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2014-06-30 10:37:39 -0600 commented answer Cannot change br-int and br-tun MTU to >1500

Sorry. Just read where you don;t want to reduce guest. Please disregard

2014-06-30 10:36:04 -0600 answered a question Cannot change br-int and br-tun MTU to >1500

You change guest MTU by configuring this in the /etc/neutron/dhcp_agent.ini: dnsmasq_config_file=/etc/neutron/dnsmasq-neutron.conf

Then create the dnsmasq-neutron.conf with this:

dhcp-option-force=26,1400

This forces an MTU of 1400

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2014-06-25 17:18:14 -0600 commented answer resize disk down

Great. Thank you soooo much for the help.

2014-06-25 17:06:07 -0600 commented answer resize disk down

I want to reduce the ram and vcpu's. Can I create a flavor to do that? I am not certain why my KVM setup will not allow. Nothing special about the setup.

2014-06-25 16:57:23 -0600 commented answer resize disk down

Not too telling.

    2014-06-25 17:20:28.067 27632 WARNING nova.compute.resource_tracker [-] [instance: e4798c6e-bf95-4b73-b013-0f351ecb3c36] Instance not resizing, skipping mig$
2014-06-25 17:20:57.158 27632 ERROR oslo.messaging.rpc.dispatcher [-] Exception during message handling: Resize error: Unable to resize disk down.
2014-06-25 17:20:57.158 27632 TRACE oslo.messaging.rpc.dispatcher Traceback (most recent call last):
2014-06-25 17:20:57.158 27632 TRACE oslo.messaging.rpc.dispatcher   File "/usr/lib/python2.7/dist-packages/oslo/messaging/rpc/dispatcher.py", line 133, in _$
2014-06-25 17:20:57.158 27632 TRACE oslo.messaging.rpc.dispatcher     incoming.message))
2014-06-25 17:20:57.158 27632 TRACE oslo.messaging.rpc.dispatcher   File "/usr/lib/python2.7/dist-packages/oslo/messaging/rpc/dispatcher.py", line 176, in _$
2014-06-25 17:20:57.158 27632 TRACE oslo.messaging.rpc.dispatcher     return self._do_dispatch(endpoint, method, ctxt, args)
2014-06-25 17:20:57.158 27632 TRACE oslo.messaging ...
(more)
2014-06-25 16:23:19 -0600 commented answer resize disk down

No go. Same error. I cannot understand why.

2014-06-25 15:32:35 -0600 commented answer resize disk down

It does nothing but error with instance not resizing, skipping migration. This happens very quickly and does not register in dashboard.

2014-06-25 15:25:49 -0600 commented answer resize disk down

I have just tried the resize. The hypervisor is KVM. There are errors but nothing that points to a failure. What options should exist in nova.conf to make it happen. No way I have more space because I just resized it up then tried to downsize it.

2014-06-25 15:22:10 -0600 commented answer Slow download/Upload speeds in VM

No errors in ovs_agent logs or openvswitch logs. Current kernel 3.13.0-29-generic

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2014-06-25 14:02:48 -0600 commented answer Slow download/Upload speeds in VM

I tried the e1000 to see if it would help the bandwidth issues, defaults is virtio. Speedtest is much faster when running within the qrouter namespace. I cannot get those same results in instances. Tried other images like centos, This instance is ubuntu cloud x64. Anyhelp would be much appreciated.

2014-06-25 13:40:36 -0600 commented answer Slow download/Upload speeds in VM

GRO/TSO are turned off on physical NIC connected to br-ex on network node. Speedtest within the router namspace shows much better bandwidth than instances. No issues are seen using tcpdump/wireshark. Performance is worse when using the e1000 NIC rather than the virtio one.

2014-06-25 13:34:15 -0600 asked a question resize disk down

Can Openstack rezise instances down?

