Didn't use Cobbler but using regular IPXE I updated a guide for UCS and CoreOS. I tested on UCS M2, M3, & M4. Seemed to work great. https://ciscoucs.github.io/os/2017/04/06/coreos
On Wednesday, April 20, 2016 at 1:01:53 AM UTC-7, Philip Ye wrote: > > Thank you Michael, removing these two options for root, i.e. rootflags=loop > root=/coreos_stable_835.iso, CoreOS can successfully PXE now. > > On Wednesday, April 20, 2016 at 12:52:34 PM UTC+8, Philip Ye wrote: >> >> Thanks Michael, let me give it a try. >> >> On Tuesday, April 19, 2016 at 11:56:47 PM UTC+8, Brandon Philips wrote: >>> >>> There is a documentation problem that we need to fix: >>> https://github.com/coreos/docs/issues/793 >>> >>> You shouldn't be specifying the "iso" stuff in root= for example. >>> >>> On Mon, Apr 18, 2016 at 2:50 AM 叶朝敏 <[email protected]> wrote: >>> >>>> I googled a lot but were not lucky enough to find similar problems. >>>> Anyone ran into same issue? Or if you have any clue to troubleshoot this, >>>> I'd appreciate your kind help. Thanks in advance! >>>> >>>> 在 2016年4月18日星期一 UTC+8下午5:48:35，叶朝敏写道： >>>> >>>>> Hi there, >>>>> >>>>> I'm now trying CoreOS with PXE (via Cobbler and PXELinux actually) on >>>>> a Cisco UCS C200 M2, however, CoreOS seems to hang at PXE booting, as can >>>>> be seen from the screen capture below: (I don't know how to capture the >>>>> text from the UCS's KVM window, if you know please tell me, sorry for >>>>> this >>>>> :(). >>>>> >>>>> >>>>> <https://lh3.googleusercontent.com/-RfXekozGfZ0/VxSspMTCzkI/AAAAAAAADgs/sHTPMGFgqoslURMrGeYG1-SMy8o3vOslQCLcB/s1600/PXEHang.tiff> >>>>> >>>>> >>>>> This issue happens occasionally, sometimes it can boot successfully, >>>>> and the device is able to got the cloud-config from the URL I specified >>>>> on >>>>> the kernel line, some times it failed without any reason. Since it failed >>>>> to boot I cannot continue to get system boot log via journalctl or so. >>>>> >>>>> >>>>> Here's my PXELinux configuration for CoreOS: >>>>> >>>>> 在此输入代码... >>>>> >>>>> default linux >>>>> prompt 0 >>>>> timeout 1 >>>>> label linux >>>>> kernel /images/coreos-stable-835/vmlinuz >>>>> ipappend 2 >>>>> append initrd=/images/coreos-stable-835/cpio.gz rootflags=loop >>>>> root=/coreos_stable_835.iso coreos.autologin console=tty0 console=ttyS0 >>>>> rootfstype=tmpfs udev.event-timeout=60 cloud-config-url= >>>>> http://192.168.1.10/cloud-configs/cloud-config-e0:2f:6d:bc:08:bc.yml >>>>> >>>>> >>>>> >>>>> >>>>>
