Just a guess, but did you check the host file on the virtual router has the 
correct host and IP in? This is set by edithosts.sh on the router and needs to 
be updated correctly with the IP / hostname

Oliver Leach


-----Original Message-----
From: WXR [mailto:474745...@qq.com] 
Sent: Thursday, June 27, 2013 10:30 AM
To: users
Subject: Re: How can I allocate a specific IP when I create an instance.

I just modify the "nics" table and change the "ipv4_address" value.And then I 
restart the vrouter vm.
After the vrouter restarting,the instance vm can get the new ip but the ip can 
not be accessed.




------------------ Original ------------------
From:  "Dave Dunaway"<dave.duna...@gmail.com>;
Date:  Thu, Jun 27, 2013 05:25 PM
To:  "users"<users@cloudstack.apache.org>; 

Subject:  Re: How can I allocate a specific IP when I create an instance.



Show us what you changed... without that we can't help you. And make sure to 
indicate what version of CloudPlatform you use as apparently some older 
versions may not work with the ip address change in the DB as Geoff indicated.


On Thu, Jun 27, 2013 at 12:42 AM, WXR <474745...@qq.com> wrote:

> If I modify the ip of the vm in nic table and restart the vrouter 
> system vm, the instance vm can get the new ip which I specify.
> But this ip can't be used normally.Them vm can not access the gateway 
> ip even if I'v stopped the iptables of its host node machine.
>
>
> ------------------ Original ------------------
> From:  "Dave Dunaway"<dave.duna...@gmail.com>;
> Date:  Wed, Jun 26, 2013 11:51 PM
> To:  "users"<users@cloudstack.apache.org>;
>
> Subject:  Re: How can I allocate a specific IP when I create an instance.
>
>
>
> There should be a way to have the ability to reserve an IP and still 
> have DHCP assign the IP by mac reservation. There's no technical 
> reason this wouldn't work and likely a feature a lot of people would 
> love to see. The only hold back is the UI not allowing you to do so.
>
> Ultimately, you can go to the DB and change the VM's IP in the nics 
> table to what you want (reboot the VM and the IP change will occur). 
> Which is not the preferred way to do so, but ultimately that 
> functionality from the UI would be ideal.
>
> Even going as far as intergrating IPAM functionality into the product 
> would be ideal.
>
>
> On Wed, Jun 26, 2013 at 11:44 AM, Geoff Higginbottom < 
> geoff.higginbot...@shapeblue.com> wrote:
>
> > Simple answer - you can't.
> >
> > In an advanced zone, you can specify the IP address when you create 
> > a new VM using the API, however in a basic zone, because the IP will 
> > depend on which POD your VM ends up in, and as a user you cannot 
> > influence this, there is no way to specific the IP, even if you are a root 
> > admin.
> >
> > The reason it still fails when you manually change the IP is that 
> > the security groups feature is expecting the VM to have the IP 
> > CloudStack allocated it via DHCP.
> >
> > Regards
> >
> > Geoff Higginbottom
> > CTO / Cloud Architect
> >
> >
> > D: +44(0)20 3603 0542<tel:+442036030542> | S: +44(0)20 3603 0540<tel:
> > +442036030540> | M: +44(0)7968161581<tel:+447968161581>
> >
> > geoff.higginbot...@shapeblue.com<mailto:geoff.higginbottom@shapeblue
> > .com
> >
> > | www.shapeblue.com
> >
> > ShapeBlue Ltd, 53 Chandos Place, Covent Garden, London, WC2N 4HS
> >
> >
> >
> > On 26 Jun 2013, at 05:02, "WXR" <474745...@qq.com<http://qq.com>> wrote:
> >
> > cloudstack version: 4.1
> > network type: basic network
> >
> > When I create a new instance,the vm will get a random IP from the 
> > DHCP server on vrouter.
> >
> > If I want to:
> > 1.allocate a specific ip to the vm.
> > 2.allocate multiple ips to the vm.
> > 3.change the vm ip from one to another.
> >
> > How can I achieve it? I try to bind the ip to the vm nic manually 
> > but the ip can not be accessed.
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