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2014-06-25 05:38:35 -0600 commented question promiscuous mode br-ex ml2 icehouse

This is listed under the openvswitch plugin however I am using the ml2 plugin. This is where I am confused,

2014-06-24 16:47:25 -0600 asked a question promiscuous mode br-ex ml2 icehouse

I know when strictly using Openvswitch, promiscuous mode was required on the network adapter being used for br-ex. With Ml2, the documentation does not say. Should the adapter be set with promiscous when using ml2?

2014-06-24 09:22:27 -0600 asked a question Slow download/Upload speeds in VM

I am stumped. I have turned off gro and tso on virtio network adapter in VM. I get on average 10 mbs down and 3 mbps upload. Outside of VM, my upload and download speeds are 49mbps respectively. Intra-vlan traffic is good averaging at 66mbps when performing iperf testing. Internet access to instances are slow. Any ideas or is this normal behavior. I have a dedicated compute, network, controller node. I am using GRE. The host nic's are 1000.

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2014-05-26 11:14:27 -0600 commented question How to allow compute nodes to access Internet directly with Neutron GRE?

I too have concerns about the network bottleneck. I have a public cloud with openstack and floating public ip's. I have not load tested it with many VM's but it would seem like it could be a problem. I was thinking of possibly implementing LAG on 2 nics to get better throughput and load. Would love to get feedback from a larger implementation.

2014-05-26 08:26:39 -0600 commented answer Icehouse nova.conf after running Ubuntu 14.04 package installation

Sorry it does not sound clear after reading it. I put all commands per the documentation and also added the three commands above the logdir, the state_path and the Lock_path. The others did not need to be added, at least in my setup. If you don't add those three additional commands, you receive errors.

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2014-05-25 15:05:28 -0600 answered a question Icehouse nova.conf after running Ubuntu 14.04 package installation

I only put back in these commands and everything works. They are missing in the documentation and cause errors without them.

logdir=/var/log/nova state_path=/var/lib/nova lock_path=/var/lock/nova

2014-05-24 17:46:59 -0600 answered a question Any successful trove integration?

The "datastores" tables in database trove needs to be updated with the version ID from the datastore_versions table. Once I did that it started working.

2014-05-23 07:42:13 -0600 commented answer Create Image from ISO

Thank you for this. However, can they be created from within Openstack AKA boot from ISO?

2014-05-22 17:33:27 -0600 asked a question Create Image from ISO

I have seen many conflicting answers to this question. When I try it myself using Cinder, it does not work. Can you create images from ISO in Openstack Icehouse? If so, what is the trick? Thanks.

Juan

2014-05-08 07:54:44 -0600 answered a question cloud-archive only supported on precise

I have researched this as well. From what I can find, cloud-archive was used for Ubuntu 12.04. I have seen some references of it being used for Ubuntu 13.10, but not 14.04 LTS. Since 14.04 was built using Openstack Icehouse, I do not believe that the cloud-archive is needed.

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2014-05-05 08:44:54 -0600 commented question cannot ping gateways from instance

Will check on this. Thanks.

2014-05-05 08:44:21 -0600 commented answer cannot ping gateways from instance

It does complain about the 169.254.169.264 being unavailable regardless of instance type Cirros or Ubuntu. Will check. Thank you so much. Beating my head against the wall on this one.

2014-05-05 07:20:32 -0600 commented answer cannot ping gateways from instance

I have used a lot of these troubleshooting steps. I can ping gateways from within the DHCP and router namespaces using the ip netns exec command. I can get to my instance vai ssh when assigned a public ip address. However, from within the instance itself, I cannot ping anything nor get external access. It is almost like the instance did not get added to the namespace. I can see the arp requests for both the instance and gateway. I am very perplexed.

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2014-05-04 16:20:10 -0600 asked a question cannot ping gateways from instance

I am having a difficult time troubleshooting my instance issues inability to get to the internet. I can perform an nslookup from the router as well as ping instances. The instances cannot ping the gateways? Should they be able to?