一 18:57
> 收件人: users@cloudstack.apache.org
> 抄送: dev@cloudstack.apache.org
> 主题: RE: The IPaddr parameter for vmcreate API
> 
> Hey Jerry,
> 
> Custom ip allocation failure leads to vm deploy failure. Happens in
> following cases:
> ============================================================================
> ========
> * If ipAddress doesn't exist in the network.
> * If requested ip address exists in the network, but already allocated.
> * If network model doesn't support custom ip allocation (see list of cases
> below), the runtime exception "Does not support custom ip allocation at this
> time"  is being thrown.
> 
> 
> Custom ip allocation is SUPORTED FOR - 
> 
> * Guest Virtual Network
> * Direct network in Advanced zone
> 
> 
> NOT SUPPORTED - 
> 
> * ExternalFirewall setup case. The reason for not supporting: the original
> ip can be changed automatically by ExternalGuestNetworkGuru after the vm is
> stopped/started.
> * Basic zone - as we have 1 Global Network, but separate ip ranges per each
> Pod, so the decision about which ip address to take happens after Allocators
> figure out the destination Pod.
> If you specify the ip address of Pod2, and allocators will pick up Pod1
> - the vm creation will fail.
> 
> So you can figure out which case might explain your problem to the best
> extent possible.
> 
> Thanks,
> Pranav
> -----Original Message-----
> From: Jerry Jiang [mailto:jerry.jiang@tyxtech.com]
> Sent: Monday, April 22, 2013 3:40 PM
> To: users@cloudstack.apache.org
> Subject: 答复: The IPaddr parameter for vmcreate API
> 
> Anyone has reponsed to the issue, thanks in advance.
> 
> 
> 
> jerry
> 
> 
> 
> 发件人: Jerry Jiang [mailto:jerry.jiang@tyxtech.com]
> 发送时间: 2013年4月18日 星期四 10:29
> 收件人: 'users@cloudstack.apache.org'
> 主题: The IPaddr parameter for vmcreate API
> 
> 
> 
> Hello all,
> 
> 
> 
> I am using cloudstack API to create a VM instance. The IP address as one of
> parameters is provided to API
> 
> However, I found it didn’t work well, The IP address of creating VM is not
> what I provided for API.
> 
> Eg, using IP1 as the parameter, the vm operational IP addr is IP2
> 
> 
> 
> Why does this issue happen?
> 
> 
> 
> Thanks
> 
> Jerry
> 
> 
> 

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