If it is not going to nova-compute, it must be thrown out directly at nova-api due to any of the following reasons:
1. No valid host to launch the instance: Though you can see free memory on the compute node, but it does check for few more things: disk space and CPU. Please note that the disk space being looked at is the theoretical value. 2. The instance flavor type is incorrect. The image uploaded might have not been specified the right correct min. disk and min. memory needs. So, if you use tiny flavor and the image really requires more than 2 GB of root, it is going to fail. You may like to run the following command: nova hypervisor-stats Regards~hrushi From: Vikash Kumar [mailto:vikash.ku...@oneconvergence.com] Sent: Monday, July 07, 2014 9:13 PM To: Openstack Milis; openstack-dev Subject: [Openstack] [Nova] Launch of VM failed after certain count openstack Havana Hi all, I am facing issue with VM launch. I am using openstack Havana. I have one compute node with following specification: root@compute-node:~# lscpu Architecture: x86_64 CPU op-mode(s): 32-bit, 64-bit Byte Order: Little Endian CPU(s): 8 On-line CPU(s) list: 0-7 Thread(s) per core: 1 Core(s) per socket: 4 Socket(s): 2 NUMA node(s): 1 Vendor ID: GenuineIntel CPU family: 6 Model: 15 Stepping: 7 CPU MHz: 1995.104 BogoMIPS: 3990.02 Virtualization: VT-x L1d cache: 32K L1i cache: 32K L2 cache: 4096K NUMA node0 CPU(s): 0-7 root@compute-node:~# free -h total used free shared buffers cached Mem: 15G 1.5G 14G 0B 174M 531M -/+ buffers/cache: 870M 14G Swap: 15G 0B 15G But I am not able to launch more than 12-14 VM. VM launch fails. Even I don't see ERROR logs in any of nova logs on both openstack controller and compute node. Don't see any request coming to compute node also. I just tailed nova compute logs on compute node. As soon as, I clean the previous VMs , everything works fine. I have never observed this with Grizzly. Regards, Vikash
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