I would have hoped the documentation (http://docs.openstack.org/user-guide/cli_config_drive.html#enable-and-access-the-configuration-drive) was clear on this. It shows how one can configure IP addresses by injecting /etc/network/interfaces file for a DHCP disabled network, but does not seem to mention how one will know what to write in that file.
Perhaps a note could be added on the doc page (?) Thanks, Kaustubh From: Brent Troge [mailto:brenttroge2...@gmail.com] Sent: Thursday, July 21, 2016 4:17 PM To: Kaustubh Kelkar <kaustubh.kel...@casa-systems.com> Cc: openstack@lists.openstack.org Subject: Re: [Openstack] [OpenStack][Nova] Configuring IP address on a DHCP disabled network yeah.. my notes do the same as what you suggest. 1. create your neutron ports 2. pass port attributes to user-data script or use cloud-config as per the below. https://cloudinit.readthedocs.io/en/latest/topics/examples.html#writing-out-arbitrary-files On Thu, Jul 21, 2016 at 2:18 PM, Kaustubh Kelkar <kaustubh.kel...@casa-systems.com<mailto:kaustubh.kel...@casa-systems.com>> wrote: Thanks for the pointer. However, using those outputs to inject user data seems to create a circular dependency: myserver: type: OS::Nova::Server properties: name: test-vm image: ubuntu-16.04 flavor: m1.small networks: - network: { get_param: [ mgmt, id ] } - network: { get_param: no_dhcp_net } user_data_format: RAW user_data: str_replace: template: | #!/bin/bash echo -e "\n" >> /etc/network/interfaces echo "auto ens4" >> /etc/network/interfaces echo "iface ens4 inet static" >> /etc/network/interfaces echo "address $IPADDR" >> /etc/network/interfaces echo "netmask 255.255.255.0" >> /etc/network/interfaces ifdown ens4 2>/dev/null ifup ens4 2>/dev/null params: $IPADDR: { get_attr: [ myserver, addresses, no-dhcp-net, 0, addr ] } For now, I am going back to creating port and pass in that information as user data. -Kaustubh From: Brent Troge [mailto:brenttroge2...@gmail.com<mailto:brenttroge2...@gmail.com>] Sent: Wednesday, July 20, 2016 7:27 PM To: Kaustubh Kelkar <kaustubh.kel...@casa-systems.com<mailto:kaustubh.kel...@casa-systems.com>> Cc: openstack@lists.openstack.org<mailto:openstack@lists.openstack.org> Subject: Re: [Openstack] [OpenStack][Nova] Configuring IP address on a DHCP disabled network Isn't that exposed through outputs ? And then use the output combined with configdrive cloudinit to configure your NICS outputs: instance_ip: description: The IP address of the deployed instance value: { get_attr: [my_instance, first_address] } On Jul 20, 2016 5:58 PM, "Kaustubh Kelkar" <kaustubh.kel...@casa-systems.com<mailto:kaustubh.kel...@casa-systems.com>> wrote: My use case involves booting up an instance attached to two networks – one having Neutron DHCP service running and one without. Looking within the documentation [1], I was hoping to use configuration drive to provide IP information for the second interface. But, if I understand correctly, one could theoretically pass any IP information through it; which may or may not match the IP that is assigned to the Neutron port. I wonder if there is any way the actual IP assigned to the Neutron port is exposed in some way within the VM. One crude workaround I can think of is to create a port beforehand with a fixed IP, and use this information to configure static networking within the VM. However this might not be manageable if a user launches numerous VMs since he/she will have to ensure that IPs do not overlap. [2] looks promising, but I am not clear how I can just specify the second interface only. [1] http://docs.openstack.org/user-guide/cli_config_drive.html [2] http://blog.oddbit.com/2015/06/26/openstack-networking-without-dhcp/ Thanks, Kaustubh _______________________________________________ Mailing list: http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack Post to : openstack@lists.openstack.org<mailto:openstack@lists.openstack.org> Unsubscribe : http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack
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