** Changed in: cloud-init (Ubuntu Xenial) Importance: Undecided => High
** Changed in: cloud-init (Ubuntu Xenial) Assignee: (unassigned) => Scott Moser (smoser) ** Also affects: cloud-init Importance: Undecided Status: New -- You received this bug notification because you are a member of Yahoo! Engineering Team, which is subscribed to cloud-init. https://bugs.launchpad.net/bugs/1510345 Title: [SRU] Cloud Images do not bring up networking w/ certain virtual NICs due to device naming rules Status in cloud-init: New Status in Ubuntu on EC2: Fix Released Status in cloud-init package in Ubuntu: Triaged Status in livecd-rootfs package in Ubuntu: Fix Released Status in livecd-rootfs source package in Wily: Fix Released Status in cloud-init source package in Xenial: Triaged Status in livecd-rootfs source package in Xenial: Fix Released Bug description: SRU Justification [IMPACT] Cloud images produced by livecd-rootfs are not accessable when presented with certain NICS such as ixgbevf used on HVM instances for AWS. [CAUSE] Changes in default device naming in 15.10 causes some devices to be named at boot time and are not predicatable, i.e. instead of "eth0" being the first NIC, "ens3" might be used. [FIX] Boot instances with "net.ifnames=0". This change reverts to the old device naming conventions. As a fix, this is the most appropriate since the cloud images configure the first NIC for DHCP. [TEST CASE1]: - Build image from -proposed - Boot image in KVM, i.e: $ qemu-system-x86_64 \ -smp 2 -m 1024 -machine accel=kvm \ -drive file=build.img,if=virtio,bus=0,cache=unsafe,unit=0,snapshot=on \ -net nic,model=rtl8139 - Confirm that image has "eth0" [TEST CASE2]: - Build image from -proposed - Publish image to AWS as HVM w/ SRIOV enabled - Confirm that instance boots and is accessable via SSH [ORIGINAL REPORT] I've made several attempts to launch a c4.xlarge and c4.8xlarge instances using Ubuntu 15.10 Wily but am unable to ping the instance after it has started running. The console shows that the instance reachability check failed. I am able to successfully launch c4.xlarge instances using Ubuntu 14.04 and t2.large instances using Ubuntu 15.10. I've tried with both of these instance AMIs: ubuntu/images/hvm-ssd/ubuntu-wily-15.10-amd64-server-20151021 - ami-225ebd11 ubuntu/images-testing/hvm-ssd/ubuntu-wily-daily-amd64-server-20151026 - ami-ea20cdd9 Might there be a problem with the Ubuntu Kernel in 15.10 for the c4 instances? Looking at the system log it seems that the network never comes up: [ 140.699509] cloud-init[1469]: 2015-10-26 20:45:49,887 - url_helper.py[WARNING]: Calling 'http://169.254.169.254/2009-04-04 /meta-data/instance-id' failed [0/120s]: request error [('Connection aborted.', OSError(101, 'Network is unreachable'))] Thread at AWS forums: https://forums.aws.amazon.com/thread.jspa?threadID=218656 To manage notifications about this bug go to: https://bugs.launchpad.net/cloud-init/+bug/1510345/+subscriptions -- Mailing list: https://launchpad.net/~yahoo-eng-team Post to : yahoo-eng-team@lists.launchpad.net Unsubscribe : https://launchpad.net/~yahoo-eng-team More help : https://help.launchpad.net/ListHelp