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2017-09-08 03:44:27 -0500 asked a question clearlinux and clearcontainers on openstack


Has anyone played with Intel's Clearlinux image in OpenStack?

How fast is a Clearlinux instance booting on a standard(unmodified) host?

Is docker swarm working in this setup?


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2017-08-16 16:02:57 -0500 asked a question RDO packstack very slow write on cinder volumes

I have an RDO packstack Newton setup with 1 controller node and 2 compute nodes, all on VMs run by KVM.

The cinder volume service is on the controller node as well. It's LVM accessed with ISCSI.

The write speed on a volume attached to an instance is extremely low, ~5MB/s

#  dd if=/dev/zero of=baloon bs=1048576 count=200 oflag=dsync
200+0 records in
200+0 records out
209715200 bytes (210 MB) copied, 39.5572 s, 5.3 MB/s

The network speed between compute and storage(controller) nodes is 100MB/s

Any troubleshooting and tuning tips are appreciated.


2017-08-07 03:41:12 -0500 asked a question controller node unexpectedly reboots


I have an RDO packstack Newton setup with 1 controller node and 4 compute nodes, all on VMs run by KVM.

The cinder volume service is on the controller node as well.

Periodically, the controller node reboots with no relevant message in /var/log/messages.

Any hints on troubleshooting this issue are appreciated.


2017-07-25 05:44:51 -0500 asked a question Multiple DSCP marks on same neutron port


Starting with Newton looks like OpenStack supports DSCP marking on outgoing packets.

Is there any way to specify that the DSCP marking should be applied only if certain conditions (based on packet content) are met ?

E.g. set a DSCP mark for dest port 80 and another DSCP mark for dest port 3868.


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2017-04-28 04:48:44 -0500 asked a question procedure to upgrade from newton to ocata


Is there a procedure available to upgrade from newton to ocata on Ubuntu ?

My setup has the next services installed, with multiple compute nodes: Identity service Image service Compute service Networking service Dashboard Block Storage service

Thanks, Laurentiu

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2016-11-07 02:26:23 -0500 commented question openvswitch vs. linux bridge network deployment

I have specific requirements for Liberty.

2016-11-06 15:22:44 -0500 asked a question create flavor with any user from dashboard

Is there any way to enable flavor management for any user from the openstack dashboard ? Basically I want to enable flavor create capability for every tenant user.

2016-11-06 14:40:03 -0500 asked a question openvswitch vs. linux bridge network deployment


In the OpenStack official networking guide, there are 2 options to deploy self-service networks:

What is the benefit of using OVS over Linux Bridge ? The OVS flow diagrams looks more complex compared to the Linux Bridge one.

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2016-10-26 09:20:49 -0500 asked a question allocation ratio per compute node


Is it possible to configure different allocation ratios (cpu_allocation_ratio, ram_allocation_ratio and disk_allocation_ratio) for different compute nodes ?

What I want basically is to disable the overcommittment for some of the compute nodes.


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2016-10-09 13:41:45 -0500 commented answer openstack 2 network interfaces requirement

My main concern is if there are any other impacts. With this one I can live for now.

2016-10-09 13:41:24 -0500 commented answer openstack 2 network interfaces requirement

Now, the machines already have a management network so getting access to a terminal is guaranteed. The only issue I see is that in case N/W congestion there is an impact on OS services and their dependencies (MariaDB , MongoDB, RabbitMQ, Apache server).

2016-10-09 13:41:04 -0500 commented answer openstack 2 network interfaces requirement

That's not the point, Boris. It's just understanding the requirements: I have a few physical machines used for development purposes. I plan to move them to a private OS cloud. This is to get a better allocation of H/W, faster response time in terms of development infra requirements and so on.

2016-10-09 06:17:11 -0500 commented answer openstack 2 network interfaces requirement

Thanks. I'm trying to understand why mixing management and external traffic is a bad idea. Why do you say "PoC deployments" only ?

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2016-10-08 15:33:56 -0500 asked a question openstack 2 network interfaces requirement


For all OpenStack setups I've followed there is a common requirement to have at least 2 NICs on the controller and compute nodes.

One for management and one public.

What's the reason for this requirement ? Is it possible to do an OpenStack setup with one interface only (for controller and compute nodes) ?

2016-09-23 02:27:51 -0500 marked best answer SoftwareDeployment does not provision user data


For the following heat template, the SoftwareDeployment does not provision the user data:

heat_template_version: 2015-10-15


    type: OS::Nova::Server
      config_drive: "true"
      name: test
      image: some_image
      flavor: some_flavor
      key_name: key
      user_data_format: SOFTWARE_CONFIG
       - port: { get_resource: some_port }
          - heat_local
        polling_interval: 60

    type: OS::Neutron::Port
      network_id: some_network
        - subnet_id: some_subnet

    type: OS::Heat::SoftwareConfig
      group: script
      config: |
        echo "one" > /tmp/one

    type: OS::Heat::SoftwareDeployment
        get_resource: config
        get_resource: server
      signal_transport: NO_SIGNAL

All resources are successfully created

| config        | 43a7b6b7-1f56-4034-8d88-429fd6f8ff8a | OS::Heat::SoftwareConfig     | CREATE_COMPLETE | 2016-09-05T15:43:20 |
| deployment    | d061caa9-8101-4414-b97c-f956ccd622bd | OS::Heat::SoftwareDeployment | CREATE_COMPLETE | 2016-09-05T15:43:20 |
| some_port     | 84bdac40-34dc-4098-9e3e-75d87f4aa72c | OS::Neutron::Port            | CREATE_COMPLETE | 2016-09-05T15:43:20 |
| server        | 51c53179-60f1-4261-8951-8748e8ad43da | OS::Nova::Server             | CREATE_COMPLETE | 2016-09-05T15:43:20 |

But the user data on the VM is empty. I'm logging to the VM and mounting the cdrom (that is the config drive where metadata is mapped)

# mount /dev/sr0 /mnt/
# cat /mnt/openstack/latest/user_data
Content-Type: text/x-shellscript; charset="us-ascii"
MIME-Version: 1.0
Content-Transfer-Encoding: 7bit
Content-Disposition: attachment; filename="userdata"

2016-09-23 02:27:45 -0500 answered a question SoftwareDeployment does not provision user data

This is because cloud-init needs access to the HEAT API.